Zebra Technologies Printer Q3DLUBA000002 User Manual

Mobile Printers  
Maintenance Manual  
for QL220, QL220 Plus;  
QL320, QL 320 Plus;  
QL420 and QL 420 Plus  
RMAN-QLS-002 Rev. A  
October, 2008  
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ContentS  
continued  
• iii •  
RMAN-QLS-002 rev. A  
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RMAN-QLS-002 rev.A  
• iv •  
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Section 1: QL introduction  
Description  
The Zebra QL220, QL 220 Plus; QL320, QL 320 Plus; QL420 and QL 420 Plus Mobile  
Printer s are low-cost, portable, direct thermal printers. They can be carried by the  
shoulder strap, sit on a work space, or be mounted to a specific location. They are  
powered by a Li-Ion battery pack which makes them particularly useful in environments  
where AC power is not readily available. The QL series of printers delivers traditional  
Zebra reliability in a transportable label printer for the mobile work environment.  
operating Modes  
tear-off Mode. The operator tears off a single label (or a strip of labels) after  
printing.  
Peel-off Mode. The liner is peeled away from the label as it prints, the printer  
waits until the operator removes the label, and then the next label prints.  
Printing technology  
The QL series printers utilize direct thermal printing wherein a substrate, typically pa-  
per, is coated with a chemical that changes to a dark color upon exposure to heat over a  
period of time to form an image.  
Communications  
Communications between QL series printers and a host terminal can occur in four  
basic ways:  
• By a cable between the printer and its host terminal using either RS-232C or USB  
2.0 communication protocols.  
• Linking to a host terminal via Infrared (usually by means of the industry standard  
IrDA protocol)  
• By means of a Bluetooth® short range radio frequency link.  
• By means of a wireless LAN (Local Area Network) per 802.11 specifications.  
user guide  
Use of this manual presumes a familiarity with the QL series printers. Complete  
information regarding the operation, features and specifications of the QL series  
printers can be found in the QL Series User Guide which can be found on-line at  
www.zebra.com/manuals.  
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Diagnostic tools  
This section of the Printer Repair Manual contains instructions for using the various  
diagnostic tools available from Zebra and instructions on contacting technical support  
services offered by Zebra.  
Following sections contains explanations on the products configuration structure,  
troubleshooting guide for isolating common printer problems, illustrated parts break-  
downs for specific models and specialized component replacement procedures.  
Configuration Label Printout  
The printer can create a configuration label which exercises all of the printhead’s ther-  
mal elements and create a detailed report of the printer’s settings and any special files  
that may be loaded into memory.  
This Diagnostic label can be used as an initial tool to diagnose such basic printer  
problems as missing printhead elements, missing or incorrect application files or incor-  
rect settings.  
Label Vista™  
Label Vista is a Windows™ based label design program, which also offers comprehen-  
sive diagnostic and utility routines. The ability to create, edit and print files and perform  
diagnostic tasks makes Label Vista an extremely powerful tool for maintaining the Ze-  
bra line of portable printers.  
The Label Vista application may be downloaded from Zebra’s Web site  
unit test and Calibration Software  
Zebra authorized service organizations have access to powerful test and calibration  
software which allows them to perform more advanced procedures. These procedures  
are identified by the following message:  
The following procedure can only be performed by Zebra authorized service organizations using ap-  
proved equipment and software.  
If you do not have this approval, do not attempt to perform these procedures. If they  
are performed improperly or incompletely, the printer will not function properly.  
Factory technical Support  
Refer to the “Factory Repair & Parts Ordering Procedure” topic in this Section for  
information on contacting technical support, ordering parts or returning your printer for  
repair.  
introDuction to label Vista™  
RMAN-QLS-002 rev.A  
• 1-6 •  
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Printing a Diagnostic label  
Creating a Configuration Label  
1. Turn the printer off. Load the media compartment with journal media (media  
with no black bars printed on the back)  
2. Press and hold the Feed Button.  
3. Press and release the Power button and keep the Feed button pressed. When  
printing starts, release the Feed button.  
The printer will generate a configuration label similar to the following example:  
Sample Configuration Label  
Print Head Test  
Identifies Printer as  
a QL Plus series  
End of First Report  
Unit Serial Number  
Application Number  
Report appears  
only on units with  
wireless options  
installed.  
Units with no  
wireless op-  
tions will print an  
empty line and  
resume  
This unit has a  
802.11b radio  
option installed.  
This section  
details the radio’s  
network settings  
Fig u r e 1: Co n F ig u r a t io n La b e L ex a m p L e  
• 1-7 •  
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Peripherals installed:  
In this example the  
LCD display option is  
installed.  
Flash and RAM  
Memory Installed  
Maximum Label  
Size  
Resident Human  
Readable fonts  
installed  
Fig u r e 1a: Co n F ig u r a t io n La b e L ex a m p L e (C o n t i n u e d )  
RMAN-QLS-002 rev.A  
• 1-8 •  
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Files Loaded in Printer  
Memory (will include  
Pre-scaled or Scalable  
Fonts)  
EPL and ZPL emula-  
tion is standard on QL  
Plus series  
Fig u r e 1b: Co n F ig u r a t io n La b e L ex a m p L e (C o n t i n u e d )  
• 1-9 •  
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using label Vista  
Label Vista is a program running under the Windows™ environment that allows users  
to design labels which can be printed on the full range of Zebra mobile printers.  
Label Vista also provides a powerful set of diagnostics tools which use familiar Win-  
dows “point and click” routines. These tools can be reached under the Printer selection  
on the Label Vista menu bar. It is recommended that the Label Vista documentation  
package be consulted for a more detailed description of the printer diagnostics avail-  
able in Label Vista.  
equipment Required For Label Vista  
1. An IBM-PC Compatible with the following mimimum configuration:  
• Pentium CPU  
• 256 MB RAM  
• 1.44 MB Floppy Drive  
• 1 GB Hard Drive  
• CD-ROM drive  
• SVGA 14” monitor and SVGA card  
• 2 Serial Ports, 1 Parallel Port  
• A USB port  
• Windows 95/98, NT or XP.  
2. Serial Interface Cable part number BL17205-2 (or a Zebra approved equivalent), or a  
USB interface cable part number AT17010-1.  
3. Digital Multimeter (Fluke 77 or similar) w/ minimum impedance >100 KΩ  
4. Spare batteries, charger and test media specific to the printer. Refer to the table in  
the “Tools and Supplies” topic in Section 2 of this manual.  
Starting Label Vista  
1. Plug the 9 pin “D”-sub connector from the serial interface cable into a serial com-  
munications port (COM1 or COM2) on your computer. If you are using USB com-  
munications, plug the USB cable into the port on your PC  
2. Plug the other end of the interface cable into either the serial I/O port of the  
printer. or the USB port directly above it.  
3. Start the Label Vista program by either clicking on the Label Vista shortcut on  
your desk top, or using the “Start” button.  
4. Use Label Vista’s extensive built-in Help topics for instructions on using its many  
design, editing and diagnostic features.  
continued  
RMAN-QLS-002 rev.A  
• 1-10 •  
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using label Vista  
equipment Required  
1. A computer with the following minimum configuration:  
• Pentium CPU  
• 256 MB RAM  
• 1.44 MB Floppy Drive  
• 1 GB Hard Drive  
• CD-ROM drive  
• SVGA 14 in.monitor and SVGA card  
• 2 Serial Ports  
• USB Port  
• Windows 95/9, NT or 2000  
• Unit Test Software version 3.3 or higher installed with the “euro” configuration.  
2. A bar code scanner, using either RS232 (serial) keyboard “wedge” or USB com-  
munications. (Example: Symbol Model LS1908 series)  
3. Serial Interface Cable part number AK18350-1 (or a Zebra approved equivalent).  
4. Spare batteries, charger and test media specific to the printer. Refer to the table  
in the “Tools and Supplies” topic in Section 2 of this manual.  
5. Sensor calibration swatches: p/n AA15417-1 (gray) and p/n AA15417-2 (white)  
These swatches are included in Spares Kit AN16753-029C.  
Running the Software  
CAUTION: DO NOT disconnect the communications cable at any time during the Unit Test  
procedure unless prompted to do so by the software!  
Certain replacement procedures in this manual will require running the test procedure to  
verify a repair. It is recommended that you perform the entire unit test sequence for these  
procedures to verify all printer functions after the replacement.  
To Start  
• Launch the Unit Test Application.  
• Plug the Serial Interface Cable into the printer’s communication port.  
• Follow the on-screen instructions.  
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RMAN-QLS-002 rev. A  
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Section 2 • QL RepaiR pRoceduReS  
uSing the QL pRoduct configuRation code  
Each QL series printer has a 15 digit Product Configuration Code (PCC) label on the bot-  
tom of the unit. This code is explained by the charts for the respective printers in Sec-  
tion 3.  
When ordering replacement parts use the PCC code to ascertain the features installed  
on your printer. Then use the exploded view of the printer on the following pages to  
determine which replacement kits should be ordered.  
QL component RepLacement pRoceduReS  
The procedures in this section detail how to install components included in the various  
QL series replacement kits.  
It is highly recommended that you do not install any components which would alter the  
printers configurations status (e.g. changing the type of wireless module).  
If you ever have to send your printer back to the Factory Service Center (FSC), your  
printer will be updated as necessary to conform with the printer’s configuration as  
shipped from the factory and as described by the product configuration number on the  
unit..  
If the product configuration number does not properly identify the printer’s actual config-  
uration, any changes you have made to the printer may be removed should it be returned  
to Zebra for servicing.  
If you have to contact Zebra’s technical support staff, you will be asked for your unit’s  
configuration number. If the configuration number you supply does not correspond to  
the printer’s actual status, any technical support you receive may not be accurate.  
additionaL infoRmation  
Some procedures provide addtional information in the form of short video clips which  
depict the repair procedure.  
Clicking on this icon  
on the procedure pages will link you to the appropriate video  
clip for this procedure. You must have software installed on your computer which al-  
lows viewing of QuickTime™ movies.  
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tRoubLeShooting  
StandaRd contRoL paneL  
If the printer is not functioning properly, refer to the chart below to find the state of the  
two LEDs on the Control Panel. Then refer to the Troubleshooting topic referenced in  
the chart to resolve the problem.  
Yellow LED  
Feed Button  
Green LED  
Power Button  
Press to advance the  
Press to turn unit  
on. Press again  
to turn unit off  
media one blank label  
or a software determined  
length of journal media.  
Function Button  
Specific functions are under  
printer application control.  
green Led  
Yellow Led  
indication  
Ref. to topic  
Steady  
Off  
Normal Operation,  
n/a  
and/or RF Link established  
Off  
Off  
Off  
Power Off  
No RF Link  
Low Battery  
1
Fast Blink  
6, 11  
Slow Blink  
Steady  
Off  
3, 6, 7  
9, 11  
Steady  
Out of media, or  
Media Cover not closed  
Steady  
Steady  
Fast Blink  
Normal RF activity  
No application  
8
8
Fast Blink,  
Beeper Sounds  
optionaL Lcd contRoL paneL  
The top of the display shows several icons which indicate various printer functions.  
Check the indicator status, then refer to the Troubleshooting topic referenced in the  
RMAN-QLS-002 rev. A Repair Procedures  
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chart to resolve the problem.  
troubleshooting topics  
1. No power  
Feed Button  
Scroll Button  
Printer Status  
Icons  
Press to advance  
the media one blank  
label or a software  
determined length  
of journal media.  
Press to scroll through  
the menu choices on  
the LCD.  
Power Button  
Press to turn unit on. Press  
again to turn unit off  
Select Button  
Press to select a menu  
choice on the LCD.  
Status Icon  
Condition  
Indication  
Ref. to topic  
Steady  
Bluetooth Link established  
n/a  
Flashing  
Off  
Data transmission via Bluetooth  
No Bluetooth link  
n/a  
6
Steady  
Off  
RF Link established  
No RF Link  
n/a  
6
Flashing  
Flashing  
Flashing  
Flashing  
Flashing  
n/a  
Low Battery  
Head latch not closed  
Printer Activity  
3, 6, 7  
9, 11  
n/a  
Printer is receiving a file  
Out of media,  
8
9, 11  
1,13  
Blank Screen  
No application  
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•Check that battery is installed properly  
•Recharge or replace battery as necessary.  
2. Media does not feed:  
•Be sure printhead is closed and latched.  
•Check spindle holding media for any binding.  
•If unit is equipped with label presence sensor:  
Insure most recently printed label is removed.  
Also insure label sensor is not blocked.  
3. Poor or faded print or  
flashing:  
•Clean printhead.  
•Check battery and recharge or replace as necessary  
•Check quality of media.  
4. Partial/missing print:  
•Check media alignment  
•Clean printhead.  
•Insure printhead is properly closed and latched.  
5. garbled print:  
•Check baud rate.  
6. No print:  
•Check baud rate  
•Replace battery  
•Check cable to terminal  
•Establish RF Link (Wireless units only) or restore LAN associativity (QL 420 WLAN models  
only)  
•Invalid label format or command structure — put printer in Communications Diagnostic (Hex  
Dump) Mode to diagnose problem.  
7. Reduced battery life  
•Check battery date code — if battery is one to two years old, short life may be due to normal  
aging.  
•Recondition battery.  
•Replace battery.  
8. Yellow error light or  
flashing:  
•No application or application corrupted: reload program.  
•If using wireless communications: flashing indicator is normal while data is being transmitted  
or received.  
9. Yellow error light always on;  
or  
flashing:  
•Check that media is loaded and printhead is closed and securely latched.  
10. Skips labels:  
•Check media for top of form sense mark or label gap.  
•Check that the maximum print field has not been exceeded on label.  
•Insure bar/ or gap sensor is not blocked or malfunctioning  
11. Communication error:  
•Check media is loaded, head is closed and error light is off.  
•Check baud rate.  
•Replace cable to terminal.  
12. Label Jam:  
•Open head release latch and media cover.  
•Generously apply alcohol to printer in area of jammed label.  
13. Blank LCD Screen (only for units with optional LCD control panel)  
•No application loaded or application corrupted: reload program.  
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QL220/220 pLuS RepaiR path  
Battery Pack  
LCD  
Gear  
Compliment  
RMAN-QLS-002 rev. A Repair Procedures  
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QL320 & QL420 RepaiR path  
Media Support  
Disks  
Media Roller  
Kit  
Belt Clip  
Corner Kit  
Platen Kit  
QuickLink™  
Modules  
Upper  
Housing  
Connector  
Door  
Latch  
Assembly  
Peeler Shaft/  
Roller  
Lower  
Housing  
MLB  
Keypad  
Media Cover  
Assembly  
Printhead  
Assembly  
Motor  
Printer Frame  
Media  
Assembly  
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tooLS and SuppLieS  
Make use of the following tools and supplies for maintaining the printer and installing  
the repair kits:  
Hand toolS  
• #1 Phillips Head Screw Driver  
• 3/32” hex driver  
SPeCial toolS (oPtional)  
• AU16259-1 Printhead Spring Tool  
• AU16266-1 Gap Sensor Assy installation tool  
SuPPlieS  
• Cleaning Pen (10 pack), p/n AN11209-1  
• Cleaning Kit with Cleaning Pen, and Cotton Swabs p/n AT702-1  
• Isopropyl alcohol  
• SuperLube™ lubricant p/n 82325 SL  
• Spares Kit AN16753-029, consisting of:  
• Eye Sensor Calibration Swatch p/n AA15417-1  
• Gap Sensor Calibration Swatch p/n AA15417-2  
• Media, Batteries, and Chargers for QL series printers per table below:  
Mobile Printer Journal Media Label Media  
Charger and/or  
Conditioner  
Model #  
(for Life Test) (for Gap test)  
LD-D2RP5B LD-D2YL5R  
LD-R3RS2J LD-D3AF7K  
Tag Media  
LD-D2TP5W  
LD-3TP5H  
Label Media  
LD-R5LF5E  
LD-R3LF7Q  
Battery  
QL 220/220+  
QL 320/320+  
AT16004-1 AT17696-1 or AT16305-4*  
AT16004-1 AT17696-1 or AT16305-4*  
QL 420/420+  
LD-D4FN6K LD-D4YL5K  
LD-D4TP5L  
LD-R4LFSP  
AT16293-1 AT17696-1 or AT16305-4*  
* US version only. Consult factory for charger part numbers compatible with other locations.  
StoRage and handLing  
Handling:  
The use of an ESD wrist strap at a properly grounded workstation is required when han-  
dling printed circuit boards or other sensitive electronic components. The ESD strap  
prevents any electro-static damage to occur while assembling these components. The  
use of the ESD strap will be noted in the applicable instructions.  
Use of the ESD strap will be noted in the instructions by this symbol.  
Storage  
Replacement kits which are sensitive to ESD damage are supplied in static resistant  
packaging. Always keep these parts in their original packaging until they are to be in-  
stalled.  
RMAN-QLS-002 rev. A Repair Procedures  
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media coveR, QL 220- RK18236-1 & QL220 pLuS- RK17735-015  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or  
tray). All electronic components must be placed on an ESD protective tray. If stored,  
any electronic components must be placed in antistatic bags.  
tools Needed  
#1 Phillips head screwdriver  
3/32” Hex Driver  
Removing the Media Cover  
1. Turn the printer off and remove the battery pack.  
2. Remove the Upper Housing.  
3. Press the latch release button and open the Media Cover as though loading me-  
dia. Remove any media from the printer.  
4. Remove Printer Chassis from the Lower Housing. Retain the screws.  
5. Unlock the connector and remove the Bar Sense Cable from J2 on the MLB.  
Carefully peel the Bar Sense cable from the bottom of the Printer Chassis.  
6. Press the Hinge Pin out of the Printer Chassis and remove the Media Cover. Use  
the 3/32” hex driver to get the pin started. Lift the Media Cover from the Printer  
Chassis.  
7. If necessary, remove the Platen and Gear and/or the Peeler Bar or Scraper  
Installing the Media Cover  
1. Feed the Bar Sense Cable through the slot in the Printer Chassis as shown.  
2. Align the Media Cover with the Printer Chassis and slide the Hinge Pin through  
the Media Cover and Printer Chassis. Center the pin.  
Slide the hinge pin behind the Bar Sense Cable.  
3. Peel the backing off the bar sensor cable and adhere it in the groove on the bot-  
Media Cover  
Hinge Pin  
Slide the pin behind the  
Bar Sensor cable.  
Printer Frame  
Feed Bar Sensor cable through this slot.  
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tom of the Printer Frame.  
4. Plug the Bar Sensor Cable into J2 (BAR) on the MLB and lock the connector.  
5. Install the Printer Chassis in the Lower Housing.  
6. If necessary, install the Platen and Gear.  
7. Install the Upper Housing.  
8. Calibrate the Sensors.  
This procedure can only be performed by Zebra certified personnel using special equipment  
and software.  
Using the gray and white swatches, follow the on-screen instructions on the unit  
test and set-up software to properly calibrate the sensors. It is recommended  
that the complete unit test procedure be performed.  
RMAN-QLS-002 rev. A Repair Procedures  
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media coveR, QL 320, QL 320 pLuS & QL 420,QL 420 pLuS  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Model  
Kit p/n  
Comments  
AN16861-023  
AN16861-024  
RK18465-001  
RK18231-1  
units built prior to 1/22/03  
units built after 1/22/03  
QL 320  
QL 320 Plus  
QL 420  
QL 420 Plus  
RK17735-001  
tools Needed  
#1 Phillips head screwdriver  
3/32” Hex Driver  
Removing the Media Cover  
1. Turn the printer off and remove the battery pack.  
2. Remove the QuickLink Module.  
3. Remove the Upper Housing.  
4. Press the latch release button and open the Media Cover. Remove any media  
from the printer.  
5. Unlock the connector and remove the Bar Sense Cable from J2 on the MLB.  
7. Remove the Printer Frame from the Lower Housing. Carefully pivot the printer  
frame out of the Lower Housing (#2 below) and lift the Media Cover clear of the  
Lower Housing (#3 below) .  
3
2
Avoid putting excess strain on the remaining cables connected to the MLB.  
8. If necessary, remove the Platen and Gear and/or the Peeler Bar or Scraper from the  
Media Cover Assembly.  
9. Remove the Bar Sense Cable from the Printer Frame. Carefully peel the Bar  
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Sense cable off the bottom of the Printer Frame (#4 below).  
10. Remove the Media Cover. Using a 3/32” hex driver, push the Hinge Pin out of  
4
the Printer Frame, and then lift the Media Cover from the Printer Frame.  
Installing the Media Cover  
Media Cover  
Slide Hinge Pin Behind Flex Circuit.  
Hinge Pin  
Printer Frame  
1. Feed the Bar Sense Cable through the slot in the Printer Frame as shown.  
2. Align the Media Cover with the Printer Frame and slide the Hinge Pin through  
the Media Cover and Printer frame. Center the pin.  
Slide the hinge pin behind the Bar Sense Cable.  
3. Peel the backing off the bar sensor cable and adhere it in the groove on the bot-  
tom of the Printer Frame.  
4. Install the Printer Frame in the Lower Housing.  
Avoid putting excess strain on the remaining cables connected to the MLB.  
5. Plug the Bar Sensor Cable into J2 (BAR) on the MLB and lock the connector.  
6a. If necessary, re-install the Platen and Gear and/or the Peeler Bar or Scraper on  
RMAN-QLS-002 rev. A Repair Procedures  
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the QL 320.  
Important note for QL 320 units built before 1/20/03. Use of Media Cover Replacement Kit  
AN16861-023 requires the use of the Platen and Gear Assemblies included in Replacement Kits AN16861-  
035 (linered) and -036 (linerless). You will not be able to use the original Platen and Gear Assemblies sup-  
plied with the printer.  
Refer to the platen replacement Procedures for AN16861-013 or -014 for QL 320 units built after 1/20/03.  
6b. If necessary, replace the Media Guide Rollers (AN 16753-003 or -004) and the  
Platen, Gear and the Peeler Bar or Scraper on the QL 420  
(Refer to Procedures for AN16753-021 or -022)  
7. Install the Upper Housing.  
8. Install the QuickLink module.  
9. Calibrate the Sensors.  
This procedure can only be performed by Zebra certified personnel using special equip-  
ment and software.  
Using the gray and white swatches, follow the on-screen instructions on the unit  
test and set-up software to properly calibrate the sensors. It is recommended  
that the complete unit test procedure be performed.  
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media guide pLate aSSembLy, QL220/220 pLuS  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Kit p/n  
Description  
type  
AN16972-007  
AN16972-023  
RK18467-001  
RK18467-002  
KIT REPAIR QL2 MEDIA GUIDE PLA  
KIT REPAIR QL2 MEDIA GUIDE ASSy w/ MW  
KIT RPR QL2 MEDIA GUIDE W/BELT  
KIT QL2 MEDIA GUIDE LNL W/BELT  
Rack and Pinion  
Rack and
Belt/ Linai  
Belt/Linerless Media  
Removing the Media guide plate assembly  
1. Turn the printer off and remove the battery pack.  
2. Remove the Upper Housing.  
3. Remove the Lower Housing.  
4. Unplug the following cables from the MLB: J5 (Label Presence Sensor), J10  
(Gap Sensor). If unit has the Media Width Sensor, unplug J11 from the bottom  
of the board.  
5. Unplug the keypad or LCD connectors from the MLB.  
6. Remove the 2 screws retaining the printer frame to the chassis. Carefully re-  
move the MLB and Printer Frame from the chassis, avoiding cable strain.  
Dress Peel Sensor and Media Width Sensor  
cable from Media Plate Assembly through  
slot in Printer Frame.  
Printer Frame  
Screw, #4-40 x 3/16” Skt Hd. (2)  
Torque = 5 in/lbs  
Press Latch Lock here to  
test locking feature.  
Slide Rack Lock this way to allow Media Plate  
Assembly to locate.  
Media Supports  
RMAN-QLS-002 rev. A Repair Procedures  
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7. Remove and retain the Screws securing the Media Guide Plate Assembly to the  
Printer.  
8. Remove the optional Media Width Sensor. If the Printer is equipped with the  
Media Width Sensor, pull the sensor cable free of the Printer Frame.  
9. Remove the Media Guide Plate Assembly. Rock the Media Guide Plate Assem-  
bly forward and then lift it away from the Printer Frame. Keep the Gap Sensor  
Cable with the Media Guide Plate Assembly. Retain all components.  
installing the Media guide plate assembly  
1. Fold the Gap Sensor Cable and dress it through the slot near the side of the  
Printer Frame.  
2. Dress the (optional) Media Width Sensor Cable through the slot near the side of  
the Printer Frame.  
3. Insert the Pinion Gear in the round hole that accesses the rack gear and slip the  
Media Guide Plate Assembly into the slot in the bottom of the Printer Frame.  
The tab on the bottom of the Media Guide Plate Assembly fits into the slot in  
the bottom of the printer frame. Push the Media Guide Plate Assembly against  
the Printer Frame.  
4. Insert screws from the motor side of the Printer Frame and secure the Media  
Guide Plate Assembly to the Printer Frame. Do not pinch any cables.  
5. Plug the Gap Sensor cable and (optional) Media Width Sensor Cable into the  
MLB and lock the connectors.  
6. Make sure that the Media Supports move freely with the Latch open.  
7. Install the MLB and Printer Frame into the chassis.  
8. Plug the keypad or LCD cables into the MLB.  
9. Install the chassis and Printer Frame to the Lower Housing.  
10. Install the Upper Housing.  
• 2-49 •  
RMAN-QLS-002 rev. A Repair Procedures  
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media guide aSSembLy, QL320/320 pLuS  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Kit p/n  
Description  
RK16823-043  
RK18460-1  
RK18461-1  
RK18462-1  
RK18463-1  
KIT RPR QL320 MEDIA GUIDE/MW  
KIT RPR QL3 MEDIA GUIDE W/BELT  
KIT QL3 MEDIA GUIDE LNL W/BELT  
KIT QL3 MEDIA GUIDE MW W/BELT  
KIT QL3 MEDIA GUIDE LNL MWBELT  
tools needed  
#1 Phillips Head Screwdriver.  
3/32” hex driver  
Removing the Media Assembly  
1. Turn the printer off and remove the battery pack.  
2. Remove the QuickLink Module and retain the parts.  
3. Remove the Upper Housing and retain the parts.  
4. Unplug the following cables from the MLB: J5 (Label Presence Sensor), J10  
(Gap Sensor). If unit has the Media Width Sensor option, unplug J11 from the  
bottom of the board. Unplug the Printhead, Motor, Head-up switch, and Bar  
sense cables from the MLB.  
5. Remove the Printer Frame and Media Cover and retain the parts.  
6. Remove the Gap Sensor Cable Ground from the Printhead.  
7. Remove and retain the Screws securing the Media Assembly to the Printer.  
8. If the Printer is equipped with the Media Width Sensor option, pull the sensor  
cable free of the Printer Frame.  
9. Remove the Media Assembly. Rock the Media Assembly forward and then lift  
it away from the Printer Frame. Keep the Gap Sensor Cable with the Media As-  
sembly.  
Installing the Media Assembly  
1. All Repair Kits: Assemble the Gap Sensor  
Insert the sensor on the Gap Sensor Cable into the Plate, Edge Guide as shown.  
The large hole in the cable will fit over the mounting boss on the Plate, Edge  
guide. Dress the grounding strap portion of the cable assembly away from the  
Plate Edge Guide as shown.  
2. For RK16823-043 Only  
Install the Gear, 32P, 14T on the Edge Guide Assembly. Squeeze the two media  
Supports together as far as they will travel. Slide the Gear 32P, 14T over the  
shaft on the Edge Guide Sub-Assembly, engaging the teeth on the two racks  
with the teeth on the gear.  
3. All Repair Kits: Install the Media Assembly  
RMAN-QLS-002 rev. A Repair Procedures  
• 2-50 •  
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Slip the Media Assembly into the slot in the Printer Frame. RK16823-043,  
RK18462-1, RK18463-1: The Media Width cable is dressed through two slots and  
a tab in the Printer Frame as shown.  
4. The Gap Sensor Cable must be folded over and dressed through the slot on the  
printer frame as shown. Ensure it is not pinched before securing the Media As-  
sembly.  
Ensure Media  
Sensor cable is  
behind holding  
feature.  
Dress the  
Sensor cable  
through here.  
Screw, 4-40 x 1/4”  
Socket Hd. (2 p/u)  
Dress Media  
Width Sensor  
Cable through  
Printer Frame  
5. Secure the Media Assembly to the Printer Frame with screws from the motor  
side of the Printer Frame. Do not pinch any cables.  
6. Secure the Gap Sensor Cable Ground to the Printhead.  
7. Install the Printer Frame to the Lower Housing.  
8. Plug in the Bar Sensor Cable, the Label Presence  
Sensor and the optional Media Width Sensor to the  
MLB. Plug the Printhead, Motor, Head-up switch,  
and Bar sense cables into the MLB.  
Bottom  
edge of  
Edge Guide  
Assem-  
9. Install the Upper Housing. Ensure that the “D”-  
Rings or optional hand strap components are in-  
stalled.  
bly fits  
between  
these rails.  
10. Install the QuickLink Module.  
11. Install the battery.  
12. Test the Printer.  
• 2-51 •  
RMAN-QLS-002 rev. A Repair Procedures  
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media guide aSSembLy, QL420/420 pLuS  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Kit p/n  
Description  
Type  
Belt  
Belt  
Belt  
Gear  
RK18466-002  
RK18466-003  
RK18466-004  
AN16753-001  
QL4 Linerless  
QL4 w/ Media Width  
QL4 Linerless w/Media Width  
QL4 Media Assy  
tools needed  
#1 Phillips Head Screwdriver.  
3/32” hex driver  
Removing the Media Assembly  
1. Turn the printer off and remove the battery pack.  
2. Remove the QuickLink Module and retain the parts.  
3. Remove the Upper Housing and retain the parts.  
4. Unplug the following cables from the MLB: J5 (Label Presence Sensor), J10  
(Gap Sensor). If unit has the Media Width Sensor option, unplug J11 from the  
bottom of the board. Unplug the Printhead, Motor, Head-up switch, and Bar  
sense cables from the MLB.  
5. Remove the Printer Frame and Media Cover and retain the parts.  
7. Remove the Gap Sensor Cable Ground from the Printhead.  
8. Remove and retain the Screws securing the Media Assembly to the Printer.  
9. Remove the optional Media Width Sensor. If the Printer is equipped with the  
Media Width Sensor option, pull the sensor cable free of the Printer Frame.  
10. Remove the Media Assembly. Rock the Media Assembly forward and then lift  
it away from the Printer Frame. Keep the Gap Sensor Cable with the Media As-  
sembly.  
Installing the Media Assembly  
1. Install the Media Assembly: Slip the Media Assembly into the slot in the Printer  
Frame. Note that the tab on the bottom of the Media Assembly fits into the slot  
on the bottom of the printer frame. On -003 and -004 kits only: Dress the Media  
Width Sensor Assembly through the Printer Frame  
Note: Pull the Rack Lock to the left as shown in this view while assembling to allow the Me-  
dia Assembly to sit in the printer frame. Dress the (optional) Media Width Sensor Assembly  
through the slot in the side of the Printer Frame  
2. Dress the Gap Sensor Cable. Fold the Gap Sensor Cable and dress it through  
the slot on the printer frame.  
3. Secure the Media Assembly to the Printer Frame with screws from the motor  
side of the Printer Frame. Do not pinch any cables.  
5. Secure the Gap Sensor Cable Ground to the Printhead.  
RMAN-QLS-002 rev. A Repair Procedures  
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6. Dress the (optional) Width Sensor Cable through the Printer and secure the  
Cable.  
8. Install the Printer Frame to the Lower Housing.  
9. Plug in the Bar Sensor Cable, the Label Presence Sensor and the optional Media  
Width Sensor to the MLB. Plug the Printhead, Motor, Head-up switch, and Bar  
sense cables into the MLB.  
10. Install the Upper Housing. Ensure that the “D”-Rings or optional hand strap  
components are in-  
stalled.  
Media Assy.  
Gap Sense Cable  
11. Install the QuickLink  
Printer Frame  
Module.  
12. Install the battery.  
13. Test the Printer.  
Screws  
Fold Gap  
Sense Cable  
Secure Media Assem-  
bly to Printer  
Dress Media Width Sen-  
sor Cable on -003 & -004  
Kits only  
Slide Rack Lock  
• 2-53 •  
RMAN-QLS-002 rev. A Repair Procedures  
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media SuppoRt diSKS, QL SeRieS  
Model  
Kit  
Media Type  
Linered  
QL 220/220 Plus  
QL 320  
AN16972-005  
AN16861-030/-  
031  
Linered  
QL320/320 Plus &  
QL420/420 Plus  
AN16753-026  
AN16753-002  
Linerless  
Linered  
QL420/420 Plus  
tools Needed  
#1 Phillips head screwdriver  
Remove the Media Support Disks  
1. Turn off the unit, open the Media Cover and remove any media loaded in the  
printer. (Refer to User’s Manual.)  
2. Remove the existing Support Disks by removing the screw and flat washer se-  
curing them to the Media Supports.  
Install new Media Support Disks  
Media Support Disks for linered media are smoke colored. Media Support Disks for  
linerless media are colorless (clear). Both are assembled the same way.  
1. Determine Media Core Size. Determine which media core size you will be us-  
ing. The media core width is set by flipping the media disks so that the sup-  
ports for the desired core size faces towards the inside of the printer.  
Printers using media with a 1 3/8” core must have the Media Disks adjusted to  
use this media.  
Screw  
3
Me d ia dis k s a d j u s t e d f o r /4”  
c o r e s (s t a n d a r d c o n f ig u r a t io n )  
Flat Washer  
Media Support Disk  
Me d ia dis k s a d j u s t e d  
f o r 1 3/8c o r e s  
RMAN-QLS-002 rev. A Repair Procedures  
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Note: Both Support Disks must be set to use the same diameter core.  
2. Assemble the Disks. Hold the Support Disk against the Media Support and se-  
cure with the Flat Washer and the Screw as shown above.  
3. Repeat this procedure for the opposite side.  
Changing the Media Core Size  
The printer is adjusted at the factory for media with a 3/4” core. If you need to use  
media with a larger core, do the following:  
1. Remove and retain the Screw and Washer from a Media Support as described  
above. Flip the Media Disk end-for-end, and reassemble to the Media Support  
with the retained hardware. The re-assembled Disks should look like the illus-  
tration on the left hand side if Figure 1.  
2. Repeat this procedure for the other Media Support.  
Changing Media type  
If you are changing the printer from linered to linerless media you will need to do the  
following:  
1. Remove the Platen Assembly and replace it with a platen assembly designed for  
linerless media.  
2. Remove the Peeler Bar and install the Scraper included with the Platen Repair  
Kit in its place  
3. (QL 420 only) Replace the Media Guide Rollers with linerless ones.  
4. It is recommended you change the Media Support Disks to ones designed for  
linerless media. You may also have to re-set the Media Discs for different diam-  
eter media cores.  
If you are changing the printer from linerless to linered media you will need to do  
the following:  
5. Remove the Platen Assembly and replace it with a platen assembly designed for  
linered media.  
6. Remove the Scraper and install the Peeler Bar included with the Platen Repair  
Kit in its place  
7. Replace the Media Guide Rollers with linered ones.  
8. It is recommended you change the Media Support Disks to ones designed for  
linered media. You may also have to re-set the Media Discs for different diam-  
eter media cores.  
Note: The Media Support Disks should be replaced after they have been re-adjust-  
ed for different core size s a total of five (5) times.  
• 2-55 •  
RMAN-QLS-002 rev. A Repair Procedures  
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media guide RoLLeRS, QL420/QL 420 pLuS  
an16753-003 & -004  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
tools Needed  
3/32” hex driver  
Replacing the Media Rollers  
Both Media Rollers should be replaced as a set.  
1. Turn off the Printer and open the Media Cover.  
2. Remove the old Rollers. Remove a Media Roller Cap as shown below Each one  
is held in place with a #4-40 x 1/4” Socket Head Screw.  
3. Install the New Rollers. Insert a new Media Roller into one side of the Media  
Cover Assembly as shown. Secure the Media Roller with the new Media Roller  
Cap and (1) Screw.  
4. Repeat the procedure for the other side of the Media Cover Assembly.  
Media Guide Roller, Linered  
Media Roller Cap  
Screw  
(tighten to 5  
in/lbs,)  
Media Guide  
Roller, Linerless  
RMAN-QLS-002 rev. A Repair Procedures  
• 2-56 •  
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pLaten/geaR KitS, QL220/QL 220 pLuS an16972-008 & -009  
Removing the gear and platen  
1. Open the Media Cover.  
2. Pry out the gear-end of the Platen and remove the Platen.  
installing the gear and platen  
1. Align the flats on the Platen shaft with the hole in the Gear. The rib molded on  
the Gear must face outboard.  
2. Install the Platen with Gear in the Inner Cover as shown.  
Platen and Gear As-  
sembly  
AN16792-008- Installing the Peeler Bar  
Units using meda with a liner (PCC digit 8 = A or C): Insert one end of the Peeler Bar  
into the Inner Cover. Pivot the other end of the bar down and snap it into the Inner  
Cover.  
Peeler Bar  
AN16792-009- Installing the Scraper  
Units using linerless meda (PCC digit 8 = B or D): :Snap the Scraper into the Media Cov-  
er. The pins on the Scraper fit into the mounting holes for the Peeler Bar. The Scaper is  
used with linerless media only.  
Scraper  
• 2-57 •  
RMAN-QLS-002 rev. A Repair Procedures  
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pLaten/geaR KitS, QL320/320 pLuS- an16861-013 & an16861-  
014  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
NOTE: AN16861-035 and -036 are used on QL 320 units built prior to 1/20/03. Platen replacemnt proce-  
dures are the same for both versions.  
Removing the gear and platen  
1. Open the Media Cover.  
2. Pry out the gear-end of the Platen and remove the Platen.  
installing the gear and platen  
1. Align the flats on the Platen shaft with the hole in the Gear. The rib molded on  
the Gear must face outboard.  
2. Install the Platen with Gear in the Inner Cover as shown.  
Insert this end first.  
Platen  
Gear 64P, 24T  
Rib faces outboard  
Installing the Scraper  
If the printer uses a scraper and it is not installed, snap the Scraper into the Media Cov-  
er. The pins on the Scraper fit into the mounting holes for the Peeler Bar. The Scaper is  
used with linerless media only.  
Scraper  
RMAN-QLS-002 rev. A Repair Procedures  
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pLaten/geaR KitS, QL420/420 pLuS- an16753-021 & -022  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Introduction  
The Platen Assembly and the Media Rollers of the Printer are parts subject to wear and  
damage in the same way as are automobile tires. The Platen Assembly and/or the Me-  
dia Rollers should be replaced if they show damage such as cuts or nicks on their sur-  
faces or excessive wear. Badly worn Platen Assemblies and Media Rollers can cause  
poor quality printing, improper tracking of the media and contribute to label jamming  
when trying to dispense labels.  
There are two replacement kits for the Platen:  
• AN16753-021: For Printers using media with a removable liner  
• AN16753-022: For printers using linerless media.  
This guide will detail how to install a replacement Platen Assembly.  
Refer to the User’s Manual for guidelines on cleaning the printer to increase the working  
life of the Platen Assembly and the overall efficiency of the printer.  
Preparation  
1. Turn the printer off.  
2. Open the printer as though loading media. (Refer to the User’s Manual)  
Replacing the Platen Assembly  
continued  
• 2-59 •  
RMAN-QLS-002 rev. A Repair Procedures  
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Scraper  
Peeler  
Bar  
Media  
Rollers  
1. Remove the old Platen Assembly  
Carefully lift up the end of the platen with the gear as shown at “2” in the illustra-  
tion above until it snaps free from the media cover.  
Slide the other end of the platen out of the Media Cover.  
2. Install the New Platen Assembly  
Units using linered media use the Platen Assembly included with Platen and  
Roller Kit p/n AN16753-021. Linerless units will take the Platen Assembly includ-  
ed with Platen and Roller Kit p/n AN16753-022.  
Install the new Platen Assembly in the reverse order you removed it. Insert the  
shaft end of the platen into the media cover, then rotate the end with the gear  
until it snaps into place. Ensure that the new Platen Assembly spins freely.  
3. Install the new Peeler Bar or Scraper  
Remove the old Peeler Bar or Scraper and replace with a new Peeler Bar (sup-  
plied with Kit AN16753-021) or Scraper (supplied with Kit AN16753-022). Refer to  
“3” above These components can be changed without removing the Platen As-  
sembly. Note that the Peer Bar must be installed on units using linered median  
and the Scraper must be installed on units using linerless media.  
4. Change media rollers  
If you have changed the platen type (e.g. from linered to linerless) you must also  
replace the Media Rollers (shown at “4”) with a compatible type. Refer to the QL  
420 Media Roller replacement procedure (AN16753-003 & -004) for more com-  
plete details.  
RMAN-QLS-002 rev. A Repair Procedures  
• 2-60 •  
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uppeR houSing /WiReLeSS moduLeS-QL220 & QL 220 pLuS  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
The following pages detail the procedure to install the Cover used for non-wireless  
units and the following Wireless wireless modules:  
Module type  
QL 220  
QL 220+  
Module Housing (no wire-  
less)  
AN16972-019  
RK17735-027  
IrDA Module  
n/a  
RK17735-025  
RK17735-021  
RK18879-001  
Bluetooth 1.2 (B/C)  
Bluetooth 2.0 (D)  
RK18237-1  
Compact Flash 802.11b  
(EU countrys) “N” option  
RK18239-1  
RK18238-1  
RK17735-022  
Compact Flash 802.11b  
(North America) “M”  
option  
RK17735-023  
802.11b SRRF “F” Opt.ion  
802.11g SRRF “K” Option  
n/a  
n/a  
RK17735-024  
RK17735-026  
tools Needed  
3/32” Hex Driver  
Removing the upper Housing  
1. Turn the printer off and remove the Battery.  
2. Remove the Upper Housing or Wireless Module by removing (3) screws on the  
bottom cover. Retain all hardware and either the “D” rings or the Carrying Strap  
supplied with the printer.  
“D” Ring  
Upper Housing or  
Wireless Module  
“D” Ring  
Screw, #4-40 x 1 1/4” (2)  
Screw, #4-40 x 3/16”  
continued  
• 2-61 •  
RMAN-QLS-002 rev. A Repair Procedures  
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Installing the upper Housing  
1. Position the Upper Housing onto the Lower Housing. If installing a Wirelss  
Module (Kits AN 16972-016, -017, or 018) line up the Wireless Module connector  
with the connector on the MLB.  
2. Position the D-Rings between the Upper Housing and Lower Housing as shown  
and install the (2) 4-40 x 1-1/4 Socket Head Screws.  
4. Install the 4-40 x 3/16 Phillipps Screw from the Battery Compartment.3.  
Install the Battery Pack.  
Set New Parameters  
If you are replacing a WLAN module, you can now use the Network setup wizards in  
Label Vista 2.8 or higher. They are found under the Network Setup menu. Again you  
are urged to refer to the on-line help before you use these wizards, to determine what  
information you will need to set these parameters.  
If you have any questions about network settings you should contact the system admin-  
istrator for the LAN where the QL series printer will be operating.  
Installation of the Bluetooth module allows the advanced user to set many of the  
Bluetooth parameters through the use of the “get, set, do” commands outlined in Sec-  
tion 14 of the Programming Manual (revision “Lor higher). These commands are acces-  
sible only with printer applications of revision 40 or higher.  
RMAN-QLS-002 rev. A Repair Procedures  
• 2-62 •  
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uppeR houSing, QL320- RK18233-1  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
tools Needed  
#1 Phillips head screwdriver  
3/32” Hex Driver  
Removing the upper Housing  
1. Turn the printer off and remove the Battery.  
2. Remove the QuickLink Module.  
3. Remove the Upper Housing. Remove the Upper Cover by removing (4) screws  
on the bottom cover. Retain all hardware and either the “D” rings or the Carry-  
ing Strap supplied with the printer.  
Installing the upper Housing  
1. Assemble the Upper Housing to the Printer, and secure it with the retained hard-  
ware. At this time either the “D” rings, or the Carrying strap which was supplied  
with the printer should be reassembled. Note that the longer screws are used  
in the corners of the Upper cover where the “D” rings or the carrying strap was  
installed.  
2. Install the QuickLink module. Plug the either the QuickLink module or the mod-  
ule housing supplied with the printer into the Top Housing, and secure with (1)  
screw through the battery compartment.  
3. Install the Battery Pack.  
4. Perform a two-key reset to verify that the unit has been correctly reassembled.  
Upper Housing  
Note that edges of Board  
Cover fit in these slots.  
Screw, Socket Hd. #4-40 x 3/8”  
Torque =5 in-lbs  
• 2-63 •  
RMAN-QLS-002 rev. A Repair Procedures  
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uppeR houSing, QL420/420 pLuS- an16753-007  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
tools Needed  
#1 Phillips head screwdriver  
3/32” Hex Driver  
Removing the upper Housing  
1. Turn the printer off and remove the Battery.  
2. Remove the QuickLink Module.  
3. Remove the Upper Housing. Remove the Upper Cover by removing (4) screws  
on the bottom cover. Retain all hardware and either the “D” rings or the Carry-  
ing Strap supplied with the printer.  
Cover, P.C. Board  
p/n CA16406-1  
Assemble the P.C. Board Cover  
Fold the P.C. Board Cover  
Fold P.C. Board Cover as shown in  
the sequence opposite:  
• Place the Board cover flat on a  
table as shown. Fold the two sides  
up as shown at “1” and “2”.  
• Fold the front up to meet the sides  
at “1” and fold the mounting tab  
down parallel to the table as shown  
at “2”  
• Fold the back up as at “1”, fold the  
remainder back parallel to the table at  
“2” and fold the last section vertically  
as at “3”.  
RMAN-QLS-002 rev. A Repair Procedures  
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Housing, Upper  
p/n DA16394-1  
Press cover over boss on Up-  
per Housing.  
Ensure flap on Board Cover  
fits under these tabs.  
Cover, P.C. Board from  
previous steps  
Press cover over boss on Upper  
Housing.  
Assemble P.C. Board Cover  
Assemble the Board Cover to the upper Housing. The two holes in the Board  
Cover press over the bosses on the Upper Housing. The two sides of the Board  
Cover will fit into slots on the inside surface of the Upper Housing.  
• 2-65 •  
RMAN-QLS-002 rev. A Repair Procedures  
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Install the upper Housing  
1. Assemble the Upper Housing assembly from the previous steps to the Print-  
er, and secure it with the retained hardware. At this time either the “D” rings, or  
the Carrying strap which was supplied with the printer should be reassembled.  
Note that the longer screws are used in the corners of the Upper cover where  
the “D” rings or the carrying strap was installed.  
2. Install the QuickLink module. Plug the either the QuickLink module or the  
module housing supplied with the printer into the Top Housing, and secure  
with (1) screw through the battery compartment.  
3. Install the Battery Pack.  
4. Perform a two-key reset to verify that the unit has been correctly reassem-  
bled.  
Upper Housing  
and P.C. Cover as-  
sembly  
“D” rings  
(1) #4-40 x 3/8” Phil-  
lips Hd.Screw  
Use longer screws in this location  
(2) places  
RMAN-QLS-002 rev. A Repair Procedures  
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LabeL pReSence SenSoR, QL320- an16861-015  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
tools Needed  
#1 Phillips head screwdriver  
3/32” Hex Driver  
Remove the upper Housing  
1. Turn the printer off and remove the Battery.  
2. Remove the QuickLink Module  
3. Remove the Upper Housing, per AN16861-010  
4. Open the Media Cover .  
For QL 320:Support, Sensor  
p/n CA16009-1 or  
Label Presence Sensor Assy.  
p/n AC16500-1M  
For QL 320 Plus-: p/n CL16965-3, Cbl  
Flex Crkt Shld Ql4 Lbl Sen,  
is supplied with RK18465-003  
Note orientation of sensor window  
Assemble the Sensor Support  
Snap the Sensor Support, or the Sensor Assembly into place on the Printer Frame as  
shown. Note orientation of sensor widow. If you are installing a Label Presence Sensor  
Assembly, proceed to the next step.  
• 2-67 •  
RMAN-QLS-002 rev. A Repair Procedures  
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Install Label  
Present Sensor  
option  
Dress the long end  
of the optional Label  
Present Sensor Cable  
through the Printer  
Frame so that it emerges  
as shown near J5 of the  
MLB.  
Plug the Sensor Cable into  
J5 of the MLB as shown. The  
Sensor Cable flex circuits in-  
stalls in a zero insertion  
force (ZIF) connector.  
Pull the connector open to  
insert the flex circuit. After  
insertion insure the connec-  
Insert the  
Label Pres-  
ent Sensor  
Flex Cable  
into J5 as  
shown.  
tor is closed to properly retain the  
flex circuit.  
Re-install the upper Housing  
1. Assemble the Upper Housing to the Print-  
er, and secure it with the retained hardware.  
At this time either the “D” rings, or the Carry-  
ing strap which was supplied with the printer  
should be reassembled. Note that the longer  
screws are used in the corners of the Upper cover where the “D” rings or the  
carrying strap was installed.  
2. Re-install the QuickLink module. Plug the either the QuickLink module or the  
module housing supplied with the printer into the Top Housing, and secure  
with (1) screw through the battery compartment.  
3. Install the Battery Pack.  
4. Test the printer with the unit test software to properly calibrate the sensor and  
verify its proper operation.  
RMAN-QLS-002 rev. A Repair Procedures  
• 2-68 •  
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pcmcia WLan Radio, QL320 & QL420- an16652-1 antenna  
aSSembLy, QL 320 & QL 420- an16861-011  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Installing a WLAN Radio and Antenna  
Install the Radio  
1. Install the PCMCIA Radio. Plug the PCMCIA Radio into the P.C. Board assembly.  
The PCMCIA Radio can only be plugged in one way; the label must face up.  
2. Install the PCMCIA Board Assembly  
Remove the (2) Screws and the Nylon Washer holding the MLB in place.  
Plug the PCMCIA Assembly from the first step into the C.P.U. Board.  
Place (2 ) Standoffs between the C.P.U. Board and the PCMCIA Board Assembly.  
Install the Bracket PCMCIA over the PCMCIA assembly. Place the Grounding  
Strap under the bracket and secure with (1) Screw. Secure the other side of the  
Bracket with the remaining Screw. These screws will also re-secure the C.P.U.  
Board.  
Screw #4-40 x 1/2”,  
Socket Hd.  
PCMCIA Bracket  
Torque = 5 in-lbs  
Radio PCMCIA  
Label on Radio must face “up” in  
this view.  
PCMCIA  
Standoff, 1/4” lg  
continued  
• 2-69 •  
RMAN-QLS-002 rev. A Repair Procedures  
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Assemble the Antenna  
Note: the Antenna Assembly is included as part of AN16652-1, as well as AN16861-011.  
3. Install the 2.4 GHz Antenna in the Housing Wireless Module PCMCIA as shown,  
and secure with (2) Internal Tooth Washers.  
4. Plug the lead from the antenna assembly into the PCMCIA radio.  
Housing Wireless Module  
PCMCIA  
p/n DA16059-1  
2.4 GHz WLAN Antenna  
Washer, Internal  
Tooth (2 p/u)  
Attach label sup-  
plied with repair  
kit to Antenna  
Housing  
Plug lead from Antenna Assembly into  
PCMCIA Radio module.  
Finish the Assembly  
5. Install the Upper Housing per AN 16861-010.  
6. Secure the Antenna Assembly in the printer as though it were a wireless mod-  
ule (refer to procedure for AN 16861-007.)  
RMAN-QLS-002 rev. A Repair Procedures  
• 2-70 •  
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QL 320/320 pLuS & QL 420/420 pLuS WiReLeSS moduLeS  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Introduction  
The following pages detail the procedure to install the Cover used for non-wireless  
units and the following Wireless wireless modules:  
Module type  
QL 320  
QL 320+  
QL 420  
QL 420+  
Module Housing(no wire-  
less)  
n/a  
RK18465-004  
AN16753-008  
RK17735-019  
IrDA Module  
AN16861-009  
RK18229-1  
RK17735-018  
RK17735-005  
RK18879-002  
n/a  
AN16861-009  
RK18229-1  
RK17735-018  
RK17735-005  
RK18879-002  
n/a  
Bluetooth 1.2 (B/C)  
Bluetooth 2.0 (D)  
916 MHz SRRF  
2.4 GHz SRRF  
AN16861-007  
AN16861-008  
n/a  
n/a  
n/a  
n/a  
Compact Flash 802.11b  
(EU countries) “N” opt.  
RK18230-1  
AK18182-1  
RK17735-006  
RK17735-007  
RK18230-1  
AK18182-1  
RK17735-006  
RK17735-007  
Compact Flash 802.11b  
(North America) “M” opt.  
802.11b SRRF (WiFi) “F”  
opt.  
n/a  
n/a  
RK17735-008  
RK18465-005  
n/a  
n/a  
RK17735-008  
RK17735-020  
802.11g SRRF “K” opt.  
tools needed:  
• Phillips head screwdriver  
Procedure outline  
The procedure consists of these basic steps:  
• Mechanical installation of the Wireless module.  
• Setting new parameters for the module. Certain modules are self-configuring,  
but most will need you to enter some information into the printer’s memory. ou  
must be certified to use Zebra’s proprietary software to perform this update.  
If you send your printer back to the Factory Repair Services, your printer will be updated  
as necessary to conform with the as-shipped configuration. Any changes you have made  
to the printer may be removed.  
Removing the Wireless Module  
1. Turn the Printer off.  
2. Remove the Battery Pack.  
3. Remove and retain the screw from inside the battery compartment.  
4. Remove the Wireless module, or if upgrading the printer from a cable ready  
unit, remove the cover. Lift up the module from the bottom of the unit and pull  
it out. Opening the latch to the printer’s media supply will make it easier to re-  
move the module.  
Installing the Wireless Module  
continued  
• 2-71 •  
RMAN-QLS-002 rev. A Repair Procedures  
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1. Remove the module from its static proof packaging. (Retain the packaging for  
storing the old module.) Insert the module into the printer by aligning the tabs  
on the module with the slots in the printer’s top cover. Rock the module down  
into the printer until it is seated.  
2. Secure the module with the screw retained from removing the old module.  
Upper Housing or  
Wireless Module  
Screw, #4-40 x 3/8”  
3. Install the Battery Pack.  
Set New Parameters  
If you are installing a 802.11 (WLAN) module, you can now use the Network setup wiz-  
ards in Label Vista (version 2.8 or higher) found under the Network Setup menu. Again  
you are urged to refer to the on-line help before you use these wizards, to determine  
what information you will need to set these parameters.  
Refer to the “Using Label Vista” topic in Section 1 for more information.  
If you have any questions about network settings you should contact the system admin-  
istrator for the LAN where the QL series printer will be operating.  
Installation of the Bluetooth module allows the advanced user to set many of the  
Bluetooth parameters through the use of the “get, set, do” commands outlined in Sec-  
tion 14 of the Programming Manual (revision “Lor higher). These commands are acces-  
sible only with printer applications of revision 40 or higher.  
RMAN-QLS-002 rev. A Repair Procedures  
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Keypad & diSpLay, QL220/220 pLuS/220 coSt Reduced-  
an16972-011, -012 & RK17735-031  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Preparation  
1. Turn the printer off and remove the battery pack  
2. Remove the Upper and Lower Housings.  
Removing the Keypad  
1. Unlock J6 on the MLB, and unplug the cable.  
2. Unlock J1 on the MLB and unplug the ground cable.  
3. Carefully peel the Keypad away from the QL 220 Chassis.  
Removing the LCD module  
1. Unlock J8 on the MLB and unplug the flex cable.  
2. Insert the corner of a credit card or a similar thin, flexible and non-conductive  
material between the glass surfiace of the LCD and the printer chassis.  
3. Using a small flat bladed screwdriver, lift each side of the LCD module clear of  
the printer Chassis.  
Installing the Keypad  
• 2-73 •  
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Note: Clean any old adhesive from the printer using Isopropyl alcohol and let dry before installing  
the Keypad.  
If installing an LCD Keypad, use particular care not to scratch the clear window on the  
printer chassis.  
1. Dress the flex cables on the bottom of the Keypad through the two slots on the  
bottom of the chassis.  
2. Peel the adhesive backing off the Keypad (Membrane or LCD) and adhere the  
Keypad to the Printer Chassis.  
Installing the LCD module  
1. Remove the Backer from the LCD display and then slide the LCD Display into the  
QL 220 Chassis. Note the orientation of the flex circuit.  
2. Plug the LCD cable into J8 on the MLB.  
Finish the installation of either the Keypad and/or the LCD module  
1. Install the Upper and Lower Housings.  
2. Install the Battery Pack.  
3. Test the Printer.  
LCD Display:  
Remove protective  
film from display  
prior to assembly  
Display or Mem-  
brane Keypad  
RMAN-QLS-002 rev. A Repair Procedures  
• 2-74 •  
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membRane & Lcd Keypad, QL320/320pLuS/320coSt Reduced  
& QL420/420pLuS/420coSt Reduced  
an16861-021, RK18235-1 & RK17735-032  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Introduction  
You will need to replace the Keypad if it has been physically damaged or no longer  
functions properly. This procedure covers installation of both the standard membrane  
Keypad and the optional LCD Keypad. Remember that changing the type of keypad  
from what was originally installed on your printer will also change the printer’s configu-  
ration.  
tools needed  
#1 Phillips Head Screwdriver.  
3/32” hex driver  
Preparation  
1. Turn the printer off and remove the battery pack.  
2. Remove the QuickLink Module.  
3. Remove the Upper Housing.  
Removing the Keypad  
1. Unlock J6 on the MLB, and unplug the flex circuit.  
2. Unlock J8 on the MLB, and unplug the flex circuit (LCD Keypads only)  
3. Remove the screw and nylon Washer securing the Keypad ground strap to the  
MLB. Retain this hardware.  
4. If you are replacing a Membrane Keypad:  
a. Unlock J6 on the MLB, and unplug the flex circuit.  
b. Remove the screw and Washer securing the Keypad ground strap to the MLB.  
c. Slide the Keypad Assembly out of the Lower Housing as shown.  
Installing an LCD Keypad  
1. Plug the flex circuit from the Keypad into J6 and lock the connector.  
2
Plug the Flex cable from the Display into J8 and lock the connector.  
3. Fold the static ground strap from the Keypad so that exposed copper on the  
end of the ground strap will make contact with the pad on the MLB. Secure the  
Ground Strap to the MLB with a 4-40 x 1/4” Socket Head Screw and #4 Nylon  
Washer.  
4. Slide the LCD Keypad into the Lower Housing, dressing the Keypad flex circuit  
(which plugs into J6) and the ground strap down and under the MLB. Gently  
fold loop of display Flex Circuit (which plugs into J8) over the top of Display. Al-  
low to relax back into place.  
5. Slide the Keypad Assembly into the Lower Housing as shown, dressing the flex  
circuits down and under the MLB.  
• 2-75 •  
RMAN-QLS-002 rev. A Repair Procedures  
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6. Install the Upper Housing.  
7. Install the QuickLink Module.  
8. Install the Battery Pack  
9. Test the Printer.  
Display Cable  
LCD Keypad  
Installing a Membrane Key-  
pad  
Keypad Cable  
Screw, Socket Hd. #4-40 x 1/4  
& #4 Nylon Washer  
1. Plug the flex circuit from the Keypad into J6.  
Lock the connector.  
2. Fold the static ground strap from the Keypad so that exposed copper on the  
end of the ground strap will make contact with the pad on the MLB. Secure the  
Ground Strap to the MLB with the #4-40 x 1/4 Socket Hd. Screw and #4 Nylon  
Washer.  
3. Slide the Keypad Assembly into the Lower Housing as shown, dressing the flex  
circuit and ground strap down and under the MLB.  
4. Install the Upper Housing  
5. Install the Wireless  
Membrane Keypad  
Module.  
6. Install the Battery  
Pack  
Screw, Socket Hd. #4-40 x 1/4  
& #4 Nylon Washer  
7. Test the Printer.  
Keypad Cable  
RMAN-QLS-002 rev. A Repair Procedures  
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pRinteR fRame, QL220/220pLuS- an16972-001  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Installing the Printer Frame  
1. Install the Media Cover on the Printer Frame.  
2. Install the Keypad and Display in the Printer Frame.  
3. Install the MLB in the Printer Frame.  
4. Install the Printer Assembly in the Printer Frame and secure with 2 screws from  
underneath the Printer Frame.  
5. Plug all cables into the MLB.  
6. Insert the Printer Frame in the Lower Housing.  
7. Secure the Printer Frame with (2) #4-40 x 3/16” Skt. Hd Screws from under-  
neath the Lower Housing.  
8. Press the Connector Cover onto the tab.  
9. Insert the Printer Frame in the Lower Housing, Media Cover end first, and then  
snap the Printer Frame in place.  
10. Install the Insulator over the PC Board.  
11. Install the Upper Housing.  
12. Close the media cover and latch in place.  
Printer Frame Assembly  
Dress motor cable and Media Width  
Sensor cable toward the bottom of the  
CPU Board.  
Screw #4-40 x 3/16” Skt. Hd.  
Torque = 5 in/lbs.  
• 2-77 •  
RMAN-QLS-002 rev. A Repair Procedures  
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pRinteR fRame, QL 320/320 pLuS- an16861-029 &  
QL 420/420 pLuS- an16753-012  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
tools needed  
#1 Phillips Head Screwdriver.  
3/32” Hex Driver  
Removing the Printer Frame  
1. Turn the printer off and remove the battery pack.  
2. Remove the QuickLink Module.  
3. Remove the Upper Housing.  
4. Remove the MLB.  
5. Remove the 4 Screws that secure the Printer Frame to the Lower Housing and  
remove the Printer Frame.  
9. Remove the optional Media Width Sensor. If the Printer is equipped with the  
Media Width Sensor option, pull the sensor cable free of the Printer Frame.  
6. If necessary, remove and retain the following from the Printer Frame:  
a. Media Cover.  
b. Latch Assembly.  
c. Media Assembly.  
d. Printhead Assembly.  
e. Motor.  
Install the new Printer Frame Assembly  
1. Assemble the Media Assembly onto the new Printer Frame:  
Refer to AN16753-001 for more details on installing the QL 420 Media Assembly.  
• Ensure the Gap Sensor Cable is in place.  
• Place the Media Assembly into the Printer Frame and rock it back into posi-  
tion.  
• Secure in place with (2) Screws.  
• If equipped with the optional Media Width Sensor, dress the Sensor cable  
through the retaining feature on the right hand side of the Printer Frame.  
2. Assemble the Media Cover Assembly.  
• Follow the procedure for reinstalling the Media Cover Assembly per AN16861-  
024 for QL 320 and AN16753-025 for QL 420.  
• Ensure the Hinge Pin passes behind the Sensor cable.  
• Press the Sensor cable firmly into its channel in the bottom of the Printer  
continued  
RMAN-QLS-002 rev. A Repair Procedures  
• 2-78 •  
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Media Assembly  
Gap Sensor Cable (part of Media  
Assembly)  
Printer Frame  
Screw (2 places)  
Frame.  
3. Install the Printhead Assembly  
• Follow the procedure for installing the Printhead Assembly in AN16861-027 for  
QL 320 or AN16753-006 for QL 420.  
• Secure the ground strap from the Bar Sensor Cable to the Printhead Assem-  
bly with the screw retained from when it was removed.  
• Install the Printhead Springs  
4. Install the Latch Assembly  
• Follow the procedure for installing the Latch Assembly as detailed in AN  
16861-025 for QL 320 or AN 16753-011 for QL 420.  
• Ensure the Latch Spring is properly held in place on the Printer Frame.  
• Verify proper operation of the Latch Assembly.  
5. Install the Printer Frame and Media Cover assembly into the Lower Cover.  
• Ensure that the Motor Cable and Bar Sense Cable and (optional) Media Width  
Sensor Cable will not be pinched between the Printer Frame and the Lower  
• 2-79 •  
RMAN-QLS-002 rev. A Repair Procedures  
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Cover.  
6. Re-attach the MLB and display.  
From  
# of connections  
CPu Connector #  
Printhead  
Flex circuit  
(28 conductor)  
J3  
Motor Cable  
4
3
J4  
Media Width  
Sensor (optional)  
J11 (bottom  
of board)  
Bar Sensor Cable  
Flex circuit  
J2  
J10  
J5  
(3 conductor)  
Gap Sensro/  
Printhead Ground  
Flex circuit  
(5 conductor)  
Label Presence Sensor  
Flex Circuit  
(4 conductor)  
• Plug the cables from the printer back into the MLB per the following table:  
7. Reassemble the Upper Cover and Module Housing  
• Re-install the Upper Housing per AN16861-010 (QL320) or AN16753-007 (QL  
420).  
• When re-installing the Upper Housing for the QL 420, ensure that the proper  
Corner Attachment Kit (ref. AN16753-010) is also re-installed.  
• Install the Module Housing as shown below Ensure the Module is secured  
with the retained screw through the battery compartment.  
8. Install the Battery and test the unit.  
• Install the Battery and turn the unit on.  
• Verify that all indicator lights turn on properly.  
• Verify proper operation of the printer by performing a two-key reset.  
• It is recommended you perform a complete unit test to verify proper opera-  
tion of all the printer features.  
RMAN-QLS-002 rev. A Repair Procedures  
• 2-80 •  
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connectoR dooR, QL 220 /QL220 pLuS - an16972-021  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
tools needed  
3/32” Hex Driver  
Remove the Lower Cover  
1. Turn the printer off and remove the battery pack.  
2. Remove the Lower Housing  
• Remove the Upper Housing by removing (3) Screws and pulling the upper  
housing clear.  
• Remove the two screws from the Printer Frame.  
• Pivot the Lower Cover away from the printer chassis until the Connector Door  
is free.  
Remove the Connector Door  
Pull the Connector Door away from the Printer Frame.  
Attach the new Connector Door  
Press the Door, Connector, Rubber over the retaining feature on the bottom of the  
Printer Chassis Assembly as shown.  
Re-assemble the Lower Housing to the Printer Frame.  
Printer shown with  
Lower Housing  
removed  
QL220 Door, Connector,  
p/n CA16548-1  
• 2-81 •  
RMAN-QLS-002 rev. A Repair Procedures  
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connectoR dooR, QL420 & QL420 pLuS- an16753-020  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
tools needed  
3/32” Hex Driver  
Remove the upper Housing  
1. Turn the printer off and remove the battery pack.  
2. Remove the Upper Housing and the QuickLink Module (or the Wireless Housing  
Module) per the procedure for AN16753-007.  
Note locking tabs  
on lower housing  
Door Connector  
p/n CA16404-1  
Install the Connector Door  
1. Slip the Door Connector over the tab on the Lower Housing as shown. Ensure  
the Door is secured by the tab feature on the Lower Housing.  
2. Reinstall the UpperHousing and the QuickLink module, the Wireless Housing, or  
the PCMCIA antenna assembly.  
RMAN-QLS-002 rev. A Repair Procedures  
• 2-82 •  
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motoR,QL220 & QL 220 pLuS - an16972-002  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Preparation  
1. Remove the Upper and Lower Housings and the PCB Cover.  
2. Remove the MLB from the printer.  
3. Remove the Printer Frame.  
Installing the Motor  
1. Insert the pinion of the Motor into the Printer Frame, noting location of the  
wires and connector. When the Motor’s mounting flange is in contact with the  
Printer Frame, rotate the Motor in the direction shown until it seats into place.  
Note: Push the Rack Lock away from the Motor while assembling.  
2. Secure the Motor with a Screw in the top hole of the Motor’s mounting flange.  
Screw, Socket Hd.  
#4-40 x 3/16”  
Motor  
Torque = 5 in/lbs.  
Push Rack Lock  
against Printer  
Frame while in-  
stalling Motor  
• 2-83 •  
RMAN-QLS-002 rev. A Repair Procedures  
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motoR, QL 320/320 pLuS & QL420/420 pLuS- RK18251-1  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
tools Needed  
#1 Phillips head screwdriver  
3/32” Hex Driver  
Removing the Motor  
1. Turn the printer off and remove the battery pack  
2. Remove the QuickLink Module  
3. Remove the Upper Housing  
4. Disconnect the MLB  
5. Remove the Printer Frame and Media Cover Assembly from the Lower Housing.  
6. Remove the Motor (1) from the Printer Frame by removing its mounting Screw  
(2) and twisting the motor away from the frame as shown at “2”.  
7. Install the new Motor by inserting the pinion through the hole in the Printer  
Frame and meshing it with the gears on the side of the Printer frame. Rotate  
the motor into place on the Printer Frame as shown at “3” and secure it with (1)  
Screw (supplied with the kit) .  
8. Hook the tabs on the Lower Housing into the Printer Frame and Media Cover  
Assembly. Rock the Printer Frame and Media Cover into position as shown at  
“4”.  
9. Secure the Printer Frame to the Lower Housing with (4) Screws as shown at “5”.  
Ensure that none of the sensor cables or the motor cables are pinched between  
the Printer Assembly and the Bottom Cover Prior to assembly.  
For ease of handling, close the media cover, but leave the latch in the open posi-  
tion.  
10. Plug the printer cables into the MLB. Using Table 1 as a guide, plug in the  
cables from the Printer to the MLB. Ensure all ZIF connectors for the flat flex  
1
3
2
RMAN-QLS-002 rev. A Repair Procedures  
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cables are locked.  
11. Assemble the Upper Housing to the Printer, and secure it with the retained hard-  
ware. At this time either the “D” rings, or the Carrying strap which was supplied  
with the printer should be reassembled. Note that the longer screws are used  
to secure the “D” rings.  
6. Install the QuickLink module. Plug the either the QuickLink module or the mod-  
ule housing supplied with the printer into the Top Housing, and secure with (1)  
screw through the battery compartment.  
7. Install the Battery Pack. Reinstall the Battery Pack and perform a two-key reset  
to verify that the Printer has been properly reassembled.  
8. Perfom the Unit Test procedure. Perform a complete unit test to ensure that the  
sensor calibrations are still correct, and the motor is operating correctly.  
5
4
3
5
5
5
J3  
J4  
J10  
J11  
J5  
J2  
From  
# of connections  
CPu Connector #  
Printhead  
Motor  
28 (Flex)  
4
J3  
J4  
Media Width Sensor (optional)  
Bar Sensor Cable  
3
J11 (bottom of board)  
3 (Flex)  
5 (Flex)  
4 (Flex)  
J2  
J10  
J5  
Gap Sensor/Printhead Ground  
Label Presence Sensor  
• 2-85 •  
RMAN-QLS-002 rev. A Repair Procedures  
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pRinthead, QL220- RK18278-1 & QL 220 pLuS- RK17735-016  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Installing the Printhead  
1. Install the Printhead Assembly. Insert the left hand mounting ear of the  
Printhead Assembly into the Printer Frame. Rotate the other end into the Printer  
frame and snap into place.  
2. Dress the Flex Cable from the Printhead Assembly through the Latch Lock.  
3. Dress the Sensor Cable through the cutout on the Printer Frame.  
Printhead Assy.  
Insert this end first, then pivot op-  
posite end into Printer Frame.  
Insert sensor cable through  
this coutout  
Printer Frame  
Insert printhead flex cable through cout-  
out in the Latch lock.  
4. Install Printhead Springs. Snap (2) Springs, Printhead into place. Note that the  
loop end of the springs fit against the Printer Frame, and the other end will snap  
into slot features on the Printhead Assembly.  
5. Install the Latch Shaft. Slide the Latch Shaft into the Printer Frame so that the  
Shaft protrudes from either side of the Printer Frame. The loops from the  
Printhead Springs should rest on the shaft.  
Printhead Springs  
Latch Shaft  
RMAN-QLS-002 rev. A Repair Procedures  
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pRinthead, QL320 - RK18277-1 & QL 320 pLuS- RK18465-003  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Installing the Printhead  
1. Secure  
the Static  
Screw #4-40 x 3/16”  
Torque = 5 in-lbs  
Cable.  
Secure  
Note: Ears of Printhead Assembly Mounting  
plate slide into Printer Frame.  
Printhead Assembly  
the static  
ground  
Latch Shaft  
section of  
the Gap Sensor Cable to the back  
of the Printhead Assembly with a  
Screw.  
2. Locate the Printhead Assembly.  
Slide the Printhead Assembly into  
the Printer Frame as shown. The  
ears on the Printhead Assembly  
will fit into the Printer frame where  
shown. Dress the Printhead Cable as shown.  
3. Install the Latch Shaft. Slide the Shaft, Latch into the Printer Frame.  
4. Install the Printhead Springs. Snap the Printhead Springs into position. The leg  
of the Spring with a loop will fit over the Shaft, Latch and the other leg will fit  
into a slot in the Printhead Assembly.  
Press Springs into place with Tool p/n AU16259-1(Use of  
tool is optional)  
Printhead Springs  
Note: This end of the Printhead  
Spring snaps into mating slots on  
the Printhead Assembly.  
Note: Location of loop on  
Printhead Spring secures  
over the Latch Shaft.  
P/n CL16985-3 CBL FLEX CRKT SHLD QL4 LBL SEN is included with repair kit RK18465-003.  
Instructions for installation of this cable are included in the procedure for AN16861-  
015  
• 2-87 •  
RMAN-QLS-002 rev. A Repair Procedures  
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pRinthead, QL 420- RK18252-1 & QL 420 pLuS- RK17735-004  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Introduction  
Refer to the Troubleshooting techniques in the front section of this manual and the QL  
User’s Manual to determine if the Printhead should be replaced. If you have ascertained  
that the Printhead Assembly needs replacing, you must follow the following procedure:  
tools needed  
#1 Phillips Head Screwdriver.  
3/32” Hex Driver  
Preparation  
1 Turn the printer off and remove the battery pack  
2 Remove the Radio Module per AN16753-018 & -019  
3 Remove the Top Cover per AN16753-007  
4 Remove the Latch Assembly per AN16753-011  
5. Remove the Mounting Screws from the MLB to allow access to the Printhead  
connector. It is not necessary to unplug the Keypad from the MLB.  
Remove the Printhead  
1. Unplug the flex cable to the printhead.  
Release the locking latch of connector J3 and pull the flex cable from the  
printhead out of the connector as shown at “1”.  
2. Unplug the label present sensor from the C.P.U. Board.  
Release the locking latch of connector J5 and pull the flex cable from the La-  
bel Presence Sensor out of the connector as shown at “2”.  
3. Remove the (2) Printhead Springs.  
Pull the (2) Printhead Springs (shown at “3”) out of the printer and discard  
them. The Printhead Repair kit includes new printhead springs.  
4. Pull the Printhead Assembly out of the printer.  
Lift the Printhead out of the right hand side of the printer as shown at “4”,  
and then pull the pivot point of the printhead out of the left hand side of the  
printer frame as shown at “5”.  
5. Unscrew the Gap Sensor ground strap from the printer.  
Unscrew the ground strap from the Gap Sense cable from the Printhead As-  
sembly heatsink as shown at “6”. Retain the screw.  
Install the new Printhead Assembly  
1. Plug the Printhead Flex cable into J3 on the C.P.U. Board  
Plug the Flex Circuit from the Printhead into J3 of the MLB, and close the con-  
RMAN-QLS-002 rev. A Repair Procedures  
• 2-88 •  
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3
5
4
1
2
6
continued  
• 2-89 •  
RMAN-QLS-002 rev. A Repair Procedures  
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nector latch as shown at “1”.  
2. Plug in the Label Present Sensor  
Dress the flex circuit from the Label present sensor under the latch lock and  
plug it into J5 of the MLB as shown at “2”. Close the connector latch.  
3. Secure the Gap Sense ground strap  
Secure the ground strap from the Gap Sense cable to the printhead heatsink  
with the retained Phillips head screw as shown at “3”. A spare screw is sup-  
plied with the Printhead replacement kit.  
4. Install the Printhead Assembly  
Insert the left hand tab of the printhead into the slot on the Printer Frame As-  
sembly (“4”). Rotate the printhead into the slot on the other side of the Print-  
er Frame at “5”.  
5. Install the Latch Shaft  
Install the Latch Spring (removed with the Latch Assembly) over the right  
hand side of the Latch Pivot Shaft. Hold the Latch Assembly at an angle  
to the Printer Frame (“1”) with one leg of the Latch Spring captured behind  
4
5
1
2
3
RMAN-QLS-002 rev. A Repair Procedures  
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the vertical feature on the Printer Frame. Slide the Latch Pivot Shaft into the  
Printer Frame so that the end of the shaft is flush with the left hand side of  
the Printer Frame.  
6. Install the Printhead Springs  
Install the (2) Printhead Springs supplied with the Printhead Repair kit by  
pressing the end with the loop over the Latch Pivot Shaft, and the short hook  
on the other end into the heat sink on the Printhead Assembly (shown at “2”).  
7. Install the Latch Assembly  
Complete re-installation of the Latch Assembly (Refer to AN16753-011) The  
Latch Assembly should be held in the open position by the Latch Spring.  
Rotating the Latch Assembly closed should allow the Latch Lock to snap into  
place, retaining the Latch Assembly in the closed position.  
8. Install the Upper Housing  
Assemble the Upper Housing to the Printer (refer to AN16753-007). At this  
time either the “D” rings, or the Carrying Strap supplied with the printer  
1
2
continued  
• 2-91 •  
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should be reassembled. Note that the longer screws are used to secure the  
“D” rings.  
9. Install the Radio Module.  
Refer to AN16753-018. Plug the either the Radio Module or the module hous-  
ing supplied with the printer into the Top Housing, and secure with (1) screw  
through the battery compartment.  
10. Clean the Printhead  
Clean the glass surface of the printhead with either the cleaning pen supplied  
with the printer or a Q-tip saturated with alcohol. Follow the cleaning proce-  
dures outlined in the Maintenance section of the Users Guide.  
11. Reinstall the Battery Pack  
Reinstall the Battery Pack and perform a two-key reset to verify that the  
Printhead has been properly installed.  
12. Test and Calibrate the Printer.  
The printer should be run through the complete unit test procedure detailed  
in Section 2 of the QL Maintenance Manual to properly calibrate the new sen-  
sor.  
RMAN-QLS-002 rev. A Repair Procedures  
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Latch, QL 220/QL 220 pLuS- an16972-004  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Installing the Latch  
1. Slide the Latch Shaft on the Printer Frame Assembly from Station 3 in the direc-  
tion shown until flush with the side of the Printer Frame.  
2. Slide the Latch Spring over the other end of the Latch Shaft, and ensure that  
the arm of the Spring is retained by the feature on the Printer Frame.  
NOTE: Flip the Peeler Bail forward in the position shown for greater ease of assembly.  
3. Slip the Latch Assembly over the protruding end of the Latch Shaft. Slide it par-  
tially onto the Shaft and ensure that the other arm of the Latch Spring will slip  
into the groove on the inside surface of the Latch.  
Latch Assembly  
This arm of the Latch Spring  
must fit into the groove on  
the inside of the latch  
Slide Latch Shaft  
flush with this side  
of the Printer Frame  
Latch Spring  
Ensure arm of spring  
is seated on feature of  
Printer Frame.  
Printer Frame  
4. Press the Latch Lock open as shown at “1” on the next page. Insert either a  
3/23” hex driver or a spare Peeler bar between the latch Lock and the Printer  
Frame as shown at “2” to hold the Latch Lock in position.  
5. Rotate The Latch Assembly Into Position. Holding the Latch assembly in posi-  
tion on the Latch Shaft, rotate it into position the Printer Frame as shown at “3”.  
The latch Spring must snap into position against the inside of the Latch As-  
sembly, and the hole in the l.h. side of the Latch Assembly must line up with the  
• 2-93 •  
RMAN-QLS-002 rev. A Repair Procedures  
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Latch Shaft.  
6. Press The Latch Shaft Into Position. Press the Latch Shaft so that the ends are  
flush with the sides of the Latch Assembly.  
7. Remove the tool from between the Latch Lock and the Printer Frame.  
8. Apply SuperLube to the bearing points on each end of the Latch Lock where  
shown in details.  
9. Test the Latch. Press the Latch Lock Button. The latch assembly should pop  
open and be held in position by the Latch Spring.  
10. Close the latch assembly, and ensure that the Latch Lock snaps back into posi-  
tion and the latch Assembly is locked in place.  
Apply Super-Lube to  
Latch Assembly  
inside surface  
Latch Shaft  
Latch Spring  
Apply Super-Lube to gray areas  
Apply Super-  
Lube to gray  
area  
Insert 3/32” Hex  
Driver or Spare  
Peeler bar  
RMAN-QLS-002 rev. A Repair Procedures  
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Latch, QL 320/ QL 320 pLuS- an16861-025  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Installing the Latch  
1. Slide the Latch Shaft in the Printer Frame until the end is flush to the frame as  
shown. Slide the Latch Spring over the end of the Shaft as shown.  
Slide the Shaft, Latch until  
this end is flush with the  
Printer Frame.  
Latch Spring  
Note: leg of the Torsion Spring  
is captured by this feature on the  
Printer Frame.  
2. Slide the Latch Assembly over the right end of the Latch Shaft, holding it at an  
angle as shown, and then rotate the Latch down into the Printer Frame assem-  
bly, capturing the other leg of the Latch Spring.  
Slide the Latch Shaft back  
into place until this end is  
flush with the Latch.  
4. Secure the Latch Assembly. Line the left side of the latch assembly up with the  
hole for the Latch Shaft. Slide the Latch Shaft back to the left until both ends of  
the Shaft are flush with the outside of the Latch.  
• 2-95 •  
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Latch, QL 420/ QL 420 pLuS- an16753-011  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Introduction  
The Latch Assembly consists of the Latch. The Peeler Assembly, the Latch Shaft and  
the Latch Spring. If any of these components become physically damaged, the entire  
Latch Assembly should be replaced.  
tools needed  
#1 Phillips Head Screwdriver.  
3/32” hex driver  
Removing the Latch  
1. Turn the printer off and remove the battery pack.  
2. Remove the QuickLink Module.  
3. Remove the Upper Housing.  
4. Open the Media cover. Press the latch release button and open the Media  
Cover as though loading media. Remove any media from the printer. (Refer to  
the User’s Manual)  
5. Remove the Latch Assembly. Push the latch pivot shaft out of the printer.  
You can use the 3/32” hex driver to get the shaft started. Pull the shaft out far  
enough so that you can rock the Latch Assembly up and away from the print-  
er. Pull the Latch shaft and the latch clear of the printer. Retain the Printhead  
Springs.  
Installing the Latch  
Latch Assembly  
Latch Shaft  
Rotate Latch  
Assembly out  
of the printer.  
Remove the Latch  
Spring  
RMAN-QLS-002 rev. A Repair Procedures  
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1. Install the Latch Shaft. Slide the Latch Pivot Shaft into the Printer Frame so that  
the end of the shaft is flush with the left hand side of the Printer Frame.  
2. Install the Printhead Springs. Snap the (2) Printhead Springs back into place  
between the Printhead Assembly and the Latch shaft .  
3. Install the Latch Assembly. Hold the Latch Assembly at an angle to the Printer  
Frame with one leg of the Latch Spring captured behind the vertical feature on  
the Printer Frame. Rotate the Latch Assembly over the Printer Frame until the  
hole in the left hand side of the Latch Assembly lines up with the Latch Pivot  
Shaft.  
Press the Latch Pivot shaft all the way into the Latch Assembly. The Latch As-  
sembly should be held in the open position by the Latch Spring. Rotating the  
Latch Assembly closed should allow the latch Lock to snap into place, retaining  
the Latch Assembly in the closed position.  
4. Install the Upper Housing.  
5. Install the QuickLink module.  
6. Install the Battery Pack.  
7. Perform a two key reset to verify the printer was reassembled correctly.  
Latch Assembly  
Latch Spring  
Latch Shaft  
Ensure that  
spring leg hooks  
over feature in  
Printer Frame.  
• 2-97 •  
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peeLeR Shaft & RoLLeR, QL 220/220 pLuS- an16972-006;  
QL 320/ QL 320 pLuS- an16861-026 & QL 420- an16753-024  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Preparation:  
1. Turn the printer off and remove the battery pack.  
2. Remove the Latch Assembly Module  
Removing the Peeler Shaft and Roller  
1. Turn the Latch Assembly upside down.  
2. Carefully pull on one flange of the plastic latch and pull out the Peeler Shaft and  
Roller Assembly. Ensure the two springs and journals installed in the Latch As-  
sembly remain in place.  
Installing the Peeler Shaft and Roller  
1. Snap the new Peeler Shaft and Roller Assembly into the Latch. The tabs on the  
bottom of the Peeler Bail will sit in the Journals. The guides on the side of the  
Peeler Shaft and Roller Assembly should ride in the guides on the Latch.  
The Peeler Bail Assembly should pivot freely back and forth inside the Latch,  
and detent into the open and closed positions.  
2. Install the Latch Assembly per AN16972-004 (QL 220); AN16861-025 (QL 320) or  
AN16753-011 (QL 420) and reassemble the printer.  
Note position of “ears”  
Peeler Shaft and Roller Assembly  
This feature will ride  
in the guide slots on  
the side of the Latch  
Journal (part of Latch  
Assembly )  
Spring (part of  
Latch Assembly)  
Latch Assembly  
RMAN-QLS-002 rev. A Repair Procedures  
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mLb, QL 220- an16972-013, RK18259-1;  
QL 220 pLuS-RK17735-017  
QL 220 coSt Reduced-RK17735-029  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Removing the MLB  
1. Turn the printer off and remove the battery pack.  
2. Remove the Upper Housing.  
3. Remove the Lower Housing.  
4. Unplug all cables from the MLB.  
5. Remove the Printer Assembly.  
6. Spread apart the sides of the Printer Chassis and remove the MLB.  
Installing the MLB  
1. Spread apart the sides of the Printer Chassis and rotate the board into the Print-  
er Chassis until it snaps into place. The MLB will be retained between the tabs  
in the Printer Chassis so that it is square ans secure.  
2. Install the Printer Assembly.  
3. Plug in the printer cables per the following table:  
Printer Chassis  
MLB  
• 2-99 •  
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From  
Keypad Ground  
Bar Sensor  
# of connections  
1 (Flex)  
MLB Connector #  
J1 (GROUND)-  
3 (Flex)  
J2 (BAR)(bottom of board)-  
J3 (PRINTHEAD)-  
J4 (MOTOR)(bottom of board)-  
J5 (PEEL)-  
Printhead  
28 (Flex)  
4
Motor  
Label Presence Sensor  
Membrane Keypad  
LCD Keypad  
4 (Flex)  
8 (Flex)  
J6 (KEYPAD)-  
10 (Flex)  
J8 (LCD)-  
QuickLink Module  
Gap Sensor/Printhead Ground  
J9 (MODULE)-  
5 (Flex)  
J10 (GAP)-  
Notes:  
For ease of assembly, install the Printhead and Motor Cables first, then install the optional  
Media Width Cable.  
Connectors for cables are polarized. The connectors will only fit in one direction. Do not  
try to force the connectors in place.  
Flex cables install in zero insertion force (ZIF) connectors. Pull the connector open, insert  
the cable, and close the connector to retain the flex cable.  
Dress all cables away from mounting bosses so they won’t get pinched during the next as-  
sembly steps.  
4. Set the Compatibility Switch per PCC digit 10:  
If PCC digit 10 = 0, set SW1 to NORMAL CCW (turn fully counterclockwise ).  
Motor Cable  
Twist excess cable  
Bar Sense Cable  
Keypad  
J1  
J4  
J11  
J2  
Keypad  
Printhead  
Cable  
LCD Cable  
Gap Sensor Cable  
Label Presence Sensor Cable  
continued  
RMAN-QLS-002 rev. A Repair Procedures  
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If PCC digit 10 = S, set SW1 to OTHER CW (turn fully clockwise) (PIM-compati-  
ble).  
5. Install the Keypad cables per the table on the preceding page..  
6. Install the Upper Housing and Lower Housing.  
Compatibility Switch (SW1).  
7. Install the Battery Pack.  
8. Load the application. You must reload the printer’s original application files.  
The application files can either be stored on your local system or can be down-  
loaded from the factory’s database.  
You must have authorization from Zebra to access the application files from the factory.  
10. Calibrate the Sensors. Using the gray and white swatches, follow the on-screen  
instructions on the unit test and set-up software to properly calibrate the sen-  
sors.  
• 2-101 •  
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mLb, QL 320- an16861-018, RK18234-1;  
QL 320 pLuS- RK18465-002  
QL 320 coSt Reduced- RK18465-006  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray).  
All electronic components must be placed on an ESD protective tray. If stored, any elec-  
tronic components must be placed in antistatic bags.  
Removing the MLB  
1. Turn the printer off and remove the battery pack.  
2. Remove the QuickLink Module.  
3. Remove the Upper Housing.  
4. Remove the Keypad.  
5. Unplug all cables from the MLB.  
6. Remove the remaining Screw securing the MLB and pull the MLB out of the  
printer.  
Installing the MLB  
1. Plug the Head Open Switch cable and the Media Width Sensor (optional) cables  
into the bottom of the MLB.  
From  
Head Open Switch  
Bar Sensor  
# of connections  
2
CPu Connector #  
J1 (HEAD)(bottom of board)  
J2 (BAR)  
3 (Flex)  
28 (Flex)  
4
Printhead  
J3 (PRINTHEAD)  
J4 (MOTOR)  
Motor  
Label Presence Sensor  
Membrane Keypad  
LCD Keypad  
4 (Flex)  
8 (Flex)  
10 (Flex)  
J5 (PEEL)  
J6 (KEYPAD)  
J8 (LCD)  
QuickLink Module  
Gap Sensor/Printhead Ground  
Media Width Sensor (optional)  
Keypad Ground  
J9 (MODULE)  
5 (Flex)  
3
J10 (GAP)  
J11 (WIDTH)(bottom of board)  
Screw  
1 (Flex)  
2. Plug the remaining cables into the MLB per the following table:  
Notes:  
1 . For ease of assembly, install the Printhead and Motor Cables first, then install the op-  
tional Media Width Cable.  
2 . Connectors for cables are polarized. The connectors will only fit in one direction. Do  
not try to force the connectors in place.  
3.Flex cables install in zero insertion force (ZIF) connectors. Pull the connector open, insert  
the cable, and close the connector to retain the flex cable.  
4.Dress all cables way from mounting bosses so they won’t get pinched during the next as-  
sembly steps.  
3. Lower the MLB into the Lower Housing. Insure that the board is pushed up un-  
continued  
RMAN-QLS-002 rev. A Repair Procedures  
• 2-102 •  
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der the retainer features and sits on the locator pin in the Lower Housing.  
4. Secure the Ground Strap with 1 Screw and Nylon Washer.  
5. Install a second Screw to secure the MLB.  
6. Set the Compatibility Switch per PCC digit 10  
If PCC digit 10 = 0, set SW1 to NORMAL CCW (turn fully counterclockwise ).  
If PCC digit 10 = S, set SW1 to OTHER CW (turn fully clockwise).  
7. Install the Keypad.  
8. Install the Upper Housing.  
9. Install the QuickLink module.  
10. Install the Battery Pack.  
11. Load the application. You must reload the printer’s original application files.  
The application files can either be stored on your local system or can be down-  
loaded from the factory’s database.  
You must have authorization from Zebra to access the application files from the factory.  
12. Calibrate the Sensors. Using the gray and white swatches, follow the on-screen  
instructions on the unit test and set-up software to properly calibrate the sen-  
sors.  
Printhead Cable to J3  
Motor Cable to J4  
Label Present Sensor Cable  
to J5  
Screw, #4-40 x 1/4”, Socket Hd.  
Torque = 5 in-lbs  
MLB  
Head Open Switch- Plug  
Turn fully CCW for “Normal”  
or fully CW to “Other” or “S”  
Bar Sense Cable  
to J2  
Media Width Sensor to J11 (bot-  
tom of Board)  
Gap Sense/Printhead Ground cable  
to J10  
• 2-103 •  
RMAN-QLS-002 rev. A Repair Procedures  
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mLb, QL 420- an16753-016 & RK18228-1;  
QL 420 pLuS- RK17735-002  
QL 420 coSt Reduced- RK17735-029  
You must use an ESD strap and work at a properly grounded workstation (antistatic mat or  
tray). All electronic components must be placed on an ESD protective tray. If stored,  
any electronic components must be placed in antistatic bags.  
Introduction  
You will need to replace the MLB if it has been determined that it no longer functions  
properly. This procedure covers installation of MLBs with either 1M/1M or 2M/2M  
SRAM/Flash Memory configurations.  
You must re-load the printer’s application files and re-calibrate the printer after replac-  
ing the MLB.  
Remember that if you change the MLB type from what was originally installed on your  
printer, you must also change the printer’s configuration label.  
Removing the MLB  
1. Turn the printer off and remove the battery pack.  
2. Remove the QuickLink Module.  
3. Remove the Top Cover.  
4. Remove the Keypad.  
5. Unplug all remaining cables from the MLB as shown below.  
6. Remove the MLB. Remove the remaining Screw securing the MLB. Pull the  
MLB out of the printer.  
Installing the MLB  
1. Slide the replacement MLB into place on the Lower Housing. Insure that the  
board is pushed up under the retainer features and sits on the locator pin in the  
Lower Housing. Secure in place with (1) of the Screws supplied in the kit where  
shown. Ensure that the tab on the Latch Lock slides through the head open de-  
tector without interference.  
2. Plug in the printer cables per the following table:  
RMAN-QLS-002 rev. A Repair Procedures  
• 2-104 •  
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From  
Head Open Switch  
Bar Sensor  
# of connections  
2
CPu Connector #  
J1 (HEAD)(bottom of board)  
J2 (BAR)  
3 (Flex)  
28 (Flex)  
4
Printhead  
J3 (PRINTHEAD)  
J4 (MOTOR)  
Motor  
Label Presence Sensor  
Membrane Keypad  
LCD Keypad  
4 (Flex)  
8 (Flex)  
10 (Flex)  
J5 (PEEL)  
J6 (KEYPAD)  
J8 (LCD)  
QuickLink Module  
Gap Sensor/Printhead Ground  
Media Width Sensor (optional)  
Keypad Ground  
J9 (MODULE)  
5 (Flex)  
3
J10 (GAP)  
J11 (WIDTH)(bottom of board)  
Screw  
1 (Flex)  
Notes:  
For ease of assembly, install the Printhead and Motor Cables first, then install the optional  
Media Width Cable.  
Connectors for cables are polarized. The connectors will only fit in one direction. Do not  
try to force the connectors in place.  
Flex cables install in zero insertion force (ZIF) connectors. Pull the connector open, insert  
the cable, and close the connector to retain the flex cable.  
Dress all cables away from mounting bosses so they won’t get pinched during the next as-  
sembly steps.  
3. Set the Compatibility Switch per PCC digit 10  
If PCC digit 10 = 0, set SW1 to NORMAL CCW (turn fully counterclockwise ).  
If PCC digit 10 = S, set SW1 to OTHER CW (turn fully clockwise).  
4. Secure the MLB. Slide the MLB into place on the Lower Housing. Insure that  
the board is pushed up under the retainer features and sits on the locating pin  
in the Lower Housing. Secure in place with (1) of the retained screws where  
shown. Ensure that the tab on the Latch Lock slides through the head open de-  
tector without interference.  
5. Install the Keypad.  
6. Install the Upper Housing.  
7. Install the QuickLink module.  
8. Install the Battery Pack.  
9. Load the application. You must reload the printer’s original application files.  
The application files can either be stored on your local system or can be down-  
loaded from the factory’s database.  
You must have authorization from Zebra to access the application files from the factory.  
10. Calibrate the Sensors. Using the gray and white swatches, follow the on-screen  
instructions on the unit test and set-up software to properly calibrate the sen-  
sors.  
continued  
• 2-105 •  
RMAN-QLS-002 rev. A Repair Procedures  
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Turn SW1 CCW all the way for PCC digit 10 = 0;  
Turn SW1 CW all the way for PCC digit 10 = S  
Motor Cable- Plug into  
J4  
Screw, Socket  
Hd. #4-40 x1/4”  
Optional Media Width  
Sensor Cable- Plug into  
J11 on bottom of CPU  
Assy  
MLB QL 420  
p/n CQ16987-G4;or  
MLB QL 420 Plus:  
p/n CQ16923-G4  
Bar Sensor  
Flex Circuit-  
Plug into J2  
Gap Sensor/Printhead  
Ground Flex Circuit- Plug  
into J10  
Label Presence  
Flex Circuit- Plug  
into J5  
Printhead Flex Circuit-  
Plug into J3  
Tab on Latch Lock  
must slide through  
head open detec-  
tor on MLB after  
assembly.  
RMAN-QLS-002 rev. A Repair Procedures  
• 2-106 •  
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beLt cLip, QL 220/220 pLuS, QL 320/320 pLuS & QL420/420 pLuS  
- an16744-1 & an16753-009  
tools needed:  
Phillips Head Screwdriver  
Removing the Belt Clip  
1. Remove the (2) Screws securing the Belt Clip to the Lower Housing.  
2. Remove the old Belt Clip.  
Installing the Belt Clip  
1. Slide the Belt Clip into the Belt Clip Retainer.  
2. Secure the Belt Clip and Belt Clip Retainer to the bottom of the printer with (2)  
Screws (supplied) as shown.  
Belt Clip Retainer  
QL220  
Belt Clip  
Screw (2)  
QL320  
Belt Clip Retainer  
M3 x 10mm Self Tapping Screw  
Torque = 5 in-lbs  
Belt Clip  
Belt Clip Retainer  
Belt Clip  
QL420  
Screw (2)  
• 2-107 •  
RMAN-QLS-002 rev. A Repair Procedures  
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d-RingS, QL 320/ 320 pLuS- an16753-010;  
caRRying StRap, QL 220/220 pLuS, QL 320/320 pLuS &  
QL 420/ 420 pLuS- an16753-009  
AN16753-010: Install the D-Rings  
Position the 2 D-Rings between the upper and Lower Housing and install the 2 #4-40 x  
1” Socket Head Screws.  
AN16753-009: Install the Carrying Strap  
Slide the 2 Sleeves into the loops of the Carrying Strap.  
Slide the 2 Sleeves between the upper and Lower Housing, capturing the Carrying  
Strap between the upper and lower covers. Secure the Upper and Lower Housings  
with the 2 #4-40 x 1” Socket Head Screws.  
Carrying Strap, Short  
Sleeve (2)  
D-Ring  
#4-40 x 1” Screw  
Torque = 5 in-lbs  
RMAN-QLS-002 rev. A Repair Procedures  
• 2-108 •  
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coRneR attachment Kit, QL 320/320 pLuS &  
QL420/420 pLuS- an16753-010  
Introduction:  
This kit supplies you with the parts needed to:  
• Replace the “D” rings supplied as standard equipment with the printer. or  
• Install the bushings supplied for use with the optional carrying strap.  
tools needed:  
3/32” hex driver  
Removing the “D” Rings  
1. Remove the (2) Screws securing the upper and lower covers of the printer.  
2. Slide the (2) “D” rings out from the Printer.  
Installing the “D” Rings  
1. Slide the (2) “D” rings into the Printer.  
2. Install the (2) Screws supplied with the kit.  
Removing the Bushings  
1. Remove the (2) Screws securing the upper and lower covers of the printer,  
2. Slide the (2) bushings and the Carrying Strap out from the Printer.  
Installing the Bushings  
1. Slide the (2) bushings supplied with the kit into the loops of the Carrying Strap  
(not supplied with this kit.) If you will be installing a printer in a Mobile Mount  
application, you should not install the carrying strap.  
2. Slide the Bushings back into the Printer between the upper and lower housings.  
3. Install the (2) Screws supplied with the kit.  
Carrying Strap  
“D” Ring  
Bushing  
Screw  
• 2-109 •  
RMAN-QLS-002 rev. A Repair Procedures  
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KicKStand option, QL 220/ 220 pLuS, QL 320/320 pLuS & QL  
420/420 pLuS - an16744-1 & an16972-022  
Kickstand  
Install the Kickstand (QL 220 ilustrated)  
Hook one of the pivots of Kickstand into the Retainer.  
Snap the other pivot into place.  
RMAN-QLS-002 rev. A Repair Procedures  
• 2-110 •  
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batteRy RepLacement, QL 220/220 pLuS, QL 320/ 320 pLuS, &  
QL 420/ 420 pLuS  
Removing the Battery Pack.  
Press the battery latch toward the battery and lift the battery out of the printer.  
Installing the Battery Pack.  
1. Rotate the Belt Clip to clear the battery compartment.  
2. Insert the battery pack, and rotate the clip end of the pack into the battery com-  
partment until the battery locks in place.  
At16004-1  
(QL220)  
Battery  
At16004-1  
(QL320)  
Battery  
At16393-1  
(QL420)  
Battery  
• 2-111 •  
RMAN-QLS-002 rev. A Repair Procedures  
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Section 3 • QL SerieS configurationS  
and PartS  
uSing the Product configuration code  
Each QL series printer has a Product Configuration Code (PCC). When ordering  
replacement parts, use the PCC code to determine the features installed on your  
printer. Then use the exploded views to determine which kit to order.  
Contact Customer Service if you are unsure of the correct part or assembly  
number. Refer to “Factory Repair & Parts Ordering Procedure” for further  
information on ordering parts.  
ComPonent rePlaCement ProCedureS  
If you install a part on a QL series printer different from the originally installed  
component, you may have to change the configuration status (PCC code) of the  
printer.  
A change in the printer’s configuration status requires an update to the  
configuration label. This step enables service and technical support personnel to  
accurately diagnose any problems which may occur with your printer.  
Repair kits identified for use with QL Plus models are not interchangeable with  
similar QL kits. Kits identified for use with QL models are not interchangeable with  
similar QL Plus kits. Repair kits not specifically identified for use with either QL or  
QL Plus models can be used on both models.  
If you need to send your printer to the Factory Service Center (FSC), your printer  
will be updated as necessary to conform with the configuration label.  
Notes: If the label does not properly identify the printer’s current configuration, any changes you  
have made to the printer’s configuration may be removed should it be returned to Zebra.  
If you contact Zebra’s technical support staff, you will be asked for your unit’s configuration  
number. If the configuration number you supply does not correspond to the printer’s actual status, any  
technical support you receive may not be accurate.  
RMAN-QLS-002 rev. A Replacement Kits  
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factory rePair and PartS ordering Procedure  
If you need to return a printer to the factory for repair or upgrade, a Return  
Material Authorization (RMA) must be issued from Repair Services prior  
to returning any assemblies, PC boards, printers, cables, etc. for repair or  
replacement. The name, address, contact and phone number of the company that  
equipment is to be returned to must also be provided. A problem description is  
also necessary.  
When replacing items always refer to the Product Configuration Code to insure the  
correct part for your specific unit is being ordered. If you are unsure of the correct  
part, contact Zebra Customer Service with the unit serial number, and the Product  
Configuration Code to obtain the appropriate part number(s). The serial number  
label and Product Configuration Code label are either on the bottom or the back  
of the printer. Refer to Repair Manual Organization page for more information on  
label location. Portable printers with the optional protective boot will have to have  
the lower boot removed to gain access to the PCC label.  
Equipment received without return authorization will not be accepted.  
rePair ServiceS contact information  
in tHe uSa  
Zebra Technologies Corporation,LLC  
333 Corporate Woods Parkway  
Vernon Hills, Illinois 60061-3109 USA  
Phone: +1.847.913.2259  
Fax: +1.847.913.8766  
e-mail: repair@zebra.com  
RMA requests: repair@zebra.com  
in euroPe  
Zebra Technologies Europe, Limited  
Zebra House  
The Valley Centre, Gordon Road  
High Wycombe  
Buckinghamshire HP13 6EQ, United Kingdom  
Telephone: +44 1494 768298  
Fax: +44 1494 768210  
e-mail: tseurope@zebra.com  
RMA requests: ukrma@zebra.com  
Ask for Customer Support  
• 3-113 •  
RMAN-QLS-002 rev. A Replacement Kits  
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QL 220 Product configuration code (Pcc)  
Q 2 _ - _ _ _ _ _ 0 _ _ - _ _  
QL 220/220 Plus Printer  
SRAM/FLASH  
_ _ B - _ _ _ _ _ 0 _ _ - _ _  
_ _ C - _ _ _ _ _ 0 _ _ - _ _  
_ _ D - _ _ _ _ _ 0 _ _ - _ _  
2M/2M  
8M/4M (QL 220 Plus)  
16M/8M (QL 220 Plus)  
KEYPAD/DISPLAY  
_ _ _ - L _ _ _ _ 0 _ _ - _ _  
_ _ _ - M _ _ _ _ 0 _ _ - _ _  
LCD  
Membrane  
CHARACTER SET  
_ _ _ - _ U _ _ _ 0 _ _ - _ _  
US/Candian English/Latin 1 & 5  
(Including Turkish)  
_ _ _ - _ D _ _ _ 0 _ _ - _ _  
_ _ _ - _ F _ _ _ 0 _ _ - _ _  
_ _ _ - _ G _ _ _ 0 _ _ - _ _  
_ _ _ - _ H _ _ _ 0 _ _ - _ _  
_ _ _ - _ I _ _ _ 0 _ _ - _ _  
Chinese 16 x 16  
Japanese 16 x 16  
Japanese 24 x 24  
Chinese 16 x 16 (simplified)  
Chinese 24 x 24 (simplified)  
COMMUNICATION-WIRELESS/SRRF  
None (cable communications only)  
IrDA  
_ _ _ - _ _ 1 _ _ 0 _ _ - _ _  
_ _ _ - _ _ 2 _ _ 0 _ _ - _ _  
_ _ _ - _ _ B _ _ 0 _ _ - _ _  
_ _ _ - _ _ F _ _ 0 _ _ - _ _  
_ _ _ - _ _ K _ _ 0 _ _ - _ _  
_ _ _ - _ _ M _ _ 0 _ _ - _ _  
_ _ _ - _ _ N _ _ 0 _ _ - _ _  
Bluetooth™  
WLAN 802.11b (Zebra Value Radio)  
WLAN 802.11g (“N” & “E” countries only)  
WLAN 802.11b (Compact Flash) “N” countries  
WLAN 802.11b1 (Compact Flash) “E” countries  
MEDIA HANDLING  
_ _ _ - _ _ _ A _ 0 _ _ - _ _  
_ _ _ - _ _ _ B _ 0 _ _ - _ _  
_ _ _ - _ _ _ C _ 0 _ _ - _ _  
Direct Thermal/Linered Platen  
Direct Thermal/Linereless Platen  
Direct Thermal/Linered Platen/Label Present  
Sensor  
_ _ _ - _ _ _ D _ 0 _ _ - _ _  
Direct Thermal/Linereless Platen/Label  
Present Sensor  
COUNTRY CODE  
_ _ _ - _ _ _ _ 0 0 _ _ - _ _  
_ _ _ - _ _ _ _ L 0 _ _ - _ _  
_ _ _ - _ _ _ _ E 0 _ _ - _ _  
_ _ _ - _ _ _ _ A 0 _ _ - _ _  
_ _ _ - _ _ _ _ B 0 _ _ - _ _  
Group “O” (North America, Australia,NewZealand)  
Group “L” (Brazil, Argentina)  
Group “E” (EU/EFTA)  
Group “A” (Japan, Taiwan, Korea)  
Group “B” (China, Singapore, Thailand,  
Phillipines)  
HARDWARE OPTIONS  
_ _ _ - _ _ _ _ _ 0 0 _ - _ _  
_ _ _ - _ _ _ _ _ 0 1 _ - _ _  
_ _ _ - _ _ _ _ _ 0 2 _ - _ _  
_ _ _ - _ _ _ _ _ 0 3 _ - _ _  
_ _ _ - _ _ _ _ _ 0 4 _ - _ _  
Belt Clip (Standard)  
Shoulder Strap  
Hand Strap  
Stand  
No Options/No Belt Clip  
OTHER OPTIONS  
_ _ _ - _ _ _ _ _ 0 _ 0 - _ _  
_ _ _ - _ _ _ _ _ 0 _ 1 - _ _  
None  
Media Width Sensing  
CUSTOMER SPECIFIC OPTIONS  
Refer to Specific PCC level BOM  
_ _ _ - _ _ _ _ _ 0 _ _ - 0 0  
PCC Notes  
Each QL 220 Mobile Printer has a Product Configuration Code (PCC) label on the  
bottom of the unit. Use this chart to determine the features installed on your  
printer, then use the Illustrated Parts List on the following pages to determine  
which replacement kits must be ordered.  
RMAN-QLS-002 rev. A Replacement Kits  
• 3-114 •  
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Repair kits identified for use with QL 220 Plus models are not interchangeable  
with similar QL 220 kits. Kits identified for use with QL 220 models are not  
interchangeable with similar QL 220 Plus kits. Repair kits not specifically identified  
for use with either QL 220 or QL 220 Plus can be used on both models.  
PCC example:  
PCC number Q2D-LUBA0010-00 results in a QL 220 Plus with the following:  
• CPU Board with 8M each of SRAM and Flash Memory;  
• LCD display;  
• US/Candian English/Latin 1 & 5 fonts;  
• Bluetooth™wireless module;  
• Standard (linered media) platen;  
• Certified for use in North America, Australia and New Zealand.  
• Shoulder Strap.  
• Belt Clip  
No media width sensing  
Accessory Parts (not illustrated)  
PART NUMBER  
AN11209-1  
BT11132-1  
BT16899-1  
BT14029-3  
AT17696-1  
AT17696-2  
AT17696-3  
AT17696-4  
AT16305-4  
AC18177-1  
AC18177-2  
AC18177-3  
AC18177-7  
CC16614-G1  
CC16614-G2  
CC16614-G3  
CC16614-G4  
DA16803-1  
AN16753-029  
DESCRIPTION  
KIT COMPL CLEANING PENS 12-PK  
SHOULDER STRAP  
QTY  
1
1
STRAP HAND CARRY 8.0 W/ SNAPS  
STRAP CARRYING 8.0 (NO RINGS)  
FAST CHARGER, U.S. AND JAPAN  
FAST CHARGER, UK  
1
1
1
1
FAST CHARGER, EUROPE  
1
FAST CHARGER, AUSTRALIA  
QUAD CHARGER LI-ION (US)  
QUAD CHARGER LI-ION QL3/4 UK  
QUAD CHARGER LI-ION QL3/4 EURO  
QUAD CHARGER LI-ION QL3/4 AUST  
QUAD CHARGER LI-ION Q3/4 JAPAN  
12VDC MOBILE MOUNT DC/DC LI ION  
9VDC-30VDC MOBILE MOUNT DC/DC LI ION  
30VDC-60VDC MOBILE MOUNT DC/DC LI ION  
ASSY RCLI CHARGER 100-240VAC  
SOFT CASE  
1
1
1
1
1
1
1
1
1
1
1
TEST SWATCH KIT  
1
• 3-115 •  
RMAN-QLS-002 rev. A Replacement Kits  
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QL 220 & 220 PLuS rePLacement KitS  
IteM  
PARt #  
DeSCRIPtIoN  
1
AN16972-001  
AN16972-002  
AN16972-004  
AN16972-005  
AN16972-006  
RK18467-001  
RK18467-002  
AN16972-023  
AN16972-007  
AN16972-008  
AN16972-009  
RK18236-1  
PRINteR FRAMe KIt  
2
3
4
5
6
BI-PoLAR MotoR KIt  
LatcH aSSY Kit  
MeDIA DISK SuPPoRt KIt  
PeeLeR SHAFt/RoLLeR KIt  
Kit RpR QL2 Media guide W/BeLt  
Kit QL2 Media guide LineRLeSS W/BeLt  
Kit RepaiR QL2 Media guide aSSY W/Media WidtH SenSoR  
Kit RepaiR QL2 Media guide pLate  
pLaten/geaR LineRed Kit  
7
8
9
pLaten/geaR LineRLeSS Kit  
Kit RepaiR QL2 Media coveR aSSY (QL 220)  
Kit RepaiR QL2+ Media coveR aSSY  
KeYpad diSpLaY Kit  
RK17735-015  
AN16972-011  
RK17735-031  
AN16972-012  
AN16972-013  
RK18259-1  
10  
11  
12  
13  
Kit RepaiR Q2 coSt Reduced Lcd KeYpad  
MeMBRane KeYpad Kit  
KIt RePAIR QL2 MLB 1M (QL 220)  
KIt RePAIR QL2 MLB 2M (QL 220)  
RK17735-017  
RK17735-029  
AN16744-1  
KIt RePAIR QL2+ MLB 8M/4M (QL 220 PLuS)  
KIt RePAIR QL2 CoSt ReDuCeD MLB 16M/8MB  
KIt QL KICKStAND/BeLt CLIP  
14  
15  
RK18237-1  
aSSY ModuLe BLuetootH QL 220 1.2 (B/c)  
KIt RePAIR QL2+ BLtH MDL 1.2 (B/C)  
KIt RePAIR QL2+ BLtH MDL 2.0 (D)  
aSSY Mod QL 220 802.11B “n” (eu countRieS)  
aSSY Mod QL 220 802.11B “M” (noRtH aMeRica onLY)  
KIt RePAIR 802.11B QL 220 PLuS“N” (eu CouNtRIeS)  
Kit RepaiR 802.11B “M”ModuLe QL 220 pLuS (n.a. onLY)  
KIt RePAIR QL 220 PLuS 802.11B “F” MoDuLe  
Kit RepaiR QL 220 pLuS 802.11g “K” ModuLe  
KIt RePAIR QL2+ IRDA MDL  
RK17735-021  
RK18879-001  
RK18238-1  
RK18239-1  
RK17735-022  
RK17735-023  
RK17735-024  
RK17735-026  
RK17735-025  
AN16972-019  
RK17735-027  
RK18278-1  
Kit RepaiR QL2 uppeR HouSing (QL 220)  
Kit RepaiR QL2+ uppeR HouSing (QL 220 pLuS)  
Kit RepaiR QL2 pRintHead aSSY (QL 220)  
Kit RepaiR pRintHead aSSY, QL 220 pLuS  
KIt RePAIR QL CoRNeR AttACH  
16  
RK17735-016  
AN16753-010  
AN16972-022  
AN16972-021  
At16004-1  
17  
18  
19  
20  
KicKStand, QtY of 10  
dooR connectoR Kit, QtY of 15  
BatteRY pacK LitHiuM ion QL2/3  
BeLt cLip, QtY of 20 QL SeRieS  
AN16861-005  
continued  
RMAN-QLS-002 rev. A Replacement Kits  
• 3-116 •  
Download from Www.Somanuals.com. All Manuals Search And Download.  
QL 220 & 220 PLuS rePLacement KitS  
IteM  
PARt #  
DeSCRIPtIoN  
AN16861-006  
AN16793-030  
AN17006-035  
AN17006-037  
AN16972-003  
AN16861-031  
AN16861-032  
AN16861-033  
RK18482-1  
Hand StRap, QtY of 25 QL SeRieS  
SeLf tap ScReW, QtY of 20  
caRRYing StRap, QtY of 25  
Head SocKet ScReW, QtY of 100  
SocKet Head ScReW, QtY of 100  
Media diSK SuppoRt, QtY of 20  
fLat WaSHeR, QtY of 100  
SeLf tap ScReW, QtY of 20  
Kit RepaiR pLaten geaR 64p 24t  
Note: Shaded items are not illustrated.  
• 3-117 •  
RMAN-QLS-002 rev. A Replacement Kits  
Download from Www.Somanuals.com. All Manuals Search And Download.  
QL 220 & 220 PLuS PartS  
Printer meCHaniSm exPloded View  
1
4
6
1
2
RMAN-QLS-002 rev. A Replacement Kits  
• 3-118 •  
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QL 220 & 220 PLuS PartS- unit exPLoded view  
• 3-119 •  
RMAN-QLS-002 rev. A Replacement Kits  
Download from Www.Somanuals.com. All Manuals Search And Download.  
QL 320 & 320 PLuS Product configuration code  
(PCC)  
Q 3 _ - _ _ _ _ _ 0 _ _ - _ _  
QL 320/320 Plus Printer  
SRAM/FLASH  
_ _ A - _ _ _ _ _ 0 _ _ - _ _  
_ _ B - _ _ _ _ _ 0 _ _ - _ _  
_ _ C - _ _ _ _ _ 0 _ _ - _ _  
_ _ D - _ _ _ _ _ 0 _ _ - _ _  
1M/1M  
2M/2M  
8M/4M (QL 320 Plus)  
16M/8M (QL 320 Plus)  
KEYPAD/DISPLAY  
_ _ _ - L _ _ _ _ 0 _ _ - _ _  
_ _ _ - M _ _ _ _ 0 _ _ - _ _  
LCD  
Membrane  
CHARACTER SET  
_ _ _ - _ U _ _ _ 0 _ _ - _ _  
US/Candian English/Latin 1 & 5  
(Including Turkish)  
Chinese 16 x 16  
Japanese 16 x 16  
Japanese 24 x 24  
_ _ _ - _ D _ _ _ 0 _ _ - _ _  
_ _ _ - _ F _ _ _ 0 _ _ - _ _  
_ _ _ - _ G _ _ _ 0 _ _ - _ _  
_ _ _ - _ H _ _ _ 0 _ _ - _ _  
_ _ _ - _ I _ _ _ 0 _ _ - _ _  
Chinese 16 x 16 (simplified)  
Chinese 24 x 24 (simplified)  
COMMUNICATION-WIRELESS/SRRF  
None(cable communications only)  
IrDA  
_ _ _ - _ _ 1 _ _ 0 _ _ - _ _  
_ _ _ - _ _ 2 _ _ 0 _ _ - _ _  
_ _ _ - _ _ 3 _ _ 0 _ _ - _ _  
_ _ _ - _ _ 4 _ _ 0 _ _ - _ _  
_ _ _ - _ _ B _ _ 0 _ _ - _ _  
_ _ _ - _ _ C _ _ 0 _ _ - _ _  
_ _ _ - _ _ D _ _ 0 _ _ - _ _  
_ _ _ - _ _ E _ _ 0 _ _ - _ _  
_ _ _ - _ _ F _ _ 0 _ _ - _ _  
_ _ _ - _ _ M _ _ 0 _ _ - _ _  
_ _ _ - _ _ N _ _ 0 _ _ - _ _  
916 MHz SRRF1  
2.4 GHz SRRF1  
Bluetooth™  
WLAN 802.11b (Cisco PCMCIA) Domestic  
WLAN 802.11b (Cisco PCMCIA) Worldwide2  
WLAN 802.11b (Symbol FHSS)1  
WLAN 802.11b (Zebra Value Radio)  
WLAN 802.11b (Compact Flash) Domestic  
WLAN 802.11b (Compact Flash) Worldwide2  
MEDIA HANDLING  
_ _ _ - _ _ _ A _ 0 _ _ - _ _  
_ _ _ - _ _ _ B _ 0 _ _ - _ _  
_ _ _ - _ _ _ C _ 0 _ _ - _ _  
Direct Thermal/Linered Platen  
Direct Thermal/Linereless Platen  
Direct Thermal/Linered Platen/Label Present  
Sensor  
_ _ _ - _ _ _ D _ 0 _ _ - _ _  
Direct Thermal/Linereless Platen/Label  
Present Sensor  
COUNTRY CODE  
_ _ _ - _ _ _ _ 0 0 _ _ - _ _  
_ _ _ - _ _ _ _ L 0 _ _ - _ _  
_ _ _ - _ _ _ _ E 0 _ _ - _ _  
_ _ _ - _ _ _ _ A 0 _ _ - _ _  
_ _ _ - _ _ _ _ B 0 _ _ - _ _  
Group “O” (North America, Australia,NewZealand)  
Group “L” (Brazil, Argentina)  
Group “E” (EU/EFTA)  
Group “A” (Japan, Taiwan, Korea)  
Group “B” (China, Singapore, Thailand,  
Phillipines)  
HARDWARE OPTIONS  
_ _ _ - _ _ _ _ _ 0 0 _ - _ _  
_ _ _ - _ _ _ _ _ 0 1 _ - _ _  
_ _ _ - _ _ _ _ _ 0 2 _ - _ _  
_ _ _ - _ _ _ _ _ 0 3 _ - _ _  
_ _ _ - _ _ _ _ _ 0 4 _ - _ _  
Belt Clip (Standard)  
Shoulder Strap  
Hand Strap  
Stand  
No Options/No Belt Clip  
OTHER OPTIONS  
_ _ _ - _ _ _ _ _ 0 _ 0 - _ _  
_ _ _ - _ _ _ _ _ 0 _ 1 - _ _  
None  
Media Width Sensing  
CUSTOMER SPECIFIC OPTIONS  
Refer to Specific PCC level BOM  
_ _ _ - _ _ _ _ _ 0 _ _ - 0 0  
PCC Notes • 1. “3” & “4” wireless options are not available for any configurations created after  
10/02. The “E” wireless option is not available for any QL 320 configurations created after 10/05 and not  
available for any QL 320 Plus configurations. Spares support for older configurations will be continued.  
RMAN-QLS-002 rev. A Replacement Kits  
• 3-120 •  
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2. Worldwide WLAN option reqires a special .cfg file to be loaded in memory for compliance with  
international regulations.  
Interpreting the PCC Code  
Each QL 320 Mobile Printer has a Product Configuration Code (PCC) label on  
the bottom of the unit. Use this chart to determine the features installed on  
your printer, then use the Illustrated Parts List and cross reference tables on the  
following pages to determine which replacement kits must be ordered.  
Repair kits identified for use with QL 320 Plus models are not interchangeable  
with similar QL 320 kits. Kits identified for use with QL 320 models are not  
interchangeable with similar QL 320 Plus kits. Repair kits not specifically identified  
for use with either QL 320 or QL 320 Plus can be used on both models.  
PCC example:  
PCC number Q3D-LUBA0010-00 results in a QL 320 Plus with the following:  
• CPU Board with 8M each of SRAM and Flash Memory;  
• LCD display;  
• US/Candian English/Latin 1 & 5 fonts;  
• Bluetooth™SRRF QuickLink module;  
• Standard (linered media) platen;  
• Certified for use in North America, Australia and New Zealand  
• Shoulder Strap.  
Accessory Parts (not illustrated)  
PART NUMBER  
AN11209-1  
BT11132-1  
BT16899-1  
BT14029-3  
AT17696-1  
AT17696-2  
AT17696-3  
AT17696-4  
AT16305-4  
AC18177-1  
AC18177-2  
AC18177-3  
AC18177-7  
CC16614-G1  
CC16614-G2  
CC16614-G3  
CC16614-G4  
DA16307-1  
AN16753-029  
DESCRIPTION  
KIT COMPL CLEANING PENS 12-PK  
SHOULDER STRAP  
QTY  
1
1
STRAP HAND CARRY 8.0 W/ SNAPS  
STRAP CARRYING 8.0 (NO RINGS)  
FAST CHARGER, U.S. AND JAPAN  
FAST CHARGER, UK  
1
1
1
1
FAST CHARGER, EUROPE  
1
FAST CHARGER, AUSTRALIA  
QUAD CHARGER LI-ION (US)  
QUAD CHARGER LI-ION QL3/4 UK  
QUAD CHARGER LI-ION QL3/4 EURO  
QUAD CHARGER LI-ION QL3/4 AUST  
QUAD CHARGER LI-ION Q3/4 JAPAN  
12VDC MOBILE MOUNT DC/DC LI ION  
9VDC-30VDC MOBILE MOUNT DC/DC LI ION  
30VDC-60VDC MOBILE MOUNT DC/DC LI ION  
ASSY RCLI CHARGER 100-240VAC  
SOFT CASE  
1
1
1
1
1
1
1
1
1
1
1
TEST SWATCH KIT  
1
• 3-121 •  
RMAN-QLS-002 rev. A Replacement Kits  
Download from Www.Somanuals.com. All Manuals Search And Download.  
QL 320 & 320 PLuS rePLacement KitS  
IteM  
PARt #  
DeSCRIPtIoN  
1
RK18465-004  
RK18465-005  
AN16861-009  
RK17735-018  
RK18229-1  
Kit RpR QL3+ HSg WiReLeSS MdL  
Kit RpR QL3+ 802.11g “K”  
aSSY ModuLe iRda QL3/4 (QL 320)  
KIt RePAIR IRDA MoDuLe QL3/4 PLuS  
aSSY ModuLe BLuetootH Radio QL3/4 (QL 320) 1.2 (B/c)  
KIt RePAIR BLuetootH MoDuLe QL 320 PLuS 1.2 (B/C)  
KIt RePAIR BLuetootH MoDuLe QL 320 PLuS 2.0 (D)  
KIt RPR QL3/4 802.11B(CF) “N” (eu CouNtRIeS)  
KIt RePAIR QL3 916MHZ SRRF (QL 320)  
Kit RepaiR QL3 2.4gHZ SRRf (QL 320)  
RK17735-005  
RK18879-002  
RK18230-1  
AN16861-007  
AN16861-008  
AK18182-1  
aSSY Mod QL3/4 802.11B “M” (n. aMeRica) QL 320  
KIt RePAIR MoD CF 802.11B “N” (eu CouNtRIeS) QL3/4 PLuS  
KIt RePAIR MoD CF 802.11B “M” (N. AMeRICA) QL3/4 PLuS  
KIt RePAIR MoD CF 802.11B QL3/4 PLuS (DPAC)  
Kit RepaiR QL3 uppeR HouSing (QL 320)  
2.4gHZ WLan antenna Kit  
RK17735-006  
RK17735-007  
RK17735-008  
RK18233-1  
2
3
4
5
6
7
8
AN16861-011  
AN16652-1  
aSSY pcMcia 802.11B QL3/4 (QL 320)  
AN16861-013  
AN16861-014  
AN16861-015  
AN16861-018  
RK18234-1  
pLaten/geaR aSSY Kit (foR unitS BuiLt afteR 1/20/03)  
pLaten/geaR aSSY Kit, LineRLeSS (foR unitS BuiLt afteR 1/20/03)  
KIt RePAIR QL3 LBL PReS SNSR (QL 320)  
KIt RePAIR QL3 MLB 1M (QL 320)  
KIt RePAIR QL3 MLB 2M (FoR QL 320 BuILt AFteR 1/20/03)  
KIt RPR QL3+ MLB 8M/4M  
RK18465-002  
RK18465-006  
RK18235-1  
KIt RPR QL3 CoSt ReDuCeD MLB 16M/8MB  
Kit RepaiR QL 3/4 Lcd KeYpad Kit, QL 320/420  
Kit RepaiR QL 3/4 coSt Reduced Lcd KeYpad  
KeYpad Kit, QL 320/420  
Media coveR aSSY Kit (foR QL 320 BuiLt pRioR to 1/20/03)1  
Media coveR aSSY Kit (foR QL 320 BuiLt afteR 1/20/03)  
KIt RePAIR QL3+ MeDIA CoVeR  
9
RK17735-032  
AN16861-021  
AN16861-023  
AN16861-024  
RK18465-001  
AN16861-025  
AN16861-026  
RK18277-1  
10  
11  
12  
13  
LatcH aSSY Kit  
PeeLeR SHAFt/RoLLeR KIt  
Kit RepaiR QL3 pRintHead aSSY  
RK18465-003  
AN16861-029  
AN16861-030  
AN 16753-026  
RK18251-1  
KIt RPR QL3+ PRINtHeAD W/SeNSoR  
14  
15  
PRINteR FRAMe KIt (uNItS BuILt AFteR 10/2002)  
MeDIA DISK SuPPoRt KIt  
MeDIA DISK SuPPoRt LINeRLeSS KIt  
16  
17  
BI-PoLAR MotoR KIt  
AN16744-1  
KIt QL KICKStAND/BeLt CLIP  
RMAN-QLS-002 rev. A Replacement Kits  
• 3-122 •  
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QL 320 & 320 PLuS rePLacement KitS  
IteM  
18  
19  
PARt #  
DeSCRIPtIoN  
At16004-1  
BatteRY pacK LitHiuM ion QL2/3  
Kit RpR QL 320 Media guide/MW  
Kit RpR QL3 Media guide W/BeLt  
Kit QL3 Media guide LnL W/BeLt  
Kit QL3 Media guide MW W/BeLt  
Kit QL3 Media guide LnL MW BeLt  
KIt RePAIR QL CoRNeR AttACH  
SocKet Head ScReW, QtY of 100  
SeLf tap ScReW, QtY of 20  
RK16823-043  
RK18460-1  
RK18461-1  
RK18462-1  
RK18463-1  
AN16753-010  
AN16972-003  
AN16793-030  
AN16861-004  
AN16972-022  
AN16861-005  
AN16861-006  
AN16861-031  
AN16861-032  
AN16861-033  
AN17006-035  
AN17006-037  
AN17006-038  
RK18482-1  
nYLon WaSHeR, QtY of 100  
KicKStand, QtY of 10  
BeLt cLip, QtY of 20 QL SeRieS  
Hand StRap, QtY of 25 QL SeRieS  
Media diSK SuppoRt, QtY of 20  
fLat WaSHeR, QtY of 100  
SeLf tap ScReW, QtY of 20  
caRRYing StRap, QtY of 25  
SocKet Head ScReW, QtY of 100  
SocKet Head ScReW, QtY of 20  
Kit RepaiR pLaten geaR 64p 24t  
Note: Shaded items are not illustrated.  
• 3-123 •  
RMAN-QLS-002 rev. A Replacement Kits  
Download from Www.Somanuals.com. All Manuals Search And Download.  
QL 320 & 320 PLuS rePLacement KitS  
unit exPloded View  
RMAN-QLS-002 rev. A Replacement Kits  
• 3-124 •  
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QL 320 & 320 PLuS rePLacement KitS  
PCmCia radio oPtionS  
4
3
(REF.)  
8
QL 320 & 320 PLuS rePLacement KitS  
Printer meCHaniSm  
REF.  
16  
14  
• 3-125 •  
RMAN-QLS-002 rev. A Replacement Kits  
Download from Www.Somanuals.com. All Manuals Search And Download.  
QL 420 & 420 PLuS Product configuration code  
(PCC)  
Q 4 _ - _ _ _ _ _ 0 _ _ - _ _  
QL 420/ 420 Plus Printer  
SRAM/FLASH  
_ _ A - _ _ _ _ _ 0 _ _ - _ _  
_ _ B - _ _ _ _ _ 0 _ _ - _ _  
_ _ C - _ _ _ _ _ 0 _ _ - _ _  
_ _ D - _ _ _ _ _ 0 _ _ - _ _  
1M/1M  
2M/2M  
8M/4M (QL 420 Plus)  
16M/8M (QL 420 Plus)  
KEYPAD/DISPLAY  
_ _ _ - L _ _ _ _ 0 _ _ - _ _  
_ _ _ - M _ _ _ _ 0 _ _ - _ _  
LCD  
Membrane  
CHARACTER SET  
_ _ _ - _ U _ _ _ 0 _ _ - _ _  
US/Canadian English/Latin 1 & 5  
(Including Turkish)  
_ _ _ - _ D _ _ _ 0 _ _ - _ _  
_ _ _ - _ F _ _ _ 0 _ _ - _ _  
_ _ _ - _ G _ _ _ 0 _ _ - _ _  
_ _ _ - _ H _ _ _ 0 _ _ - _ _  
_ _ _ - _ I _ _ _ 0 _ _ - _ _  
_ _ _ - _ j _ _ _ 0 _ _ - _ _  
Chinese 16 x 16  
Japanese 16 x 16  
Japanese 24 x 24  
Chinese 16 x 16 (simplified)  
Chinese 24 x 24 (simplified)  
Korean (Mincho)  
COMMUNICATION-WIRELESS/SRRF  
None (communications via cable only)  
IrDA  
_ _ _ - _ _ 1 _ _ 0 _ _ - _ _  
_ _ _ - _ _ 2 _ _ 0 _ _ - _ _  
_ _ _ - _ _ B _ _ 0 _ _ - _ _  
_ _ _ - _ _ C _ _ 0 _ _ - _ _  
_ _ _ - _ _ D _ _ 0 _ _ - _ _  
_ _ _ - _ _ F _ _ 0 _ _ - _ _  
_ _ _ - _ _ H _ _ 0 _ _ - _ _  
_ _ _ - _ _ M _ _ 0 _ _ - _ _  
_ _ _ - _ _ N _ _ 0 _ _ - _ _  
Bluetooth™  
WLAN 802.11b (Cisco PCMCIA) Domestic  
WLAN 802.11b (Cisco PCMCIA) Worldwide1  
WLAN 802.11b (Zebra Value Radio)  
WLAN 802.11b/Bluetooth (Combo)  
WLAN 802.11b (Compact Flash) Domestic)  
WLAN 802.11b (Compact Flash) Worldwide2  
MEDIA HANDLING  
_ _ _ - _ _ _ A _ 0 _ _ - _ _  
_ _ _ - _ _ _ B _ 0 _ _ - _ _  
_ _ _ - _ _ _ C _ 0 _ _ - _ _  
Direct Thermal/Linered Platen  
Direct Thermal/Linereless Platen  
Direct Thermal/Linered Platen/Label  
Present Sensor  
_ _ _ - _ _ _ D _ 0 _ _ - _ _  
Direct Thermal/Linereless Platen/Label  
Present Sensor  
COUNTRY CODE  
_ _ _ - _ _ _ _ 0 0 _ _ - _ _  
_ _ _ - _ _ _ _ L 0 _ _ - _ _  
_ _ _ - _ _ _ _ E 0 _ _ - _ _  
_ _ _ - _ _ _ _ A 0 _ _ - _ _  
_ _ _ - _ _ _ _ B 0 _ _ - _ _  
Group “O” (North America, Australia,NewZealand)  
Group “L” (Brazil, Argentina)  
Group “E” (EU/EFTA)  
Group “A” (Japan, Taiwan, Korea)  
Group “B” (China, Singapore, Thailand,  
Phillipines)  
HARDWARE OPTIONS  
_ _ _ - _ _ _ _ _ 0 0 _ - _ _  
_ _ _ - _ _ _ _ _ 0 1 _ - _ _  
_ _ _ - _ _ _ _ _ 0 2 _ - _ _  
_ _ _ - _ _ _ _ _ 0 3 _ - _ _  
_ _ _ - _ _ _ _ _ 0 4 _ - _ _  
Belt Clip (Standard)  
Shoulder Strap  
Hand Strap  
Stand  
No Options/No Belt Clip  
OTHER OPTIONS  
_ _ _ - _ _ _ _ _ 0 _ 0 - _ _  
_ _ _ - _ _ _ _ _ 0 _ 1 - _ _  
None  
Media Width Sensing  
CUSTOMER SPECIFIC OPTIONS  
Refer to Specific PCC level BOM  
_ _ _ - _ _ _ _ _ 0 _ _ - 0 0  
PCC Notes • 1. The “E” wireless option is not available for any QL 420 configurations created after  
10/05 and not available for any QL 420 Plus configurations. Spares support for older configurations will be  
continued.  
2. Worldwide WLAN option reqires a special .cfg file to be loaded in memory for compliance with  
international regulations.  
RMAN-QLS-002 rev. A Replacement Kits  
• 3-126 •  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Interpreting the PCC Code  
Each QL 420 Mobile Printer has a Product Configuration Code (PCC) label on  
the bottom of the unit. Use this chart to determine the features installed on  
your printer, then use the Illustrated Parts List and cross reference tables on the  
following pages to determine which replacement kits must be ordered.  
Repair kits identified for use with QL 420 Plus models are not interchangeable  
with similar QL 420 kits. Kits identified for use with QL 420 models are not  
interchangeable with similar QL 420 Plus kits. Repair kits not specifically identified  
for use with either QL 420 or QL 420 Plus can be used on both models.  
PCC example:  
PCC number Q4D-LUBA0010-00 results in a QL 420 Plus with the following:  
• CPU Board with 8M each of SRAM and Flash Memory;  
• LCD display;  
• US/Canadian English/Latin 1 & 5 fonts;  
• Bluetooth™ SRRF QuickLink module;  
• Standard (linered media) platen;  
• Certified for use in North America, Australia and New Zealand  
• Shoulder Strap.  
• No Media Width Sensing option  
Parts Not Illustrated  
PART NUMBER  
AN11209-1  
BT11132-1  
BT16899-1  
BT14029-3  
AT17696-1  
AT17696-2  
AT17696-3  
AT17696-4  
AT16305-4  
AC18177-1  
AC18177-2  
AC18177-3  
AC18177-7  
CC16614-G1  
CC16614-G2  
CC16614-G3  
CC16614-G4  
DA16473-2  
AN16753-029  
DESCRIPTION  
KIT COMPL CLEANING PENS 12-PK  
SHOULDER STRAP  
QTY  
1
1
STRAP HAND CARRY 8.0 W/ SNAPS  
STRAP CARRYING 8.0 (NO RINGS)  
FAST CHARGER, U.S. AND JAPAN  
FAST CHARGER, UK  
1
1
1
1
FAST CHARGER, EUROPE  
1
FAST CHARGER, AUSTRALIA  
QUAD CHARGER LI-ION (US)  
QUAD CHARGER LI-ION QL3/4 UK  
QUAD CHARGER LI-ION QL3/4 EURO  
QUAD CHARGER LI-ION QL3/4 AUST  
QUAD CHARGER LI-ION Q3/4 JAPAN  
12VDC MOBILE MOUNT DC/DC LI ION  
9VDC-30VDC MOBILE MOUNT DC/DC LI ION  
30VDC-60VDC MOBILE MOUNT DC/DC LI ION  
ASSY RCLI CHARGER 100-240VAC  
SOFT CASE  
1
1
1
1
1
1
1
1
1
1
1
TEST SWATCH KIT  
1
• 3-127 •  
RMAN-QLS-002 rev. A Replacement Kits  
Download from Www.Somanuals.com. All Manuals Search And Download.  
QL 420 & 420 PLuS rePLacement KitS  
IteM  
PARt #  
DeSCRIPtIoN  
1
RK18229-1  
aSSY ModuLe BLtH Radio QL3/4 (QL 420) 1.2 (B/c)  
KIt RePAIR MoDuLe BLuetootH QL 3/4 PLuS 1.2 (B/C)  
KIt RePAIR MoDuLe BLuetootH QL 3/4 PLuS 2.0 (D)  
aSSY Mod cf 802.11B endcap ant “n” (eu countRieS) (QL 420)  
KIt RePAIR MoDuLe CF 802.11B “N” (eu CouNtRIeS) QL3/4 PLuS  
KIt RePAIR MoDuLe CF 802.11B “M” (N. AMeRICA)QL3/4 PLuS (M)  
aSSY Mod QL 3/4 802.11B “M” (n. aMeRica) QL 420  
KIt RePAIR MoDuLe CF 802.11B QL 3/4PLuS(DPAC)  
aSSY ModuLe iRda QL3/4 (QL 420)  
RK17735-005  
RK18879-002  
RK18230-1  
RK17735-006  
RK17735-007  
AK18182-1  
RK17735-008  
AN16861-009  
RK17735-018  
AN16753-008  
RK17735-019  
RK17735-020  
RK18251-1  
KIt RePAIR IRDA MoDuLe QL 3/4 PLuS  
Kit RpR QL4 HSg WiReLeSS MdL (QL 420)  
KIt RePAIR MoDuLe CoVeR QL 420 PLuS  
Kit RepaiR ModuLe cf 802.11g QL 420 pLuS  
MotoR  
2
3
4
5
6
AN16753-007  
AN16753-011  
AN16753-024  
RK18252-1  
uppeR HouSing (W/ BoaRd coveR)  
LatcH aSSeMBLY  
PeeLeR SHAFt/RoLLeR KIt  
KIt RePAIR QL4 PRINtHD/SeNSoR  
RK17735-004  
RK18466-001  
RK18466-002  
RK18466-003  
RK18466-004  
AN16753-001  
AN16753-002  
AN16753-026  
AN16753-021  
AN16753-022  
AN16753-003  
AN16753-004  
RK18231-1  
Kit RepaiR pRintHead aSSeMBLY QL 420 pLuS  
Kit RepaiR QL4 Media guide W/BeLt  
Kit RepaiR QL4 Media guide LineRLeSS W/BeLt  
Kit RepaiR QL4 Media guide Media WidtH W/BeLt  
Kit RepaiR QL4 Media guide Media WidtH LineRLeSS W/BeLt  
Kit RepaiR QL4 Media aSSY  
7
8
9
DISK, MeDIA SuPPoRt (Set oF 5)  
LINeRLeSS DISK, MeDIA SuPPoRt (Set oF 5)  
KIt RePAIR QL4 PLAteN/RLR LNRD  
KIt RPR QL4 PLAteN/RoLLeR LNLS  
10  
11  
Media guide RoLLeR, LineRed  
Media guide RoLLeR, LineRLeSS  
KIt RePAIR QL4 MeDIA CoVeR  
RK17735-001  
AN16753-012  
At16293-1  
Kit RepaiR Media coveR aSSeMBLY QL 420 pLuS  
pRint fRaMe aSSeMBLY  
12  
13  
14  
15  
16  
BatteRY pacK LitHiuM-ion QL 420 (aLL ModeLS)  
DooR CoNNeCtoR  
AN16753-020  
AN16744-1  
KIt QL KICKStAND/BeLt CLIP  
AN16753-016  
RK17735-002  
RK17735-029  
RK18228-1  
KIt RePAIR QL4 MLB 1M/1M (QL 420)  
KIt RePAIR MLB 8M/4M QL 420 PLuS  
KIt RePAIR QL2 CoSt ReDuCeD MLB 16MB/8M  
KIt RePAIR QL4 MLB 2M/2M (QL 420)  
continued  
RMAN-QLS-002 rev. A Replacement Kits  
• 3-128 •  
Download from Www.Somanuals.com. All Manuals Search And Download.  
QL 420 & 420 PLuS rePLacement KitS  
IteM  
17  
PARt #  
DeSCRIPtIoN  
AN16753-010  
RK18235-1  
CoRNeR AttACHMeNt KIt QL4  
Kit RepaiR QL 3/4 Lcd KeYpad Kit, QL 320/420  
Kit RepaiR QL 3/4 coSt Reduced Lcd KeYpad  
KeYpad Kit, QL 320/420  
18  
RK17735-032  
AN16861-021  
AN16652-1  
19  
aSSY pcMcia 802.11B, QL3/4  
AN16861-004  
AN16861-031  
AN16861-032  
AN16861-033  
AN16972-022  
AN17006-037  
AN17006-038  
AN17006-044  
AN16793-030  
AN16861-005  
AN16861-006  
nYLon WaSHeR, QtY of 100  
Media diSK SuppoRt, QtY of 10  
fLat WaSHeR, QtY of 100  
SeLF tAP SCReW, M3X6, QtY of 20  
KicKStand, QtY of 10  
SocKet Head ScReW, 4-40 X 1/2, QtY of 100  
SocKet Head ScReW, 4-40 X 1/4, QtY of 20  
SpRing, .020 dia X .500 Lg, QtY of 10  
SeLf tap ScReW, M3X10, QtY of 20  
BeLt cLip, QtY of 20  
Hand StRap, QtY of 25  
Note: Shaded items are not illustrated.  
• 3-129 •  
RMAN-QLS-002 rev. A Replacement Kits  
Download from Www.Somanuals.com. All Manuals Search And Download.  
QL 420 & 420 PLuS rePLacement KitS  
unit exPloded View  
4
10  
5
1
3
2
6
7
8
9
11  
18  
15  
12  
17  
16  
14  
13  
RMAN-QLS-002 rev. A Replacement Kits  
• 3-130 •  
Download from Www.Somanuals.com. All Manuals Search And Download.  
QL 420 & 420 PLuS rePLacement KitS  
PCmCia oPtion  
19  
• 3-131 •  
RMAN-QLS-002 rev. A Replacement Kits  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Download from Www.Somanuals.com. All Manuals Search And Download.  

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