Oki Printer 4M User Manual
OKIPAGE 4 /4  
LED Page Printer  
Maintenance Manual  
OEL/INT  
Approval  
All specifications are subject to change without notice.  
40245101TH  
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PREFACE  
This Maintenance Manual describes the field maintenance methods for LED Page Printers.  
This manual is written for use by service persons. Please note that you should refer to the Printer  
Handbook for the handling and operating methods of the equipment.  
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CONTENTS  
1. CONFIGURATION ..................................................................................... 1 - 1  
1.1 System Configuration ........................................................................ 1 - 1  
1.2. Printer Configuration.......................................................................... 1 - 2  
1.3 Option................................................................................................. 1 - 3  
1.4 Specification ...................................................................................... 1 - 4  
1.5 Safety Standards ............................................................................... 1 - 6  
1.5.1  
Certification Label.................................................................................... 1 - 6  
1.5.2  
Warning Label ......................................................................................... 1 - 6  
2. OPERATION DESCRIPTION .................................................................... 2 - 1  
2.1 Main Control Board............................................................................ 2 - 4  
2.2 Power Supply Unit ............................................................................. 2 - 5  
2.3 High-Voltage Power Supply Board .................................................... 2 - 5  
2.4 Electro-Photographic Processor ........................................................ 2 - 7  
2.5 Electro-Photographic Process ........................................................... 2 - 11  
2.5.1  
Explanation of Each Process Operation.................................................. 2 - 13  
2.6 Paper Jam Detection ......................................................................... 2 - 19  
2.7 Toner Low Detection.......................................................................... 2 - 21  
2.8 Cover Open ....................................................................................... 2 - 22  
3. PARTS REPLACEMENT........................................................................... 3 - 1  
3.1 Precautions for Parts Replacement ................................................... 3 - 1  
3.2 Parts Layout....................................................................................... 3 - 3  
3.3 Replacing Parts ................................................................................. 3 - 6  
3.3.1  
3.3.2  
3.3.3  
3.3.4  
3.3.5  
3.3.6  
3.3.7  
3.3.8  
Hopper Plate ........................................................................................... 3 - 6  
LED Head and Head Spring .................................................................... 3 - 7  
Transfer Roller ......................................................................................... 3 - 8  
Upper Cover Assy ................................................................................... 3 - 9  
High-Voltage Power Supply Board .......................................................... 3 - 10  
Top Cover Assy and Flat Cable Assy...................................................... 3 - 11  
Paper Holder ........................................................................................... 3 - 12  
Side Plate M and Idle Gear ..................................................................... 3 - 13  
Heat Assy ................................................................................................ 3 - 14  
Drive Shaft E (Eject) and Eject Roller ..................................................... 3 - 17  
Pressure Roller B (Back Up Roller) ......................................................... 3 - 18  
Separator Guide ...................................................................................... 3 - 19  
Pulse Motor (Main) .................................................................................. 3 - 21  
Hopping Shaft Assy ................................................................................. 3 - 22  
Resist Roller ............................................................................................ 3 - 23  
Paper Sensor E, Paper Sensor Exit and Toner Sensor Assy ................. 3 - 24  
Base Plate ............................................................................................... 3 - 25  
3.3.9  
3.3.10  
3.3.11  
3.3.12  
3.3.13  
3.3.14  
3.3.15  
3.3.16  
3.3.17  
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4. ADJUSTMENT........................................................................................... 4 - 1  
4.1 Adjustment Types and Functions ...................................................... 4 - 1  
4.1.1  
Printer Driver ........................................................................................... 4 - 1  
4.1.2  
Engine Maintenance Utility ...................................................................... 4 - 3  
4.2 Adjustment When Replacing a Part................................................... 4 - 3  
4.2.1  
4.2.2  
4.2.3  
Setting LED Head Drive Time ................................................................. 4 - 3  
Setting the LED Head Dot Count ............................................................ 4 - 4  
Uploading and Downloading EEPROM Data .......................................... 4 - 5  
5. PERIODICAL MAINTENANCE ................................................................. 5 - 1  
5.1 Periodical Replacement Parts ........................................................... 5 - 1  
5.2 Cleaning............................................................................................. 5 - 1  
5.2.1  
Cleaning of LED Lens Array .................................................................... 5 - 1  
6. TROUBLESHOOTING PROCEDURES .................................................... 6 - 1  
6.1 Troubleshooting Tips ......................................................................... 6 - 1  
6.2 Check Points Before Correcting Image Problems ............................. 6 - 1  
6.3 Notes When Correcting Image Problems .......................................... 6 - 1  
6.4 Preparation Before Troubleshooting.................................................. 6 - 1  
6.5 Troubleshooting ................................................................................. 6 - 2  
6.5.1  
6.5.2  
6.5.3  
Status Monitor Message List ................................................................... 6 - 2  
Status Message Troubleshooting ............................................................ 6 - 6  
Image Troubleshooting ............................................................................ 6 - 13  
7. WIRING DIAGRAM................................................................................... 7 - 1  
7.1 Interconnect Signal Diagram ............................................................. 7 - 1  
7.2 PCB Layout........................................................................................ 7 - 3  
7.2.1  
7.2.2  
7.2.3  
Main Control Board (HBMC-2 PCB)(OKIPAGE 4w plus) ........................ 7 - 3  
Main Control Board (HBMC-3 PCB)(OKIPAGE 4m) ............................... 7 - 4  
High-Voltage Power Sapply Board .......................................................... 7 - 5  
8. PARTS LIST .............................................................................................. 8 - 1  
APPENDIX A LOCAL PRINTING ............................................................... A - 1  
APPENDIX B PARALLEL INTERFACE ..................................................... B - 1  
APPENDIX C MACINTOSH INTERFACE................................................... C - 1  
APPENDIX D MAINTENANCE UTILITY ..................................................... D - 1  
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1. CONFIGURATION  
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1.  
CONFIGURATION  
1.1  
System Configuration  
The OKIPAGE 4w Plus/4m consists of a control block, a power supply unit, and an engine block.  
(See Figure 1-1.)  
ENGINE UNIT  
Paper Feed Mechanism  
Hopper  
Plate  
Electro-photographic  
Processor  
High-Voltage Power  
Supply Board  
Main Control Board  
Power Supply Unit  
*2MB Memory  
Expansion Board  
*: Option (OKIPAGE 4m Only)  
Figure 1-1  
1 - 1  
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1.2  
Printer Configuration  
The printer unit consists of the following five hardware components:  
• Electro-Photographic Processor  
• Paper Feeder  
• Main Control Board  
• High-Voltage Power Supply Board  
• Power Supply Unit  
Figure 1-2 is the configuration of the printer unit.  
Upper Cover Assy  
EP Unit  
Top Cover Assy  
Heat Assy  
Power Supply Unit  
Main Control Board  
High-Voltage Power  
Supply Board  
1 - 2  
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1.3  
Option  
(1) 2MB HBRB-PCB Option Memory Board(Only OKIpage 4m)  
1 - 3  
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1.4  
Specification  
(1) Type  
Desktop  
(2) Outside dimensions  
(excludes protruding  
portion)  
Height 5.9”  
Width 12.2”  
Depth 7.5”  
(150 mm)  
(310 mm)  
(191 mm)  
(3) Weight  
3.8 kg  
(4) Development method  
Exposure method  
Dry non-magnetic development system  
LED stationary head  
(5) Paper used  
<Type>  
• Standard paper  
– Xerox 4200 (20 lbs)  
• Application paper (manual face-up feed)  
– Label  
– Envelope  
– OHP paper (Transparency)  
<Size>  
14" (355.6 mm) (Max.) x 8.5" (215.9 mm)  
<Thickness>  
– Automatic feed:  
– Manual feed:  
16 to 28 lbs (60 to 90 g/m2)  
Label, Envelope, OHP paper (trans-  
parency)  
(6) Printing speed  
First print:  
Continuous print:  
Warm-up time:  
23 seconds (A4) (after warm-up)  
4 sheets/minute (A4)  
40 seconds (120 VAC for ODA, 230  
VAC for OEL/INT) (at room tempera-  
ture 77 ˚F (25 ˚C))  
(7) Paper feeding method  
(8) Paper delivery method  
(9) Resolution  
Automatic paper feed or manual paper feed  
Face down  
300 dpi x 300 dpi, 600 dpi x 600 dpi (quasi)  
(10) Power input  
230 VAC +15%, -14% (for OEL/INT)  
120 VAC +6%, -15% (for ODA)  
(11) Power consumption  
Peak:  
Typical operation:  
Idle:  
450W  
100W  
30W  
5W  
Power save mode:  
1 - 4  
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(12) Temperature and humidity  
Temperature  
Humidity  
During operation  
In storage  
10 to 32 ˚C  
20 to 80% RH (relative humidity)  
–10 to +43 ˚C  
10 to 90% RH (relative humidity)  
No condensation is permissible.  
Caution: Temperature and humidity in storage are measured with the OKIPAGE 4w plus/4m  
being packed; they are valid for one year.  
(13) Noise  
During operation:  
Standby:  
48 dB (A) or less  
38 dB (A) or less  
(14) Consumables  
Toner cartridge kit  
1,000 (5% duty)  
Image drum cartridge 10,000 (at continuouts printing)  
1 - 5  
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1.5  
Safety Standards  
1.5.1 Certification Label  
The safety certification label is affixed to the following location of the OKIPAGE 4w:  
OKI-INT  
4w Plus  
1.5.2 Warning Label  
Warning labels are affixed to the locations that may cause bodily injury.  
During maintenance, do work with enough care while following instructions on these warning  
labels.  
For OEL  
For OEL, OKI-INT  
For Korea  
For China, TAIWAN  
1 - 6  
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2. OPERATION DESCRIPTION  
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2.  
OPERATION DESCRIPTION  
The OKIPAGE 4w Plus/4m consists of a main control board, a high-voltage power supply board,  
apowersupplyunit,andanelectro-photographicprocessor. TheOKIPAGE 4wPlus/4mreceives  
print data from a higher-level interface and sequentially stores it in memory. The OKIPAGE 4w  
Plus/4m decodes and edits the received data while storing print data from the interface in  
memory. It sequentially transfers the edited data to the LED head for each dot line. The electro-  
photographic processor then prints the data on sheets of paper.  
The display of the higher-level host is used for device operation and status display.  
Figure 2-1 is the block diagram of the OKIPAGE 4w Plus/4m.  
2 - 1  
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2 - 2  
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Driver IC  
2 - 3  
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2.1  
Main Control Board  
The main control board consists of a one-chip CPU, a program ROM, a DRAM, an EEPROM, a  
host interface circuit, and a mechanism driving circuit. The mechanism driving circuit consists of  
a LED head, a main motor, and an electromagnetic clutch.  
(1) One-chip CPU  
The one-chip CPU is a custom CPU (8-bit internal bus, 8-bit external bus, 10-MHz clock)  
incorporating mask ROM and CPU peripheral devices. This CPU has the functions listed in  
the table below.  
Built-in Device  
DRAM controller  
Function  
Controls DRAM.  
DMA controller  
Transfers image data from Parallel I/F to DRAM, from DRAM to a video output port and  
between CPU and DRAM.  
Parallel interface controller  
Controls the parallel interface.  
Controls LED head.  
Video output port  
LED STB output port  
Generates various control timings for monitoring paper feeding and a paper size.  
Timer  
Inputs and outputs the sensor signals and motor signals, etc.  
Also performs I/O for EEPROM.  
I/O port  
Inputs the feedback signals from a high-voltage generation circuit and thermistor signal.  
A/D converter  
(2) Program ROM  
Program ROM contains a program for the equipment. EPROM is used as program ROM.  
When mask ROM in the one-chip CPU explained in (1) above is valid, the EPROM is not  
mounted. (For details on short wiring setting, see Section 7.2.)  
(3) DRAM  
DRAM is used as resident memory.  
(4) EEPROM  
EEPROM holds the following data:  
• Menu data  
• Counter value  
• Adjustment value  
(5) Parallel interface  
The parallel interface receives parallel data from the host; it conforms to the IEEE1284  
specification.  
(6) Macintosh interface <only OKIPAGE 4m>  
Mcintosh interfacce receives serial data from the host ; it conforms to the IEEE1284.  
2 - 4  
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2.2  
Power Supply Unit  
The power supply unit supplies +5 V and +24 V to the main control board according to 230 VAC  
/120 VAC.  
Output voltage  
+5 V  
Application  
Used to generate a logic circuit and a high voltage.  
Used to drive the motor and electromagnetic clutch.  
+24 V  
The power supply unit also contains a heater drive circuit.  
High-Voltage Power Supply Board  
2.3  
(1) High-Voltage power supply circuit  
The high-voltage power supply circuit generates the following voltages required for the  
electro-photographic processor from +5 V according to the control sequence from the main  
control board. When the cover is open, +5 V supply is automatically interrupted to stop high-  
voltage output.  
Output  
CH  
Voltage  
Application  
–1.35 KV  
Voltage to be applied to a charge roller.  
Voltage to be applied to a developing roller.  
Voltage to be applied to a sponge roller.  
Voltage to be applied to a cleaning roller.  
Voltage to be applied to a transfer roller.  
DB  
–300 V/+300 V  
–450 V/ 0 V  
SB  
CB  
+400 V  
TR  
+500 V ~ +3.5 KV/–750 V  
Caution: The TR voltage varies with medium and transfer roller impedance.  
2 - 5  
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(2) Sensors  
The high-voltage power supply board consists of the high-voltage power supply circuit that  
supplies power to the electro-photographic processor system and the photosensor that  
detects a paper feeding system and toners.  
Figure 2-2 shows the sensor layout drawing.  
Exit roller  
Outlet sensor  
Heat roller  
Transfer roller  
Feed roller  
Paper sensor  
Toner  
Hopping  
sensor  
roller  
assy  
Manual feed sensor  
Figure 2-2  
Sensor  
Function  
Sensing State  
Manual feed  
sensor  
Monitors whether paper was inserted into the manual feed sensor  
section.  
ON: Paper exists.  
OFF: No paper exists.  
Paper sensor  
Outlet sensor  
Toner sensor  
Detects the leading part of the paper.  
Monitors paper feeding.  
ON: Paper exists.  
OFF: No paper exists.  
Monitors paper feeding and the paper size according to the paper  
sensor arrival and passing time.  
ON: Paper exists.  
OFF: No paper exists.  
Detects the low toner status.  
ON (long): Toner low  
OFF (short): Toner High  
2 - 6  
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2.4  
Electro-Photographic Processor  
The electro-photographic processor prints out the image data to be sent from the main control  
board on sheets of paper. Figure 2-3 shows the layout drawing of the electro-photographic  
processor.  
(1) Image drum unit  
Theimagedrumunitmakesatoneradheretotheformedelectrostaticlatentimagewithstatic  
electricity. This electrostatic latent image is formed by the lights irradiated from LED heads.  
(2) Electromagnetic clutch  
The electromagnetic clutch controls the rotation of the hopping roller according to signals  
from the control block.  
2 - 7  
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2 - 8  
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(3) Pulse motor (Main)  
This pulse motor of 48 steps/rotation is two-phase excited by the signal from the main control  
board; it performs feeding control by switching normal rotation to reverse rotation or vice  
versa and turning on/off the electromagnetic clutch. The relationship between the main  
motor, electromagnetic clutch, resist gear, drum gear, hopping roller is shown in the table  
below and on the subsequent pages.  
Main Motor  
Electromagnetic Clutch  
Hopping Roller  
Non-rotation  
Rotation  
Regist Gear  
Non-rotation  
Rotation  
Drum Gear  
Rotation  
Rotation  
Rotation  
Operation  
Warm-up  
Hopping  
Prinitng  
Normal rotation  
OFF  
ON  
Reverse rotation  
OFF  
Non-rotation  
Rotation  
(4) LED head  
The shift and latch registers receive image data from the main control board for each dot line.  
2,560 or 2,496 LEDs are driven to radiate the image drum.  
(5) Heat Assy  
The heat Assy consists of a heater, a heat roller, a thermistor, and a thermostat.  
The power supply unit supplies AC voltage to the heater according to the HEATON signal  
from the main control board to heat the heat roller. The main control board monitors the heat  
roller temperature via the thermistor and keeps the temperature constant by turning on/off  
the heater AC voltage supply.  
If the heat roller temperature rises abnormally, the thermostat of the heater voltage supply  
circuit functions to forcibly suspend the AC voltage supply.  
2 - 9  
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2 - 10  
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2.5  
Electro-Photographic Process  
(1) Electro-photographic process  
The electro-photographic process is outlined below.  
1
Charging  
The surface of the OPC drum is charged negatively and uniformly by applying the DC  
voltage to the CH roller.  
2
Exposure  
Light emitted from the LED head irradiates the negatively charged surface of the OPC  
drum. The surface potential of the irradiated surface attenuates to form the electrostatic  
latent image corresponding to the image signal.  
3
Development and residual toner recovery  
The negatively charged toner is brought into contact with the OPC drum, adhering to the  
electrostatic latent image on the OPC drum by static electricity. This adhesion causes  
the electrostatic latent image to change to a visible image.  
At the same time, the residual toner on the OPC drum is attracted to the developing  
rollerby static electricity.  
4
Transfer  
When paper is placed over the image drum surface, the positive charge which is  
oppositeinpolaritytothatofthetoner, isappliedtothereversesidebythetransferroller.  
The toner is attracted by the positive charge and is transferred onto the paper. This  
results in the transfer of the toner image formed on the image drum onto the paper.  
5
6
Cleaning  
The cleaning roller temporarily attracts the residual toner on the transferred OPC drum  
with static electricity, then returns the toner to the OPC drum.  
Fusing  
The transferred unfused toner image is fused to a sheet of paper by applying heat and  
pressure to the image.  
Figure 2-5 is a flow for the electro-photographic process.  
2 - 11  
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2 - 12  
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2.5.1 Explanation of Each Process Operation  
(1) Hopping  
As shown in the figure below, the clutch for hopping is turned on/off according to current ON/  
OFF to a coil.  
When the clutch is OFF  
Spring for resetting  
Clutch plate  
Hopping gear  
Coil  
Magnetic  
substance plate  
Pin  
Hopping shaft  
Hopping roller  
Engagement section  
When the clutch is ON  
Hopping gear  
Clutch plate  
When the clutch is on, the hopping gear engages with the clutch plate to rotate the hopping  
roller.  
When the clutch is off, the hopping gear is separated from the clutch plate by the spring for  
resetting, disabling the rotation of the hopping roller.  
2 - 13  
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(2) Printing and warm-up  
At warm-up  
Triple gear  
Transfer gear  
Resist gear  
Idle gear  
Planetary gear  
a"  
a'  
a
Hopping gear  
Gear A  
Pulse motor (main)  
Rotatethepulsemotor(main)intheadirection. Theplanetarygearrotatesinthea’direction,  
dislocatingitspositioninthea”direction. Thiscausestheplanetarygeartobeseparatedfrom  
gear A. The hopping gear will not rotate. The triple gear and transfer gear rotate via the idle  
gear to drive the EP unit.  
Triple gear  
At printing  
Transfer gear  
Resist gear  
Idle gear  
Planetary gear  
b"  
b'  
b
Hopping gear  
Gear A  
Pulse motor (main)  
The paper is further advanced in synchronization to the print data.  
2 - 14  
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(3) Charging  
Charging is performed by applying DC voltage to the charge roller that is in contact with the  
surface of the OPC drum.  
High-  
voltage  
power  
supply  
Charge roller  
OPC drum  
(4) Exposure  
Light emitted from the LED head irradiates the negatively charged surface of the OPC drum.  
The surface potential of the irradiated surface attenuates to form the electrostatic latent  
image corresponding to the image signal.  
LED head  
LED head  
Charge roller  
High-  
voltage  
power  
supply  
OPC drum  
OPC drum  
Paper  
2 - 15  
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(5) Development  
The electrostatic latent image on the surface of the OPC drum is changed to a visible toner  
image by applying a toner to it. Development is performed in the contact part between the  
OPC drum and developing roller.  
1 The sponge roller negatively charges a toner and applies it to the developing roller.  
Developing blade  
Charge roller  
Sponge roller  
Developing roller  
OPC drum  
2 The toner applied to the developing roller is thin-coated by the developing blade.  
3 A toner adheres to the exposure part of the OPC drum in the contact part between the  
OPC drum and developing roller. This causes the electrostatic latent image to be  
changed to a visible image.  
2 - 16  
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(6) Transfer  
The transfer roller is composed of conductive sponge material. This roller is set so that the  
surface of the OPC drum and sheets of paper will adhere closely.  
A sheet of paper is placed on the surface of the OPC drum and the positive charge opposite  
to the negative charge of a toner is applied from the reverse side by the transfer roller.  
When a high negative voltage is applied from the power supply to the transfer roller, the  
positive charge induced on the surface of the transfer roller moves to the paper side at the  
contact part between the transfer roller and the sheet of paper. The positive charge on the  
lower side of the sheet of paper then causes the negatively charged toner adhering to the  
surface of the OPC drum to move to the upper side of the sheet. This enables transfer to the  
sheet of paper.  
OPC drum  
Paper  
High-voltage  
power supply  
Transfer roller  
2 - 17  
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(7) Fusing  
The transferred unfused toner image is fused to a sheet of paper because heat and pressure  
are applied when it passes between the heat roller and back-up roller.  
The Teflon-coated heat roller contains a 400 W heater (Halogen lamp) that heats the heat  
roller. Thethermistoronthesurfaceoftheheatrollerkeepsthetemperatureoftheheatroller  
constant. A thermostat is also installed for safety. If temperature rises abnormally, this  
thermostat opens to suspend voltage supply to the heater.  
The back-up roller is pressurized to the heat roller by the pressure spring on each side.  
Thermistor  
Separation claw  
Heat roller  
Heater  
Back-up roller  
Pressure spring  
(8) Cleaning  
After transfer has terminated, the cleaning roller temporarily draws in the untransferred  
residual toner adhering to the OPC drum with static electricity and then returns it to the OPC  
drum.  
OPC drum  
Cleaning roller  
High-voltage  
power supply  
Transfer roller  
2 - 18  
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2.6  
Paper Jam Detection  
The OKIPAGE 4w Plus/4m monitors the paper status when the power supply is on and during  
printing. In the following cases, the OKIPAGE 4w Plus/4m interrupts the printing process as a  
paper jam. Printing can be recovered by opening the cover, removing the jammed paper, and  
closing the cover.  
Error  
Cause of Error  
Paper inlet jam  
• Only the manual feed sensor detects "Paper exists" when the power supply is on.  
• The leading part of the paper does not reach the paper sensor although hopping  
operation was performed three time.  
Paper feed jam  
Paper outlet jam  
• The leading part of the paper does not reach the outlet sensor within a fixed time after it  
has passed the paper sensor.  
• The trailing part of the paper does not pass the outlet sensor within L mm after the  
leading part of the paper has passed the outlet sensor.  
2.52" (64 mm) <= L <= 15.77" (400.6 mm)  
Paper size error  
• The trailing part of the paper does not pass the paper sensor within L mm after the  
leading part of the paper has passed the paper sensor.  
2.52" (64 mm) <= L <= 15.77" (400.6 mm)  
Error  
Type of Error  
Paper feed error  
Paper feed jam1  
Paper size error  
Paper outlet jam  
Paper feed jam 2  
Supervisory Sensor  
Reference Value  
69.8  
Pluse  
35  
Minus  
—
Electromagnetic clutch ON/  
Paper sensor ON  
Paper sensor ON/  
Outlet sensor ON  
—
—
122.9  
20.0  
—
Paper sensor ON/  
Paper sensor OFF  
2.52" (64 mm) <= L <=  
15.77" (400.56 mm)  
2.52" (64 mm) <= L <=  
15.77" (400.56 mm)  
Outlet sensor ON/  
Outlet sensor OFF  
45.0  
20.0  
45.0  
Paper end sensor OFF/  
Outlet sensor OFF  
121.9  
20.0  
Unit: mm  
2 - 19  
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Normal  
rotation  
Pulse motor  
(main)  
OFF  
Reverse  
rotation  
Electromagnetic  
clutch  
OFF  
ON  
Manual feed  
sensor  
OFF  
ON  
OFF  
ON  
Paper sensor  
OFF  
ON  
Outlet sensor  
Warm-up  
Paper feed  
Printing  
Operation mode  
Timing Chart for Paper Feed (Tray Feed)  
2 - 20  
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Paper Feed Check List  
2.7  
Toner Low Detection  
• Hardware configuration of toner sensor  
The figure below shows the hardware configuration of the toner sensor.  
Image drum unit  
Agitation bar (iron)  
Magnet  
Toner sensor lever  
Photointerrupter  
Hardware Configuration of Toner Sensor  
• Toner detection method  
(1) Toner sensor monitoring conditions are shown in the figure below.  
Toner sensor  
Magnet draw-in  
t1  
T
Caution: The toner sensor is not monitored when the drum is inactive.  
(a) Whenthetoner-lowstatecontinuestwice, TonerLowoccurs. (Thisstateismonitored  
at a cycle of 40 milliseconds.)  
(b) When the toner-full state continues twice, Toner Low is released. (This state is  
monitored at a cycle of 40 milliseconds.)  
(c) When the toner sensor does not change over two cycles (T x 2), the toner sensor  
alarm state occurs.  
(d) After the EP unit has been replaced (after the drum counter has been reset), Toner  
Low is not detected when the drum counter indicates 1 to 100 counts.  
2 - 21  
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(2) The basic rotation cycle of the toner sensor is as follows:  
T time  
Basic rotation cycle of toner sensor  
Toner low time  
4.9 sec.  
t1 > 1.2 sec.  
Toner full time  
1.2 sec. > t1 > 0.28 sec.  
2.8  
Cover Open  
Opening the stacker cover turns off the microswitch on the high-voltage power supply board to  
suspend +5 V supply to the high voltage power supply. This results in the stop of all high-voltage  
outputs. At the same time, the CVOPN signal is issued to notify the main control board of the  
switch status and cover open processing is executed.  
2 - 22  
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3. PARTS REPLACEMENT  
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3.  
PARTS REPLACEMENT  
This chapter explains how to replace parts, assemblies, and units in the field.  
The replacement procedures to be explained here include dismounting, not mounting. When  
mounting parts, assemblies, and units, reverse the dismounting steps.  
3.1  
Precautions for Parts Replacement  
(1) Be sure to dismount the AC cord and interface cable before replacing parts.  
(a) Be sure to dismount the AC cord in the following procedures:  
i) Turn off the POWER switch of the printer (“0“).  
ii) Disconnect the AC inlet plug of the AC cord from the AC receptacle.  
iii) Disconnect the AC cord and interface cable from the printer.  
(b) Be sure to reconnect the printer in the following procedures:  
i) Connect the AC cord and interface cable to the printer.  
ii) Connect the AC inlet plug to the AC receptacle.  
iii) Turn on the POWER switch of the printer (“|”).  
Dismounting  
OFF  
Reconnection  
ON  
(2) Do not disassemble parts as long as the printer is operating normally.  
(3) Minimize disassembling. (Only the parts indicated in the parts replacement procedures can  
be dismounted.)  
(4) Use only the specified maintenance tools.  
(5) Disassemble parts in the specified sequence; otherwise, parts may be damaged.  
(6) Temporarily tighten small parts such as screws and collars to the original locations because  
they tend to be lost easily.  
(7) When handling ICs such as CPUs, ROM, and RAM and PC boards, do not wear gloves that  
easily cause static electricity.  
(8) Do not place PC boards directly on devices and floors.  
3 - 1  
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[Maintenance Tools]  
Table 3-1 lists the maintenance tools necessary for parts replacement.  
Table 3-1 Maintenance Tools  
No.  
1
Maintenance Tools  
No. 1-100 Philips  
Q'ty  
1
Use  
Remarks  
2~2.5 mm screw  
screwdriver  
No. 2-100 Philips  
screwdriver  
1
2
3
4
5
3~5 mm screw  
No. 3-100 Philips  
screwdriver  
1
1
No. 5-200 screwdriver  
Digital multimeter (tester)  
1
Pliers  
1
1
6
7
Handy cleaner  
[Maintenance Utility]  
Table 3-2 Maintenance Utility  
No.  
1
Maintenance Utility  
Q'ty  
Use  
Remarks  
1
Maintenance utility  
3 - 2  
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3.2  
Parts Layout  
This section explains the layout of main parts.  
[Upper Cover Assy]  
Spur gear (A)  
Guide slide (R)  
Guide slide (L)  
Hopper plate  
Upper cover  
Figure 3-1  
3 - 3  
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[Base Frame Unit]  
Flat cable assy  
LED head  
Head spring  
Top cover assy  
Pressure roller (B)  
(Back up roller)  
Paper guide (R)  
Paper guide (L)  
Heat assy  
Transfer roller  
Resistration roller  
Idle gear heat  
Hopper  
spring  
Paper  
holder  
Drive shaft E (eject)  
Tension  
plate  
Slide plate M  
Stopper spring  
Hopping  
shaft  
assy  
Magnet H  
(hopping shaft)  
Roller holder  
Hopping roller  
Toner  
cartridge  
unit  
High-voltage power  
supply board  
Pulse motor  
(main)  
Power sensor E  
EP unit  
Sheet guide  
Figure 3-2  
3 - 4  
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[Base Plate Unit]  
Power supply unit  
Main control board  
Base plate assy  
Figure 3-3  
3 - 5  
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3.3  
Replacing Parts  
This section explains how to replace parts and assemblies.  
3.3.1 Hopper Plate  
(1) Remove two claws and dismount hopper plate 1.  
1
3 - 6  
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3.3.2 LED Head and Head Spring  
(1) Open top cover assy 1.  
(2) Dismount the left clamp and LED head 2. Then, dismount flat cable assy 3.  
(3) Dismount two head springs 4.  
2
3
4
4
1
3 - 7  
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3.3.3 Transfer Roller  
(1) Open top cover assy 1and dismount EP unit 2.  
(2) Remove the right claw. Then, dismount transfer roller 3, two resist bearings 4, and gear  
T5.  
2
5
4
3
4
Label  
1
3 - 8  
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3.3.4 Upper Cover Assy  
(1) Turn off the power switch and unplug the AC cord from the AC socket.  
(2) Disconnect interface cable 1.  
(3) Open top cover assy 2and dismount EP unit 3.  
(4) Move paper guide (L) 4and paper guide (R) 5on the rear of the printer to the center.  
(5) Remove two front claws of upper cover assy 6and two rear screws Aand lift upper cover  
assy 6.  
(6) Dismount spur gear (A) 7, guide slide (L) 8, and guide slide (R) 9.  
(7) Dismount lamp 0.  
9
7
8
6
A
A
0
3
2
1
5
4
3 - 9  
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3.3.5 High-Voltage Power Supply Board  
(1) Dismount upper cover assy. (See Section 3.3.4.)  
(2) Remove three screws 1and draw out high-voltage power supply board 2.  
(3) Disconnect all the cables 3from high-voltage power supply board 2and dismount high-  
voltage power supply board 2.  
Caution: Note the following when assembling the high-voltage power supply board:  
• Mount the high-voltage power supply board with top cover assy removed or  
open.  
• Take care that cable 3will not interfere with the paper sensor exit when it is  
connected.  
Paper sensor exit  
3
1
2
3
1
3 - 10  
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3.3.6 Top Cover Assy and Flat Cable Assy  
(1) Dismount the upper cover assy. (See Section 3.3.4.)  
(2) Dismount the LED head. (See Section 3.3.2.)  
(3) Press the left clamp outward and dismount the engagement and top cover assy1. (Tension  
spring 2also comes off at the same time.)  
(4) Disconnect connector CN6 and dismount flat cable assy 3.  
1
3
2
connector (CN6)  
3 - 11  
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3.3.7 Paper Holder  
(1) Dismount the upper cover assy. (See Section 3.3.4.)  
(2) Dismount paper holder 1.  
(3) Unlock and dismount paper guide (L) 2and paper guide (R) 3.  
(4) Remove the claw and dismount hopper spring 4.  
(5) Remove the claw and dismount stopper spring 5.  
4
3
5
2
1
3 - 12  
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3.3.8 Side Plate M and Idle Gear  
Perform parts replacement while making the base frame assy stand so that side plate M will face  
upward.  
(1) Dismount the upper cover assy. (See Section 3.3.4.)  
(2) Remove two screws 1and two claws, then dismount plate side M2.  
(3) Dismount earth plate 3, two idle gears P4, idle gear M5, idle gear 3R6, idle gear 2R7,  
and idle gear heat 8.  
8
4
6
4
5
2
7
3
1
1
3 - 13  
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3.3.9 Heat Assy  
This section explains how to dismount the heat assy and parts in the assy.  
<Dismounting the heat assy>  
(1) Dismount the upper cover assy. (See Section 3.3.4.)  
(2) Dismount the high-voltage power supply board. (See Section 3.3.5.)  
(3) Remove two screws 1, disconnect connector 2, and dismount heat assy 3.  
<Dismounting parts in heat assy>  
(4) Dismount heat separator D.  
(5) Remove screw 4and dismount terminal plate 6. (Handle heat assy 3carefully because  
Halogen lamp 7comes off.)  
(6) Turn left and right heat bearings8in the arrow direction to unlock. Then, dismount Halogen  
lamp 7, heat bearing 8, heat roller 9, and heat gear Ctogether. (Take care not to drop  
Halogen lamp 7.)  
(7) Dismount thermistor 0.  
(8) Dismount the clamp, then thermostat A, heat contact B, and heat cord 5together.  
(9) Dismount heat contact Band heat cord 5from thermostat A.  
Caution: Take care not to bend the claw when dismounting heat bearing 8.  
3 - 14  
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1
3
1
2
3 - 15  
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7
C
Voltage display side  
8
8
9
B
5
A
0
6
4
3 - 16  
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3.3.10 Drive Shaft E (Eject) and Eject Roller  
(1) Dismount the upper cover assy. (See Section 3.3.4.)  
(2) Dismount top cover assy. (See Section 3.3.6.)  
(3) Remove two screws 1from heat assy (Section 3.3.9), lift the heat assy, and dismount idle  
gear E (A) 2and idle gear E (B) 3.  
(4) Unlock and dismount drive shaft E (Eject) 4.  
(5) Dismount two eject rollers 5.  
4
3
2
5
1
1
3 - 17  
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3.3.11 Pressure Roller B (Back Up Roller)  
(1) Dismount the upper cover assy. (See Section 3.3.4.)  
(2) Dismount the high-voltage power supply board. (See Section 3.3.5.)  
(3) Dismount the heat assy. (See Section 3.3.9.)  
(4) Dismount the engagement with the left ground, then pressure roller B1. (Two bearing BUs  
2and two bias springs 3also come off at the same time.)  
2
1
3
2
3
3 - 18  
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3.3.12 Separator Guide  
(1) Dismount the upper cover assy. (See Section 3.3.4.)  
(2) Dismount the high-voltage power supply board. (See Section 3.3.5.)  
(3) Remove four screws 1.  
(4) Dismount inlet 2from base frame 3.  
<Dismounting inlet 2>  
Insert a screwdriver into the hole on the side of base frame 3, remove the inlet claw from  
base frame 8, and dismount inlet 2.  
(5) Disconnect three cables 4and connector Aand dismount base frame 3. Then, remove  
screw 0and disconnect FG cable B.  
<Disconnecting connector A>  
Dismount connector Aby drawing it upward while pushing the clamp lever with a standard  
screwdriver.  
(6) Dismount the paper holder assy. (See Section 3.3.7.)  
(7) Dismount two engagements and sheet guide 5.  
(8) Dismount friction pad 6, compression spring S7, and separator guide 8.  
(9) Dismount paper sensor E9.  
3 - 19  
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<Dismounting Inlet>  
1
Screw driver  
1
6
<Disconnecting Connector>  
8
3
7
9
5
2
4
B
1
4
0
(–) Screw driver  
Clamp lever  
A
1
3 - 20  
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3.3.13 Pulse Motor (Main)  
(1) Dismount the upper cover assy. (See Section 3.3.4.)  
(2) Dismount the high-voltage power supply board. (See Section 3.3.5.)  
(3) Dismount side plate M. (See Section 3.3.8.)  
(4) Dismount the base frame. (See Section 3.3.12.)  
(5) Remove two screws 1and dismount pulse motor (main) 2.  
1
2
3 - 21  
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3.3.14 Hopping Shaft Assy  
(1) Dismount the upper cover assy. (See Section 3.3.4.)  
(2) Dismount the high-voltage power supply board. (See Section 3.3.5.)  
(3) Dismount the base frame. (See Section 3.3.12.)  
(4) Dismount the paper holder assy. (See Section 3.3.7.)  
(5) Dismount the sheet guide. (See Section 3.3.12.)  
(6) Dismount side plate M. (See Section 3.3.8.)  
(7) Raise up roller holder 3, slide hopping shaft assy 1, and dismount roller holder 3and  
hopping roller 4. (Knock pin 5also comes off at the same time. Take care not to lose it.)  
(8) Draw out hopping shaft assy 1to the right and dismount magnet H6.  
2
5
1
6
3
4
3 - 22  
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3.3.15 Resist Roller  
(1) Dismount the upper cover assy. (See Section 3.3.4.)  
(2) Dismount Idle gear R 3and Gear R 4.  
(3) Move resist roller 1to the right and dismount it by lifting. (Two resist bearings 2also come  
off at the same time. Take care not to lose them.)  
3
1
2
2
4
3 - 23  
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3.3.16 Paper Sensor E, Paper Sensor Exit and Toner Sensor Assy  
(1) Dismount the upper cover assy. (See Section 3.3.4.)  
(2) Dismount the high-voltage power supply board. (See Section 3.3.5.)  
(3) Dismount the base frame. (See Section 3.3.12.)  
(4) Dismount the paper holder assy. (See Section 3.3.7.)  
(5) Dismount the sheet guide. (See Section 3.3.12.)  
(6) Dismount the heat assy. (See Section 3.3.9.)  
(7) Dismount drive shaft E. (See Section 3.3.10.)  
(8) Dismount paper sensor E1.  
(9) Dismount paper sensor exit 2.  
(10) Dismount toner sensor assy 3.  
2
3
1
3 - 24  
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3.3.17 Base Plate  
(1) Dismount the upper cover assy. (See Section 3.3.4.)  
(2) Dismount the base frame. (See Section 3.3.12.)  
(3) Remove two screws 1, disconnect connector 2, and dismount power supply unit 3.  
(4) Dismount insulation sheet 4.  
(5) Remove two screws 5and dismount main control board 6from base plate 7.  
2
5
6
1
1
3
5
4
7
3 - 25  
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4. ADJUSTMENT  
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4.  
ADJUSTMENT  
This chapter explains adjustment necessary when a part is replaced.  
This adjustment is made by changing the parameters values set in EEPROM on the main control  
board. The printer driver or maintenance utility can be used to change these values.  
Only servicemen and maintenance personnel can use the maintenance utility. This utility cannot  
be made public for printer end users.  
4.1  
Adjustment Types and Functions  
4.1.1 Printer Driver  
(For Microsoft Windows)  
This printer driver has the following functions:  
• Drum counter reset  
• Charge roller cleaning  
Figure 4-1  
(1) Drum counter reset  
This function resets the life of the drum counter when the EP unit is replaced. Clicking the  
“clear” button resets the life.  
(2) Charge roller cleaning  
This function cleans the charge roller of the EP unit; it is used when printing is unclear. For  
details on how to operate this function, refer to “User’s Manual.”  
4 - 1  
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(For Macintosh) <only OKIPAGE4m>  
(1) Drum counter reset  
This function resets the life of the drum counter when the EP unit is replaced. Clicking the  
“Reset” button resets the life.  
(2) Charge roller cleaning  
This function cleans the charge roller of the EP unit; it is used when printing is unclear. For  
details on how to operate this function, refer to “User’s Manual.”  
4 - 2  
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4.1.2 Engine Maintenance Utility  
See Appendix D.  
4.2  
Adjustment When Replacing a Part  
The table below lists the parts that requires adjustment when they are replaced.  
Part to be Replaced  
LED head  
Adjustment  
Set the LED head drive time.  
Set the LED head dot count.  
EP unit  
Reset the drum counter. (Refer to "User's Manual".)  
Upload or download EEPROM data.  
Main control board  
4.2.1 Setting LED Head Drive Time  
Caution: When the liminous intensity of a new LED head is the same as that of the old LED  
head, do not set the LED head drive time.  
Use“LEDHeadMakingNo.”intheenginemenutabofthemaintenancedrivertosettheluminous  
intensity displayed on the LED head as the LED head drive time. (See Figure 4-2.)  
• Luminous intensity of LED head  
Luminous intensity display  
070  
314  
The last three digits indicate  
the luminous intensity of the  
LED head.  
Figure 4-2  
4 - 3  
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4.2.2 Setting the LED Head Dot Count  
There are two types of LED head dot count. Use the following label to identify these types. Use  
“LED Head Width” in the engine menu table to set the LED head dot count. (See Figure 4-2.)  
• Identifying the types of LED head dot count  
Nallow Type (2496 dots)  
1104G2  
Full Type (2560 dots)  
Figure 4-3  
4 - 4  
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4.2.3 Uploading and Downloading EEPROM Data  
When the main control board is replaced, EEPROM data must be reflected on a new main control  
board. Use “EEPROM Operations” in the option tab of the maintenance utility to reflect EEPROM  
data on the new main control board. (See Figure 4-4.)  
Reflect EEPROM data on the new main control board in the following procedures:  
(1) Check that the printer and PC are connected by the parallel I/F, then execute the  
maintenance utility.  
(2) Click the "Option" button in "Main Menu Dialog".  
(3) Click the “Upload” button (Upload EEPROM Data) in “EEPROM Operations.” (EEPROM  
data read is completed.)  
(4) The read EEPROM data is displayed in “Dialog” of the maintenance driver.  
(5) Leave the display of the maintenance driver as is and replace the main control board.  
(6) Clickthe“Download”button(DownloadEEPROMData)in“EEPROMOperations”. (EEPROM  
data write is completed.)  
Depending on the level of a main control board failure (parallel I/O failure, etc.), however,  
EEPROM data may be unable to be uploaded.  
In such a case, use the maintenance utility to perform the following adjustment after replacing the  
main control board:  
• Setting the LED head drive time (Section 4.2.1)  
• Setting the LED head dot count (Section 4.2.2)  
• Setting specifications (ODA/OEL/INT-A/INT-L)  
4 - 5  
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5. PERIODICAL MAINTENANCE  
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5.  
PERIODICAL MAINTENANCE  
5.1  
Periodical Replacement Parts  
Table 5-1 lists the part and unit to be replaced periodically.  
Table 5-1 Routine Replacement Parts  
Part to be Checked  
Simultaneously  
Part Name  
Replacement Time  
Remarks  
Toner cartridge  
EP unit  
When "Toner Low" is displayed.  
LED head  
Consumables  
Consumables  
When "Change Drum" is displayed.  
Caution: Also reset the drum counter when replacing the EP unit.  
5.2  
Cleaning  
Remove any toner or dirt and clean the circumference and inside of the printer with a waste cloth.  
Caution: Do not touch the OPC drum, LED lens array, and connector block of the LED head.  
5.2.1 Cleaning the LED Lens Array  
When a white belt or a white stripe (void, light printing) occurs in the vertical direction of the print  
surface, clean the LED lens array or replace the toner cartridge.  
Caution: Be sure to use an LED head cleaner to clean the LED lens array.  
White belt or stripe  
(void, light printing)  
Figure 5-1  
5 - 1  
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(1) Set the LED head cleaner in the LED lens array, as shown in the figure below, and slide the  
cleaner left and right several time to clean the head.  
Caution: Do not press the LED head cleaner against the LED lens array.  
LED lens array  
LED head cleaner  
Figure 5-2  
5 - 2  
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6. TROUBLESHOOTING PROCEDURES  
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6.  
TROUBLESHOOTING PROCEDURES  
6.1  
Troubleshooting Tips  
(1) Check the basic check points written in the user’s manual.  
(2) Gather detailed failure information as much as possible from the customer.  
(3) Check the printer under the condition close to that under which the failure occurred.  
6.2  
6.3  
6.4  
Check Points Before Correcting Image Problems  
(1) Is the printer running in proper ambient conditions?  
(2) Are consumables (toner and EP unit) replaced correctly?  
(3) Are sheets of paper normal?  
(4) Is the EP unit set correctly?  
Notes When Correcting Image Problems  
(1) Do not touch the surface of the OPC drum nor place foreign matter on it.  
(2) Do not expose the OPC drum to direct sunlight.  
(3) Do not touch the fuser because it heats up during operation.  
(4) Do not expose the image drum to light for more than five minutes at room temperature.  
Preparation Before Troubleshooting  
(1) Message display  
The failure status of the OKIPAGE 4w plus /4m is displayed on the status monitor of the PC.  
Take proper action according to the message displayed on the status monitor.  
(2) LED display  
The OKIPAGE 4w plus /4m is equipped with only one LED. This LED indicates one of the  
following statuss:  
Printer Status  
Ready  
LED Indication  
Lighting  
Printing in progress  
Recoverable alarm  
Unrecoverable alarm  
Blink (*1)  
*1: The LED blinks at a cycle of 1 second (0.5s ON)  
from data reception to printing end.  
*2: The LED blinks at a cycle of 0.24 second (0.12s ON).  
*3: The LED blinks at a cycle of 0.24 second (0.12s ON).  
Blink (*2)  
Blink (*3)  
6 - 1  
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6.5  
Troubleshooting  
If a trouble occurs in the OKIPAGE 4w Plus/4m, troubleshoot according to the following  
procedures:  
Trouble  
Perform detailed  
Troubleshoot according to  
"Status Monitor Message List"  
(See Section 6.5.1.)  
Trouble indicated by  
the message displayed  
on the status monitor.  
troubleshooting according  
to the troubleshooting flow.  
(See Section 6.5.2.)  
Image problem (or  
trouble not displayed on  
the status monitor)  
Troubleshoot according to  
Section 6.5.3.  
6.5.1 Status Monitor Message List  
Table 6-1 lists the statuses and troubles to be displayed on the status monitor in the message  
format.  
6 - 2  
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Table 6-1  
Status  
Code  
Category  
Normal status  
Status Message  
Warming Up  
Display Content  
Warming-up status  
Remedy  
18 00  
00 10  
00 20  
10 00  
10 01  
Normal operation  
Normal operation  
Normal operation  
Normal operation  
Online (ready) status  
Online (Ready)  
Power Save Mode  
Toner Low  
Power save status  
The toner amount of the toner cartridge is small.  
The EP unit is not installed or the toner sensor is  
faulty.  
Toner Sensor  
Replace the toner cartridge.  
10 02  
12 20  
Life of EP drum  
Change Drum  
Install the EP unit or replace the toner sensor.  
The paper is in the manual feed mode.  
Manual Paper In  
Replace the EP unit.  
(Note: Be sure to reset the drum counter after replacing the  
EP unit.)  
14 20  
14 30  
Printing in progress  
Ejection in progress  
Printing In Progress  
Ejection In Progress  
Normal operation  
Normal operation  
Request the paper to be set in the manual feed  
mode.  
Manual Request  
Executive  
Letter  
Legal 14  
Legal 13  
A6  
A5  
A4  
B5  
Monarch  
COM-10  
DL  
C5  
COM-9  
Set the requested paper in the manual feed mode.  
16 01  
16 02  
16 03  
16 04  
16 18  
16 19  
16 1A  
16 21  
16 50  
16 51  
16 5A  
16 5B  
16 7F  
The paper sizes are as follows:  
Executive, Letter, Legal 14, Legal 13, A4, A5, A6,  
B5, Monarch, DL, C5, COM-10, COM-9  
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Table 6-1 (Cont'd)  
Status  
Code  
Category  
Paper size error  
Status Message  
Paper Size Error  
Display Content  
Remedy  
30 00  
Paper of improper size was fed.  
Check the paper. Also check whether more than one sheet of  
paper were fed simultaneously. To release the error display,  
open the cover, then close it. If this error occurs frequently, see  
Section 6.5.2 3.  
2.52" (64 mm)  
L
15.77" (400.56 mm)  
Paper jam  
Paper Input Jam  
Paper Feed Jam  
Paper Exit Jam  
31 00  
32 00  
33 00  
A paper jam occurred when sheets of paper were  
being supplied.  
Check the paper. To release the error display, close the cover,  
then close it. If this error occurs frequently, see Section 6.5.2  
2-1.  
A paper jam occurred during paper feeding.  
A paper jam occurred during paper ejection.  
The upper cover is open.  
Open the cover, then remove the jammed paper. To release  
the error display, close the cover. If this error occurs fre-  
quently, see Section 6.5.2 2-2.  
Open the cover, then remove the jammed paper. To release  
the error display, close the cover. If this error occurs fre-  
quently, see Section 6.5.2 2-3.  
Cover open  
Cover Open  
4F 00  
40 01  
To release the error display, close the cover. If this error  
occurs frequently, replace the power supply board.  
Buffer overflow  
Page Buffer Overflow  
The page buffer overflowed because there are a  
large number of print data.  
To release the error display, press the reset button on the  
status motor of the printer driver. Install option RAM or reduce  
the number of print data.  
Print Over Run  
40 10  
60 10  
60 30  
A print overrun occurred because print data is  
complicated.  
To release the error display, press the reset button on the  
status motor of the printer driver. Simplify the print data format.  
Device configuration error  
Program ROM Check Error  
Resident RAM Check Error  
An error occurred during program ROM check.  
An error occurred during resident RAM check.  
Replace program ROM or the main control board. (When  
replacing the main control board, also adjust EEPROM data.)  
(See Section 4.2.4.)  
Replace the main control board. (When replacing the main  
control board, also adjust EEPROM data.) (See Section 4.2.4.)  
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Table 6-1 (Cont'd)  
S
C
t
o
at
u
s
C
a
t
e
g
o
r
y
S
t
a
t
u
s
M
e
s
s
a
g
e
D
i
s
p
l
ay
C
o
n
t
e
n
t
R
emedy  
d
e
Device configuration error  
EEPROM Check Error  
60 40  
An error occurred during EEPROM check.  
Replace the main control board. (When replacing the main  
control board, also adjust EEPROM data.) (See Section  
4.2.4.)  
Option RAM Check Error  
60 60  
An error occurred during option RAM check.  
Check the connection of the Option RAM PC board. If the  
option RAM PC board is faulty, replace it.  
Fuser Error  
60 80  
60 90  
60 91  
60 92  
60 C0  
A heater timeout error occurred.  
A thermistor error occurred.  
The thermistor is open.  
See Section 6.5.2 4.  
Thermistor Error  
Replace the thermistor of the heater Assy.  
Replace the thermistor of the heater Assy.  
Replace the thermistor of the heater Assy.  
Thermister Open Check Error  
Thermister Short Check Error  
Watch Dog Timeout Error  
A thermistor short occurred.  
A watchdog timeout occurred.  
To release the error display, turn on the power supply again.  
Replace the main control board.  
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6.5.2 Status Message Troubleshooting  
Some failures cannot be corrected according to the status message trouble list. Troubleshoot  
these failures according to the following troubleshooting flowcharts:  
Flowchart No.  
Item  
No.  
1.  
1
The OKIPAGE 4w Plus/4m malfunctions after the power supply has been turned on.  
2.  
Jam error  
2-1  
2-2  
2-3  
Paper input jam  
Paper feed jam  
Paper exit jam  
3.  
4.  
Paper size error  
Fusing error  
3
4
Caution: When replacing the main control board troubleshooted according to the troubleshoot-  
ing flowcharts, also adjust EEPROM data. (See Section 4.2.4.)  
6 - 6  
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1
The OKIPAGE 4w Plus/4m malfunctions after the power supply has been  
turned on.  
• Turn the power supply off, then on again.  
• Is the LED lamp on?  
• No Is the AC cable connected correctly?  
• No  
Connect the AC cable correctly.  
• Yes Is +5 V supplied between CN1 Pin 7 and CN1 Pin 13 of the high-voltage  
power supply board?  
(Pin 7: +5 V, Pin 13: 0 V)  
• No  
Are the CN1 connectors of the high-voltage power supply board and  
main control board connected correctly?  
• No Connect the CN1 connectors correctly.  
• Yes Is +5 V supplied between CN2 Pin 2 and CN2 Pin 3 of the main  
control board?  
(Pin 2: +5 V, Pin 3: 0 V)  
• No Replace the power supply board.  
• Yes Replace the main control board.  
• Yes Is 1-2 V voltage supplied between CN1 Pin 2 and CN1 Pin 13 of the high-  
voltage power supply board?  
• No  
Replace the main control board.  
• Yes Replace the high-voltage power supply board.  
• Yes  
Replace the main control board.  
6 - 7  
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[JAM error]  
2-1 Paper input jam  
• Does a paper input jam occur when the power supply is turned on?  
• Yes Is the jammed paper on paper sensor E?  
• Yes Remove the jammed paper.  
• No  
Is paper sensor E (manual feed/paper) operating normally?  
• No Replace paper sensor E (manual feed or paper).  
• Yes  
Replace the high-voltage power supply board.  
• No  
Does a paper input jam occur during paper loading?  
• Yes  
Is the paper already fed to paper sensor E (manual feed)?  
• Yes Is paper sensor E (manual feed) operating normally?  
• No  
Replace paper sensor E (manual feed).  
• Yes Check the gear block or replace high-voltage power supply board.  
Is the paper already fed to paper sensor E (paper)?  
• No  
• Yes Is paper sensor E (paper) operating normally?  
• No  
Replace paper sensor E (paper).  
• Yes Replace high-voltage power supply board.  
Replace the stepping roller or friction pad.  
Is the hopping roller rotating?  
• No  
• No  
• Yes  
Check the coil resistance of magnet H. Is the resistance normal (about 120  
Ω)?  
• No Replace magnet H.  
• Yes  
Is +24 V supplied between CN8 Pin 1 and CN8 Pin 2 of the main control  
board?  
• No Replace the main control board.  
• No  
• No  
Check the gear block or replace the hopping shaft assy.  
• No  
Are the CN7 connectors of the pulse motor (main) and main control board con-  
nected?  
Connect the CN7 connectors correctly.  
6 - 8  
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• Yes  
Measure the resistance of the pulse motor (main). Is the resistance normal (about  
12.6 Ω)?  
• No  
• Yes  
Replace the pulse motor (main).  
Replace the main control board.  
6 - 9  
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[JAM error]  
2-2 Paper feed jam  
• Does a paper feed jam occur when the power supply is turned on?  
• Yes Is the jammed paper on paper sensor E (paper/exit)?  
• Yes Remove the jammed paper.  
• No  
Is paper sensor E (exit/paper) operating normally?  
• No Replace paper sensor E (exit or paper).  
• Yes  
Replace the high-voltage power supply board.  
• No  
Has the paper arrived at paper sensor E (paper)?  
Is the feed roller rotating?  
• No  
• No Check the gear block.  
• Yes  
Is the EP unit set correctly?  
• No Set the EP unit correctly.  
• Yes  
• Yes  
• Yes  
Check the gear block.  
Has the paper arrived at the paper sensor (exit)?  
Is the paper sensor (exit) operating normally?  
• No Replace the paper sensor (exit).  
• Yes  
Replace the high-voltage power supply board.  
• No  
Check the gear block.  
2-3 Paper exit jam  
• Does a paper exit jam occur when the power supply is turned on?  
• Yes Is the jammed paper on the paper sensor (exit)?  
• Yes Remove the jammed paper.  
• No  
Is the paper sensor (exit) operating normally?  
• No Replace the paper sensor (exit).  
• Yes  
Replace the high-voltage power supply board.  
• No  
Check the gear block or replace the eject roller.  
6 - 10  
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3
Paper size error  
• Is the paper of the specified size being use?  
• No  
• Yes  
• No  
Use paper of the specified size.  
Is paper sensor E (paper) operating normally?  
Replace paper sensor E (paper) or clean the inlet sensor on the high-voltage  
power supply board.  
• Yes  
• No  
Is the paper sensor (exit) operating normally?  
Replace the paper sensor (exit) or clean the outlet sensor on the high-voltage  
power supply board.  
• Yes  
Replace the high-voltage power supply board.  
Exit roller  
Paper sensor (exit)  
Heat roller  
Transfer roller  
Feed roller  
Paper sensor E (paper)  
Toner  
Hopping  
sensor  
roller  
Assy  
Paper sensor E (manual feed)  
6 - 11  
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4
Heat assy error  
• Turn the power supply off, then on again.  
• Does the Halogen lamp of the heat assy go on?  
• No  
Is the Halogen lamp or thermostat disconnected?  
• Yes Replace the heat assy, Halogen lamp, or thermostat.  
Replace the power supply unit.  
• No  
• Yes  
Are the CN2 connectors of the power supply unit and main control board connected  
correctly?  
• No  
• Yes  
Connect the CN2 connectors correctly.  
Replace the main control board.  
6 - 12  
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6.5.3 Image Troubleshooting  
This section explains how to troubleshoot when an image problem is output as a result of the  
printing.  
Figure 6-3 is an example of image problem output.  
Symptom  
An image is light or blurred entirely. (Figure 6-3, A )  
Dark background density (Figure 6-3, B )  
A blank paper is output. (Figure 6-3, C )  
Vertical block belt/black stripe (Figure 6-3, D )  
Cyclical defect (Figure 6-3, E )  
Flowchart No.  
1
2
3
4
5
6
7
8
Print void  
Poor fusing (An image is blurred or peeled off when it is touched.)  
Vertical white belt/white stripe (Figure 6-3, F )  
A
Light or blurred  
images entirely  
B
Dark background  
density  
C
Blank paper  
D
Black vertical stripes  
E
Cyclical defect  
F
White vertical belts  
or streaks  
Figure 6-3 Image Problems  
6 - 13  
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1
An image is light or blurred entirely.  
• Is the toner low? (Is "Toner Low" being displayed?)  
• Yes  
Supply a toner.  
• No  
Is the specified paper being used?  
Use the specified paper.  
• No  
• Yes  
Is the lens of the LED head dirty?  
• Yes  
Clean the LED head.  
• No  
Is the LED head installed correctly? (Check the CN6 connector of the main control  
board.)  
• No  
Install the LED head correctly.  
• Yes  
Is the contact plate of the transfer roller in correct contact with the high-voltage  
power supply board? (See Figure 6-4 .)  
F
• Yes  
Is the terminal of the EP unit in correct contact with the contact plate? (See Figure  
6-4 A and )?  
B
• No  
• Yes  
• Has this error been recovered?  
• Yes End  
Replace the EP unit.  
• Has this error been recovered?  
Contact the terminal correctly.  
Replace the transfer roller.  
• No  
• Yes  
End  
Caution: After replacing the EP unit, reset the drum counter. (Refer to  
"Replacing the Drum Cartridge" in "User's Manual".)  
• No  
Replace the main control board or high-voltage power supply board.  
6 - 14  
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2
Dark background density  
• Has the OPC drum being exposed to external light?  
• Yes  
Set the OPC drum in the OKIPAGE 4w Plus/4m and wait for about 30 min-  
utes.  
• No  
• No  
Is the heat roller of the heat assy dirty?  
• Yes  
Clean the heat roller.  
Is the terminal of the EP unit in correct contact with the contact plate? (See Figure  
6-4  
and Figure 6-5 .)  
D
D
• No  
• Yes  
• Has this error been recovered?  
Contact the terminal correctly.  
Replace the EP unit.  
• Yes  
End  
Caution: After replacing the EP unit, reset the drum counter. (Refer to  
"Replacing the Drum Cartridge" in "User's Manual".)  
• No  
Replace the main control board or high-voltage power supply board.  
3
A blank paper is output.  
• Is the LED head connected correctly. (Check the CN6 connector of the main control board.)  
• No  
• Yes  
Connect the LED head correctly.  
Is the terminal of the EP unit in correct contact with the contact plate? (See Figure  
6-5 .)  
E
• No  
• Yes  
• Has this error been recovered?  
Contact the terminal correctly.  
Replace the LED head.  
• Yes  
End  
Caution: Set the LED head drive time when replacing the LED head. (See  
Section 4.2.1.)  
• No  
Replace the main control board or high-voltage power supply board.  
6 - 15  
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4
Vertical black belt/stripe  
• Replace the EP unit.  
• Has this error been recovered?  
• Yes  
End  
Caution: After replacing the EP unit, reset the drum counter. (Refer to  
"Replacing the Drum Cartridge" in "User's Manual".)  
• No  
Replace the LED head.  
• Has this error been recovered?  
• Yes  
End  
Caution: Set the LED head drive time when replacing the LED head. (See  
Section 4.2.1.)  
• No  
Replace the main control board or high-voltage power supply board.  
5
Cyclic defect  
Cycle  
Remedy  
EP drum  
1.98" (50.3 mm)  
1.44" (36.6 mm)  
2.63" (66.8 mm)  
0.81" (20.6 mm)  
0.81" (20.6 mm)  
1.71" (43.4 mm)  
2.46" (62.5 mm)  
1.98" (50.3 mm)  
Clean or replace the EP unit.  
Replace the EP unit.  
Replace the EP unit.  
Replace the EP unit.  
Replace the EP unit.  
Replace the EP unit.  
Replace the heat roller.  
Replace pressure roller B.  
Developing roller  
Toner supply roller  
Charge roller  
Cleaning roller  
Transfer roller  
Heat roller  
Pressure roller B  
Caution: After replacing the EP unit, reset the drum counter. (Refer to "Replacing the Drum  
Cartridge" in "User's Manual".)  
6 - 16  
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6
A blank paper is output.  
• Is the contact plate of the transfer roller in correct contact with the high-voltage power supply  
board?  
• No  
• Yes  
Contact the contact plate of the transfer roller correctly.  
Replace the transfer roller.  
• Has this error been recovered?  
• Yes End  
• No  
Is the terminal of the EP unit in correct contact with the contact plate? (See Figure  
6-4 and Figure 6-5 .)  
A
A
B C D E  
B C D E  
• No  
• Yes  
• Has this error been recovered?  
Contact the terminal of the EP unit correctly.  
Replace the EP unit.  
• Yes  
End  
Caution: After replacing the EP unit, reset he drum counter. (Refer to  
"Rplacing the Drum Cartridge" in "Users Manual".)  
• No  
Is the LED head installed correctly? (Check the CN6 connector the main control  
board.)  
• No  
• Yes  
Contact the LED head correctly.  
Replace the LED head  
• Has this error been recovered?  
• Yes  
• No  
End  
Caution: Set the LED head drive time when replacing the LED head. (See  
Section 4.2.1.)  
Replace the main control board or high-voltage power supply board.  
6 - 17  
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7
Poor fusing  
• Is the specified paper being used?  
• No  
• Yes  
• No  
• Yes  
Use the specified paper. (xerox 4200 (20 lbs))  
Is the bias spring normal? (Tension: 2.5 kg)  
Replace the bias spring.  
Are the heater connector of the heat assy and the CN1 connector of the power  
supply unit connected correctly.  
• No  
• Yes  
Connect the connectors correctly.  
Replace the heat assy.  
• Has this error been recovered?  
• Yes End  
• No  
Replace the main control board or high-voltage power supply board.  
6 - 18  
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8
Vertical white belt/spripe  
• Is the lens of the LED head dirty?  
• Yes  
Clean the LED head.  
• No  
Is the contact plate of the transfer roller in correct contact with the high-voltage  
power supply board? (See Figure 6-5 .)  
E
• No  
• Yes  
Contact the contact plate of the transfer roller correctly.  
Replace the transfer roller.  
• Has this error been recovered?  
• Yes End  
• No  
Is the LED head installed correctly? (Check the CN6 connector of the main control  
board.)  
• No  
• Yes  
Install the LED head correctly.  
Replace the LED head.  
• Has this error been recovered?  
• Yes  
End  
Caution: Set the LED head drive time when replacing the LED head. (See  
Section 4.2.1.)  
• Yes  
Replace the EP unit.  
• Has this error been recovered?  
• Yes  
End  
Caution: After replacing the EP unit, reset the drum counter. (Refer to  
"Replacing the Drum Cartridge" in "User's Manual".)  
• No  
Replace the main control board or high-voltage power supply board.  
6 - 19  
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Contents  
: Toner Supply Roller  
: Developing Roller  
: Charge Roller  
: Cleaning Roller  
: Transfer Roller  
: Heat Roller  
A
B
C
D
E
F
Figure 6-4  
6 - 20  
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Contents  
: Toner Supply Roller  
: Developing Roller  
: Charge Roller  
: Cleaning Roller  
: Ground (Drum)  
A
B
C
D
E
E
Figure 6-5  
6 - 21  
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7. WIRING DIAGRAM  
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7.  
WIRING DIAGRAM  
7.1  
(a)Interconnect Signal Diagram (OKIPAGE 4w Plus)  
C N 2 T h e r m i s t o r  
1
3
A C O u t p u t C N 0 0 1  
C N 1 C o n t r o l I n t e r f a c e  
2
2 3  
2 2  
1
C N 0 0 3 D C O u t p u t  
2 3  
1
2
1
8
2 2  
C N 2 ( P o w e r I n t e r f a c e )  
C N 1 ( H i g h - V o l t a g e / S e n s o r I n t e r f a c e )  
2
2
1
0 V P  
P J O N  
1
4
1
4
3
2
1
D M P H 4 - P  
D M P H 3 - P  
D M P H 2 - P  
D M P H 1 - P  
C N 4 ( P a r a l l e l I n t e r f a c e )  
C N 6 ( L E D H e a d )  
1 8  
3 6  
1
1 3  
1
2
1 9  
1 4  
L E D H e a d  
7 - 1  
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7.1  
(b)Interconnect Signal Diagram (OKIPAGE 4m)  
C N 2 T h e r m i s t o r  
1
3
A C O u t p u t C N 0 0 1  
C N 1 C o n t r o l I n t e r f a c e  
2
2 3  
2 2  
1
C N 0 0 3 D C O u t p u t  
2 3  
1
2
1
8
2 2  
C N 2 ( P o w e r I n t e r f a c e )  
C N 1 ( H i g h - V o l t a g e / S e n s o r I n t e r f a c e )  
8
7
6
5
4
3
2
1
R X D  
N C  
T X D  
R X D  
S G  
T X D  
N C  
X C L K - N  
2
1
2
0 V P  
1
P J O N  
4
1
4
3
2
1
D M P H 4 - P  
D M P H 3 - P  
D M P H 2 - P  
D M P H 1 - P  
C N 4 ( P a r a l l e l I n t e r f a c e )  
C N 6 ( L E D H e a d )  
1 8  
3 6  
1
1 3  
1
2
1 9  
1 4  
L E D H e a d  
7 - 2  
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7.2  
PCB Layout  
7.2.1 Main Control Board (HBMC-2 PCB) (OKIPAGE 4w Plus)  
S W I  
1
2
Short Plug  
SP1  
Plug Setting  
Content  
Remarks  
For a Chinese product and all maintenance parts.  
For all products except Chinese product.  
A
B
External EPROM is valid.  
Mask ROM in the CPU is valid.  
7 - 3  
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7.2  
PCB Layout  
7.2.2 Main Control Board (HBMC-3 PCB) (OKIPAGE 4m)  
S W I  
1
2
Short Plag  
SP1  
Plag Setting  
Content  
Remarks  
not used  
A
B
External EPROM is valid.  
Mask ROM in the CPU is valid.  
Switch Setting  
UPPER SIDE*  
LOWER SIDE  
UPPER SIDE*  
LOWER SIDE  
DIP Switch  
SW1-1  
Content  
AUTO I/F  
FIX I/F (By SW2-2)  
FIX PARALLEL I/F  
FIX MAC I/F  
SW1-2  
*Default setting. Do not change.  
7 - 4  
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7.2.3 High-Voltage Power Supply Board  
7 - 5  
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8. PARTS LIST  
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8.  
PARTS LIST  
6
5
4
3
*1  
2
1
Figure 8-1 Cover Assy Upper  
8 - 1  
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Table 8-1 Cover Assy Upper  
No.  
1
Part Name  
Part No.  
Q'ty  
1
Remarks  
Upper Cover  
Lamp  
1PP4128-1251P1  
3PP4128-1255P1  
2PP4128-1256P1  
2PP4128-1257P1  
4PP4128-1260P1  
40249301  
2
1
3
Guide Slide (L)  
Guide Slide (R)  
Spur Gear (A)  
Hopper Plate  
1
4
1
5
1
6
1
8 - 2  
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f
e
d
d
Z
[
c
g
U
k
Z
W
T
Y
\
T
]
X
V
T
b
T
R
N
K
O
M
^
S
L
Q
L
P
J
E
l
I
F
a
G
H
D
C
7
B
8
A
0
1
o
4
5
2
9
6
3
3
i
Figure 8-2 Base Frame Unit  
8 - 3  
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Table 8-2 Base Frame Unit  
No.  
1
Part Name  
Base Frame Assy  
Part No.  
Q'ty  
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
2
4
1
1
1
1
Remarks  
2PP4083-1502G1  
2
High-Voltage Power Supply Board  
Paper Sensor E  
Friction Pad  
4YA4130-1024G1  
3PP4083-1191P1  
4PB4083-1245P1  
3PP4083-1244P1  
4PP4083-1246P1  
3PA4083-1193G1  
4PB4083-1172P1  
3
4
5
Separator Guide  
Compression Spring S  
Toner Sensor Assy  
Pulse Motor  
6
7
8
9
Ep Unit  
Consumable  
Consumable  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
Toner Cartridge Unit  
Hopping Roller  
Roller Holder (Hopping Roller)  
Magnet H (Hopping Shaft)  
Hopping Shaft Assy  
Knock Pin  
4PB4083-1129P1  
3PP4083-1128P1  
3PB4083-1127P1  
3PA4083-1133G1  
NK2-10-SUS  
Idle Gear R  
4PP4083-1143P1  
3PP4083-1184P1  
3PP4083-1142P1  
3PP4083-1181P1  
3PP4083-1189P1  
3PP4083-1188P1  
3PP4083-1182P1  
3PP4083-1183P1  
4PP4083-1165P1  
3PP4083-1185P1  
4PP4083-1186P1  
3PP4083-1187P1  
3PP4083-1170P1  
40074601  
Idle Gear 2R  
Gear R  
Idle Gear M  
Earth Plate A  
Side Plate M  
Idle Gear P  
Idle Gear 3R  
Tension Plate  
Idle Gear Heat  
Idle Gear E (A)  
Idle Gear E (B)  
Drive Shaft E (Eject)  
Eject Roller  
Resist Bearing  
Resist Roller  
3PP4083-1141P1  
3PB4083-1140P1  
40457001  
Resist Roller  
For China  
32  
33  
Tension Spring  
Gear T  
4PP4083-1252P1  
3PP4083-1151P1  
8 - 4  
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No.  
34  
Part Name  
Transfer Roller  
Part No.  
3YB4083-1150P1  
40456901  
Q'ty  
1
Remarks  
Transfer Roller  
1
For China  
35  
36  
37  
38  
39  
40  
41  
42  
43  
Bias Spring (L) (Back Up Roller)  
Bearing BU (Back Up Roller)  
Pressure Roller B (Back Up Roller)  
Paper Guide (R)  
4PP4083-1136P1  
3PP4083-1161P1  
3PB4083-1160P2  
40249501  
1
2
1
1
Paper Guide (L)  
40249401  
1
Paper Holder  
1PP4083-1231P1  
3PP4083-1192P1  
4PP4083-1247P1  
40271102  
1
Paper Sensor Exit  
Hopper Spring  
1
1
For OEL/OKI-INT, CHINA, TAIWAN  
(OKIPAGE 4W plus)  
Top Cover Assy  
1
Top Cover Assy  
40271104  
1
For KOREA (OKIPAGE 4W plus)  
For OEL (OKIPAGE 4m)  
Top Cover Assy  
40271106  
1
44  
45  
46  
47  
48  
49  
50  
51  
Head Spring  
4PP4083-6168P1  
4YA4116-1228G1  
4YX4083-1134G1  
4PP4083-1137P1  
2
LED Head  
1
Flat Cable Assy  
1
Bias Spring (R) (Back Up Roller)  
1
Sheet Guide  
1PP4083-1241P1  
1
Heat Assy  
1YX4083-1200G1  
1YX4083-1200G2  
40116102  
1
1
1
1
1
1
1
1
1
120V  
Heat Assy  
230V  
Heat Assy  
For CHINA  
For KOREA  
For TAIWAN  
Heat Assy  
40116103  
Heat Assy  
40116104  
52  
53  
54  
55  
Stopper Spring  
Caution Label (TR)  
Ferrite Core  
Film Guide  
40034001  
4PB4091-6047P1  
105A1034C0002  
4PP4083-1139P1  
230V  
8 - 5  
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2
1
3
5
4
Figure 8-3 Heat Assy  
8 - 6  
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Table 8-3 Heat Assy  
No.  
1
Part Name  
Part No.  
Q'ty  
1
Remarks  
Heat Roller  
3PB4083-1202P1  
3PB4083-6103P4  
3PB4083-6103P5  
4PB4083-1204P1  
4PB4083-1205P1  
4PB4083-1213P1  
2
Halogen Lamp  
Halogen Lamp  
Thermostat  
Thermistor  
1
120V  
230V  
1
3
4
5
1
1
Heat Cord  
1
8 - 7  
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7
7
7
7
9
3
6
4
8
2
1
Figure 8-4 Base Plate Unit  
8 - 8  
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Table 8-4 Base Plate Unit  
No.  
1
Part Name  
Base Plate Assy  
Part No.  
Q'ty  
1
Remarks  
3PA4083-1135G1  
3PB4083-1251P1  
4YB4049-1853P1  
4YB4049-1854P1  
4YA4121-2516G2  
2
Insulation Sheet  
Power Supply Unit  
Power Supply Unit  
Main Control Board  
(HBMC-2 PCB)  
1
3
1
120V  
230V  
1
4
1
For OP4W Plus  
Without ROM  
For OP4m  
Main Control Board  
(HBMC-3 PCB)  
4YA4121-2516G3  
1
With Mask ROM  
5
6
Program ROM  
Program ROM  
Program ROM  
AC Cord  
4YR4077-1670G1  
40406201  
1
1
1
1
1
1
1
1
1
1
OP4w Plus EPROM  
OP4w Plus EPROM  
For China  
8170649M0002  
3YS4011-1315P1  
3YS4011-1266P1  
3YS4011-1270P1  
40398702  
OP4m MaskROM  
USA (TAIWAN)  
Continental  
U.K.  
7
AC Cord  
AC Cord  
AC Cord  
Australia  
AC Cord  
40483802  
China  
8
9
Insulation Sheet B  
Option RAM Board  
(HBRB-PCB)  
40043001  
4YA4121-2502G005  
OP4m  
8 - 9  
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APPENDIX  
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Appendix A  
LOCAL PRINTING  
(1) The following operation enables the OKIPAGE 4w Plus/4m to print data by itselt.  
<Operation>  
With the cover open, turn on the AC switch and then close the cover. The following print  
patterns are printed.  
A - 1  
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Appendix B  
PARALLEL INTERFACE  
(1) Connector  
• Printer side : 36-pin receptacle  
Type: 57RE-40360-730B-D29A (Daiichi Denshi) or equivalent  
• Cable side : 36-pin plug  
Type: 57-30360 (Daiichi Denshi) or equivalent  
(2) Cable  
• Cable length : 6 feet (1.8 m) max.  
(A Shielded cable composed of twisted pair wires is recommended for noise prevention.)  
B - 1  
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(3) Parallel I/F signals  
Pin No.  
Signal Name  
Direction  
Function (Compatible Mode)  
Parallel data sampling strobe  
1
2
DATA STROBE  
DATA BIT - 1  
DATA BIT - 2  
DATA BIT - 3  
DATA BIT - 4  
DATA BIT - 5  
DATA BIT - 6  
DATA BIT - 7  
DATA BIT - 8  
ACKNOWLEDGE  
BUSY  
→
PR  
3
4
5
↔
PR  
Printer parallel input/output data  
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
←
←
←
←
→
PR  
PR  
PR  
PR  
PR  
Completion of input data reception  
The OKIPAGE 4w is not ready to receive data.  
Paper end detection  
PAPER END  
SELECT  
Select state (Online)  
AUTOFD  
Carriage return control  
-
Not used  
0V  
Grounding for signals  
CHASSIS  
GROUND  
17  
Frame ground  
50 mA max.  
18  
+5V  
←
PR  
19  
:
:
0V  
Grounding for signals  
30  
31  
32  
33  
34  
35  
36  
INPUT PRIME  
→
←
PR  
PR  
Initialization signal  
Paper end or alarm  
Grounding for signals  
Not used  
FAULT  
0V  
-
-
High level (3.3 k  
Ω)  
SELIN  
→
PR  
Data input enable or disable  
• Connector pin arrangement  
B - 2  
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(4) Signal level  
• LOW : 0 V to +0.8 V  
• HIGH : +2.4 V to 5.0 V  
(5) Interface circuit  
a) Receiving circuit  
R = 3.3K  
Ω
(1.0-KΩ  
STROBE)  
R
+5V  
b) Sending circuit  
(Open Collector)  
3.3KΩ  
+5V  
(6) Timing charts  
a) Data receiving timing (compatible mode)  
PARALLEL DATA  
(DATA BITs 1 to 8)  
0.5  
µs min.  
µs min.  
0.5 µs min.  
0.5  
DATA STROBE  
0.5  
µs min.  
0 min.  
0.5  
µs max.  
BUSY  
0 min.  
0 min.  
ACKNOWLEDGE  
0.5  
µs to 10  
µs  
0 min.  
b) INPUT PRIME timing (when the INPUT PRIME signal is enabled)  
50 ms min.  
INPUT. PRIME  
BUSY  
SELECT  
5
µs max.  
0 min.  
ACKNOWLEDGE  
5
µs max.  
0.5  
µs to 10 ms  
B - 3  
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c) Data sending timing (nibble mode)  
ACKNOWLEDGE  
DATA bit 3  
DATA bit 0  
DATA bit 1  
DATA bit 2  
DATA bit 7  
DATA bit 4  
DATA bit 5  
DATA bit 6  
BUSY  
FAULT  
SELECT  
PAPER END  
B - 4  
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AppendixC  
Macintosh INTERFACE (OKIPAGE 4m)  
1) Connector  
• Printer side  
• Cable side  
: 8-pin mini DIN receptacle  
Type TCS7187-01-201 (made by HOSHIDEN) or equivalent  
: 8-pin mini DIN plug  
Type TCP7180-01-110 (made by HOSHIDEN) or equivalent  
2) Cable  
Apple system peripheral-8 cable  
(M0197 LL / B  
: made by Apple)  
3) Interface signal  
Signal Name  
XCLOCK  
Signal Direction  
Pin No.  
Abbreviation  
XCLK  
–
Description  
Transfer clk  
← PR  
1
2
3
4
5
6
7
8
–
Transmit data minus  
Signal ground  
Receive data minus  
Transmit data plus  
–
← PR  
TxD-  
Transmit data minus polarity  
Signal ground  
SG  
→ PR  
RxD-  
TxD+  
Receive data minus polarity  
Transmit data plus polarity  
(Not used)  
← PR  
→ PR  
Receive data plus  
RxD+  
Receive data plus polarity  
4) Timing chart and level  
about 1.2 µS  
5v  
XCLK  
-5v  
5v  
0v  
TXD+  
TXD-  
5v  
0v  
5v  
0v  
5v  
0v  
RXD+  
RXD-  
C - 1  
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5) Connector Pin Arrangement  
8
7
4
6
5
3
2
1
(As viewed from the cable side)  
C - 2  
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Appendix D  
MAINTENANCE UTILITY  
1.  
OUTLINE OF MAINTENANCE UTILITY  
The maintenance utility is an application program that operates on Microsoft Windows 3.1 or  
higher.  
The maintenance utility has the following functions:  
•
•
•
•
•
Transmission of menu setting command to initialize and change setting values  
Printer RAM check  
Test printing  
Printer information display  
Printer EEPROM read/write  
2.  
3.  
ROLE OF MAINTENANCE UTILITY  
The maintenance utility is a collection of command send/receive functions to realize the printer  
maintenance functions.  
For this reason, only servicemen and maintenance personnel can use the maintenance utility.  
This utility cannot be made public for printer end users.  
OUTLINE OF MAINTENANCE UTILITY FUNCTIONS  
The maintenance utility is classified into the following functional units and displayed:  
•
•
•
•
•
•
Engine Menu Setting : Used to display and change engine menu settings.  
Engine Counter  
Printer Status  
Test Print  
Option  
: Used to display and initialize the engine counter.  
: Used to display the printer status.  
: Used to execute test printing.  
: Special function  
About  
: Used to display engine maintenance utility information and printer  
information.  
•
Reload  
: Used to reload menu setting values.  
D - 1  
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4.  
DETAIL OF EACH FUNCTION  
4.1  
Engine Menu Setting  
Engine Menu Setting is used to set, display, and change the following menu items: (See Figure  
D-1.)  
(1) Print Position  
Used to adjust the print start position.  
(2) LED Head Marking No.  
Used to adjust the exposure time of the LED head.  
(3) LED Head Width  
Used to specify the LED head dot count.  
(4) LED Head Wire  
Used to specify whether the data wire of the LED head is 300-1W, one-wire (non-adjustment)  
type or 300-2W two-wire (adjustment) type. (This printer, however, can use only one-wire  
type.) Do not use D600W4.  
(5) Setting or Humidity  
Used to adjust transfer current.  
(6) Head Type  
Do not use in this printer.  
(7) Wait Table  
Do not use in this printer.  
(8) Page Prt  
Do not use in this printer.  
(9) Entry  
Used to reflect the engine menu setting values on the printer.  
(10)Cancel  
Used to clear unreflected items. (Items for which Entry is not specified.)  
Engine Counter  
4.2  
Engine Counter is used to display and initialize the following count values: (See Figure C-1.)  
D - 2  
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(1) Drum Count  
Number of revolutions of mounted EP drum  
(2) Total Drum Count  
Total number of revolutions of EP drum after shipment  
(3) Page Count  
Totalnumberofprintedpagesaftershipmentclickingthe"Reset"buttoncleanseachcounter.  
(4) Reset All  
Used to clear all counters.  
4.3  
4.4  
Printer Status  
Printer Status is used to display the printer status. (See Figure D-1.)  
Test Print  
TestPrintisusedtocheckwhethertheprintercanprintdatanormallyafterthemaintenanceutility  
has terminated. (See Figure D-2)  
4.5  
Option  
Option is used to execute the following functions: (See Figure D-3)  
(1) Printer Engine Reset  
Used to initialize the engine menu and counter.  
(2) EEPROM Upload  
Used to upload EEPROM contents to the file.  
(3) EEPROM Download  
Used to download data from the file to EEPROM.  
(4) Printer RAM Check  
Used to check printer RAM.  
(5) Printer Name Set  
Used to set a printer name, "OKIPAGE 4w" or "OKIPAGE 4w plus".  
(6) User  
Used to set a destination default (ODA, OEL, INTL, INTA). See Figure D-3.  
D - 3  
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4.6  
About  
About is used to display the following information:  
Engine maintenance utility version information  
Printer version information and memory size information  
Printer device ID information  
See figure D-4.  
4.7  
4.8  
Reload  
Reload is used to reload menu setting values.  
Exit  
Clicking the Exit button terminates the maintenance utility.  
D - 4  
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<Engine Maintenance Driver GUI>  
Figure D-1 Main Menu Dialog  
Figure D-2 Test Print Dialog  
D - 5  
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Figure D-3 Option Menu  
D - 6  
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D - 7  
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Oki Data Corporation  
4-11-22, Shibaura, Minato-ku,  
Tokyo 108, Japan  
Tel: (03) 5445-6162 Fax: (03) 5445-6189  
00000000TH  
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