MICROLINE
390/391 TURBO
Printer Handbook
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Important Safety Instructions
Your OKI printer has been carefully designed to give you years of safe, reliable per-
formance. As with all electrical equipment, however, there are a few basic precau-
tions you should take to avoid hurting yourself or damaging the unit:
• Read the setup and operation instructions in this manual carefully. Be sure to
save it for future reference.
• Read and follow all warning and instruction labels on the printer itself.
• Unplug the printer before you clean it. Use only a damp cloth; do not use liquid
or aerosol cleaners.
• Place your printer on a firm, solid surface. If you put it on something unsteady,
it might fall and be damaged; if you place it on a soft surface, such as a rug, sofa,
or bed, the vents may be blocked, causing it to overheat.
• To protect your printer from overheating, make sure no openings on the printer
are blocked. Don’t put the printer on or near a heat source, such as a radiator or
heat register. If you put the printer in any kind of enclosure, make sure it is well
ventilated.
• Do not put anything into the ventilation slots on the sides of printer, you could
get a shock or cause a fire.
• The printhead can get quite hot when it has been printing for a length of time.
Do not touch the printhead untill it has had a chance to cool off.
• Do not use your printer near water, or spill liquid of any kind into it.
• Be certain that your power source matches the rating listed on the back of the
printer. If you’re not sure, check with your dealer or with your local power com-
pany.
• Your printer has a grounded plug as a safety feature, and it will only fit into a
grounded outlet. If you can’t plug it in, chances are you have a non-grounded
ontlet; contact an electrician to have it replaced with a grounded outlet. Do not
use an adapter to defeat the grounding.
• To avoid damaging the power cord, don’t put anything on it or place it where it
will be walked on. If the cord becomes damaged or frayed, replace it immedi-
ately.
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• If you’re using an extension cord or power strip with the printer, make sure that
the total of the amperes required by all the equipment on the extension is less
than the extension’s rating. Generally, the total ratings of all equipment plugged
into any one power line should not exceed 15 amperes. Don’t exceed this unless
you know that the power line your equipment is plugged into has a rating above
15 amperes.
• Aside from the routine maintenance described in this handbook, don’t try to
service the printer yourself; opening the cover may expose you to shocks or
other hazards. Don’t make any adjustments other than those outlined in the
manual – you might cause damage requiring extensive repair work.
• If anything happens that indicates that your printer is not working properly or
has been damaged, unplug it immediately and follow the procedures in Chap-
ter 5. These are some of the things to look for:
The power cord or plug is frayed or damaged.
Liquid has been spilled into the housing, or the printer has been exposed to
water.
The printer has been dropped or its cabinet has been damaged.
The printer doesn’t function normally when you’re following the operating
instructions.
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ontents
C
Introduction ............................................................................................................. 1
Chapter 1: Installation ........................................................................................... 3
Unpacking ...................................................................................................................3
Removing Shipping Retainers........................................................................4
Installing Ribbon Cartridge ......................................................................................5
Making Connections ..................................................................................................6
Connection with Computer ............................................................................6
Connection with Power...................................................................................8
Chapter 2: Loading Paper ...................................................................................... 9
Loading Single-Sheet Paper .................................................................................... 11
Loading Rear-Feed Paper ........................................................................................14
Paper Handling.........................................................................................................19
Tear Feature.....................................................................................................19
Forms Tear-off Feature ..................................................................................20
Paper Park Feature.........................................................................................20
Switching Paper Paths...................................................................................21
Chapter 3: Operation ............................................................................................ 23
Control Panel.............................................................................................................23
Print Mode.................................................................................................................25
Indicator Lights ..............................................................................................25
Buttons .............................................................................................................26
Menu Mode ...............................................................................................................30
Sample Menu ..................................................................................................31
Summary of Menu Settings ..........................................................................32
Menu Mode Indicator Lights .......................................................................34
Menu Mode Buttons ......................................................................................34
Resetting Menu to Factory Defaults ............................................................35
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Performing Basic Tasks ............................................................................................36
Selecting Print Quality ..................................................................................36
Selecting Character Pitch ..............................................................................37
Testing Your printer .......................................................................................39
Resetting Top of Form ...................................................................................42
Using Bar codes ..............................................................................................42
Chapter 4: Working with Software................................................................... 47
Basic Terminology ....................................................................................................47
Printer Commands.........................................................................................47
Emulations ......................................................................................................48
Printer Drivers ................................................................................................48
Compatible Printer Drivers ..........................................................................49
Chapter 5: Ploblem Solving, Maintenance, & Service................................... 51
Problem Solving .......................................................................................................51
Maintenance ..............................................................................................................54
Replacing the Ribbon Cartridge...................................................................54
Clearing Paper Jams ......................................................................................57
Cleaning the Housing ....................................................................................61
Accessories ................................................................................................................62
Replacement Parts..........................................................................................64
Appendix A: Specifications ................................................................................ 65
Appendix B: Menu Selections............................................................................ 69
Explanation of Menu Items .....................................................................................72
Appendix C: Commands–Epson Emulation.................................................... 79
Appendix D: Commands–IBM Emulation ...................................................... 97
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Appendix E: ASCII Character Codes .............................................................. 113
ASCII Character Sets .............................................................................................. 113
Superscript/ Subscript Characters ...................................................................... 117
Appendix F: Interfacing .................................................................................... 119
Pin Assignments for Parallel Interface Signals ..................................................119
Installing the Serial Interface ................................................................................120
Pin Assignments for Serial Interface Signals ......................................................122
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ntroduction
I
This Guide is arranged to help you get your new MICROLINE 390 Turbo or 391 Turbo
printer set up and running quickly as well as providing you with more detailed infor-
mation for future reference. Here’s how it’s organised:
• Chapter 1 (Installation) shows you how to get your printer ready to run and
how to connect it to your computer.
• Chapter 2 (Loading Paper) explains how to load paper for any of the two meth-
ods of paper feed.
• Chapter 3 (Operation) describes how to control your printer from the front panel.
It also explains how to change the defaults, how to test your printer and how to
use bar codes.
• Chapter 4 (Working with Software) gives you information on selecting a driver
and installing your printer on popular software packages.
• Chapter 5 (Problem Solving/ Maintenance/ Service) gives helpful hints on how
to solve common printer problems and how to maintain your printer in tip-top
shape.
• Appendices A through E contain a variety of reference material, including speci-
fications, menu listings, lists of printer programming commands and ASCII
characters.
ML390/391 Turbo Printer Handbook
1
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2
Introduction
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hapter 1: Installation
C
This chapter explains how to unpack and install your new printer.
Unpacking
Unpack your printer and make sure you have the following items. If you are missing
any of these items, contact your dealer immediately for a replacement.
• Printer
• Ribbon cartridge
• AC cord
It is not included in case of
some models.
• Printer handbook.
Interface cable and paper are sold
separately.
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Removing Shipping Retainers
1. Open access cover by grasping tabs at
either end and lifting.
Tab
2. Remove printhead shipping retainer
(leave cover open for installation of rib-
bon).
Shipping retainer
4
Installation
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knob
Paper separator
3. Hold the knob and remove the paper
separator.
”∆”mark
4. Remove the protective material.
Paper
separator
Protictive
material
5. Set and attach the post to the“∆”mark
of the upper cover and the paper sepa-
rator.
”∆”mark
Protictive
material
6. Remove the protective material from
the pull-up roller assembly.
Pull-up roller
assembly
Installing Ribbon Cartridge
1. With access cover open, grasp print-
head and slide it until it is centered on
platen.
Center
printhead
on platen
2. Remove ribbon cartridge from its pack-
aging.
Important! Leave the clear plastic rib-
bon shield on the cartridge!
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3. Holding ribbon cartridge with knob fac-
ing up and ribbon sheild facing platen,
fit grooves on either side at back end of
cartridge over pins on ribbon plate.
Ribbon
shield
Knob
4. Lower front of cartridge over printhead
until it snaps into place, then turn knob
in direction of arrow (clockwise) to take
up ribbon slack.
Headgap lever
Number of
sheets
Setting
position
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5. The headgap lever by the side of cartridge
adjusts for different paper thicknesses.
Set it for the number of sheets in the
forms you’re using from 1 to 4; use set-
ting 5 for envelopes or extra-thick pa-
per. Adjust the setting up or down for
the best print quality.
envelopes or
extra-thick paper
Note: When the setting is set at 2~5, the
printer automatically slows down for better
print quality with thicker multipart forms.
1
2
3
4
5
Printhead
Knob
Important! Be sure to use only ribbons
specifically for use with MICROLINE 390
series.
Headgap lever
For best results, use genuine OKI ribbons.
Making Connections
Connection with Computer
There instructions are for the standard parallel interface. Instructions for installa-
tion/ connection of a serial interface are included with the serial interface accessory.
For more information on the serial interface accessory, see Chapter 5.
6
Installation
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Pin assignments for both the parallel and the serial interfaces are listed in
appendix E.
You must supply the cable for connecting your printer to your computer.
1. Make sure both printer and computer
are OFF.
2. Locate interface port on back of printer.
Interface port
3. Plug parallel interface cable into port
and secure it in place with wire loops.
Wire
loops
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Connection with Power
1. Make sure both printer and computer
are OFF.
2. Plug power cord into back of printer.
Plug other end into grounded outlet.
Power cord
Socket
3. Turn printer on. Printhead will cross
back and forth along p laten, and
POWER light will come on. ALARM
light will also come on, but don’t be
concerned: it’s just telling you that there
is no paper loaded.
SEL
SEL
MENU
SHIFT
EXIT
POWER
ALARM
Power light
Alarm light
You’re now ready to load paper—proceed
to Chaper2.
8
Installation
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hapter 2: Loading Paper
C
Your printer has provision for single-sheet paper feed from the top and for continu-
ous-form paper feed from the rear. You can also install options: the Cut Sheet Feeder,
which holds a stack of 100 sheets for feeding from the top and the Push and/ or Pull
Tractors for feeding continuous-form labels, heavy card stock or multi-part forms
from the bottom. See Chapter 5 for more information on these options.
Top Feed
• Single sheets (basis weight 14 to 24 lbs)
• Single envelopes
– 24-lb maximum
– 6.5” to 9.5” wide
• Transparencies (8.5 x 11”)
Rear feed (continuous forms only, thickness to 0.014” [0.36 mm])
• Single-part continuous forms
– 12 to 24 lb.
– Minimum 3” wide
• Carbonless, multi-part forms
– Original, plus 3 copies
– 9 to 11 lb
– Minimum 3” wide
• Interleaf, multi-part forms (with carbon paper)
– Original, plus 3 copies
– 10 to 12 lb paper, with 9 lb carbon
– Minimum 3” wide
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Bottom feed (continuous forms only, thickness to 0.017” [0.44mm])
• Single-part continuous forms
– 12 to 24 lb
– Minimum 3” wide
• Carbonless, multi-part forms
– Original, plus 4 copies
– 9 to 11 lb
– Minimum 3” wide
• Interleaf, multi-part forms (with carbon paper)
– Original, plus 4 copies
– 10 to 12 lb paper, with 9 lb carbon
– Minimum 3” wide
• Continuous-feed envelopes
– 24 lb maximum
– 6.5” to 9.5” wide (envelope itself)
• Labels
– minimum 3” wide
– maximum 10”(ML390 Turbo) or 16” (ML391 Turbo) wide
• Card stock: papers up to 120 lb maximum
10
Loading Paper
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Loading Single-Sheet Paper
The single-sheet paper path is best for letterhead stationery, memos, and envelopes.
We also recommend it for printing graphs and charts because it provides the most
accurate control of the paper.
To load in single sheets of paper:
If you have any continuous-form paper in the paper path, you must press the
PARK button on the front panel to remove it from the path before lading single
sheets.
1. Make sure printer is turned ON and
SEL light
deselected (SEL light off – press SEL
button to deselect it necessary).
SEL
The ALARM light will remain on
until paper is loaded.
SEL
MENU
SHIFT
EXIT
POWER
ALARM
2. Move paper lever to position marked
“TOP”.
Move
to "TOP"
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3. Grasp back of paper separator and un-
snap it from housing, then swing it up
into single-sheet feed position, making
sure that wire feed guide is nestled in
separator.
Paper
separator
Wire feed
guide
Paper feed
guides
4. Adjust paper feed guides for width of
paper and drop sheet of paper into
separator. Paper will automatically
feed into printer.
If the sheet of paper doesn’t feed in
properly, the “15” light in the Char-
acter Pitch section at the bottom
right of the control panel will be-
gin flashing. To correct this, press
the SHIFT and RESET buttons si-
mult a neously, t hen reloa d t he
sheet.
Flashes
SHIFT
CHARA
15
PROP
RESET
ALARM
Press
12
Loading Paper
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5. Baseline for Top of Form (TOF) on pa-
per is indicated by red line on clear plas-
tic paper shield.
Baseline
1
2
3
4
5
6. If desired, change TOF setting using
control panel:
Press to feed
paper down in
micro increments
Hold
SEL
☛ to set TOF further down on page,
hold SHIFT button while pressing FF/
LOAD button: this will advance paper
up in micro increments
SEL
LF
FF/LOAD
Micro Feed
Down
Micro Feed
Up
MENU
SHIFT
EXIT
GROUP
ITEM
☛ to move TOF further up on page,
hold SHIFT button while pressing LF
button: this will advance paper down
in micro increments
POWER
ALARM
Press to feed
paper up in micro
increments
7. Press SEL button (SEL light will come
on).
SEL
SEL
MENU
EXIT
POWER
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Loading Rear-Feed Paper
The rear-feed paper path is recommended for single-thickness, continuous fan-fold
paper when printing spreadsheets, long reports, etc. For graphics or charts, it’s best to
use the single-sheet paper path.
To load continuous-form paper from the rear:
1. If you have paper in paper path, be sure
to remove it before installing rear-feed
paper. To remove single sheet, press FF/
LOAD button. To remove bottom-feed
paper, press PARK button.
2. Move paper lever to position marked
“REAR”.
Position
"Rear"
3. Open the access cover, hold up the knob
Knob
Remove
paper
separator
of the paper separator, and remove the
paper separator.
(Remove the paper separator.)
14
Loading Paper
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4. Locate tractors.
Tractors
5. Pull up on lock levers to release trac-
tors and swing open tractor covers. Po-
sition right-hand tractor for width of
paper you’re loading.
Lock lever
Tractor cover
The movement of the left tractor is
limited to ensure that the paper
will always contact the paper sen-
sor when loaded.
6. Pull paper, and place first two holes on
each side over tractor pins.
Please note that an equal number of pa-
per holes must be engaged on either
tractor in order to ensure proper paper
feed.
Paper holes on pins
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7. Close tractor covers and adjust left trac-
tor to position edge of paper: reference
marks on printer indicate left edge po-
sition for the two most common paper
sizes. When paper is properly aligned,
lock left tractor in place by pushing back
on lock lever.
8. Adjust right tractor so that paper holes
are centered on pins(careful – if paper
is stretched too tight or left too loose, it
can jam and cause problems), then lock
right tractor in place by pushing back
on lock lever.
Lock lever
Tractor covers
Reference marks
9. Set Paper separator and swing wire feed
guide over to rest on pull-up roller as-
sembly to prevent from curling back
into printer.
Wire feed guide
10.Push FF/ LOAD button. Paper will au-
tom atically feed into p rinter and
ALARM light will go out.
FF/LOAD
Micro Feed
Up
ITEM
16
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11.Baseline for top of Form(TOF) on pa-
per is indicated by red line on clear plas-
tic paper shield.
Baseline
1
2
3
4
5
12.If desired, change TOF setting using
control panel:
Press to hold the
paper before
releasing the TEAR
button.
Press to bring
the paper down
to the print
If form tear off is being selected in the
printer menu, press the TEAR button
to bring the paper down to the print
position. Hold down the SHIFT button
and release the TEAR button.
position.
LF
FF/LOAD
TEAR
SET
Micro Feed
Micro Feed
Up
SHIFT
Down
☛ to set TOF further down on page,
hold SHIFT button while pressing FF/
LOAD button: this will advance paper
up in micro increments
GROUP
ALARM
ITEM
MENU
Press to feed
paper down in
micro increments
☛ to move TOF further up on page,
hold SHIFT button while pressing LF
button: this will advance paper down
in micro increments
Hold
SEL
SEL
LF
FF/LOAD
Micro Feed
Down
Micro Feed
Up
MENU
SHIFT
EXIT
GROUP
ITEM
POWER
ALARM
Press to feed
paper up in micro
increments
ML390/391 Turbo Printer Handbook
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13.Press SEL button (SEL light will come
on).
SEL
SEL
MENU
EXIT
POWER
To temporarily change the Top of
Form setting for a particular print
job, deselect the printer and press
the LF button until you reach the
TOF position you want to use. The
printer will retain this setting un-
til you turn it off.
LF
Micro Feed
Down
GROUP
18
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Paper Handling
Your printer has several handy paper handling features:
• Tear
• Form Tear-off
• Paper Park
Tear Feature
When you’re using continuous forms with either the built-in rear-feed tractor or the
optional bottom-feed push tractor, you can use this feature to advance the forms up to
the tear position so you can easily tear off a printed sheet without wasting paper or
readjusting the printer. To do this, simply press the TEAR button on the front panel.
Press
SEL
SEL
LF
FF/LOAD
TEAR
SET
PARK
PRINT
QUIET
TOF
Micro Feed
Down
Micro Feed
Up
MENU
SHIFT
EXIT
GROUP
ITEM
POWER
ALARM
MENU
The tear feature can not be used when the optional pull tractor is installed.
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Forms Tear-off Feature
Caution! Do not engage Forms Tear-off when printing on labels!
The Forms Tear-off feature can be engaged to automatically move the paper up to the
tear position after the selected interval (500 milliseconds, one second, or two seconds).
The page will stay in the tear-off position until the printer receives data. It will then
move down to the initial printing position.
This feature is normally turned off. To activate it, enter the printer menu (see Menu
Mode in Chapter3) and choose one of the intervals.
Some programs, such as high resolution graphics packages, pause occasion-
ally while sending data to the printer. If the pause lasts more than the selected
interval, the paper will advance to the rear-off position until more data is
received. No data will be lost, but this extra paper movement can cause un-
even print registration in graphics. If you have this problem, use the menu to
deactivate Forms Tear-off.
Paper Park Feature
If you have continuous-form paper loaded and you wish to switch to another paper
path, first tear off the printed pages, then simply press the PARK button. The continu-
ous-form paper will immediately retract from the paper path.
Press
SEL
SEL
LF
FF/LOAD
TEAR
SET
PARK
PRINT
QUIET
TOF
Micro Feed
Down
Micro Feed
Up
MENU
SHIFT
EXIT
GROUP
ITEM
POWER
ALARM
MENU
20
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Switching Paper Paths
To switch from continuous-form feed from the rear or bottom (optional push or pull
tractor installed) of the printer to single-sheet feed from the top:
1. Tear off printed pages.
2. Press PARK button.
3. Swing wire guide up into paper separator, then pivot separator to upright posi-
tion.
4. Move paper lever to position marked “TOP”.
5. Load single sheet paper into paper separator.
To switch from top feed to continuous-form tear or bottom (optional push or pull
tractor installed) feed:
1. Make sure no sheet is in paper path (press FF/ LOAD to remove single sheet from
path).
2. Lower paper separator to continuous forms position and swing wire guide over
onto pull-up roller assembly.
3. Move paper lever to position marked “REAR” or “BOT”, as appropriate.
4. Press FF/ LOAD button. Continuous-form paper will advance into print position.
ML390/391 Turbo Printer Handbook
21
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22
Loading Paper
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hapter 3: Operation
C
This chapter explains how to operate your printer. It also provides instructions on
how to change the default settings and how to perform basic tasks, including select-
ing typeface/ print quality, selecting character pitch, testing your printer, and reset-
ting Top of Form to the factory default.
Control Panel
PRINT QUALITY
LQ
COURIER
GOTHIC
ORATOR
SEL
–ROMAN–
UTILITY
PRESTIGE
SEL
LF
FF/LOAD
TEAR
SET
PARK
PRINT
QUIET
TOF
–SWISS–
Micro Feed
Down
Micro Feed
Up
MENU
SHIFT
CHARACTER PITCH
10
12
20
15
EXIT
GROUP
ITEM
17
PROP
POWER
ALARM
MENU
RESET
Your printer ’s front panel lets you control paper feeding, customize your printer’s
defaults to your particular needs, and select print quality and character pitch.
Here’s a breakdown of the controls on the front panel:
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SEL
SEL
LF
FF/LOAD
TEAR
SET
PARK
PRINT
QUIET
TOF
Micro Feed
Down
Micro Feed
Up
MENU
SHIFT
EXIT
GROUP
ITEM
POWER
ALARM
MENU
The seven buttons to the left on your control panel are multi-function buttons. In
routine printer operation, they are used to manipulate the paper, but you can also use
them to enter and make changes in the printer ’s program menu.
PRINT QUALITY
LQ
COURIER
GOTHIC
ORATOR
–ROMAN–
UTILITY
PRESTIGE
–SWISS–
CHARACTER PITCH
10
12
20
15
17
PROP
RESET
The PRINT QUALITY and CHARACTER PITCH sections at the right on the front
panel are used to select the quality and size of the printing. See “Performing Basic
Tasks” later in this chapter for information on how to use these buttons.
Important! The print quality and character pitch set by means of the front panel can
be overridden by commands sent by the commercial software package from which
you’re printing a document. If you run into this problem, see Chapter 5 for informa-
tion on how to correct it.
24
Operation
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Print Mode
In its normal operating state, your printer’s front panel is in the Print Mode.
Indicator Lights
In the Print Mode, your printer has the following lights to indicate its status:
2
4
PRINT QUALITY
LQ
COURIER
GOTHIC
ORATOR
SEL
–ROMAN–
UTILITY
PRESTIGE
SEL
LF
FF/LOAD
TEAR
SET
PARK
PRINT
QUIET
TOF
–SWISS–
Micro Feed
Down
Micro Feed
Up
MENU
SHIFT
CHARACTER PITCH
10
12
20
15
EXIT
GROUP
ITEM
17
PROP
POWER
ALARM
MENU
RESET
1
3
1. POWER light: Glows whenever printer is on.
2. SEL light: Glows when printer is selected, ready to receive data. Flashes when
printer is in print suppress mode. Goes out when printer is deselected (can’t re-
ceive data).
3. ALARM light: Glows when error condition exists, such as out of paper or paper
jam. Also glows when paper lever is set to wrong position.
Important! If the ALARM light is blinking, an unrecoverable error condition exists.
Try turning the printer off, then on again; if the light is still flashing, contact your
service dealer (see Chapter 5 for more information on obtaining service).
4. QUIET light: Glows when printer is in QUIET state (printer selected or deselected).
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Buttons
SEL
SEL
LF
FF/LOAD
TEAR
SET
PARK
PRINT
QUIET
TOF
Micro Feed
Down
Micro Feed
Up
MENU
SHIFT
EXIT
GROUP
ITEM
POWER
ALARM
MENU
When the printer is selected (SEL light on), only the functions marked at the top of the
bank of buttons (LF, FF/ LOAD, TEAR, PARK, QUIET) are in effect. When the printer
is deselected (SEL light off), the functions marked at the bottom of the buttons (Micro
Feed Down, Micro Feed Up, TOF) can be accessed by means of the SHIFT button.
Each button can have several functions, depending on the mode in use (Print Mode
or Menu Mode), on whether or not the printer is selected and on whether or not the
optional Cut Sheet Feeder (CSF) is installed. Most buttons also have a different func-
tion if they are pressed while the printer is being turned on. In addition, different
combinations of two buttons can be used to access functions.
The various function available for each button are summarized in the table below.
The PRINT QUALITY and CHARACTER PITCH buttons are discussed under
“Performing Basic Tasks,” later in this chapter.
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Summary of Front Panel Button Functions
Button
Print Mode
Help on Power Up With CSF Installed
Menu Mode
SEL
Selects/ deselects printer. Activates Menu Same as Print
Resets Paper
Out Alarm.
Resets Paper Out of Paper Mode.
Jam Alarm. Also ends Font
Test or Rolling ASCII test .
Mode
SEL +
SHIFT
Activates Menu Mode.
Activates Menu Same as Print
Exits Menu
Mode.
Mode.
Mode
SHIFT With printer deselected: N/ A
used with other keys to set
Same as Print
Mode
N/ A
and store Top of Form.
LF
Advances paper Up one Activates Font
line. Press and hold to ad- Test.
vance by repetitive line
feeds.
Same as Print
Mode
Advances to
next Group in
Menu.
LF+
With printer deselected, Activates Font
Same as Print
Mode
Goes back to
previous
Group in
Menu.
SHIFT moves Top of Form set- Test.
ting up (paper moves
down) on page in micro
increments.
FF/ LOAD Feeds in sheet of paper or N/ A
Inserts or Ejects
Page.
Advances to
next Item in
Menu.
advances
continuous-
form paper to print posi-
tion.
FF/ LOAD With printer deselected, N/ A
+SHIFT moves Top of Form set-
ting down (paper moves
With printer de- Goes back to
selected, moves previous Item
Top of Form set- in Menu.
ting down on
up) on page in micro in-
crements.
page in micro in-
crements.
TEAR
Moves continuous-feed N/ A
paper up for tear-off or
back down for printing
(select/ deselect states).
N/ A
Advances to
next Value in
Menu.
N/ A : Not applicable.
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Button
Print Mode
Help on Power Up With CSF Installed
Menu Mode
TEAR+ Move the print head to Re- N/ A
SHIFT verse.
Move the print
head to Reverse.
Goes back to
previous Value
in Menu.
PARK Parks continuous-form pa- N/ A
per.
Ejects paper.
Prints list of all
Menu settings
for current emu-
lation.
PARK+ Move the print head to N/ A
SHIFT Forward.
Move the print
head to Forward. Group Menu
Setting.
Prints current
QUIET Activates/ deactivates
QUIET mode.
Activates Roll- Activates/ deacti-
ing ASCII Test. vates QUIET mode.
N/ A
QUIET+ Sets Top of Form.
SHIFT
Activates Roll- Sets Top of Form. N/ A
ing ASCII Test.
PRINT Selects next Print Quality N/ A
QUALITY mode.
Selects next Print N/ A
Quality mode.
PRINT Sets/ Resets Incremental N/ A
QUALITY Print mode.
+SHIFT
Sets/ Resets Incre- Prints all Menu
mental Print
mode.
settings, regard-
less of emula-
tion/ options
engaged.
CHARAC- Selects next pitch setting.
N/ A
Selects next pitch N/ A
setting.
TER
PITCH
CHARAC- With printer deselected, N/ A
With printer dese- N/ A
lected, resets
TER
resets printer.
PITCH+
SHIFT
printer.
FF/ LOAD N/ A
+TEAR
Resets Menu
and Top of
Form to factory
default.
N/ A
N/ A
N/ A : Not applicable.
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Button
Print Mode
Help on Power Up With CSF Installed
Menu Mode
N/ A
SEL+LF N/ A
Resets Menu to N/ A
factory default.
QUIET+ N/ A
PARK
Resets Top of
Form to factory
default.
N/ A
N/ A
SEL+
FF/ LOAD
N/ A
Activates hex
dump mode.
N/ A
N/ A
N/ A : Not applicable.
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Menu Mode
When your printer is in the Menu Mode, you can use the front panel controls to change
the defaults for the printer parameters, including emulation, page length, line spac-
ing, typeface, pitch, etc. For example, you might want to change the page length to 14
inches if you’re printing on legal-size documents, or to 3 inches if you’re printing on
labels or small cards.
To place your printer in the Menu Mode, hold the SHIFT button while pressing the
SEL button (printer either selected or deselected). The MENU light will come on and,
if the printer was selected, the SEL light will go out.
To exit the Menu Mode, hold the SHIFT button and press the SEL button. The MENU
light will go out and the SEL light will come on.
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Sample Menu
The menu is made up of groups of parameters. Within each group is a list of items
and each of those items has several possible settings. Here’s a sample Menu printout.
The first column lists the groups; the second, items; the third, settings:
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Summary of Menu Settings
The table below details the entries in the printer Menu as it comes from the factory.
The defaults are in bold face italic type.
Other entries will appear in the Menu depending on what options you have installed
and what emulation is engaged.
For a complete listing of all the available Menu selections, along with explanations for each
setting, see appendix B.
Group
Item
Setting
Printer Control Emulation Mode
Epson LQ, IBM PPR, IBM AGM
Font
Print Mode
LQ Courier, LQ Roman, LQ Swiss, LQ
Swiss Bold, LQ Orator, LQ Gothic, LQ
Prestige, Utility
Pitch
10 cpi, 12 cpi, 15 cpi, 17.1 cpi, 20 cpi
No, Yes
Proportional Spacing
Style
Size
Normal, Italics
Single, Double
Symbol Sets
Character Set
Language Set
Set I, Set II
American, French, German, Britishi, Dan-
ish I, Swedish, Italian, Spanish I, Japanese,
Norwegian, Danish II, Spanish II, Latin
American, French Canadian, Dutch, Pub-
lisher
Zero Character
Code Page
Slashed, Unslashed
USA, Canada French, Multilingual, Portu-
gal, Norway, BRASCII, Abicomp
Rear Feed
Line Spacing
6 LPI, 8 LPI
Form Tear-Off
Skip Over Perforation
Page Width*
Off, 500 ms, 1 sec, 2 sec
No, Yes
13.6", 8"
2
Page Length
11", 11 / ", 12", 14", 17", 3", 3.5", 4", 5.5",
3
6", 7", 8", 8.5"
* ML391 Turbo only
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Group
Item
Line Spacing
Setting
Bottom Feed
6 LPI, 8 LPI
Form Tear-Off
Skip Over Perforation
Page Width *
Off, 500 ms, 1 sec, 2 sec
No, Yes
13.6", 8"
2
Page Length
11", 11 / ", 12", 14", 17", 3", 3.5", 4", 5.5",
3
6", 7", 8", 8.5"
Top Feed
Line Spacing
Bottom Margin
Page Width *
Page Length
6 LPI, 8 LPI
Valid, Invalid
13.6", 8"
2
11", 11 / ", 12", 14", 17", 3", 3.5", 4", 5.5", 6",
3
7", 8", 8.5"
Wait Time
1 sec, 2 sec, 500ms
Page Length Control
by Menu Setting, by Actual Page Length
Set-Up
Graphics
Uni-directional, bi-directional
Receive Buffer Size
Paper Out Override
Print Registration
8K, 1 Line, 23K
No, Yes
0, 0.05 mm Left, 0.10 mm Left, 0.15 mm Left,
0.20 mm Left, 0.25 mm Left, 0.25 mm Right,
0.25 mm Right, 0.15 mm Right, 0.10 mm Right,
0.05 mm Right
Full Operation, Limited Operation
No, Yes
Operator Panel Function
Reset Inhibit
Print Suppress Effective
Auto LF
Auto CR *
Yes, No
No, Yes
No, Yes
17.1 CPI, 15 CPI
20 CPI, 12 CPI
Valid, Invalid
No, Yes
1
1
SI Select Pitch (10 CPI) *
1
SI Select Pitch (12 CPI) *
Time Out Print
Auto Select
Graphics Speed
Centering Position
CSF Type *
Low, High
DEFAULT, MODE 1, MODE 2
Wide, Narrow
Parallel I/ F
I-Prime
Pin 18
Auto Feed XT *
Buffer Print, Buffer Clear, Invalid
+5V, Open
Invalid, Valid
2
* ML391 Turbo only
1
* IBM mode Only
2
* EPSON mode Only
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Menu Mode Indicator Lights
In the Menu Mode, the following lights indicate your printer’s status:
PRINT QUALITY
LQ
COURIER
GOTHIC
SEL
–ROMAN–
UTILITY
PRESTIGE
ORATOR
SEL
LF
FF/LOAD
TEAR
SET
PARK
PRINT
QUIET
TOF
–SWISS–
Micro Feed
Down
Micro Feed
Up
MENU
SHIFT
CHARACTER PITCH
10
12
20
15
EXIT
GROUP
ITEM
17
PROP
POWER
ALARM
MENU
RESET
1
2
1. POWER light: Glows when printer is on.
2. MENU light: Glows when printer is in Menu Mode.
Menu Mode Buttons
SEL
SEL
LF
FF/LOAD
TEAR
SET
PARK
PRINT
QUIET
TOF
Micro Feed
Down
Micro Feed
Up
MENU
SHIFT
EXIT
GROUP
ITEM
POWER
ALARM
MENU
1
2
3
4
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Here is a summary of the buttons active in the Menu Mode:
1. GROUP button: Press to scan through groups of listings. Each time you press the
GROUP button, a line will print, showing the next group in the Menu. To go back
one group, hold the SHIFT button while pressing the GROUP button.
2. ITEM button: Press to scan through items for a particular group. Each time you
press the ITEM button a line will print, showing the next item within the group. To
go back one item, hold the SHIFT button while pressing the ITEM button.
3. SET button: Press to change setting for the items. Each time you press the SET
button, a line will print across the page showing the next setting for that item.
Keep pressing the button until the setting you wish to engage appears. To go back
one setting, hold the SHIFT button while pressing the SET button.
4. PRINT button: Press to print out listing of current settings for each items, group
by group.
Resetting Menu to Factory Defaults
To reset your printer Menu to the factory settings, turn the printer off, then hold the
SEL and LF buttons while turning it back on again.
Hold while turning printer on
SEL
SEL
LF
FF/LOAD
TEAR
SET
PARK
PRINT
QUIET
TOF
Micro Feed
Down
Micro Feed
Up
MENU
SHIFT
EXIT
GROUP
ITEM
POWER
ALARM
MENU
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Performing Basic Tasks
Selecting Print Quality
PRINT QUALITY
LQ
COURIER
GOTHIC
ORATOR
–ROMAN–
UTILITY
PRESTIGE
–SWISS–
Print quality button
Your printer allows you to select from two print qualities: utility and letter quality
(LQ), Utility printing is in the Gothic typeface. The LQ printing is of noticeably higher
quality and offers you a choice of six typefaces: Courier, Gothic, Prestige, Orator, Ro-
man and Swiss. To select the print quality/ typeface you want, keep pressing the
PRINT QUALITY button until the lights are lit beside the combination you want. The
LQ Roman and LQ Swiss typefaces are selected when the lights on either side are
both lit.
For example, to select the LQ Roman typeface, press the PRINT QUALITY button
until the following lights appear:
Your printer also prints any of eight different bar codes accessible through
printer commands. For more information on bar codes, see the end of this chap-
ter.
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Selecting Character Pitch
CHARACTER PITCH
10
12
20
15
17
PROP
RESET
Character Pitch button
The character pitch determines the width of the individual characters and is mea-
sured in characters per inch (cpi). To select the character pitch, press the CHARAC-
TER PITCH button successively until the light underneath the pitch you wish to en-
gage is lit (10 cpi, 12cpi, 15cpi, 17cpi, 20cpi, or Proportional).
To reset the pitch to the user default (Menu Setting):
1. Be sure printer is deselected (SEL light out). If not, press SEL button.
2. Hold SHIFT button while pressing CHARACTER PITCH button.
If the SI command is received from your software, the character pitch selected
on the control panel will be overridden by the SI command.
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The table below summarizes the fonts available from your printer:
Typeface
LQ Courier
Spacing
Style
10 cpi
12 cpi
Normal, superscript, subscript
Normal, superscript, subscript
Normal, superscript, subscript
Normal
Proportional
8 point
LQ Letter Gothic
LQ Prestige
LQ Orator
10 cpi
12 cpi
Proportional
Normal
Normal
Normal
10 cpi
12 cpi
Proportional
Normal
Normal
Normal
10 cpi
12 cpi
Proportional
Normal
Normal
Normal
LQ Roman
10 cpi
12 cpi
Proportional
8 point
Normal, superscript, subscript
Normal, superscript, subscript
Normal
Normal
LQ Swiss
10 cpi
12 cpi
Proportional
8 point
Normal, superscript, subscript
Normal, superscript, subscript
Normal
Normal
LQ Swiss Bold
10 cpi
12 cpi
Proportional
Normal
Normal
Normal
Utility Gothic
Barcode
10 cpi
12 cpi
Normal, superscript, subscript
Normal, superscript, subscript
Code 39
N/ A
UPC A, UPC E, EAN 8,
EAN 13, Interleaved 2 of
5, Code 128, Postnet
Scalable fonts'
11 point~ 64 point
Normal
(LQ Courier, LQ
Roman< LQ Swiss)
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Testing Your printer
Your printer has three your can run: the Font Test, the Rolling ASCII Test, and the
Hexadecimal Dump Test.
Font Test
The Font Test provides a printout containing samples of available typefaces. Here’s a
portion of a Font Test printout:
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To run the Font Test:
1. Be sure paper is loaded.
2. Turn off printer.
3. Hold LF button for several seconds while turning printer on. (IF printer simply
turns on without starting to print, you didn’t hold down LF button long enough.)
Rolling ASCII Test
The Rolling ASCII Test produces a continuous printout of all ASCII characters. The
printing will continue until you stop it manually by pressing the SEL button. Here’s a
sample portion of a Rolling ASCII Test:
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To activate the Rolling ASCII Test:
1. Be sure paper is loaded.
Caution! For wide carriage Model 391 Turbo, be sure you have wide paper loaded!
2. Turn off printer.
3. Hold QUIET button for several seconds while turning printer on. (If printer sim-
ply turns on without starting to print, you didn’t hold down QUIET button long
enough.)
Hexadecimal Dump Test
If you want to test the data your computer is sending to the printer, you can place the
printer in the Hexadecimal Dump Mode. When the printer is in the Hex Dump Mode,
all data received, including text and printer commands, will be printed in both hexa-
decimal and ASCII format.
In the ASCII format, all non-printable characters will be represented by a pe-
riod.
For example, this line of BASIC code:
LPRINT CHR$ (27);“0”;CHR$ (30);“This is an example of a hexadecimal
dump.”
would print like this:
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To engage the Hexadecimal Dump Mode:
1. Be sure paper is loaded.
2. Turn off printer.
3. Hold SEL and FF/ LOAD buttons for several seconds while turning on printer.
The printer will print the line “Hex Data Dump” and be ready to receive data in the
Hexadecimal Dump Mode. To run the test, simply send data to the printer while it is
in the Hexadecimal Dump Mode.
When you’re done, you can exit the Hexadecimal Dump Mode by either pressing the
SEL button or by turning the printer off, then on again.
Resetting Top of Form
To reset the Top of Form to the factory default:
1. Turn off printer.
2. Hold down QUIET and PARK buttons while turning printer back on.
Using Bar codes
Your MICROLINE 390/ 391 Turbo printer incorporates eight different bar codes:
• UPC A
• UPC E
• EAN 8
• EAN 13
• Code 39
• Code 128
• Interleaved 2 of 5
• Postnet
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You will find a list of the bar code printer commands for each emulation in appendix
C.
Here is a brief explanation of each of the available bar codes, along with a sample
printout for each one.
UPC A Bar Code
UPC (Universal Product Code) bar coding is used in the supermarket industry. UPC
A coding contains ten digits: the first five digits represent the manufacturer, the sec-
ond five digits identify the product.
UPC E
UPC E bar coding is a six-digit variation of UPC A, used for labeling small items.
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EAN 8
EAN (European Article Numbering) bar coding is a variation of UPC coding. EAN 8
encodes eight digits.
EAN 13
EAN 13 encodes 13 digits and contains the same number of bars as UPC A. The thir-
teenth digit combined with the twelfth digit provides a code representing a country.
Code 39
Also known as 3 of 9 Code, code 39 is used in non-retail applications. Each character
has five bars and four spaces. Code patterns have been developed for 44 different
alphabetic, numeric and graphic characters.
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Code 128
Code 128 has 106 different characters, each of which can have any one of three differ-
ent meanings depending on which code set (A, B, or C) is engaged. A special code at
the beginning indicates which set is engaged: three shift codes are also available for
use within the bar code to indicate a change in the code set engaged, as required.
Interleaved2 of 5
Inerleaved2 of 5 bar coding is used mainly in the distribution industry. Two digits are
encoded: one in the bars and one in the spaces.
Postnet
Postnet bar coding is used by the U.S. Post Office for sorting mail by automated equip-
ment. It incorporates a coding system using five bars and four spaces for each digit.
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hapter 4: Working with Software
C
This chapter covers the fundamentals of setting up commercial software packages for
use with your printer. Be sure to read your software documentation carefully for more
details.
Basic Terminology
Before we start, let’s examine a few terms with which you may not be familiar.
Printer Commands
If you’re using commercial software with an appropriate printer driver (see
“Printer Drivers” below), the printer commands will normally be sent to the
printer by your software and you won’t even need to think about them.
Printer commands are signals sent by your PC to the printer which guide and control
its operation. Printer commands tell the printer what character pitch to use, what font
to use, what margins to use, whether to use single or double spacing, when to en-
gage/ disengage double width or double height printing, etc.
Printer commands can be sent in decimal, ASCII, or hexadecimal form. The values
(decimal/ ASCII/ hexadecimal) for each type of command depend on which emula-
tion is active (see Appendix C for a listing of printer commands for each emulation).
With only a few exceptions, printer commands begin with the ESC character, decimal
27 (hexadecimal 1B), which serves as signal to the printer that what follows is to be
interpreted as a command rather than just a string of characters. Some printer com-
mands expect you supply a numerical value, representing tab stops, line spacing, etc.
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Emulations
In order to eliminate hundreds of different sets of printer commands, most printers
emulate, or imitate, one of several general printers; i.e., they accept all of that printer’s
commands and behave as though they were the emulated printer.
Your printer has three emulations:
• IBM Proprinter
• IBM AGM
• Epson LQ (factory default)
Printer Drivers
Most of the time, your printer will be controlled by standard commercial software
packages such as Lotus® 1-2-3®, WordPerfect®, and Microsoft® Windows.
Commercial software packages use printer driversto control the appearance of printed
documents. A driver is simply a list of printer commands tailor-made to cause the
printer to perform various functions at the request of the software, producing docu-
ments with the correct format. The availability of different drivers makes it possible
for a program to function roughly the same way no matter which printer is being
used, so long as you select the correct driver for the printer you’re using. If you don’t
select the correct driver, you’ll get strange symbols, incorrect fonts, etc., being printed
instead of a great-looking document!
When you use your printer with a software package, you need to select a driver com-
patible with your printer in order to have the software send the people printer com-
mands to instruct your printer as to how to format and print the document.
A Printer Driver Diskette is not included in your package. If you have any questions
or need further information about Printer Driver, please contact the dealer where you
purchased your printer.
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Compatible Printer Drivers
Many of the software packages you use will contain drivers 100% compatible with
your printer. For older software, however, it may be necessary to select a driver that
functions nearly the same as a driver specifically designed for your printer. This gen-
erally means that you will be selecting a driver that provides commands to access
most, but not all of the available functions; however, the commands that are available
will perform properly with your printer.
The table below summarizes the various drivers that will work with your printer.
They are listed in order by decreasing compatibility as you go down the list: select
one from as high up on the list as possible, based on what is available from among the
drivers supplied with your software. If you don’t see one from near the top of the list,
give the software manufacturer a call to see if they have added any drivers to those
supplied when you purchased your software. Software manufacturers are constantly
updating their lists of drivers to keep up with the printer market and they may very
well have one which will give maximum compatibility with your printer.
IBM Proprinter Emulation IBM X24e AGM/XL24e AGM
Emulation
Epson LQ
Emulation
Oki ML 590/ 1 IBM
IBM Proprinter
X24e/ XL24e
IBM Proprinter
X24/ XL24
Use this emulation only when Oki ML 590/ 1 Epson
you've selected an IBM Pro- Epson LQ 870/ 1170
printer X24e/ XL24e driver Epson LQ 850/ 1050
and you need to use Epson Epson LQ 860/ 2550
LQ high density graphics.
Epson LQ 2500
Epson LQ 1500
Epson LQ
IBM Proprinter
IBM Graphics Printer
Epson FX
Epson JX
Epson LX
Epson RX
Epson MX
Because there are some differences in characteristics such as speed or access to vari-
ous features, you may wish to experiment with several different drivers. If you must
select a driver that is not listed in the table, be sure to check it thoroughly for print
features such as boldface, underline and changes in pitch. Don’t be surprised if bold-
faced items are printed twice, underlines are misplaced, wide spaces are left between
lines or the printer behaves chaotically (turn off the printer if the latter occurs). These
are all characteristics of an incompatible driver selection.
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hapter 5: Ploblem Solving,
C
Maintenance, & Service
This chapter provides solutions to some common printer problems and explains the
routine maintenance procedures that will help keep your printer in tip-top operating
condition. It also tells you how to order parts, consumables and accessories, and pro-
vides information on obtaining service for your printer. You will find your printer’s
warranty at the back of this Printer Handbook.
Problem Solving
What if …
…nothing happens when I turn on the printer?
The printer may not be plugged in. Check the power cord connection to the outlet
and to your printer. If you’re using a power strip, make sure it’s turned on. Check to
be sure that the fuse hasn’t blown or that the circuit breaker hasn’t tripped.
…the printer doesn’t print when the computer sends data?
The printer may be deselected. If the SEL light is out, press the SELbutton to select the
printer.
The printer cable may not be securely connected. Check the cable to be sure that it is
properly connected to both the PC and the printer.
If you have installed the serial I/ F board, check to be sure that the board is firmly
seated in the printer.
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…I’m getting strange symbols, incorrect fonts, etc., when I try to print a document?
The printer driver you have engaged does not agree with the emulation selected for
your printer.
To check the emulation selected, first make sure paper is loaded, then press the SEL
and SHIFT buttons simultaneously to enter the MENU on your printer. Next, press
the GROUP button: this will print the emulation selected.
If the emulation is not the one you want to use, press the SET button to change it to
the one you want before exiting the MENU (to exit, press SEL and SHIFT buttons).
If the emulation is correct, check your software documentation on how to select a
printer driver, then check to be sure that you have selected one of the drivers listed for
that emulation on page 49). The closer the driver is to the top of the list, the more
compatible it will be with your printer. If your software doesn’t have any of the indi-
cated drivers available, check with the software manufacturer to see if they have added
any additional drivers since you purchased your software.
If you have embedded any printer commands in your software, check to be sure that
you entered them correctly.
…I’ve installed a brand new ribbon and the printing is smeared and streaked?
The plastic shield on the ribbon is either loose or missing. The shield must be left on
the ribbon when you are installing the cartridge. To remedy this situation, move the
printhead to the center of the platen (careful – printhead may be HOT!) and lift off the
ribbon cartridge. Check the ribbon shield. If it’s loose, secure it in place properly. If it’s
missing, locate it and reinstall it.
…there are dots missing in my printouts?
The head gap may not be set correctly. Try moving the head gap lever to a lower
setting. If that doesn’t help, the printhead may be damaged; call for service.
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… the Alarm light is on and the Character Pitch 15 light is flashing?
This indicates a paper loading error. To stop the flashing light, press the SEL button.
Before trying to load paper in again, check to be sure that you have the paper lever in
the correct position (BOT, TOP, REAR) for the path you’re using.
Caution! Always turn the printer off before you turn the platen knob!
If the paper lever is in the correct position and you’re using rear feed, lift up the paper
separator and check to be sure that paper is properly on the tractors and has not
jammed up somehow.
If the paper lever is in the correct position and you’re using the optional bottom-feed
push tractor, check the bottom tractor unit to be sure that paper is properly on the
tractors and has not jammed up before entering the printer.
Once the paper is correctly loaded, press and release the SEL button, then hold the
SHIFT button and press the RESET (Character Pitch) button.
…I need to load paper, but the Alarm light is not on?
If the Alarm light is off, the printer thinks it has paper loaded. To correct this problem,
press and release the SEL button, then hold the SHIFT button and press the RESET
(Character Pitch) button. The Alarm light will come on and you’ll be able to load
paper.
…my word processor files don’t print the way I have the MENU and front panel set?
Before sending a file to the printer, many word processors send either an “initializa-
tion string” or an I-Prime signal to the printer.
The initialization storing contains codes that reset the printer to a default set of fea-
tures: otherwise the printer might accidentally print using features set for a previous
job. These codes will override panel or MENU settings. To set your printer to ignore
the reset code, enter the printer MENU (hold SHIFT button while pressing SEL/ MENU
button) and change the Reset Inhibit item (in the Set-Up group) to Yes. Please note
that while this will stop the reset code from resetting your printer, other codes in the
initialization string may still override the printer MENU and/ or front panel settings.
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The I-Prime signal is sent over the parallel interface (pin 31) and will automatically
override any settings you have made using the front panel buttons. To eliminate this
problem, enter the program MENU (hold SHIFT button while pressing SEL/ MENU
button) and change the I-Prime item (in the Parallel I/ F group) to Invalid.
…the Print Quality and Character Pitch buttons on the front panel won’t work?
The Operator Panel Function item on the printer MENU can be used to disable these
buttons. If the printer is part of a customized system or if it is used by a number of
people, the system manager may have used this option to make sure the printer is
always set properly.
…static electricity causes the paper to stick?
In cold, dry weather, static charges can build up on continuous-form paper. This can
make the paper cling to the paper separator. If you have this problem during high-
volume printing jobs, try moving the single sheet paper guides on the separator to-
gether so that the paper rests on the guides rather than on the separator itself.
Maintenance
This section explains how to change ribbons, clear paper jams and clean your printer.
Replacing the Ribbon Cartridge
When replacing the ribbon, be sure to use only ribbons specifically for use with
MICROLINE 390 / 391 Turbo printers. For best results,use genuine OKI ribbons.
1. Turn printer off.
2. Disengage and swing open access cover.
Caution! Be careful not to touch the
printhead: it may be hot!
54
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3. Slide ribbon cartridge along until it is
centered on platen, being careful not to
touch printhead.
Center
printhead
4. Swing front-end of cartridge up off
printhead, then lift cartridge out and
discard it.
Swing front end
up to remove
5. Remove new ribbon cartridge from its
packaging — do NOT remove clear
plastic ribbon shield!
6. Hold ribbon cartridge with knob fac-
ing up and exposed portion of ribbon
facing platen. Place flat end on ribbon
plate, fitting grooves over pins on plate.
Plastic shield
facing platen
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7. Low er front end of cartrid ge over
printhead until it snaps into place. Turn
knob in direction of arrow (clock-wise)
to take up any slack in ribbon.
1
2
3
4
5
Knob
56
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Clearing Paper Jams
Caution! Always turn the printer off before you turn the platen knob!
Rear Feed Jams
To clear a rear-feed paper jam:
1. Turn off printer
2. Turn platen knob to back paper out of printer. Remove any ripped pieces of paper.
3. Reload paper, turn printer back on and press FF/ LOAD button.
If your paper keeps jamming, the chances are excellent that you have bits of paper
stuck in the paper path. To eliminate this problem:
1. Turn off printer.
2. Use platen knob to back paper out of
printer.
3. Remove the paper separator.
Remove
paper
separator
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4. Open tractor covers and remove paper
from printer.
Tractor covers
5. Open access cover and lift off pull-up
roller assembly.
Remove pull-up
roller assembly
Note: Never attach or remove the pull-up roller
assembly when the paper separator is in the
standing state.
6. Fold some single-sheet, continuous-
feed paper over three times to produce
page four sheets thick.
7. Load this quadruple-thick sheet onto
tractor pins and close tractor covers.
Quadruple-thick paper
8. Turn platen knob to draw quadruple-
thick paper around platen. This will
bring jammed pieces of paper up and
out so you can dispose of them.
9. Back qu ad ru p le-thick sheet ou t of
printer using platen knob.
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10.Replace pull-up roller assembly.
Replace pull-up
roller assembly
Note: When installing a pull-up roller assem-
bly, Shift the paper lever in agreement with the
“Rear” mark before the installation.
11.Reload regular paper (open tractor cov-
ers, place paper on pins, close tractor
covers).
12.Swing access cover and paper separa-
tor back into place.
Replace
paper
separator
13.Turn printer on and press FF/ LOAD
button.
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Single Sheet Feed Jams
To remove jammed single sheets of paper (top feed):
1. Turn printer OFF.
2. Rotate platen knob to back paper out
of carriage.
3. If necessary, open access cover and lift
off pull-up roller assembly to provide
access to remove any ripped pieces
from around carriage.
Lift off pull-up roller
assembly
Button Feed Jams
If bottom-feed paper jams:
1. Turn off printer and use platen knob to
back paper out carefully.
2. Be sure to remove any shreds of paper
from printer before reloading paper.
(Open access cover and lift off pull-up
roller assembly to provide access to car-
riage area.)
Lift off pull-up roller
assembly
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Cleaning the Housing
You should clean the printer every six months (or after about 300 hours of operation).
To do this:
1. Turn printer OFF and remove paper
from path.
2. Open access cover and remove pull-up
Remove pull-up roller
roller assembly.
assembly
3. Use clean, dry cloth to dust area around
carriage shaft and platen. Be sure to re-
move any loose particles of paper.
Note: The built-up of dust or paper powder in
the printer, which may be occurred by some
environmental settings or media used, may
cause a mulfunction, so execute cleaning ac-
cording to how the printer is dirty.
4. Reinstall pull-up roller assembly and
close access cover.
Note: When installing a pull-up roller assem-
bly, Shift the paper lever in agreement with
the “Rear” mark before the installation.
Never use solvents or strong deter-
gents on the cabinet–they could
damage the housing.
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Accessories
You can add even more flexibility to your printer by means of the following optional
accessories.
Cut Sheet Feeder, Single-Bin and Dual-Bin
Mounts on the platen to provide continu-
ous single-sheet paper feed. The bin will
hold up to 100 sheets of standard, 20-lb
paper. With cable for connection to printer.
Push Tractor, Bottom-Feed
Converts printer for feeding continuous-
form paper from the bottom. Use of bot-
tom feed eliminates the curling which
takes place as rear-feed paper moves
around the platen. Bottom feed is ideal for
card stock, thick multi-part forms, labels
which could peel off and jam the unit if
fed in from the rear, etc.
Includes tractor, support legs for printer,
and metal tear bar.
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Pull Tractor, Top-Mount
Used for bottom-feed of labels or heavy
card stock, or in conjunction with the rear-
feed tractor to provide more precise pa-
per control when you’re using multi-part
forms. Includes cover for installation in
place of access cover.
Roll Paper Stand
Adapts ML 390 Turbo printer for use with
roll-type paper (not supplied). Not usable
on ML 391 Turbo.
Includes stand and support. With cable for
connection to printer.
Serial Interface
Includes serial interface board and lock-
ing piece for installation in printer next to
standard parallel interface. Without inter-
face cable.
Note: The use of the locking piece to 390/391
TURBO should be impermissible due to the
exclusiveness for other models.
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Replacement Parts
Replacement Part
Access Cover, ML 390 Turbo
Access Cover, ML 391 Turbo
AC Cord
Poll-up Roller Assembly, ML 390 Turbo
Poll-up Roller Assembly, ML 391 Turbo
Platen Knob
Printhead
Ribbon, Black
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ppendix A: Specifications
A
Print Method
Impact dot matrix
Printhead
24 pins, 0.20 mm diameter with thermal protec-
tion
Print Speed
Mode
Characters Characters
Per Inch (CPI) Per Second (CPS)
Utility
10
12
15
17.1
20
260
312
390
223
260
Letter Quality (LQ)
10
12
15
17.1
20
87
104
131
149
174
Characters per Line (CPL)
Setting
10 cpi
12 cpi
15 cpi
17.1 cpi
20 cpi
ML390 Turbo
80 cpl
ML391 Turbo
136 cpl
96 cpl
120 cpl
137 cpl
160 cpl
163 cpl
204 cpl
233 cpl
272 cpl
Emulations
Interface
Epson LQ, IBM Proprinter, IBM AGM
Standard: Centronics parallel
Optional: RS-232C serial
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Graphics Resolution:
360 x 360 dots per inch
Resident Font
Letter Quality
Courier, Gothic, Prestige, Orator, Roman, Swiss,
Swiss Bold
Utility
Gothic
Bar Code:
Code 39, UPC A, UPC E, EAN 8, EAN 13, Inter-
leaved 2 of 5, Code 128, Postnet
Receive Buffer Size
MAX 23K
Reliability
Mean Time Between
Failures (MTBR)
10000 hours at 25% duty cycle and 35%
Page density
Mean Time to Repair (MTTR) 15 minutes
Printhead life 200 million characters average in 10 cpi utility
mode at 25% duty and 35% page density
Ribbon Life
(on average, 10 cpi utility)
2 million characters
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Paper Specifications
Width
Minimum
3”
Maximum
ML 390 Turbo: 10”
ML 391 Turbo: 16”
12 to 24 lb.
Weight
Thickness
Rear feed
Bottom feed
0.014”(0.36 mm)
0.017”(0.44 mm)
Paper type
Feed
Weight
14 to 24 lb.
Width range
Cut sheets
Top only
ML390Turbo: 7.2" to 8.5"
ML391Turbo: 7.2" to 14.3"
Single-part continuous forms Rear, Bottom 12 to 24 lb.
ML390Turbo: 3" to 10"
ML391Turbo: 3" to 16"
Carbonless, multipart contin- Rear, Bottom 9 to 11 lb.
uous form (orig. + 4 copies)
ML390Turbo: 3" to 10"
ML391Turbo: 3" to 16"
Interleaf, multipart continu-
ous form (orig. + 4 copies)
Rear, Bottom 10 to 12 lb paper, ML390Turbo: 3" to 10"
9 lb carbon
ML391Turbo: 3" to 16"
Labels
Bottom only N.A.
ML390Turbo: 3" to 10"
ML391Turbo: 3" to 16"
Envelopes, single feed
Top
24 lb. max.
6.5" to 9.5"
6.5" to 9.5"
Envelopes, continuous feed,
non-overlap type
Bottom only 24 lb. max.
Bottom only 120 lb. max
Card stock
N.A.
Transparencies
Top only
—
8.5" x 11"
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Dimensions (W x D x H)
ML 390 Turbo:
15.7 x 13.6 x 4.6 inch (398 x 345 x 116 mm)
21.7 x 13.6 x 4.6 inch (552 x 345 x 116 mm)
ML 391 Turbo:
Weight
ML 390 Turbo:
ML 391 Turbo:
16 lb (7.4Kg)
20 lb (9.2Kg)
Environmental Requirements
Operating Temperature:
Storage Temperature:
Operating Humidity:
Storage Humidity:
41 to 95˚F (5 to 35˚C)
14 to 122˚F (-10 to +50˚C)
20 to 80% RH
5 to 95% RH
Electrical requirements
230/ 240 volts ac (+10%, -14%)
50/ 60 Hz (±2%)
Specifications subject to change without notice.
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ppendix B: Menu Selections
A
The menu selections for your printer are summarized below. Factory defaults are
indicated in bold face italic. Explanations for each item follow the table.
The table below summarizes all possible menu settings available with your
printer. Which of these you will actually see when you are working in the
Menu depends on the active emulation and on the options installed.
Group
Item
Setting
Printer Control Emulation Mode
Epson LQ, IBM PPR, IBM AGM
Font
Print Mode
LQ Courier, LQ Roman, LQ Swiss, LQ Swiss
Bold, LQ Orator, LQ Gothic, LQ Prestige,
Utility
Pitch
10 cpi, 12 cpi, 15 cpi, 17.1 cpi, 20 cpi
No, Yes
Proportional Spacing
Style
Size
Normal, Italics
Single, Double
Symbol Sets
Character Set
Language Set
Set I, Set II
American, French, German, Britishi, Danish
I, Swedish, Italian, Spanish I, Japanese, Nor-
wegian, Danish II, Spanish II, Latin Ameri-
can, French Canadian, Dutch, Publisher
Slashed, Unslashed
Zero Character
Code Page
USA, Canada French, Multilingual, Portu-
gal, Norway, BRASCII, Abicomp
Rear Feed
Line Spacing
6 LPI, 8 LPI
Form Tear-Off
Skip Over Perforation
Page Width*
Off, 500 ms, 1 sec, 2 sec
No, Yes
13.6", 8"
1
Page Length
11", 11 / ", 12", 14", 17", 3", 3.5", 4", 5.5", 6",
2
7", 8", 8.5"
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Group
Item
Line Spacing
Setting
Bottom Feed
6 LPI, 8 LPI
Form Tear-Off
Skip Over Perforation
Page Width *
Off, 500 ms, 1 sec, 2 sec
No, Yes
13.6", 8"
1
Page Length
11", 11 / ", 12", 14", 17", 3", 3.5", 4", 5.5", 6",
2
7", 8", 8.5"
Top Feed
Line Spacing
Form Tear-Off *
Bottom Margin
Page Width *
Page Length
6 LPI, 8 LPI
Off, 500ms, 1 sec, 2 sec
Valid, Invalid
5
13.6", 8"
1
11", 11 / ", 12", 14", 17", 3", 3.5", 4", 5.5", 6",
2
7", 8", 8.5"
Wait Time
1 sec, 2 sec, 500ms
Page Length Control
by Menu Setting, by Actual Page Length
Set-Up
Graphics
Uni-directional, bi-directional
8K, 1 Line, 23K
No, Yes
0, 0.05 mm Left, 0.10 mm Left, 0.15 mm Left,
0.20 mm Left, 0.25 mm Left, 0.25 mm Right,
0.25 mm Right, 0.15 mm Right, 0.10 mm Right,
0.05 mm Right
Receive Buffer Size
Paper Out Override
Print Registration
Operator Panel Function Full Operation, Limited Operation
Reset Inhibit
No, Yes
Print Suppress Effective
Auto LF
Auto CR *
Yes, No
No, Yes
No, Yes
1
CSF Bin Select
SI Select Pitch (10 CPI) *
SI Select Pitch (12 CPI) *
Time Out Print
Auto Select
Bin 1, Bin 2
17.1 CPI, 15 CPI
20 CPI, 12 CPI
Valid, Invalid
No, Yes
1
1
Graphics Speed
Centering Position
CSF Type *
Low, High
DEFAULT, MODE 1, MODE 2
Wide, Narrow
70
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Group
Item
Setting
Parallel I/ F
I-Prime
Pin 18
Auto Feed XT *
Buffer Print, Buffer Clear, Invalid
+5V, Open
Invalid, Valid
2
4
Serial I/ F *
Parity
None, Odd, Even
Serial Data 7/ 8 Bits
Protocol
Diagnostic Test
Busy Line
8 Bits, 7 Bits
Ready/Busy, X/ On/ X-Off
No, Yes
SSD-, SSD+, DTR, RTS
19200 bps, 9600 bps, 4800 bps, 2400 bps,
1200 bps, 600bps, 300 bps
Valid, Invalid
Ready on Power Up, Ready on Select
200 ms, 1 sec.
Baud Rate
DSR Signal
DTR Signal
Busy Time
3
CSF Bin 1 *
Line Spacing
Bottom Margin
Page Width *
Page Length
6 LPI, 8 LPI
Valid, Invalid
13.6", 8"
2
11", 11 / ", 12", 14", 17", 3", 3.5", 4", 5.5", 6",
3
7", 8", 8.5"
3
CSF Bin 2 *
Line Spacing
Bottom Margin
Page Length
6LPI, 8LPI
Valid, Invalid
2
11", 11 / ", 12", 14", 17", 3", 3.5", 4", 5.5", 6",
3
7", 8", 8.5"
* ML 391 Turbo only
1
* Appears only when IBM Proprinter emulation is selected.
2
* Appears only when Epson LQ emulation is selected.
3
* Appears only when optional Cut Sheet Feeder Accessory is installed.
4
* Appears only when optional Serial Interface is installed.
5
* Applicable only when the Roll Paper Stand is installed.
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Explanation of Menu Items
These explanations are in alphabetical sequence to make it easier to look them up.
Many of the items will appear only with optional equipment installed, as noted be-
low. You will find the items Line Spacing, Form Tear-Off, Skip Over Perforation and
Page Length appearing several times in the menu (once for each paper path).
Auto CR. IBM mode only. No (factory default) or Yes. Choose Yes to make your printer
automatically perform a carriage return when a LF is received at the end of the line.
Auto LF. No (factory default) or Yes. Change to Yes if your printer overprints. Keep
this set to No if your software adds a line feed when a carriage is received at the end
of a line. If your printout is consistently double spaced, set this item to No.
Auto Select. No (factory default) or Yes. Determines whether or not your printer will
automatically be selected after you load in paper. With the factory default (No) en-
gaged, the printer will be deselected so that you can set the Top of Form. If you al-
ways use the same Top of Form setting, change this setting to Yes so that you don’t
have to press the SEL button to select the printer after loading paper.
Auto Feed XT. Epson mode only. Invalid (factory default) or Valid. In the Epson emu-
lation, the XT signal on pin 14 of the parallel interface can control automatic line feed.
Some interface cables are wired in such a way that automatic line feed is always in
effect: the Auto Feed XT item eliminates this potential problem. The factory setting
causes the printer to ignore this signal; if your system uses pin 14 to control automatic
line feed, change the setting to Valid.
Baud rate. Appears only if optional Serial Interface is installed. Range from 19,200 to
300 bps: factory setting, 9600 bps. This item sets the transmission rate for the system.
Bottom Margin. Valid (factory default) or Invalid. Sets whether or not the printer will
ignore the bottom margin setting. Change the setting to Invalid if you want printer to
ignore the bottom margin setting. Be careful if you use this feature: it lets the printer
continue printing when there’s no more paper, which can cause loss of data and may
damage the printhead.
72
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Busy Line. Appears only if optional Serial Interface is installed. SSD- (factory de-
fault), SSD+, DTR, RTS. If Ready / Busy protocol (factory default) is selected, you can
choose which line your system monitors for a busy signal:
SSD -9V, select SSD-
SSD +9V, select SSD+
DTR -9V, select DTR
RTS -9V, select RTS
Busy Time. Appears only if optional Serial Interface is installed. 200 ms (factory de-
fault) or 1 sec.
Sets the length of the busy signal when the Ready / Busy protocol (factory default) is engaged.
Centering Position. Choose centering position.
Character Set. Choose IBM Set I (factory default) or IBM Set II.
Code Page. Choose USA (factory default), Canada French, Multilingual, Portugal,
Norway BRASCII, Abicomp.
CSF Bin Select.Appears only if optional Dual-Bin Cut Sheet Feeder is installed. Choose
Bin 1 (factory default) or Bin 2.
CSF Type. Select Wide (default) or Narrow for CSF type.
Diagnostic Test. Appears only if optional Serial Interface is installed. No (factory de-
fault) or Yes. Select Yes if you want to perform a diagnostic test of the serial interface.
DSR Signal. Applies only when optional Interface is installed. Valid (factory default) or In-
valid. Used with Ready / Busy protocol to select the way your system handles the DSR Signal.
DTR Signal.Applies only when optional Serial Interface is installed. Ready on Power
Up (factory default) or Ready on Select. Change to Ready on Select if the DTR signal
is required when the printer is selected; leave as Ready on Power Up if DTR signal is
required when printer is turned on.
Emulation Mode. IBM PPR , IBM AGM, or Epson LQ (factory default). Selects the printer
command set you want your printer to use: IBM X24e or XL24e Proprinter, IBM X24e or
XL24e Alternate Graphics Mode (AGM), or Epson LQ 850/ 1050.
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Form Tear-Off. Off (factory default), 500 ms, 1 sec, or 2 sec. Form Tear-Off advances
the paper to the perforation so that you can tear off a sheet of continuous-forms pa-
per. You can turn this feature off, or you can select a time interval for the printer to
wait before advancing the paper.
Graphics. Uni-directional (factory default) or bi-directional. Bi-directional graphics
print faster than uni-directional graphics, but uni-directional graphics have better
print registration. Bi-directional graphics printing can be optimized by adjusting the
Print Registration setting in the Menu.
Graphics Speed. Low (factory default) or High. Choose High speed for faster print-
ing when optimum print quality is not an issue.
I-Prime. Buffer Print (factory default), Buffer Clear, or Invalid. Determines how the printer
will react to the I-Prime signal from your software. With the factory default engaged,
when the printer receives the I-Prime signal, it will print out the contents of the buffer
before resetting. Change the setting to Buffer Clear if you wish the printer to dump the
contents of its buffer immediately upon receiving the I-Prime signal. Change to Invalid if
you want the printer to ignore your software’s I-Prime signal. This will permit you to
enter settings through the printer’s control panel which will not be automatically over-
ridden by the software’s settings when the I-Prime signal is sent.
Language Set. American (factory default), French, German, British, Danish I, Swed-
ish, Italian, Spanish I, Japanese, Norwegian, Danish II, Spanish II, Latin American,
French Canadian, Dutch, or Publisher. Replaces certain symbols with special charac-
ters used in the respective foreign languages.
Line Spacing. 6 lpi (factory default) or 8 lpi. Choose 8 lines per inch for tighter line
spacing, to get more lines per page.
Operator Panel Function. Full Operation (factory default) or Limited Operation.
Change to Limited Operation to deactivate the PRINT QUARITY and CHARACTER
PITCH buttons on the control panel. Then you can control these features only through
your software. This can be useful when several people are using the printer and you
don’t want its settings changed.
Important! This feature also prevents access to the Menu. To access the Menu, turn
the printer off, then hold down the SEL key while turning on the printer.
74
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Page Length. 11” (factory default), 11 2/ ”, 12”, 14”, 17”, 3”, 3.5”, 4”, 5.5”, 6”, 7”, 8”,
3
8.5”. Selects the length of the paper you’ll be using in your printer. This enables the
printer to keep track of the initial printing position on each page (Top of Form).
Page Length Control. Choose page length control system for SASF mode.
by Actual Page Length .....Control page length by actual physical page length.
by Menu Setting ................Control page length by logical page length.
Page Width. Appears in Menu for wide-carriage model only. Choose a page width of
13.6” (factory default) or 8”.
Paper out Override. No (factory default) or Yes. The paper out detector senses when
less than an inch of paper remains in the printer and stops printing at that point.
Changing this setting to Yes overrides the detector so you can print closer to the bot-
tom of the page if you’re using single sheets. Be careful if you use this feature: it lets
the printer continue printing when there’s no more paper, which can cause loss of
data and may damage the printhead.
Parity. Appears only if optional Serial Interface is installed. None (factory default),
Odd, or Even. Selects the type of parity your system uses.
Pin 18. +5V (factory default) or Open. Sets the signal on pin 18.
Pitch. 10 cpi (factory default), 12 cpi, 15 cpi, 17.1 cpi, or 20 cpi. Selects the character
width measured in characters per inch (cpi).
Print Mode. LQ Courier (factory default), LQ Roman, LQ Swiss, LQ Swiss Bold, LQ
Orator, LQ Gothic, LQ Prestige, or Utility. Choose one of the LQ fonts for letter qual-
ity printing; choose utility for high-speed printing.
Print Registration. 0 (factory default), 0.05 mm Left, 0.15 mm Left, 0.20 mm Left, 0.25 mm
Left, 0.25 mm Right, 0.20 mm Right, 0.15 mm Right, 0.10 mm Right, or 0.05 mm Right.
Change the setting as required to obtain the best registration for bi-directional printing.
Print Suppress Effective. Yes (factory default) or No. Enables/ disables print sup-
press command. The factory default enables the print suppress command: the printer
will ignore all data it receives after it accepts the print suppress command. Change to
No to cause your printer to ignore the print suppress command.
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Proportional Spacing. No (factory default) or Yes. Change to Yes to engage propor-
tional spacing of characters.
Protocol. Appears only if optional Serial Interface is installed. Selects the type of pro-
tocol your system uses: Ready/ Busy (factory default) or X-On/ X-Off.
Receive Buffer Size. 8K (factory default), 1 Line, or 23K. Selects the amount of memory
devoted to holding received data. Choosing 1 Line will tie up your computer during
printing, but if you about the print job the printer will stop printing much sooner.
Reset Inhibit. No (factory default) or Yes. Change to Yes if you want your printer to
ignore the reset command sent by software. This will prevent your software reset
command from changing the settings you have made through the front panel con-
trols or through printer commands. If you engage this feature, don’t forget that it will
also prevent your software from clearing out existing settings when you finish print-
ing one document and switch to another.
Serial Data 7/8 Bits. Appears only if optional Serial Interface is installed. 8 Bits (fac-
tory default) or 7 Bits. Change to 7 bits if your system uses a 7-bit data format.
SI Select Pitch (10 CPI). IBM mode only. 17.1 CPI (factory default) or 15 CPI. Sets
what pitch (17.1 or 15 characters per inch) will be engaged when the printer control
panel is set for 10 cpi and the SI command is received.
SI Select Pitch (12 CPI). IBM mode only. 20 CPI (factory default) or 12 CPI. Sets what
pitch (20 or 12 characters per inch) will be engaged when the printer control panel is
set for 12 cpi and the SI command is received.
Size. Choose Single (factory default) or Double width and height printing.
Skip Over Perforation. No (factory default) or Yes. Change to Yes if you want the
printer to advance automatically to the next page when it comes within one inch of
the bottom of the page. If your software has its own page formatting controls, keep
this item set to No to avoid interface.
Style. Choose Normal (factory default) or Italics.
76
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Time Out Print. Valid (factory default) or Invalid. When printing, if the printer doesn’t
receive any data, a line feed, or a form feed signal for awhile, it will automatically
dump out what’s in the print buffer. If your software spends a long time prossing
between feeding portions of data to the printer, you should change the setting to
Invalid to keep your printer from inadvertently dumping the received data while it’s
waiting for more.
Wait Tine. 500 ms, 1 sec (factory default), or 2 sec. Sets the amount of the printer will
wait for more data before jumping from the print position up to the form tear off
position.
Zero Character. Slashed (factory default) or Unslashed. The factory default will cause
a slash to appear in zeros to distinguish them from the capital letter O. To disengage
the slashed zero, change this to Unslashed.
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Appendix B: Menu Selections
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ppendix C: Commands–Epson Emulation
A
This appendix contains the commands for the Epson LQ emulation, grouped by func-
tion.
Normally the commands in this table override Menu settings. Except as noted,
these commands are cancelled and the printer returns to factory and Menu
settings when the printer receives an Initialization, Software I-Prime, or
Change Emulation command, or when it is turned off.
Epson
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Horizontal Control
Carriage Return
ASCII: CR
Dec: 13
Prints data in print buffer and performs
carriage return.
Hex: 0D
Set Horizontal Tabs
ASCII: ESC D n n ··· n NUL
Sets horizontal tab stop positions.
n=position of tab stop–maximum one
less than # of characters per line
1
2
k
Dec: 27 68 n n ··· n
Hex: 1B 44 n n ··· n 00
0
1
2
k
1
2
k
k=1 to 32; n =0: clear tabs
1
Default: every 8 columns
Once tabs are set, they remain the same
even if character pitch is changed.
Move to next horizontal tab stop
Horizontal Tab
ASCII: HT
Dec: 9
Hex: 09
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Epson
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Absoulte Horizontal
Position
ASCII: ESC $ n n
Move to new horizontal position.
Amount of movement from left margin
is calculated as follows:
1
2
Dec: 27 36 n n
Hex: 1B 24 n n
1
2
1
2
[n + (n x 256)] x (basic unit in inches),
1
2
where the basic unit is set by ESC (U, set
unit command. The default of the basic
unit is 1/ 60 inch.
n =0 to 255
1
n =0 to 255
2
n =n =0: left margin
1
2
Max. value: for 1/ 60 inch basic unit,
n =48 n =3(13.6" shift)
1
2
Space moved using this command will
not be underlined. DEL command will
not delete the skipped amount.
Relative Horizontal
Position
ASCII: ESC \ n n
Move to new horizontal position, rela-
tive to present position. Amount of
movement is calculated as follows:
± (n + [n x256] x (basic unit in inches),
1
2
Dec: 27 92 n n
1
2
Hex: 1B 5C n n
1
2
1
2
where the basic unit is set by ESC (U, set
unit command. The default of the basic
unit with LQ is 1/ 180 inch, and with
UTL it is 1/ 120 inch.
n =0 to 255
1
n =0 to 255
2
n =n =0: no movement
1
2
+ moves to right; - moves to left
Set Print Position
ASCII: ESC DLE @ P A A P P
2
OKI unique command. Sets next hori-
zontal position of printhead.
Pn= number of parameter bytes to fol-
low, range 0 to 255
n
1
2
1
P P
3
4
Dec: 27 16 64 [data]
Hex: 1B 10 40 [data]
A = specifies whether motion is abso-
1
lute or relative: even-absolute from
left margin; odd=relative from present
position
A = specifies direction of relative
2
movement: even= toward right margin
(forward); odd= toward left margin (re-
verse)
0 ≤ P , P , P , P ≤ 9 representing
1
2
3
4
number of units to move (size of unit
depends on character pitch)
80
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Epson
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Left Margin Set
Right Margin Set
Auto Justification
ASCII: ESC l n
Dec: 27 108 n
Hex: 1B 6C n
Sets left margin n character spaces from
printhead home position; must be at least 5
spaces (5 cpi) to left of right margin.
n=0 to 255
n=0: home position
ASCII: ESC Q n
Dec: 27 81 n
Hex: 1B 51 n
Sets right margin n character spaces
from printhead home position; must be
greater than the left margin.
n=1 to 255
n=0: command ignored
ASCII: ESC a n
Dec: 27 97 n
Justifies text according to the value of
n:
Hex: 1B 61 n
n=0: Left
n=1: Center
n=2: Right
n=3: Full (left & right)– use carriage
return only at end of paragraph.
Unidirectional Print On/
Off
ASCII: ESC U n
Dec: 27 85 n
Turns unidirectional (left to right only)
printing on and off.
Hex: 1B 55 n
n=1: Unidirectional printing On
n=0: Unidirectional printing Off (nor-
mal bidirectional printing)
One-line Unidirectional
Printing
ASCII: ESC <
Dec: 27 60
Turns on unidirectional (left to right)
printing for one line.
Hex: 1B 3C
Backspace
ASCII: BS
Dec: 8
Hex: 08
Prints data in print buffer and moves
one character to the left according to the
current character pitch.
Delete One Character
ASCII: DEL
Dec: 127
Deletes last character in print buffer.
Hex: 7F
Vertical Control
1
1
Set / -inch
6
ASCII: ESC 2
Dec: 27 50
Hex: 1B 32
Sets line spacing of / -inch (6 lines per
6
Line Spacing
inch). This is standard typewriter spac-
ing.
1
1
Set / -inch
8
ASCII: ESC 0
Dec: 27 48
Sets line spacing of / -inch (8 lines per
8
Line Spacing
inch).
Hex: 1B 30
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Epson
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
n
n
Set / -inch
60
ASCII: ESC A n
Dec: 27 65 n
Sets line spacing of / -inch.
60
Line Spacing
n=0 to 255
Hex: 1B 41 n
n=0: no line feed.
n
n
Set /
-inch
ASCII: ESC 3 n
Dec: 27 51 n
Sets a line spacing of /
n=0 to 255
-inch.
180
180
Line Spacing
Hex: 1B 33 n
n=0: no line feed
n
n
Set /
-inch
ASCII: ESC + n or ESC [ n
Dec: 27 43 n or 27 93 n
Hex: 1B 2B n or 1B 5B n
Sets line spacing of /
-inch. ESC [ n is
360
360
Line Spacing
OKI unique command
n=0 to 255
n=0: no line feed
Line Feed
n
ASCII: LF
Dec: 10
Hex: 0A
Prints buffer data and moves the print-
head by the current line spacing value.
Cancels SO and ESC SO commands.
n
/
-inch Line Feed
-inch Reverse Line
-inch Line Feed
ASCII: ESC J n
Dec: 27 74 n
Hex: 1B 4A n
Executes one /
-inch line feed with-
180
180
out changing line spacing.
n=0 to 255
n=0: no line feed, but initiates printing
n
n
/
ASCII: ESC j n
Dec: 27 106 n
Hex: 1B 6A n
Executes one /
-inch reverse line
180
180
Feed
feed without changing line spacing.
n=0 to 255
n=0: no line feed, but initiates printing
n
n
/
ASCII: ESC ] n
Dec: 27 93 n
Hex: 1B 5D n
OKI unique command. Executes /
-
360
360
inch line feed without changing line
spacing.
n=0 to 255
n=0: no line feed, but initiates printing
Set relative vertical print
position
ASCII: ESC (v n n m
m
m
Performs carriage return in the forward
or reverse direction from the current po-
sition.
1
2
1
1
2
2
Dec: 27 40 118 n n m
1
2
Hex: 1B 28 76 n n m
m
1
2
1
2
n =2, n =0: specifies the number of pa-
1
2
rameters (inbytes) to follow Amount of
carriage returns executed=±(m +[m
1
2
x256]) x (basic unit in inches) The basic
unit is set by set unit command ESC (U.
The default of basic unit is 1/ 360 inch.
Forward feeding exceeding approx. 46.2
inches and reverse feeding exceeding
approx. 0.5 inch are invalid. Reverse
feeding is invalid in raster graphics
mode.
82
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Epson
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
It is a print carriage return execution
command, which does not involve re-
turning to previous settings following
the execution of this command.
Set absolute vertical print ASCII: ESC (V n n m
m
Indicates the absolute position within
the paper size, and executes carriage re-
turn.
1
2
1
2
position
Dec: 27 40 86 n n m
Hex: 1B 28 56 n n m
m
m
1
2
1
2
1
2
1
2
n =2, n =0: specifies the number of pa-
1
2
rameters (in bytes) to follow Amount of
carriage returns executed=±(m + [m x
1
2
256]) x (basic unit in inches) The basic
unit is set by set unit command ESC (U.
The default of basic unit is 1/ 360 inch.
Forward feeding exceeding approx. 46.2
inches and reverse feeding exceeding
approx. 0.5 inch are invalid.
It is a print carriage return execution
command, which does not involve re-
turning to pervious settings following
the execution of this command.
Form Feed
ASCII: FF
Dec: 12
Hex: 0C
Prints data in buffer and advances pa-
per to next top of form. Canceles SO and
ESC SO command. With Cut Sheet
Feeder, inserts or ejects paper depend-
ing on status of paper when command is
issued.
Vertical Tab
ASCII: VT
Dec: 11
Print buffer data and move to next verti-
cal tab stop.
Hex: 0B
Set Vertical Tab Stops
ASCII: ESC B n n ··· n NUL
Sets vertical tab stops at specified lines
relative to Top of Form position.
k=1 to 16: number of tabs
1
2
k
Dec: 27 66 n n ··· n
Hex: 1B 42 n n ··· n 00
0
1
2
k
1
2
k
n=1 to 255: line number where tab is to
be set.
n=0: clears tab setting for Vertical
Format Unit channel 0
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Epson
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Set Vertical Format Unit
(VFU)
ASCII: ESC b m n n
n
0
n 00
NUL
Programs up to 8 separate sets (chan-
nels) of vertical tab stops.
m=0 to 7: channel number (0 is default
set by ESC B command)
1
2 ···
k
k
Dec: 27 96 m n n
Hex: 1B 62 m n n
n
1
2 ···
1
2 ··· k
k=1 to 16: number of tab stops in chan-
nel
n=1 to 255: number of lines down from
Top of Form position
n=0: clear tab settings for channel m
Select Vertical Tab Chan- ASCII: ESC / n
Activates preprogrammed vertical tab
channel n. VT moves to stops in this
channel.
nel
Dec: 27 47 n
Hex: 1B 2F n
n=0 to 7: channel number (0 is default)
Set Page Length in Lines ASCII: ESC C n
Dec: 27 67 n
Sets page length in lines. Current posi-
tion becomes top of form. Printer calcu-
lates page length vy multiplying cur-
rent line feed pitch by value entered for
"n".
Hex: 1B 43 n
n=1 to 255.
Cancels Skip over Perforation setting.
Page length set by this command will
not change even if line spacing is
changed.
Set Page Length in Inches ASCII: ESC C NUL n
Dec: 27 67 0 n
Sets page length in inches. Current posi-
tion becomes top of form.
Hex: 1B 43 00 n
n=1 to 22.
Cancels Skip over Perforation setting.
Set page length in de-
fined unit
ASCII: ESC (C n n m
m
Sets the page length to the currently se-
lected paper mode.
1
2
1
2
Dec: 27 40 67 n n m
Hex: 1B 28 43 n n m
m
m
1
2
1
2
n =2, n =0: specifies the number of pa-
1
2
1
2
1
2
rameters (in bytes) to follow Amount of
carriage returns executed= ±(m + [m x
1
2
256]) x (basic unit in inches) The basic
unit is set by set unit command ESC (U.
The default of basic unit is 1/ 360 inch.
Page length selection exceeding 22 inch-
es is invalid.
This command is invalid when
m =m =0.
1
2
Skip Over Perforation feature is deacti-
vated by this command.
84
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Epson
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Set page format
ASCII: ESC (c n n t t b b
2
Set the top and bottom margins for the
currently selected paper mode.
1
2 1 2
1
Dec: 27 40 99 n n t t b b
1
2 1 2
1
2
Hex: 1B 28 63 n n t t b b
n =4, n =0: specifies the number of pa-
1
2 1 2
1
2
1
2
rameters (in bytes) to follow.
Top margin=(t + [t x256]) x (basic unit
1
2
in inches)
Bottom margin=(b +[b x256]) x (basic
1
2
unit in inches)
The default of basic units 1/ 360 inch.
Skip Over Perforation feature is deacti-
vated by this command.
Set Skip Over Perforation ASCII: ESC N n
Activates Skip Over Perforation feature
and sets it for n lines at the current line
spacing. When Perforation Skip area is
entered, printer will automatically feed
paper down to top of form on next page.
Once this command is entered, the Skip
Over Perforation setting will remain the
same even if line spacing is changed.
n=1 to 255
area
Dec: 27 78 n
Hex: 1B 4E n
(bottom margin)
Cancel Skip Over Perfora- ASCII: ESC O
Deactivates Skip Over Perforation. Com-
mand overrides menu.
tion
Dec: 27 79
Hex: 1B 4F
Cut Sheet Feeder
Option
Cut Sheet Feeder Control ASCII: ESC EM n
Controls Cut Sheet Feeder accessory.
n=1: Select bin 1
n=2: Select bin 2 (if present)
n=73 (ASCII "I"): Insert sheet
n=82 (ASCII "R"): Eject sheet
Dec: 27 25 n
Hex: 1B 19 n
Character Sets
Copy ROM Character Set ASCII: ESC : 0 n 0
Copies the designated character set to
the user defined set in RAM:
n=0: Roman
to RAM Character Set
Dec: 27 58 0 n 0
Hex: 1B 3A 00 n 00
n=1: Swiss
n=2: Courier
n=3: Prestige
n=7: Orator
n=122: Swiss Bold
n=124: Gothic
n=126: MENU setting
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Epson
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Define Custom
Character(s)
ASCII: ESC & 0 [data]
Dec: 27 38 0 [data]
Hex: 1B 26 00 [data]
Defines and stores in RAM up to 256
utility quality character patterns.
Custom character will be cleared by Ini-
tialize command, Software I-PRIME
command, Emulation Switch com-
mand, I/ F I-PRIME signal, or by turn-
ing the printer off.
If Receive Buffer Size in MENU is Set to
23K, this command is Ignoved.
Custom Character Set
On/ Off
ASCII: ESC % n
Dec: 27 37 n
Engages/ disengages custom character
set.
Hex: 1B 25 n
n=0: Select custom character set
n=1: Select default character set
Select International
Character Set
(set Code Page)
ASCII: ESC R n
Dec: 27 82 n
Hex: 1B 52 n
Select character set containing 15 special
characters used in foreign language
printing:
n=0: American
n=1: French
n=2: German
n=3: British
n=4: Danish I
n=5: Swedish
n=6: Italian
n=7: Spanish I
n=8: Japanese
n=9: Norwegian
n=10: Danish
n=11: Spanish II
n=12: Latin American
n=13: French Canadian
n=14: Dutch
n=64: Publisher
The character tables indicated by d , d are
Assign character table
ASCII: ESC (C t n n d
d
2
2
d
3
3
2
3
1
2
1
2
3
stored in the four types of areas indicated by
(Character Table 0-3). From among the four
Dec: 27 40 116 n n d
d
d
1
2
1
d
1
Hex: 1B 28 74 n n d
d
d
1
2
1
tables, one is selected by ESC t command.
n =3, n =0: specifies the number of parame-
1
2
ters (in bytes) to follow
d =0 to 3: stored character table number.
1
d , d =0, 0: Italic
2
3
d , d =1, 0: PC 437 (USA)
2
3
d , d =3, 0: PC 850 (Multilingual)
2
3
d , d =7, 0: PC 860 (Portugal)
2
3
d , d =8, 0: PC 863 (Canada-French)
2
3
d , d =9, 0: PC 865 (Norway)
2
3
d , d =25, 0: BRASII
2
3
d , d =26, 0: Abicomp
2
3
86
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Epson
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Select Epson Character
Set
ASCII: ESC t n
Dec: 27 116 n
Hex: 1B 74 n
Table selection is made from among four
character tables.
n=0: Character Table 0
n=1: Character Table 1
n=2: Character Table 2
n=3: Character Table 3
The tables designated by default are as
follows:
Character Table 0: Italic
Character Table 1: Table being selected
by "CodePage" in the MENU
Character Table 2: DLL character re-
allocation.
Character Table 3: PC 437 (USA)
Print data as character
table
ASCII: ESC (^ n n [data]
All [data] become printing data. All
codes of 01H-FF are treated as printing
data. 00H code is ignored as Null code.
The number of printing data (in bytes) to
1
2
Dec: 27 40 94 n n [data]
1
2
Hex: 1B 28 5E n n [data]
1
2
follow are indicated by n and n .
1
2
Number of printing data (in bytes)=n +
1
[n x 256]
2
Permit printing of upper ASCII: ESC 6
Enables printing of characters in upper
ASCII code range (128 to 159).
range control codes
Dec: 27 54
Hex: 1B 36
Cancel printing of upper ASCII: ESC 7
Cancels ESC 6 command.
range control codes
Dec: 27 55
Hex: 1B 37
Bar Code Command
Select Bar Code Type and ASCII: ESC DLE A m n ··· n
m is number of parameters specified: 2,
4, 5, 6, 7, or 8
1
8
Size
Dec: 27 16 65 m n ··· n
1
8
m n ··· n
n , n set bar code style as follows:
Hex: 1B 10 41
1
8
1
2
n , n =0, 1: EAN8
1
2
n , n =0, 2: EAN13
1
2
n , n =1, 0: UPC-A
1
2
n , n =1, 4: UPC-E
1
2
n , n =2, 0: CODE 39
1
2
n , n =3, 0: Interleaved 2 of 5
1
2
n , n =4, 0: Code 128
1
2
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Epson
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
n , n set vertical length of bars: normal
3
4
15
value is ([n x 10] + n ) (
/
-inch)
3
4
180
n sets width of modules or black bars,
5
depending on style engaged.
n sets spacing
6
n sets ratio of wide element to narrow
7
element
n : Specifies whether or not characters
8
are to be attached
n =0: characters not attached
8
n =1 or more: LQ characters attached
8
Print Industrial Bar Code ASCII: ESC DLE B m n [data]
Prints bar code data.
Data
Dec: 27 16 66 m n [data]
Hex: 1B 10 42 m n [data]
m=amount of data (in bytes) to follow n
specifies Code 128 mode (when Code
128 is selected) as follows: n=65: Set A
n=66: Set B
n=67: Set C
Print Postnet Bar Code
Data
ASCII: ESC DLE C n [data]
Dec: 27 16 67 n [data]
Hex: 1B 10 43 n [data]
n=amount of data (in bytes) to follow:
n=1 to 20
Data consists of single-digit numbers
(0 to 9).
Print Features
Utility / LQ Selection
ASCII: ESC x n
Dec: 27 120 n
Hex: 1B 78
n=0: Utility printing
n=1: NLQ printing
Select LQ Typeface
ASCII: ESC k n
Dec: 27 107 n
Hex: 1B 6B n
n=0: Roman
n=1: Swiss
n=2: Courier
n=3: Prestige
n=7: Orator
n=122: Swiss Bold
n=124: Gothic
n=126: MENU setting
Select font by pitch and
point
ASCII: ESC X m n n
Selects Multipoint (scalable font) mode.
Printable font is selected by character
pitch and point
1
2
Dec: 27 88 m n n
Hex: 1B 58 m n n
1
2
1
2
Character pitch
m=0: unchanged
m=1: Proportional
88
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Epson
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
m>5: m / 360 inch
Point size=(n + [n x 256]) x 0.5 point
1
2
Point size can be selected between a
minimum of 8 point to a maximum of 64
point.
Proportional Spacing
Select 10 cpi Pitch (Pica)
Select 12 cpi Pitch (Elite)
Select 15 cpi Pitch
ASCII: ESC p n
Dec: 27 112 n
Hex: 1B 70 n
See also ESC ! n command.
n=1: Start proportional spacing
n=0: Stop proportional spacing
ASCII: ESC P
Dec: 27 80
Hex: 1B 50
Normally, selects 10 cpi (Pica). In com-
pressed mode, selects 17.1 cpi.
ASCII: ESC M
Dec: 27 77
Hex: 1B 4D
Normally, selects 12 cpi (Elite). In com-
pressed mode, selects 20 cpi.
ASCII: ESC g
Dec: 27 103
Hex: 1B 67
Selects 15 cpi pitch.
Select Compressed Print
ASCII: SI or ESC SI
Dec: 15 or 27 15
Hex: 0F or 1B 0F
Pitch depends on current pitch selected:
10 cpi becomes 17.1 cpi
12 cpi becomes 20 cpi
Cancel Compressed Print ASCII: DC2
Cancels 15 cpi print selected by SI or
ESC SI command.
Dec: 18
Hex: 12
Set Character Spacing
ASCII: ESC SP n
Dec: 27 32 n
Hex: 1B 20 n
Adds n dots of space (depending on the
current pitch) between characters.
n=0 to 127
Select horizontal motion
index (HMI)
ASCII: ESC c n n
Sets the amount of space between char-
acters (HMI).
1
2
Dec: 27 99 n n
Hex: 1B 63 n n
1
2
HMI= (n + [n x 256])/ 360 inch.
1
2
1
2
The specification is invalid if HMI ex-
ceeds 3 inches.
The command is invalid when n =n =0.
1
2
Select Italic Characters
Cancel Italics
ASCII: ESC 4
Dec: 27 52
Hex: 1B 34
See also ESC !, ESC 7.
ASCII: ESC 5
Dec: 27 53
Clears italic printing engaged by ESC 4
command.
Hex: 1B 53
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Epson
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Score (Lines)
Selection
ASCII: ESC ( - j h l n n
Selects underline, strike-through, or
overscore.
jand h specify amount of data to follow,
calculated as j + h x 256
1
2
Dec: 27 40 45 j h l n n
Hex: 1B 28 2D j h 0 l n n
1
2
1
2
n = 1: Start underline
1
n = 2: Start strike through
1
n = 3: Start overscore
1
n = 0: Cancel score mode selected by n
2
1
n = 1: Start single continuous line
2
n = 2: Start double continuous line
2
n = 5: Start single dashed line
2
n = 6: Start double dashed line
2
Turn Underlining on/ off ASCII: ESC - n
Dec: 27 45 n
Underlines all text except tabs.
n= 1: Start underlining
Hex: 1B 2D n
n= 0: Stop underlining
Start Superscript/
Subscript
ASCII: ESC S n
Dec: 27 83 n
n= 0: Start superscript
n= 1: Start subscript
Hex: 1B 53 n
Stop Superscript/
Subscript
ASCII: ESC T
Dec: 27 84
n= 0: Normal
Hex: 1B 54
n= 1: Outline
n= 2: Shadow
Select Character Style
(normal, shadow, out-
line, outline& shadow)
ASCII: ESC q n
Dec: 27 113 n
Hex: 1B 71 n
n= 3: Outline with shadow
Start Emphasized
Printing
ASCII: ESC E
Dec: 27 69
Hex: 1B 45
Prints horizontally shifted double dots in
utility mode at half speed. See also ESC !
command.
Override MENU until Initialize, Soft-
ware I-PRIME or Change Emulation
command is received, or until printer is
turned off.
Stop Emphasized
Printing
ASCII: ESC F
Dec: 27 70
Clears emphasized printing engaged by
ESC E command.
Hex: 1B 46
Start Enhanced (Double
Strike) Printing
ASCII: ESC G
Dec: 27 71
Prints vertically shifted double dots in
two passes. See also ESC ! command.
Hex: 1B 47
90
Appendix C: Priner Commands
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Epson
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Stop Enhanced Printing
ASCII: ESC H
Dec: 27 72
Clears double strike printing set by ESC
G command.
Hex: 1B 48
Double Width (Expand-
ed) Printing
ASCII: ESC W n
Dec: 27 87 n
n= 1: Start double width printing
n= 0: Stop double width printing
Hex: 1B 57 n
Immediate Double Width ASCII: SO or ESC SO
Dec: 14 or 27 14
Prints double width only to end of line:
can also be canceled by DC4, ESC W 0
and ESC ! commands.
Hex: 0E or 1B oE
Stop Immediate Double
Width Printing
ASCII: DC4
Dec: 20
Only cancels double width set by SO or
ESC SO.
Hex: 14
Double Height Printing
ASCII: ESC w n or ESC US n
Dec: 27 119 n or 27 31 n
Hex: 1B 77 n or 1B 1F n
OKI unique command
n= 1: Start double height
n= 0: Stop double height
Graphics, 8 & 24-pin
Mode
For all graphics com-
mands the number of dot
columns of graphic data is
as follows: dots= n + (n
x 256)
1
2
Graphics Select/ Print
ASCII: ESC * m n n [graphic data] Selects 8-pin and 24-pin graphic modes
1
2
Dec: 27 42 m n n [graphic data]
Hex: 1B 2A m n n [graphic data]
and prints graphic data.
1
2
m= 0: Single density, 8-pin 60 dpi
m= 1: Double density, 8-pin, 120 dpi
m= 2: Double speed, double density,
8-pin, quasi-120 dpi (dots can not be
printed directly adjacent to one another)
m= 3: Quadruple density, 8-pin, quasi-
240 dpi (dots can not be printed directly
adjacent to one another)
1
2
m= 4: CRT I, 8-pin, 80 dpi
m= 6: CRT II, 8-pin, 90 dpi
m= 32: Single density, 24-pin, 60 dpi
m= 33: Double density, 24-pin, 120 dpi
m= 38: CRT III, 24-pin, 90 dpi
m= 39: Triple density, 24-pin, 180 dpi
m= 40: Hex-density, 24-pin, quasi-360
dpi (dots can not be printed directly ad-
jacent to one another)
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Epson
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
n , n = 0 to 255: specifies amount of sub-
1
2
sequent Bit Image bytes received, calcu-
lated as n + (n x 256)
1
2
Graphics, 8 -pin Mode
Single Density Graphics
ASCII: ESC K n n [graphic data]
Dot density 60 dpi horizontal, 72 dpi
vertical.
Maximum data per line: ML390
Turbo=480: ML391 Turbo=816
1
2
Dec: 27 75 n n [graphic data]
1
2
Hex: 1B 4B n n [graphic data]
1
2
n , n = 0 to 255: specifies amount of sub-
1
2
sequent Bit Image bytes received, calcu-
lated as n + (n x 256)
1
2
Double Density Graphics ASCII: ESC L n n [graphic data]
Dot density 120 dpi horizontal, 72 dpi
vertical.
Maximum data per line: ML390 Turbo=
960: ML391 Turbo= 1632
1
2
Dec: 27 76 n n [graphic data]
1
2
Hex: 1B 4C n n [graphic data]
1
2
n , n = 0 to 255: specifies amount of sub-
1
2
sequent Bit Image bytes received, calcu-
lated as n + (n x 256)
1
2
Quasi Double Density
Graphics
ASCII: ESC Y n n [graphic data]
Same as double density graphics (120
dpi), but printer can't put two adfacent
dots in the same row.
1
2
Dec: 27 89 n n [graphic data]
1
2
Hex: 1B 59 n n [graphic data]
1
2
Quadruple Density
Graphics
ASCII: ESC Z n n [graphic data]
Dot density 240 dpi horizontal, 72 dpi
vertical. Printer can't put two adjacent
dots in the same row.
1
2
Dec: 27 90 n n [graphic data]
1
2
Hex: 1B 5A n n [graphic data]
1
2
Maximum data per line: ML390 Tur-
bo=1920: ML391 Turbo=3264
n , n = 0 to 255: specifies amount of sub-
1
2
sequent Bit Image bytes received, calcu-
lated as n + (n x 256)
1
2
Reassign Graphics
ASCII: ESC ? m n
Dec: 27 63 m n
Hex: 1B 3F m n
Converts ESC K, ESC L, ESC Y, or ESC Z
command to a graphics select com-
mand:
For ESC K: m=75
For ESC L: m=76
For ESC Y: m=89
For ESC Z: m=90
n=0: Single density, 60 dpi
n=1: Double density, 120 dpi
92
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Epson
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
n=2: Double speed, double density,
quasi- 120 dpi (adjacent dots can not be
printed)
n=3: Quadruple density, quasi- 240 dpi
(adjacent dots can not be printed)
n=4: CRT I, 80 dpi
n=6: CRRT II, 90 dpi
n=38: CRT III, 90 dpi
Composite Command
ASCII: ESC ! n
DEc: 27 33 n
Hex: 1B 21 n
Calculate n as the sum of the values of
the features to be activated. If a feature's
value is not included in the sum, it will
be deactivated.
n=0: 10 cpi
n=1: 12 cpi
n=2: Proportional spacing
n=4: Compressed
n=8: Emphasized
n=16: Enhanced
n=32: Double Width
n=64: Italics
n=128: Underlining
Miscellaneous
Select emulation mode
ASCII: ESC { n
Dec: 27 123 n
Hex: 1B 7B n
OKI unique command. Switches printer
emulation mode, copying the custom
character data in buffer and saving the
print and receive buffers.
MENU settings unaffected.
n=0: IBM mode (general)
n=2: IBM X24e PPR, XL24e PPR
n=3: IBM X24e AGM, XL24e AGM
n=64: Epson mode (general)
n=66: Epson LQ 850, LQ 1050
Initialize printer
ASCII: ESC @
Dec: 27 64
Hex: 1B 40
Clears print buffer (receive buffer unaf-
fected), resets printer to menu defaults,
current position becomes top of page.
Custom character data is not touched.
This command is acknowledged only if
Reset Inhibit in MENU is set to " No"
(factory default).
Cancel
ASCII: CAN
Dec: 24
Hex: 18
Clears print buffer (receive buffer unaf-
fected) and executes carriage return;
commands and custom character data
unaffected.
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Epson
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Set Most Significant Bit
(MSB) to 1
ASCII: ESC >
Dec: 27 62
Set the MSB (8th bit) to 1.
Hex: 1B 3E
Set Most Significant Bit
(MSB) to 0
ASCII: ESC =
Dec: 27 61
Sets the MSB (8th bit) to 0.
Hex: 1B 3D
Reset Most Significant Bit ASCII: ESK #
Cancels ESC > or ESC =. MSB accepted
"as is" from computer.
(MSB)
Dec: 27 35
Hex: 1B 23
Print Suppress Mode On ASCII: DC3
Places printer in Print Suppress Mode
after printing data in print buffer.
Ignores all further commands except
DC1 command.
Dec: 19
Hex: 13
Print Suppress Effective item in MENU
must be set to "Yes" for this command to
be acknowledged.
Print Suppress Mode Off ASCII: DC1
Clears Print Suppress Mode, re-
activating printer to once again process
all data received.
Dec: 17
Hex: 11
Disable Paper-Out
Sensor
ASCII: ESC 8
Dec: 27 56
Hex: 1B 38
OKI unique command. Disables paper-
out sensor, even if Paper Out Override
in MENU is set to "On" the (factory de-
fault). If data flows onto next page and
reaches top of form setting for that page,
printer ALARM light will come on to in-
dicate paper-out error.
Enable Paper-Out
Sensor
ASCII: ESC 9
Dec: 27 57
Hex: 1B 39
OKI unique command. Enables paper-
1
out sensor to detect when less than /
2
inch of paper is left. When ALARM light
is on, pressing SELECT prints 1 line of
data at a time until the top of form set-
ting for the next page is reached.
Sensor can also be controlled by the
menu.
Half-Speed
Printing On/ Off
ASCII: ESC s n
Dec: 27 115 n
Hex: 1B 73 n
Prints at 50% of normal speed to reduce
noise.
n=1: Half-speed printing On
n=0: Half-speed printing Off
94
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Epson
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Software I-Prime
ASCII: ESC } NUL
Dec: 27 125 0
Hex: 1B 7D 00
OKI unique command. Clears data in
print buffer (receive buffer unaffected);
resets printer to menu default if applica-
ble, non-menu features returned to fac-
tory default. Executes paper eject in Cut
Sheet Feeder mode.
Set unit
ASCII: ESC ( U n n m
Sets the basic unit of horizontal and ver-
tical lengths.
1
2
Dec: 27 40 85 n n m
1
2
Hex: 1B 28 55 n n m
n =1, n =0: specifies the number of pa-
1
2
1
2
rameters (in bytes) to follow
The commands affected by this com-
mand are:
ESC (V, ESC (v, ESC \ , ESC $, ESC (C,
ESC (c.
Set/ Reset Incremental
Print Mode
ASCII: ESC i n
Dec: 27 105 n
Hex: 1B 69 n
Sets the Incremental print mode
n=0: Reset Incremental print mode
n=1: Set Incremental print mode
Raster Graphics
Select graphics mode
ASCII: ESC ( G n n m
Sets the raster graphics mode.
1
2
Dec: 27 40 71 n n m
n =0: specifies the number of parame-
1
2
2
Hex: 1B 28 47 n n m n =1,
ters (in bytes) to follow
1
2
1
This command can be deactivated by
ESC @ (printer initialization). The raster
graphics command ESC is valid only
while in this mode.
The printer is initialized by this com-
mand.
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Epson
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Turn raster graphics
mode ON/ OFF
ASCII: ESC DLE G P
P
OKI unique command. Activates and
deactivates raster graphics mode.
n0
n
Dec: 27 16 71 P
Hex: 1B 10 47 P
P
n0
n0
n
P
P
=1: specifies the number of parame-
n0
n
ters (in bytes) to follow
P =odd number: raster graphics mode
n
activated
P =even number: raster graphics mode
n
deactivated
Print raster graphics
ASCII: ESC . P P P P n n [data] Input data is printed with bit pattern in
c
v
h
m
1
2
Dec: 27 46 P P P P n n [data]
horizontal direction.
c
v
h
m
1
2
Hex: 1B 2E P P P P n n [data] P : mode setting
c
v
h
m
1
2
c
P =0: full graphics mode
c
c
P =1: compressed mode
P : vertical direction dot density setting
v
P =10: 3600/ P → 360 DPI
v
v
P =20: 3600/ P → 180 DPI
P : horizontal direction dot density set-
v
v
h
ting
P =10: 3600/ P → 360 DPI
h
h
P =20: 3600/ P → 180 DPI
h
h
P : horizontal direction dot number
m
Horizontal direction dot number=n +
2
1
[n x 256]
The command is ignored when
P =10 and P =20.
v
h
96
Appendix C: Priner Commands
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ppendix D: Commands–IBM Emulation
A
This appendix contains the commands for the IBM X24e/ XL24e Proprinter and X24e
AGM/ XL24e AGM emulations, grouped by function.
Normally the commands in this table override Menu settings. Except as noted,
these commands are cancelled and the printer returns to factory and Menu
settings when the printer receives an Initialization, Software I-Prime, or
Change Emulation command, or when it is turned off and then on again.
IBM
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Horizontal Control
Carriage Return
ASCII: CR
Dec: 13
Prints data in buffer and performs car-
riage return.
Hex: 0D
Set Horizontal Tabs
ASCII: ESC D n n ··· n NUL
Sets horizontal tab stop positions.
n=1 to 255: specifies position of tab stop
- maximum is number of characters per
line
1
2
k
Dec: 27 68 n n ··· n
Hex: 1B 44 n n ··· n 00
0
1
2
k
1
2
k
k=1 to 28; n =0: clear tabs
1
Default: every 8 columns
Horizontal Tab
ASCII: HT
Dec: 9
Move to next horizontal tab stop
Hex: 09
Reset Tabs to Default
ASCII: ESC R
Dec: 27 82
Hex: 1B 52
Reset horizontal tabs for default: every
8th character. Also resets vertical tabs to
default of 1 line.
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IBM
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Move to the Left
(Backwards)
ASCII: ESC e n n
Move to the left, relative to present posi-
tion, calculated as
1
2
Dec: 27 101 n n
Hex: 1B 65 n n
1
2
(n =[n x 256])/ 120 inches
1
2
1
2
n =0 to 255
1
n =0 to 255
2
n =n =0: no movement
1
2
Self Left & Right Margins ASCII: ESC X n m
Dec: 27 88 n m
Sets left (n) and right (m) margins in
character columns at current pitch. Once
set, margins remain fixed even if charac-
ter pitch is changed. m must be at least
10 character space (at 10 cpi) to the right
of n.
Hex: 1B 58 n m
n=0 to 255; n=0: left margin unchanged
m=0 to 255; m=0: right margin un-
changed
Engage/ Disengage
Unidirectional Printing
ASCII: ESC U n
Dec: 27 85 n
Hex: 1B 55 n
n=1: Unidirectional printing On
n=0: Unidirectional printing Off (return
to bidirectional)
Backspace
ASCII: BS
Dec: 8
Hex: 08
Prints data in buffer and moves one
character to the left according to current
character pitch.
Set Print Position
ASCII: ESC DLE @ P A A P P
2
OKI unique command. Sets horizontal
position of printhead.
n
1
2
1
P P
3
4
Dec: 27 16 64 [data]
Hex: 1B 10 40 [data]
P : specifies number of bytes to follow,
n
range 0 to 127 (MSB ignored)
A : specifies if motion is absolute (even
1
number) or relative (odd number)
A : specifies direction of relative move-
2
ment right (even number) or left (odd
number)
P , P , P , P =0 to9: specify print posi-
1
2
3
4
tion, in four digits:
(P x 1000) + (P x 100) + (P x 10) + P
1
2
3
4
1
Unit of print position is /
inch in LQ
360
1
mode; /
inch in Utility mode.
240
Maximum default value for left and
right margins: 2880 for ML390 Turbo:
4896 for ML 391 Turbo
98
Appendix D: Priner Commands
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IBM
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Vertical Control
1
1
/
Set / -inch
8
ASCII: ESC 0
Dec: 27 48
-inch Line Spacing=8 lines per inch.
8
Line Spacing
Hex: 1B 30
7
Set / -inch
72
ASCII: ESC 1
Dec: 27 49
This is the line spacing used for graph-
ics.
Line Spacing
Hex: 1B 31
Activate Line Spacing
ASCII: ESC 2
Dec: 27 50
Hex: 1B 32 n
This command is required to activate the
line spacing set by the ESC A n com-
mand (see below).
n
n
Set / -inch or
72
ASCII: ESC A n
Dec: 27 65 n
Hex: 1B 41 n
In PPR emulation, sets and stores /
-
72
n
/
-inch
60
inch line spacing; in AGM emulation,
sets and stores / -inch line spacing.
n
Line Spacing
60
The ESC 2 command must be sent to ini-
tiate the line spacing change.
n=1 to 255
n=0: no change in line sapcing.
n
Set /
-inch
ASCII: ESC % 8 n
Dec: 27 37 56 n
Hex: 1B 25 38 n
OKI unique command. Sets line spacing
to n/ 360-inch.
n=1 to 255
360
Line Spacing
n=0: no line feed
n
n
n
Set /
inch
-inch or
/
-
180
ASCII: ESC 3 n
Dec: 27 51 n
Hex: 1B 33 n
For PPR emulation, sets /
-inch line
216
216
spacing; for AGM emulation, sets
n
Line Spacing
/
=inch line spacing.
180
n=1 to 255
n=0: command is ignored
Line Feed
ASCII: LF
Dec: 10
Hex: 0A
Prints buffer data and moves printhead
down by current by current line spac-
ing value. In PPR emulation, performs
carriage return only if Auto CR in
MENU has been changed to Yes (fac-
tory default is No). In AGM emulation
performs carriage return regardless of
Auto CR setting.
Reverse Line Feed
ASCII: ESC ]
Dec: 27 93
Hex: 1B 5D
Prints buffer data and performs one re-
verse line feed at the current line spac-
ing. Movement will not go above top of
form. Not recommended for use with
optional pull tractor.
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IBM
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Automatic Line Feed
Control
ASCII: ESC 5
Dec: 27 53 n
Hex: 1B 35 n
n=Odd: Line feed automatically added
to each CR (carriage return)
n=Even: auto line feed turned Off
n
/
-inch Line Feed
360
ASCII: ESC % 4 n
Dec: 27 37 52 n
Hex: 1B 25 34 n
OKI unique command. Prints data in
n
buffer and executes a single /
-inch
360
line feed without changing line spac-
ing.
n=1 to 255
n=0: no line feed
n
n
/
-inch or /
-inch
180
ASCII: ESC J n
Dec: 27 74 n
Hex: 1B 4A n
In PPR emulation, prints data in buffer
n
216
Line Feed
and executes a single /
-inch line
216
feed: in AGM emulaiton, executes a sin-
n
gle /
-inch line feed, both without
180
changing line spacing. Carriage Return
determined by menu setting.
n=1 to 255
n=0: no line feed
Form Feed
ASCII: FF
Dec: 12
Hex: 0C
Prints data in buffer and advances pa-
per to next top of form. With Cut Sheet
Feeder installed, will eject or insert pa-
per depending on status of feeder.
Vertical Tab
ASCII: VT
Dec: 11
Print buffer data and move to next ver-
tical tab stop.
Hex: 0B
Set Vertical Tab Stops
ASCII: ESC B n n ··· n NUL
Sets vertical tab stops at specified lines.
k=1 to 64: number of tabs
n=1 to 255: line number where tabs is to
be set
1
2
k
Dec: 27 66 n n ··· n
Hex: 1B 42 n n ··· n 00
0
1
2
k
1
2
k
Set Form Length in
Inches
ASCII: ESC C NUL n
Dec: 27 67 0 n
Sets page length in inches.
n=1 to 255 inches
Hex: 1B 43 00 n
n=0: Command ignored
This command cancels Skip Over Per-
foration setting.
100
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IBM
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Set Form Length in Lines ASCII: ESC C n
Dec: 27 67 n
Sets page length in lines, relative to cur-
rently selected line spacing, calculated
by multiplying value of n by line spac-
ing ratio.
Hex: 1B 43 n
n=1 to 255
This command cancels Skip Over Perfo-
ration setting.
Set Skip Over Perforation ASCII: ESC N n
Dec: 27 78 n
Activates Skip Over Perforation feature
and sets it for n lines at the current line
spacing. When the printer reaches the
bottom of the page, it will skip n lines to
next top of form. Command overrides
menu.
Hex: 1B 4E n
n=1 to 255 lines
n=0: command ignored
Cancel Skip Over
Perforation
ASCII: ESC O
Dec: 27 79
Deactivates Skip Over Perforation.
Command override menu.
Hex: 1B 4F
Set Top of Form
ASCII: ESC 4
Dec: 27 52
Hex: 1B 34
Sets top of form at current printhead po-
sition. Command ignored in CSF or Au-
to-Feed mode.
Cut Sheet Feeder
(Option)
Cut Sheet Feeder Control ASCII: ESC EM n
OKI unique command. Controls Cut
Sheet Feeder accessory.
n=1: Select bin 1
Dec: 27 25 n
Hex: 1B 19 n
n=2: Select bin 2 (if present)
n=73 (ASCII "I" ): Insert sheet
n=82 (ASCII "R" ): Eject sheet
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IBM
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Character Sets Select
Code Page
ASCII: ESC [ T1h NUL NUL H
Selects Code Page
1, h=0 to 255: specify amount of data to
follow, calculated as 1 = (h x 256)
cp
L
NUL
cp
Dec: 27 91 84 1 h 0 0 H
Hex: 1B 5B 54 1 h 00 00 H
L
0
L
cp cp
00
H
, L =0 to 255: specifies Code Page
cp cp
cp cp
ID No., calculated as 1 + (Hcp x256)+L
ID No.=437: USA
cp
ID No.=850: Multilngual
ID No.=860: Portugal
ID No.=863: Canadian French
ID No.=865: Norway
ID No.=1040: BRASCII
ID No.=1041: Abicomp
Select International
Character Set
ASCII: ESC ! n
Dec: 27 33 n
Hex: 1B 21 n
OKI unique command. Select character
set containing special characters used in
foreign language printing:
n=64: US ASCII, slashed zero
n=65: US ASCII (unslashed zero)
n=66: British
n=67: German
n=68: French
n=69: Swedish
n=70: Danish
n=71: Norwegian
n=72: Dutch
n=73: Italian
n=74: French Canadian
n=75: Spanish
n=76: Latin American
n=90: Publisher
Print from IBM
Character Set III
ASCII:ESC \ n n
This character set includes printable
characters for commands. Specify total
number of characters to be printed, cal-
1
2
Dec: 27 92 n n
1
2
Hex: 1B 5C n n
1
2
culated as n + (n x 256).
1
2
Print One Character
from IBM Character
Set III
ASCII: ESC ^ n
Dec: 27 94 n
Hex: 1B 5E n
Prints character n from IBM Character
Set III n=0 to 255.
102
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IBM
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Select IBM Character
Set I
ASCII: ESC 7
Dec: 27 55
Selects IBM Character Set I
Hex: 1B 37
Select IBM Character
Set II
ASCII: ESC 6
Dec: 27 54
Selects IBM Character Set II
Hex: 1B 36
Bar Code Commands
Select Bar Code Type and ASCII: ESC DLE A m n ··· n
OKI unique command
m=number of parameters specified
(m=0, 1 or 3: command ignored)
1
8
Size
Dec: 27 16 65 m n ··· n
Hex: 1B 10 41 m n ··· n
1
8
1
8
n , n : selects bar code style
1
2
n , n =0, 1: EAN8
1
2
n , n =0, 2: EAN13
1
2
n , n =1, 0: UPC-A
1
2
n , n =1, 4: UPC-E
1
2
n , n =2, 0: CODE39
1
2
n , n =3, 0: Interleaved 2 of 5
1
2
n , n =4, 0: Code 128
1
2
n , n : sets vertical length of bars, in
3
4
15
units of
/
-inch, calculated as ([n x
180
15
3
10] + n ) x
/
"
180
4
n : sets black bars; n =1 to 7
5
5
n : sets spacing; n =1 to 7
6
6
n : sets ratio of wide element to narrow
7
element; n =1 to 7
7
n : specifies whether or not characters
8
are to be attached
n =0: characters not attached
8
n =1 or more: LQ characters attached
8
Print Industrial Bar Code ASCII: ESC DLE B n m [data]
OKI unique command
n: specifies amount of data to follow
m: selects CODE128 mode (CODE128
must be selected for this command to be
recognized)
Data
Dec: 27 16 66 n m [data]
Hex: 1B 10 42 n m [data]
m=65: Set A
m=66: Set B
m=67: Set C
ML390/391 Turbo Printer Handbook
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IBM
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Print Postnet Bar Code
Data
ASCII: ESC DLE C n [data]
Dec: 27 16 67 n [data]
Hex: 1B 10 43 n [data]
OKI unique command.
n: designates amount of data to follow
n=1 to 20
Data consists of single-digit numbers.
Print Features
Select LQ Typeface
ASCII: ESC k n
Dec: 27 107 n
Hex: 1B 6B n
OKI unique command. Selects typeface
according to value of n:
n=0: Roman
n=1: Swiss
n=2: Courier
n=3: Prestige
n=4: Script
n=5: OCR-B
n=6: OCR-A
n=7: Orator
n=8: Orator-S
n=122: Swiss Bold
n=124: Gothic
Select Font
ASCII: ESC [I j h H
Dec: 27 91 73 j h H
Hex: 1B 5B 49 j h H
L
H
H
H
L
L
L
fa Sets the font typeface, character width
fa and spacing attributes.
fa j, h: set number of parameters to follow,
calculated as j + (h x 256) bytes
j, h=0 or1: command invalid
j, h=2, 3: fid setting valid, other modes
unchanged
fid fid fwd fwd
L
fid fid fwd fwd
L
fid fid fwd fwd
j, h=4: fid, fwd settings valid; fa un-
changed
j, h=5: all settings valid
j, h=6 or more: all settings and parame-
ter data beyond 6 bytes will be ignored
H
, L : sets font typeface, calculated
fid fid
as (H .L =(H x 256) + L
H
fid fid
fid
fid
, L : Sets character width (cpi),
fwd fwd
calculated as
, L =(H
H
x 256) + L
fwd
fwd fwd
fwd
fa: sets spacing attribute;
n=2: prints Proportional;
n=any other value, cpi set by H
,
fwd
L
fwd
Select font by pitch and
point
ASCII: ESC DLE F P m n n
Sets the Multipoint (scalable font) mode.
Printable font is selected by character
pitch and point.
n0
1
2
Dec: 27 16 70 P m n n
Hex: 1B 10 46 P m n n
n0
1
2
n0
1
2
104
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IBM
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
P
=3: specifies the number of parame-
n0
ters (in bytes) to follow
Character Pitch
m=0: unchanged
m=1: Proportional
m>5: m/ 360 inch
Point size=(n + [n x 256]) x 0.5 point
1
2
Point size can be selected between a
minimum of 8 point to a maximum of
64 point.
Proportional Spacing
ASCII: ESC P n
Dec: 27 80 n
Engages/ cancels proportional spacing
n=0 to 255:
Hex: 1B 50 n
n is odd number: start proportional
spacing
n is even number: stop proportional
spacing
When printer is in utility mode, this
command will switch it to LQ propor-
tional until it is canceled.
Set 10 Cpi Pitch
Set 12 Cpi Pitch
ASCII: DC2
Dec: 18
Hex: 12
This is standard pica typewriter size.
ASCII: ESC :
Dec: 27 58
Hex: 1B 3A
Changes to 12 cpi except if Menu item
"SI Select (12 CPI)" is set to "20", then
ESC: will change 17.1 cpi to 20 cpi and
will not change 20 cpi.
Set 15 Cpi Pitch
ASCII: ESC g
Dec: 27 103
Hex: 1B 67
OKI unique command. Sets 15 cpi.
Set Compressed Pitch
ASCII: SI
Dec: 15
hex: 0F
Condenses cpi as follows (depending on
MENU setting for SI Select Pitch):
10 cpi: 15 cpi for SI=10; 17.1 cpi for SI=12
12 cpi: 12 cpi for SI=10; 20 cpi for SI=12
15 cpi: 15 cpi for SI=10; 17.1 cpi for SI=12
17.1 cpi: 15 cpi for SI=10; 17.1 cpi for
SI=12
20 cpi: 15 cpi for SI=10;17.1 cpi or 20 cpi
for SI=12
ML390/391 Turbo Printer Handbook
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IBM
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Set 20 Cpi Pitch
ASCII: ESC SI
Dec: 27 15
OKI unique command.
Hex: 1B 0F
Select pitch printer mode, ASCII: ESC I n
Selects character font according to the
value of n:
and ROM versus RAM
character generator.
Dec: 27 73 n
Hex: 1B 49 n
n=0: 10 cpi, utility (UTL), ROM
n=2: 10 cpi, letter quality (LQ), ROM
n=3: Proportional, LQ, ROM
n=8: 12 cpi, UTL, ROM
n=10: 12 cpi, LQ, ROM
n=12: 12 cpi, LQ, ROM
n=16: 17 cpi, UTL, ROM
n=18: 17 cpi, LQ, ROM
n=24: 15 cpi, UTL, ROM
n=26: 15 cpi, LQ, ROM
n=32: 20 cpi, UTL, ROM
n=34: 20 cpi, LQ, ROM
Start Italic Printing
Stop Italic Printing
Underlining
ASCII: ESC % G
Dec: 27 37 71
Hex: 1B 25 47
OKI unique command. Italic characters
may overlap slightly.
ASCII: ESC % H
Dec: 27 37 72
Hex: 1B 25 48
OKI unique command. Cancels italic
printing engaged by ESC % G com-
mand.
ASCII: ESC - n
Dec: 27 45 n
Underlines all text except tabs.
n=0 to 255
Hex: 1B 2D n
n=odd: start underlining
n=even: stop underlining
Start Subscript/
Superscript
ASCII: ESC S n
Dec: 27 83 n
Engages subscript or superscript print-
ing.
Hex: 1B 53 n
n=0 to 255
n=odd: start subscript
n=even: start superscript
Stop Subscript/
Superscript
ASCII: ESC T
Dec: 27 84
Cancels subscript or superscript print-
ing
Hex: 1B 54
106
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IBM
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Select Character Style
ASCII: ESC q n
Dec: 27 113 n
Hex: 1B 71 n
Selects character style.
n=0: normal
n=1: outline
n=2: shadow
n=3: outline with shadow
Start Emphasized
Printing
ASCII: ESC E
Dec: 27 69
Prints horizontally shifted double dots in
utility mode at half speed.
Hex: 1B 45
Stop Emphasized
Printing
ASCII: ESC F
Dec: 27 70
Cancels emphasized printing.
Hex: 1B 46
Start Enhanxed (Double
strike) Printing
ASCII: ESC G
Dec: 27 71
Prints vertically shifted double dots in
two unidirectional passes.
Hex: 1B 47
Stop Enhanced Printing
ASCII: ESC H
Dec: 27 72
Cancels enhanced printing.
Hex: 1B 48
Double Width
(Expanded) Printing
ASCII: ESC W n
Dec: 27 87 n
n=odd: start double width printing
n=even: stop double width printing
Hex: 1B 57 n
Immediate Double Width ASCII: SO
Prints double width only to end of line;
can be canceled by DC4 or ESC W 0
command.
Dec: 14
Hex: 0E
Stop Immediate Double
Width Printing
ASCII: DC4
Dec: 20
Cancels double width set by SO com-
mand.
Hex: 14
Control Double Height/
Width
ASCII: ESC [ @ l m n n n n
4
Sets double height, double width, or
both double height and double width
l=0 to 255
1
2
3
Dec: 27 91 64 l m n n n n
1
2
3
4
Hex: 1B 5B 40 l m n n n n
1
2
3
4
m=0 to 255
n , n ignored
1
2
n : specifies character height and line
3
feed
n =17: single line feed, standard height
3
n =34: double line feed, double height
3
n : specfied character width
4
n =1: standard width
4
n =2: double width
4
Command will be ignored when print-
ing bit image graphics.
ML390/391 Turbo Printer Handbook
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IBM
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Overscore
ASCII: ESC _ n
Dec: 27 95 n
Hex: 1B 5F n
Prints a continuous overscore over all
text characters except for tab spaces.
n=0 to 255
n=odd: start overscore
n=even: stop overscore
Graphics, 8-Pin Mode
For all 8-pin graphics
commands the number of
dot columns of graphic
data=n + (n x 256)
1
2
Single Density Graphics
ASCII: ESC K l h [graphics data]
Dec: 27 75 l h [graphics data]
Hex: 1B 4B l h [graphics data]
Dot density 60 dpi horizontal, 72 dpi
vertical.
Maximum data per line: ML390 Tur-
bo=480: ML391 Turbo=816
l,h=0 to 255: specifies amount of subse-
quent Bit Image bytes received, calculat-
ed as l + (h x 256).
Double Density Graphics ASCII: ESC L l h [graphics data]
Dec: 27 76 l h [graphics data]
Dot density 120 dpi horizontal, 72 dpi
vertical.
Hex: 1B 4C l h [graphics data]
Maximum data per line: ML390 Tur-
bo=960: ML391 Turbo=1632
l, h=0 to 255: specifies amount of subse-
quent Bit Image bytes received,
calculated as l + (h x256).
Quasi-Double Density
Graphics
ASCII: ESC Y l h [graphics data]
Dec: 27 89 l h [graphics data]
Hex: 1B 59 l h [graphics data]
Same as low speed double density (120
dpi), but printer can't put two adjacent
dots in the same row.
Quadruple Density
Graphics
ASCII: ESC Z l h [graphics data]
Dec: 27 90 l h [graphics data]
Hex: 1B 5A l h [graphics data]
Dot density 240 dpi horizontal, 72 dpi
vertical. Printer can't put two adjacent
dots in the same row.
Maximum data per line: ML390 Tur-
bo=1920: ML391 Turbo=3264
l,h=0 to 255: specifies amount of subse-
quent Bit Image bytes received,
calculated as l + (h x 256).
Set Aspect Ratio for Bit
Image Graphics
ASCII: ESC n n
Dec: 27 110 n
Hex: 1B 6E n
In PPR emulation, sets ratio of vertical to
horizontal dot density in bit image
graphics. Valid only for ESC K, ESC L,
108
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IBM
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
ESC Y, and ESC Z commands. Ratio is
determined by value of variable n:
n=0 or 1: 5 horizontal/ 6 vertical
n=2: 1 horizontal/ 1 vertical
n=3: Command ignored
Invalid (trapped) in IBM AGM emula-
tion.
Graphics, 8 & 24-Pin
Mode
Graphics Select/ Print
ASCII: ESC * m l h [graphics data] Selects 8-pin and 24-pin graphic modes
Dec: 27 42 m l h [graphics data]
Hex: 1B 2A m l h [graphics data]
and prints graphic data. Valid only for
IBM AGM.
m=0: Single density, 8-pin, 60 dpi
m=1: Double density, 8-pin, 120 dpi
m=2: Double speed, double density,
8-pin, quasi-120 dpi (dots can not be
printed directly adjacent to one another)
m=3: Quadruple density, 8-pin, quasi-
240 dpi (dots can not be printed directly
adjacent to one another)
m=4: CRT I, 8-pin, 80 dpi
m=6: CRT II, 8-pin, 90 dpi
m=32: Single density, 24-pin, 60 dpi
m=33: Double density, 24-pin, 120 dpi
m=38: CRT III, 24-pin, 90 dpi
m=39: Triple density, 24-pin, 180 dpi
m=40: Hex-density, 24-pin, quasi-360
dpi (dots can not be printed directly ad-
jacent to one another).
l, h=0 to 255: specifies amount of subse-
quent Bit Image bytes received,
calculated as l + (h x 256)
Graphics Select
ASCII: ESC [ g l h m [graphics data] Selects graphics and prints
Dec: 27 91 103 l h m [graphics data] m=0: Single density, 8-pin, 60 dpi
Hex: 1B 5B 67 l h m [graphics data] [same as ESC * () ]
m=1: Double density, 8-pin, 120 dpi
[same as ESC * 1]
m=2: Double speed, double density, 8-p-
in, quasi-120 dpi [same as ESC * 2]
m=3: Quadruple density, 8-pin, quasi-
240 dpi [same as ESC * 3]
m=8: Single density, 24-pin, 60 dpi
[same as ESC * 32]
ML390/391 Turbo Printer Handbook
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IBM
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
m=9: Double density, 24-pin, 120 dpi
[same as ESC * 33]
m=11: Triple density, 24-pin, 180 dpi
[same as ESC * 39]
m=12: Hex-density, 24-pin, quasi-360
dpi [same as ESC * 40]
l, h=0 to 255: specifies amount of subse-
quent Bit Image bytes received,
calculated as l + (h x 256)
Miscellaneous
Commands
Select Emulation Mode
ASCII: ESC { n
Dec: 27 123 n
Hex: 1B 7B n
OKI unique command. Switches printer
emulation mode, copying the custom
character data in buffer and saving the
print and receive buffers. MENU set-
tings unaffected.
n=0: IBM emulation (general)
n=2: IBM X24e PPR, XL24e PPR
n=3: IBM X24e AGM, XL24e AGM
n=64: Epson emulation (general)
n=66: Epson LQ 850, LQ 1050
Cancel
ASCII: CAN
Dec: 24
Hex: 18
Clears buffer and cancels single double-
width set by SO or ESC SO command;
does not affect custom characters or oth-
er commands.
110
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IBM
Function
Commands
(ASCII, Decimal, Hexadecimal)
Notes
Print Suppress Mode On ASCII: ESC Q n
Dec: 27 81 n
Prints out data in print buffer and puts
printer in Print Suppress Mode until
DC1 command is received, I-PRIME
signal is received, or SEL button is
pushed.
Hex: 1B 16 n
Command will be ignored unless Print
Suppress Effective item in MENU is set
to "YES."
n=36: Model ML390 Turbo (narrow carriage)
n=35: Model ML391 Turbo (wide carriage)
Print Suppress Mode Off ASCII: DC1
Cancels Print Suppress Mode. Printer
becomes active, processes all data re-
ceived.
Dec: 17
Hex: 11
Stop Printing
ASCII: ESC j
Dec: 27 106
Hex: 1B 6A
Deselects the printer. Press SELECT to
reactivate. No data is lost.
Disable Paper-Out
Sensor
ASCII: ESC 8
Dec: 27 56
Hex: 1B 38
Paper-out sensor is deactivated:
printer will print to next top of form be-
fore registering paper end error.
This command will be ignored if the Pa-
per Out Override in MENU is set to No
(the factory default).
1
Enable Paper-Out Sensor ASCII: ESC 9
Sensor detects when less than / inch of
2
Dec: 27 57
Hex: 1B 39
paper is left. When PAPER OUT light is
on, pressing SELECT prints 1 line of data
at a time until top of form position on
next page is reached. Sensor can also be
controlled by the MENU.
Software I-Prime
ASCII: ESC } NUL
Dec: 27 125 0
Hex: 1B 7D 00
OKI unique command. Sets the printer
to the same state as if it had been shut off
and turned back on (print buffer cleared,
receive buffer unaffected).
Set/ Reset Incremental
Print Mode
ASCII: ESC i n
Dec: 27 105 n
Hex: 1B 69 n
Sets the Incremental print mode
n=0: Reset Incremental print mode
n=1: Set Incremental print mode
ML390/391 Turbo Printer Handbook
111
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112
Appendix D: Priner Commands
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ppendix E: ASCII Character Codes
A
ASCII Character Sets
ML390/391 Turbo Printer Handbook
113
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114
Appendix E: ASCII Character Codes
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ML390/391 Turbo Printer Handbook
115
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116
Appendix E: ASCII Character Codes
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Superscript/ Subscript Characters
ML390
117
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118
Appendix E: ASCII Character Codes
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ppendix F: Interfacing
A
This appendix gives the pin assignments for the parallel interface. It also explains
how to install the optional Serial Interface Board and gives the pin assignments for
the serial interface.
Pin Assignments for Parallel Interface Signals
Pin
Signal
Return Pin
Direction
1
2
3
4
5
6
7
8
9
Strobe
Data 1
Data 2
Data 3
Data 4
Data 5
Data 6
Data 7
Data 8
Acknowledge
Busy
Paper End
Select
19
20
21
22
23
24
25
26
To Printer
To Printer
To Printer
To Printer
To Printer
To Printer
To Printer
To Printer
To Printer
From Printer
From Printer
From Printer
From Printer
To Printer
27
28
29
10
11
12
13
14
15
16
17
18
19-30
31
32
33
34
35
36
30
No Return
Auto Feed
Not used
0V
Chassis Ground
+5V *
No Return
No Return
Signal Ground
Frame Ground
From Printer
Ground
To Printer
From Printer
Signal Ground
0V
Input Prime
Fault
0V
Not used
Not used
Select In
High Level
To Printer
* 50 mA maximum
ML390/391 Turbo Printer Handbook
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Installing the Serial Interface
Caution! Handle the interface board with care to avoid damaging its components.
The components can also be damaged by static discharges. We recommend that you
leave the board in its protective packaging until you’ve read these instructions and
are ready to install it. Make sure the printer is unplugged before you install the board.
1. Remove plastic covering over opening
for serial board in back panel:.
– insert tip of flat-blade screwdriver at
Parallel port
top and twist it to snap plastic mold-
ing holding cover in place.
– repeat procedure for molding at bot-
tom of cover
– press inward on cover with your fin-
gers and bend it back and forth until
it snaps off.
2. Holding board by cable connector, with
Component
side of board
components facing away from parallel
interface, gently slide it into opening
against guides at top and bottom. Press
firmly into place.
120
Appendix F: Interfacing
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3. By inserting board to the far end, it is
locked by the lock piece inside.
Board
Lock piece
4. Connect suitable interface cable (must
be purchased separately) to printer con-
nector and to serial port of your com-
puter. Be sure to tighten screws on both
ends of cable to keep it in place.
Important! Make sure that you do not
have a parallel cable connected to the
printer when you’re using the serial inter-
face. You can switch to the parallel inter-
face without removing the serial board, but
only one cable can be attached at a time.
When the serial interface is installed, the
“Serial I/ F” portion of the Menu will be-
come active (see page 71).
ML390/391 Turbo Printer Handbook
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Pin Assignments for Serial Interface Signals
Pin
Signal
Symbol
Direction
1
2
3
4
5
Protective Ground
Transmitted Data
Received Data
Request to Send
Not used
PG
TD
RD
RTS
From Printer
To Printer
From Printer
6
7
Data Set Ready
Signal Ground
Not Used
Supervisory Send Data
Not Used
DSR
SG
To Printer
8-10
11
12-19
20
21-25
SSD
From Printer
From Printer
Data Terminal Ready
Not Used
DTR
122
Appendix F: Interfacing
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Oki Electric Industry
Co., Ltd.
10-3 Shibaura 4-chome,
Minato-ku, Tokyo,
108-8551, Japan
Tel : +81 3 5445 6335
Fax : +81 3 5445 6362 ~ 6364
Oki Electronics
78 Shenton Way, #09-01, Tel : +65 221 3722
(Singapore) Pte., Ltd.
Singapore 079120
Fax : +65 221 9282
Oki Electronics
(Hong Kong) Ltd.
Suite 1901-9, Tower 3,
China Hong Kong City,
33 Chanton Road,
Tel : +852 2736 2336
Fax : +852 2736 2395
Tsim Sha Tsui, Kowloon,
Hong Kong
Oki Systems (Thailand) 956 Udomvidhya Building Tel : +662 636 2535
Ltd.
6th Floor, Rama IV Rd.,
Silom, Bangrak, Bangkok
10500 Thailand
Fax : +662 636 2536
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Oki Data Corporation
4-11-22, Shibaura, Minato-ku
Tokyo 108-8551 Japan
Tel: +81-3-5445-6158
Fax: +81-3-5445-6189
Printed in Thailand
40018801EE
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