User’s
Guide
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Safety
Your Oki printer has been carefully designed to give you years
of safe, reliable performance. As with all electrical equipment,
there are a few basic precautions you should take to avoid
hurting yourself or damaging the printer:
• Be certain that your power source matches the rating listed
on the back of the printer. If you aren’t sure, check with your
dealer or with your local power company.
• Your printer has a grounded, 3-prong plug as a safety feature.
It will only fit into a grounded outlet. If you can not plug it
in, chances are that you have an older, non-grounded outlet.
Contact an electrician to have it replaced with a grounded
outlet. Do not use an adapter to defeat the grounding.
• Carefully read all setup and operating instructions. Be sure
to save all documents for future reference.
• Read and follow all warning and instruction labels on the
printer itself.
• To avoid damaging the power cord, do not put anything on it
or place it where it will be walked on. If the cord becomes
damaged or frayed, replace it immediately.
• Place your printer on a firm, solid surface. If you put in on
something unsteady, it might fall and be damaged.
• Avoid overheating the printer. Do not place it on a soft
surface, such as a rug, sofa, or bed. The vents may be
blocked, causing the printer to overheat.
• 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
• The printer must be installed near a power outlet which will
remain easily accessible.
equipment is plugged into has a rating above 15 amperes.
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• Unplug the printer before you clean it. Use only a damp
cloth. Do not use liquid or aerosol cleaners.
• If anything happens that indicates that your printer is not
working properly or has been damaged, unplug it
immediately. Then, follow the procedures in “Service and
Support” for having your printer serviced.
• To protect your printer from overheating, make sure no
openings on the printer are blocked. Do not 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.
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 printhead can get quite hot when it has been printing for
a length of time. Do not touch the printhead until it has had a
chance to cool off.
– The printer has been dropped or its cabinet has been
damaged.
• Do not use your printer near water. Do not spill liquid of any
kind into it.
– The printer doesn’t function normally when you’re
following the operating instructions.
• Do not poke anything into the ventilation slots on the sides of
the printer. You could get a shock or cause a fire.
• Aside from the routine maintenance described in this
document, 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
document. You might cause damage requiring extensive
repair work.
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Contents
Forms Tear-Off OFF (Default Setting) ...................................... 14
Setting Top of Form (TOF):
Safety............................................................................ 3
Chapter 1: Introduction ............................................. 7
Printer Features............................................................................... 7
Forms Tear-Off Set to ON .......................................................... 15
Temporarily Changing the Top of Form Position ...................... 16
Resetting Top of Form to the Factory Default ........................... 16
Forms Tear-Off Feature ................................................................ 17
Potential Problems with Software Packages .............................. 17
Changing the Forms Tear-Off Setting ........................................ 18
Manual Forms Tear Off .............................................................. 18
Paper Park..................................................................................... 18
Changing Paper Paths................................................................... 19
Continuous Forms to Single Sheets ........................................... 19
Single Sheets to Continuous Forms ........................................... 20
Printhead Gap ............................................................................... 21
Print Quality ................................................................................. 22
Typefaces: LQ Mode .................................................................... 23
Character Pitch ............................................................................. 24
Printer Reset ................................................................................. 25
Emulations .................................................................................... 25
Chapter 2: Helpful Hints ........................................... 8
Saving Money: Forms Tear-Off...................................................... 8
Saving Time .................................................................................... 8
Internet Support ........................................................................... 8
Paper Park .................................................................................... 8
Operation Tips ................................................................................ 9
Top of Form (TOF) ...................................................................... 9
Turning the Platen Knob .............................................................. 9
Controlling Access to the Printer ................................................. 9
Chapter 3: Using Your Printer ................................ 10
Parts Identification: Rear Feed (Continuous Forms).................... 10
Parts Identification: Top Feed (Single Sheets) ............................. 11
Top of Form (TOF) ....................................................................... 12
Top of Form (TOF) and Forms Tear-Off.................................... 12
Determining if Forms Tear-Off is Off or On .............................. 13
Setting Top of Form (TOF):
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Chapter 4: Menu Mode ............................................ 26
Menu Mode Keys ....................................................................... 26
Entering and Exiting Menu Mode ............................................. 27
Resetting the Menu to the Factory Defaults .............................. 27
Printing the Menu Settings......................................................... 27
Changing the Menu Settings ...................................................... 28
Menu Settings Table ................................................................... 29
Explanations of Menu Items ...................................................... 35
Appendix B: Printer Control Codes ....................... 68
Epson LQ Commands .................................................................. 68
IBM Proprinter X24e / XL24e and IBM X24e AGM / XL24e
AGM Commands ......................................................................... 72
Appendix C: Specifications...................................... 75
Appendix D: Installation.......................................... 81
Location ........................................................................................ 81
Unpack.......................................................................................... 81
Install the Ribbon Cartridge ....................................................... 84
Power Connection ........................................................................ 85
Computer Connections ................................................................. 85
Parallel (LPT): IEEE 1284 ......................................................... 85
USB: Specification 1.1 Compliant ............................................. 86
Loading Paper............................................................................... 86
Testing the Printer......................................................................... 87
Font Sample Test ........................................................................ 87
Rolling ASCII Test ..................................................................... 88
Hexadecimal Dump Mode ......................................................... 89
Emulations .................................................................................... 89
Printer Drivers .............................................................................. 89
Loading the OKI Driver ............................................................. 90
Using a Compatible Driver ........................................................ 90
Chapter 5: Maintenance........................................... 41
Replacing the Ribbon Cartridge ................................................... 41
Loading Paper............................................................................... 43
Rear Feed ................................................................................... 43
Top Feed (Single Sheets) ........................................................... 52
Clearing Paper Jams ..................................................................... 54
Rear-Feed Paper Jams ................................................................ 54
Rear-Feed, Repeating Paper Jams.............................................. 55
Single-Sheet Paper Jams ............................................................ 57
Cleaning the Housing ................................................................... 58
Chapter 6: Troubleshooting ..................................... 59
General Information ..................................................................... 59
Problems / Solutions ..................................................................... 60
Appendix A: Parts & Accessories ............................ 65
Purchasing Parts & Accessories ................................................... 65
Replacement Parts ........................................................................ 66
Accessories ................................................................................... 67
Index .......................................................................... 91
6 Microline 490/491 User’s Guide
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Chapter 1: Introduction
Printer Features
Oki Data on the Internet
• Super reliable, durable operation: 20,000 hours Mean Time
Between Failures (MTBF) at 25% duty cycle and 35% page
density
The Oki Data Web Sites provide the most current information
available on your printer.
On-line documents are available for viewing and downloading
via Oki Data’s Web Sites.
• Advanced paper handling, with built-in rear push tractor and
zero-tear forms capability.
You may reach Oki Data via the Internet at:
• Blazing print speeds, in characters per second
(depending on characters per inch selected):
• my.okidata.com
– High Speed Draft Mode: 420 cps (10 cpi)
– Utility Mode: 269 to 472 cps
– Letter Quality Mode: 105 to 220 cps
• This rugged 24-pin printer can meet the needs of harsh and
demanding environments.
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Chapter 2: Helpful Hints
Saving Money: Forms Tear-Off
Saving Time
The Forms Tear-Off feature allows a printed continuous forms
page to be torn off without wasting paper or adjusting the
printer.
Internet Support
Oki Data provides support via the Internet:
Data’s products and services.
When printing stops, Forms Tear-Off automatically moves the
paper to align the perforation with the tear bar (located under
the access cover), after a time interval which you select through
the menu.
site designed to help you personalize the information and
service you get from Oki Data.
Paper remains in the tear-off position until the printer receives
more data. Then, the paper moves back down for printing.
Paper Park
Note: This feature is normally turned off.
Your printer’s paper park feature allows you to print a single
sheet (cut-sheet) page without removing continuous feed paper
from the printer.
Important!
Forms Tear-Off and the Top of Form settings interact. For
more information, see “Top of Form (TOF) and Forms Tear-
Off” in Chapter 3: Using Your Printer.
For more information, see “Paper Park” in Chapter 3: Using
Your Printer.
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Turning the Platen Knob
Operation Tips
Top of Form (TOF)
Important!
Always turn the printer off before turning the platen knob! If
you turn the platen knob when the printer is on, the Top of
Form misaligns.
Top of Form (TOF) sets the print start position. The factory
default is 1" from the top.
The Top of Form can be changed in increments of 1/180",
either for a single print job or set to a new default. The overall
amount of adjustment is limited to avoid paper jams.
Controlling Access to the Printer
You can control access to the printer by changing the setting for
the Operator Panel Function in the Menu from Full Operation
(the factory default) to Limited Operation.
The first line prints at the red line of the plastic paper shield (1)
on the printhead.
When Limited Operation is selected, the PRINT QUALITY and
CHARACTER PITCH keys don’t work. This prevents these
settings from being changed from the control panel when
several people are using the printer.
For more information, see “Changing the Menu Settings” in
Chapter 3: Using Your Printer.
For more information, see “Top of Form (TOF)” in Chapter 3.
Helpful Hints 9
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Chapter 3: Using Your Printer
Note: For rear feed, the paper lever must be forward.
Parts Identification: Rear Feed
(Continuous Forms)
Note: The serial number of your printer is on a label on the
back, beside “S/N.”
Sheet Guide
Paper Lever
On-Off Switch
Platen Knob
Control Panel
Acoustic Cover
Access Cover
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Note: For single-sheet printing, the paper lever must be in the
middle position.
Parts Identification: Top Feed
(Single Sheets)
Paper Guides
Sheet Guide
Paper Lever
On-Off Switch
Platen Knob
Control Panel
Acoustic Cover (open)
Using Your Printer 11
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Top of Form (TOF) and Forms Tear-Off
Note: Your software may print the first line of print above or
below where TOF is set. You may need to adjust the
TOF to meet your software’s requirements.
Top of Form (TOF)
Important!
If you turn the platen knob when the printer is on, the Top of
Form misaligns. Always shut the printer off before turning
the platen knob!
The Top of Form and Forms Tear-Off settings of your printer
interact. How you set the Top of Form depends on whether
Forms Tear-Off is On (set to 500 ms, 1 sec, or 2 sec) or OFF
(the factory default setting).
Note: The factory default setting for the Top of Form (where
the printing should begin) is 1" down from the top of the
page.
Top of Form sets the print start position for the printer. It is
adjustable in increments of 1/180 of an inch. The amount of
adjustment is limited to avoid paper jams.
The first line prints at the red line of the plastic paper shield (1)
on the printhead.
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To use the TEAR key:
1 Make sure paper is loaded.
Determining if Forms Tear-Off is Off or On
There are two ways to determine the status of the Forms
Tear-Off menu setting:
2 Press TEAR (3).
• If the paper moves up, Forms Tear-off is off.
• If the paper moves down, Forms Tear-off is on.
• Print the Menu.
• Use the TEAR key.
To print the Menu:
1 Make sure paper is loaded.
2 Hold SHIFT (2), then press SEL (1) to enter the Menu Mode.
3 Press PARK (4) to print the menu.
4 Look for the Form Tear-Off setting in the paper feed group
you are using (Rear Feed, Bottom Feed or Top Feed—Forms
Tear–Off appears in the Top Feed group only if the optional
Roll Paper Stand is installed).
Using Your Printer 13
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With paper loaded and the printer on and selected:
Setting Top of Form (TOF):
Forms Tear-Off OFF (Default Setting)
Important!
If you turn the platen knob when the printer is on, the Top of
Form misaligns. Always turn the printer off before turning
the platen knob!
1 Press SEL | MENU (1) to take the printer off line.
The SEL light goes out.
2 Press and hold SHIFT (2), then
Note: When you begin pressing the Micro Feed key, the
printhead will move to the right.
• Press LF | Micro Feed Down (3) to set the TOF higher (the
paper moves down).
• Press FF/LOAD | Micro Feed Up (4) to set the TOF lower
(the paper moves up).
3 When you have the TOF set where you want it, press and
hold SHIFT (2), then press QUIET/TOF (7) to engage the new
setting.
The printhead moves back to the left margin.
Note: The first line prints at the red line (1) of the plastic
paper shield on the printhead.
4 Press SEL/MENU (1) to save the setting and place the printer
back on line.
Note: To reset the Top of Form to the factory default, see
“Resetting Top of Form to the Factory Default” later in
this chapter.
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2 Press SHIFT (2) and QUIET/TOF (7) to reset the current TOF.
Setting Top of Form (TOF):
Forms Tear-Off Set to ON
Important!
If you turn the platen knob when the printer is on, the Top of
Form misaligns. Always turn the printer off before turning
the platen knob!
3 Press FF/LOAD (4) to load the paper.
4 Wait briefly until the paper moves up to the tear position,
then press and hold TEAR (5).
The paper moves to the current TOF.
5 Keep holding TEAR, then press and hold SHIFT (2) and
release TEAR.
6 Continue to hold SHIFT, then
Note: When you begin pressing the Micro Feed key, the
printhead will move to the right.
• Press LF | Micro Feed Down (3) to set the TOF higher (the
paper moves down).
• Press FF/LOAD | Micro Feed Up (4) to set the TOF lower
(the paper moves up).
Note: The first line prints at the red line (1) of the plastic
paper shield on the printhead.
7 When you have the TOF set where you want it, press and
hold SHIFT (2), then press QUIET/TOF (7) to engage the new
setting.
The printhead moves back to the left margin.
8 Press SEL/MENU (1) to save the setting and place the printer
back on line.
With paper loaded and the printer on and selected:
Note: To reset the Top of Form to the factory default, see the
next page.
1 Press PARK (6) to park the paper.
The SEL light goes off and the red alarm light comes on.
Using Your Printer 15
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Temporarily Changing the Top of Form
Position
Important
Resetting Top of Form to the Factory Default
The factory default setting for the Top of Form (where the
printing should begin) is 1" down from the top of the page.
To reset the Top of Form to the factory default:
1 Remove paper from the paper path.
2 Turn the printer off.
Do not use the platen knob to change the Top of Form. If you
turn the platen knob when the printer is turned on, the Top of
Form misaligns. Always turn the printer off before turning
the platen knob!
3 Press and hold PARK + QUIET/TOF while turning on the
To move the Top of Form position lower for one page only:
1 Press SEL to deselect the printer.
printer.
4 Reload paper.
2 Press LF to lower the position of the Top of Form.
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Notes: The status of the Forms Tear-Off menu setting affects
how you set the Top of Form: see “Top of Form (TOF)
and Forms Tear-Off” earlier in this chapter.
Forms Tear-Off Feature
Note: This feature is normally turned off. To use Forms
Tear-Off, you must enter the menu and change the
setting to the desired time interval (see next page).
Do not use Forms Tear-Off with labels or multipart
forms!
The Forms Tear-Off feature allows a printed continuous forms
page to be torn off without wasting paper or adjusting the
printer. It can be used for rear feed continuous forms, bottom
feed continuous forms (with the optional push tractor installed)
or for top feed roll paper (with optional roll paper stand
installed).
Forms Tear-Off cannot be used when the optional pull
tractor is engaged.
Potential Problems with Software Packages
If Forms Tear-Off is set to On and the software package you are
using “pauses” for a long enough interval while sending data to
the printer, Forms Tear-Off may be activated. No data is lost,
but this causes uneven print registration due to the paper
movement.
When the printer is turned on, the paper feeds to the tear-off
position.
When data is received, the paper automatically moves down to
the print position (TOF) and printing begins.
If this occurs, use the menu to turn off this feature, then use the
TEAR key to move the paper up to the tear position manually
(see next page).
Note: You can also move the paper down to the print position
manually by pressing TEAR.
When printing stops, Forms Tear-Off automatically moves the
paper to align the perforation with the tear bar (located under
the access cover), after the time interval which you selected
through the menu.
Paper remains in the tear-off position until the printer receives
more data. Then, the paper moves back down for printing.
Using Your Printer 17
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Changing the Forms Tear-Off Setting
Note: The default setting for Forms Tear-Off is OFF.
Manual Forms Tear Off
If you don’t wish to engage the Forms Tear-Off feature, you
can advance
• rear-feed continuous forms loaded on the built-in tractor
or
• bottom-feed continuous forms loaded on the optional push
tractor
up to the tear off position manually by pressing TEAR (5).
Paper Park
To change the Forms Tear-Off setting:
Important!
1 Press SHIFT (2) + SEL (1).
Never park labels!
2 Press GROUP (3) repeatedly until the Rear Feed or Bottom
Feed group shows in the first column of the printed line,
depending on which paper feed you are using,
Paper park allows you to switch to single-sheet printing without
removing continuous feed paper from the printer.
When you wish to print single sheets, simply press PARK (6) to
retract the continuous form paper from the paper path, then lift
the sheet guide, load the sheet and send the print job.
3 Press ITEM (4) repeatedly until Form Tear-Off appears in the
second column:
Rear Feed
Form Tear-Off
Off
4 Press SET (5) until the time interval you wish to select
appears in the third column:
Rear Feed
Form Tear-Off
1 Sec
5 Press SHIFT (2) + SEL (1) to exit Menu Mode and save the
setting.
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4 Move the paper lever (1) to the middle position marked
Changing Paper Paths
“TOP.”
Continuous Forms to Single Sheets
1 Tear off any printed pages, then press PARK.
2 Raise the sheet guide (1) to the single-sheet feed position.
5 Adjust the paper guides (1) for the size paper you are using,
then place a sheet of paper in the sheet guide.
3 Pivot the wire feed guide into the sheet guide.
Using Your Printer 19
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4 Move the paper lever to the appropriate position.
Single Sheets to Continuous Forms
• Rear feed:
1 Press FF/LOAD to remove the single-sheet paper.
2 Lower the sheet guide into the continuous-forms position.
• Bottom feed:
3 Swing the wire feed guide over onto the pull-up roller.
5 If necessary, load continuous-form paper.
6 Press FF/LOAD.
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To adjust the gap, open the access cover and move the blue
lever (1) to the recommended setting from the table.
Printhead Gap
The printhead gap is the distance between the printhead and the
platen.
CAUTION!
Make sure the printer is turned off before you open the access
cover.
Setting
Media
1
2
3
4
5
Regular paper
2-part form (with carbon)
3-part form (with carbon)
4-part form (with carbon)
Envelopes or extra thick paper
Note: When the head gap is set to 2, 3, 4 or 5, the printer
automatically slows down for better print quality with
multipart forms.
Using Your Printer 21
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Press PRINT QUALITY (1) to select:
Print Quality
LQ: Letter Quality
[LQ light on]
Important!
Front panel settings for print quality and character pitch are
normally overridden by software commands.
• Highest quality, slowest speed
• Choice of 7 typefaces
Utility
[UTILITY light on]
• Medium quality, medium speed
• Gothic typeface only
HSD: High Speed Draft
[LQ and UTILITY lights both on]
• Lowest quality, highest speed
• Gothic typeface only
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Typefaces: LQ Mode
Typeface
Courier
Gothic
Lights on
Important!
LQ and COURIER
Front panel settings for print quality and typeface are
normally overridden by software commands.
LQ and GOTHIC
Orator
LQ and ORATOR
Prestige
Roman
Swiss
LQ and PRESTIGE
LQ, COURIER, and GOTHIC
LQ, PRESTIGE and ORATOR
LQ, COURIER and PRESTIGE
Swiss Bold
To select the typeface you wish to use, press PRINT QUALITY
(1) until the appropriate front panel lights are on:
Using Your Printer 23
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Character Pitch
Important!
Front panel settings for character pitch are normally
overridden by software commands.
Character pitch determines how many characters will print on
each line. You can choose a specific fixed width for each
character of from 10 to 20 characters per inch (CPI). The
higher cpi settings are often used for spreadsheets.
In LQ mode, you can select proportional (PROP) which sets
character widths based on the character itself: e.g., the letter i is
assigned a narrower width than the letter m. This provides a
more polished, typeset appearance.
Set the character pitch by pressing CHARACTER PITCH/RESET
(1) until the LED beside the desired setting glows.
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Printer Reset
Emulations
• Epson® LQ — factory setting
• IBM® Proprinter
Clearing some error conditions requires that you reset
(reinitialize) the printer. To do this:
• IBM® AGM
1 Press and release SEL (1) to take the printer off-line.
The SEL light goes out.
Changing Emulations
1 Make sure paper is loaded.
2 Press and hold SHIFT (2), then press RESET/CHARACTER
PITCH.
2 Press and hold SHIFT (2), then press SEL (1).
Important!
3 Press LF (3).
Pressing SHIFT + RESET reinitializes the printer, but does not
affect any menu settings and does not reset the printer to the
factory defaults. For information on resetting the printer to
the factory defaults, see “Resetting the Menu to the Factory
Defaults” later in this chapter.
The following line prints:
Printer Control Emulation Mode EPSON LQ
4 Press TEAR (4) repeatedly until the emulation you wish to
select prints in the right-hand column.
5 Press and hold SHIFT (2), then press SEL (1) to save your
setting and exit the Menu Mode.
Using Your Printer 25
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Chapter 4: Menu Mode
Note: Please print the current Menu Mode settings before you
reset or change them. This is the only way to have a
record of the settings.
GROUP Key
Prints the next Group in the Menu.
With the SHIFT key, prints the previous Group.
In Menu Mode, you use the front panel keys to change the
defaults for the printer parameters. The changes you make in
the Menu Mode are automatically saved when you exit the
Menu Mode and are retained, even when you turn the printer
off.
ITEM Key
Prints the next Item in the Group.
With the SHIFT key, prints the previous Item in the Group.
SET Key
Prints the next setting for an Item.
Menu Mode Keys
With the SHIFT key, prints the previous setting for an Item.
PRINT Key
Prints a copy of all the Menu settings.
With the SHIFT key, prints the current settings for the
Group selected.
MENU Light
Glows when the printer is in the Menu Mode.
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Entering and Exiting Menu Mode
Printing the Menu Settings
Printing the Current Menu Settings
1 Make sure paper is loaded in the printer.
To enter or exit the Menu Mode, hold SHIFT while pressing
SEL.
2 Press and hold SHIFT, then press SEL to enter the Menu
Resetting the Menu to the Factory Defaults
Note: Please print the current Menu Mode settings before you
reset or change them. This is the only way to have a
record of the settings.
Mode.
3 Press PRINT (PARK key).
Printing All Menu Settings
To print out a listing of the settings for all menu items,
regardless of the emulation selected or the accessories installed:
To reset the Menu to the standard settings (factory defaults):
1 Turn the printer off.
1 Make sure paper is loaded in the printer.
2 Press SEL + LF while turning the printer on.
2 Press and hold SHIFT, then press SEL to enter the Menu
Mode.
3 Press and hold SHIFT, then press PRINT QUALITY.
Menu Mode 27
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Changing the Menu Settings
Note: Please print the current Menu Mode settings before you
reset or change them. This is the only way to have a
record of the settings.
1 Press and hold SHIFT, then press SEL to enter the Menu
Mode.
2 Use the GROUP, ITEM and SET keys to make your changes:
a Press GROUP until the Group you wish to change appears
in the first column.
b Press ITEM until the Item you wish to change appears in
the second column.
c Press SET until the setting you want appears in the third
column.
3 Press and hold SHIFT, then press SEL to exit the Menu Mode
and save your settings.
Important!
If you turn off the printer without first exiting the Menu
Mode, the changes you have made will be lost.
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Menu Settings Table
For a complete explanation of each menu item, see “Explanations of Menu Items” later in this chapter.
The table below shows the items which may appear in the menu. Settings which are engaged at the factory (defaults) are set in bold
italic. Some groups or entries will only appear when a specific emulation is engaged, as noted.
Group
Item
Settings (Defaults are set in bold italic)
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, HSD
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, British, Danish I, Swedish, Italian, Spanish I,
Japanese, Norwegian, Danish II, Spanish II, Latin American, French Canadian,
Dutch, Publisher
Zero Character
Code Page
Slashed, Unslashed
USA, Canada French, Multilingual, Portugal, Norway, BRASCII, Abicomp,
Multilingual 858, ISO 8859-15
Menu Mode 29
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Menu Settings Table (Continued)
Group
Item
Settings (Defaults are set in bold italic)
Rear Feed
Line Spacing
6 LPI, 8 LPI
Form Tear-Off
Off, 500 ms, 1 sec, 2 sec
Skip Over Perforation
Page Width (wide model)
Page Length
No, Yes
13.6", 8"
11", 11-2/3", 12", 14", 17", 5", 3", 3.25", 3.5", 4", 5.5", 6", 7", 8", 8.5"
Bottom Feed
Line Spacing
6 LPI, 8 LPI
Form Tear-Off
Off, 500 ms, 1 sec, 2 sec
Skip Over Perforation
Page Width (wide model)
Page Length
No, Yes
13.6", 8"
11", 11-2/3", 12", 14", 17", 5", 3", 3.25", 3.5", 4", 5.5", 6", 7", 8", 8.5"
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Menu Settings Table (Continued)
Group
Item
Settings (Defaults are set in bold italic)
Top Feed
Line Spacing
6 LPI, 8 LPI
Form Tear-Off*
Bottom Margin
Page Width (wide model)
Page Length
Off, 500 ms, 1 sec, 2 sec
Valid, Invalid
8", 13.6"
11", 11-2/3", 12", 14", 17", 5", 3", 3.25", 3.5", 4", 5.5", 6", 7", 8", 8.5"
500 ms, 1 sec, 2 sec
Wait Time
Page Length Control
by MENU Setting, by Actual Page Length
Set-Up
Graphics
Bi-directional, Uni-directional
1 Line, 32K, 64K, 128K
No, Yes
Receive Buffer Size
Paper Out Override
Print Registration 1
0, range to 0.25 mmm to the right or left, set in 0.05 mm increments
• press SEL to shift registration to the left;
• press SHIFT + SEL to shift registration to the right.
Print Registration 2
0, range to 0.25 mmm to the right or left, set in 0.05 mm increments
• press SEL to shift registration to the left;
• press SHIFT + SEL to shift registration to the right.
* Appears only when the optional Roll Paper Stand is installed.
Menu Mode 31
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Menu Settings Table (Continued)
Group
Item
Settings (Defaults are set in bold italic)
Setup (cont.)
Operator Panel Function
Reset Inhibit
Full Operation, Limited Operation
No, Yes
Print Suppress Effective
Auto LF
No, Yes
No, Yes
Auto CR*
No, Yes
CSF Bin Select†
SI Select Pitch (10 cpi)*
SI Select Pitch (12 cpi)*
Time Out Print
Bin 1, Bin 2
15 cpi, 17.1 cpi
12 cpi, 20 cpi
Valid, Invalid
Auto Select
No, Yes
Graphics Speed
Centering Position
CSF Type
Low, High
DEFAULT, MODE 1, MODE 2
Wide, Narrow
Power Saving
Enable, Disable
5 min, 10 min, 15 min, 30 min, 60 min
Power Save Time
* Appears only when the IBM emulation is selected.
† Appears only when optional Cut Sheet Feeder is installed.
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Menu Settings Table (Continued)
Group
Item
Settings (Defaults are set in bold italic)
Parallel I/F
I-Prime
Buffer Print, Buffer Clear, Invalid
Pin 18
+5V, Open
Auto Feed XT*
Bi-Direction
Parity
Invalid, Valid
Enable, Disable
Serial IF†
None, Odd, Even
Serial Data 7/8 Bits
Protocol
8 Bits, 7 Bits
Ready/Busy, X/On / X/Off
Diagnostic Test
Busy Line
Baud Rate
DSR Signal
DTR Signal
Busy Time
No, Yes
SSD-, SSD+, DTR, RTS
19200 bps, 9600 bps, 4800 bps, 2400 bps, 1200 bps, 600 bps, 300 bps
Valid, Invalid
Ready on Power Up, Ready on Select
200 ms, 1 sec.
* Appears only when the Epson LQ emulation is selected.
† Appears only when the optional Serial Interface is installed.
Menu Mode 33
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Menu Settings Table (Continued)
Group
Item
Settings (Defaults are set in bold italic)
CSF Bin 1*
Line Spacing
6 LPI, 8 LPI
Bottom Margin
Page Width (Wide model)
Page Length
Valid, Invalid
8", 13.6"
11", 11-2/3", 12", 14", 17", 5", 3.5", 4", 5.5", 6", 7", 8", 8.5"
6 LPI, 8 LPI
CSF Bin 2*
Line Spacing
Bottom Margin
Page Length
Valid, Invalid
11", 11-2/3", 12", 14", 17", 5", 3.5", 4", 5.5", 6", 7", 8", 8.5"
* Appears only when the optional Cut Sheet Feeder is installed.
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Auto Select, Default = No
Explanations of Menu Items
Determines whether or not your printer will automatically be
selected after you load in paper. With the factory default
engaged, the printer will be deselected so that you can set the
Top of Form. If you always use the same Top of Form position,
change the setting to Yes.
These explanations are in alphabetical sequence to make it
easier to look them up. Some items only appear when optional
accessories are installed; others appear in several groups in the
menu.
Auto CR, Default =No
Bi-direction, Default = Enable
Change this setting if you wish to disable bidirectional
transmission (PnP) in Nibble mode.
IBM Only. If you want the printer to automatically add a
carriage return when a Line Feed is received at the end of a
line, change the setting to Yes.
Bottom Margin, Default = Valid
Change to Invalid if you want the printer to ignore the bottom
margin setting.
Auto LF, Default = No
If your printout is consistently double spaced, select No; if it
overprints, select Yes.
CAUTION!!
Auto Feed XT, Default = Invalid
Setting the Bottom Margin to Invalid can cause loss of data
and damage the printhead by allowing printing without paper.
Epson Only. In the Epson emulation, 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: this item eliminates this potential
problem. If your system uses pin 14 of the parallel interface to
control automatic line feed, change the setting to Valid.
Menu Mode 35
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Busy Line, Default = SSD-
Code Page, Default = USA
Appears only when the optional Serial Interface is installed. If
Ready/Busy protocol (factory default) is selected, you can
choose which line your system monitors for a busy signal:
Choose the Code Page character set you wish to use: USA,
Canada French, Multilingual, Portugal, Norway, BRASCII,
Abicomp, Multilingual 858, or ISO 8859-15.
• SSD -9V, select SSD-
• SSD +9V, select SSD+
• DTR -9V, select DTR
• RTS -9V, select RTS
CSF Bin Select, Default = Bin 1
Appears only when the optional Dual-Bin Cut Sheet Feeder is
installed. Use this to switch to Bin 2 as the default.
CSF Type, Default = Wide
To avoid paper jams, change this setting to Narrow if you are
using the optional Cut Sheet Feeder on the wide model ML491
printer.
Busy Time, Default = 200 ms
Appears only when the optional Serial Interface is installed.
Sets the length of the busy signal when the Ready/Busy
protocol (factory default) is engaged,
Diagnostic Test, Default = No
Appears only when the optional Serial Interface is installed.
Select yes to perform a diagnostic test of the serial interface.
Centering Position, Default = DEFAULT
Used to limit printhead travel when printing narrow columns.
DSR Signal, Default = Valid
• Select Mode 1 for the narrow carriage printer.
Appears only when the optional Serial Interface is installed.
Used with the Ready/Busy protocol (factory default) to select
the way your system handles the DSR signal.
• Select Mode 1 or Mode 2 for the wide carriage printer.
Character Set, Default = IBM Set I
Use this to switch character sets to IBM Set II
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DTR Signal, Default = Ready on Power Up
I-Prime, Default = Buffer Print
Appears only when the optional Serial Interface is installed.
Change to Ready on Select if the DTR signal is required when
the printer is selected (leave as Ready on Power Up if the DTR
signal is required when the printer is turned on).
Determines what the printer will do when it receives the
I-Prime signal from the software.
• Buffer Print: prints out the buffer contents before resetting.
• Buffer Clear: dumps the buffer contents immediately.
Emulation Mode, Default = Epson LQ
Selects the printer command set (emulation) you want to
engage.
• Invalid: causes the printer to ignore the I-Prime command.
Select this setting if you wish to enter settings through the
printer’s control panel which will not be automatically
overridden by the software’s settings when the I-Prime
signal is sent.
Form Tear-Off, Default = Off
Choose 500 ms, 1 sec, or 2 sec to turn the Form Tear-Off
feature on and to set the time interval for the printer to wait
before advancing the paper.
Language Set, Default = American
Replaces certain standard symbols with special characters used
in foreign languages.
Graphics, Default = Bi-directional
Change to uni-directional graphics for better registration, but
slower printing. With this set for bi-directional, you can
optimize the registration using the Print Registration setting in
the Menu.
Line Spacing, Default = 6 lpi
Change to 8 lines per inch (lpi) to get more lines on a page.
Graphics Speed, Default = Low
Change to High for faster printing when optimum print quality
is not an issue.
Menu Mode 37
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Operator Panel Function, Default = Full Operation
Change to Limited Operation to deactivate the PRINT QUALITY
and CHARACTER PITCH buttons, so that these features can
only be controlled through your software. This prevents these
from being changed from the control panel when several
people are using the printer.
Page Width, Default = 8"
Wide carriage model only. Change to 13.6" to print on wide
paper.
Paper Out Override, Default = No
Senses when less than 1" (25 mm) of paper remains and stops
printing. Change to Yes to override the sensor and print closer
to the bottom of the page.
Important!
This feature also prevents access to the Menu. To access the
Menu in these circumstances, turn the printer off, then hold
down the SEL key while turning on the printer.
Caution!!
Engaging Paper Out Override can cause loss of data and
damage the printhead by allowing printing without paper.
Page Length, Default = 11"
Parity, Default = None
Selects the length of the paper you are using. This enables the
printer to keep track of the initial printing position (TOF) on
each page.
Appears only when the optional Serial Interface is installed.
Selects the type of parity your system uses: None, Odd or
Even.
Page Length Control, Default = by Menu Setting
Change the setting to “by Actual Page Length” if you wish to
print on single-sheets longer than 17 inches. When “by Actual
Page Length” is selected, the menu setting for Top Feed Page
Length is ignored.
Pin 18, Default = +5V
Sets the signal on pin 18 to +5 volts or open.
Pitch, Default = 10 cpi
Choose the character width, in characters per inch (cpi).
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Power Save Time, Default = 5 min
Proportional Spacing, Default = No
Change the setting to Yes to engage proportional spacing of
characters.
Sets the interval the printer waits for more data before it goes
into the power save mode. Power Saving must be set to enable
(the factory default) for this to be effective.
Protocol, Default = Ready/Busy
Appears only if the optional Serial Interface is installed.
Change to X-ON / X-Off if that is the type of protocol your
system uses.
Power Saving, Default = Enable
Change to Disable if you wish to prevent the printer from
entering the Power Save mode after the selected interval.
Print Mode, Default = LQ Courier
Receive Buffer Size, Default = 64K
Choose the quality and typeface of printing.
Selects the amount of memory devoted to holding received
data. Choosing 1 Line will tie up your computer while printing,
but if you abort the print job, the printer will stop much sooner.
Print Registration, Default = 0
Change the setting as required to obtain the best registration for
bi-directional printing.
Reset Inhibit, Default = No
Select Yes if you wish the printer to ignore the reset command
sent by software. This prevents your software from changing
the settings you make through the front panel controls or
through printer commands.
Print Suppress Effective, Default = Yes
If your system uses the DC1 and DC3 codes for something
other than the print suppress mode, change the setting to No.
Note: This will also prevent your software from clearing out
existing settings when you finish printing one document
and switch to another.
Menu Mode 39
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Serial Data 7/8 Bits, Default = 8 Bits
Style, Default = Normal
Appears only if the optional Serial Interface is installed.
Change to 7 Bits if you systems uses a 7-bit data format.
Change to italics if you want the printed characters to be
slanted.
SI Select Pitch 10 cpi, Default = 17.1 cpi
IBM emulation only. Sets the pitch to be engaged when the
printer control panel is set for 10 cpi and the SI command is
received.
Time Out Print, Default = Valid
If your software spends a long time processing between
portions of data it feeds to the printer, change the setting to
Invalid to keep your printer from dumping the received data
while it is waiting for more.
SI Select Pitch 12 cpi, Default = 20 cpi
IBM emulation only. Sets the pitch to be engaged when the
printer control panel is set for 12 cpi and the SI command is
received.
Wait Time, Default = 1 sec
Sets the amount of time the printer will wait for more data
before moving to the form tear-off position.
Size, Default = Single
Zero Character, Default = Slashed
Change to Double for double width and height printing.
If you do not want the printer to use a slash to distinguish the
number zero from the capital letter O, change the setting to
Unslashed.
Skip Over Perforation, Default = No
Change to Yes if you want the printer to go to the next page
when it comes within 1" (25 mm) of the bottom of the page.
Keep it set to No if your software has its own page formatting
controls.
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Chapter 5: Maintenance
1 Make sure the printer is turned OFF.
Replacing the Ribbon Cartridge
Important!
2 Open the access cover and center the printhead.
Make sure you have the correct replacement ribbon for the
your printer. The wrong ribbon will not print when installed
in your printer.
Ribbon Cartridge Handling
• Leave unused ribbon cartridges in their packages until
needed.
• Careful; the ribbon ink may cause permanent stains.
• Ribbon ink on skin or clothing can usually be removed
with soap and water.
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CAUTION!
The printhead may be HOT!
5 Turn the take-up knob in the direction of the arrow to take
up any ribbon slack.
3 Swing the used ribbon cartridge up off the printhead, lift it
out, and discard it.
6 Close the access cover and turn the printer back on.
CAUTION!
If ribbon should contact the eyes:
Flush eyes with large quantities of water for 15 minutes,
keeping eyelids open with fingers. Seek medical attention.
4 Unpack the new ribbon cartridge and install it.
Important!
If ribbon should contact the skin
Do not remove the ribbon shield (1) from the ribbon!
Wash thoroughly with soap and water.
For more information
See the Material Safety Data Sheet in your Warranty,
Regulatory, and Safety Information booklet.
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Loading Rear Feed Paper from the Back of the Printer
Loading Paper
Note: These instructions assume you have ready access to the
back of the printer. If you do not, skip down to “Loading
Rear Feed Paper from the Front of the Printer.”
Rear Feed
Note: If you have any paper in the paper path, remove it
before installing rear feed paper.
1 Make sure the paper lever is forward (position marked
“REAR”).
Lock Lever
Upper Tractor Cover
Pins
2 Open the access cover (1).
Maintenance 43
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3 Grasp the sheet guide. Lift it slightly, then slide it back.
4 Pivot the sheet guide forward and gently rest it against the
roller assembly.
Careful!
If you push the sheet guide too hard against the roller
assembly, it may dislodge it. If it does, be sure to reseat the
roller assembly before continuing.
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5 From the back of the printer, locate the tractors (1).
6 Open the lock levers (1) and move the right tractor (as
viewed from the back of the printer) to the reference mark
(2) matching the width of the paper you are loading. Then
close the lock lever on the right tractor:
ML491
ML490
Note: The movement of the right tractor is limited to ensure
that the paper covers the paper sensor.
7 Open the tractor covers.
Maintenance 45
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8 Place continuous forms paper on the first two pins of either
10 Adjust the left tractor until the holes in the paper are
centered on the pins then lock the lever and close the left
tractor cover.
tractor.
Important!
Note: If the paper is too loose or too tight it can cause jams.
You must keep the number of paper holes engaged on either
pin the same. If you don’t the paper will skew and jam.
9 Close the right tractor cover.
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11 Lower the sheet guide and slide it toward the front of the
12 Place the wire guide (“1” in the illustration for the step
printer until the marks align.
above) in the sheet guide on the pull-up roller assembly.
13 Press FF/LOAD.
Note: The factory default setting for the Top of Form (where
the printing should begin) is 1" down from the top of the
page. To change the setting, see “Top of Form (TOF)”
in Chapter 3.
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Loading Rear Feed Paper from the Front of the Printer
2 Open the access cover (1).
Note: These instructions assume you do not have ready access
to the back of the printer. If you do, go back to “Loading
Rear Feed Paper from the Rear of the Printer” earlier
in this chapter.
Lock Lever
Upper Tractor Cover
Pins
3 Grasp the tabs and lift off the sheet guide.
1 Make sure the paper lever is forward (position marked
“REAR”).
4 Pull up on the lock levers to release them.
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Note: The movement of the left tractor (as viewed from the
front of the printer) is restricted to ensure that the
paper covers the paper out sensor.
7 Open the tractor covers and place continuous forms paper on
the first two pins of either tractor, then close the left tractor
cover.
5 You will find reference marks (1 in illustration below) on the
Important!
printer for the two most common paper sizes:
You must keep the number of paper holes engaged on either
pin the same. If you don’t the paper will jam.
ML490:
ML491:
6 Move the left tractor to the position to match your paper size
and push back on the lever to lock it in place, then move the
right tractor to fit the width of the paper.
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8 Adjust the position of the right tractor to center the holes in
the paper on the pins. Then, close its tractor cover and push
back the lock lever. Do not stretch the paper.
9 Reinstall the sheet guide.
Note: If the paper is too loose or too tight it can cause jams.
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10Place the wire guide (1) in the sheet guide on the pull-up
11 Press FF/LOAD.
roller assembly.
Note: The factory default setting for the Top of Form (where
the printing should begin) is 1" down from the top of the
page. To change the setting, see “Top of Form (TOF)”
in Chapter 3.
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3 Open the acoustic cover (1) and raise the sheet guide to the
single-sheet position. Pivot the wire feed guide (2) up into
the sheet guide.
Top Feed (Single Sheets)
Note: If you have continuous form paper in the path, press
PARK to remove it before loading single sheets.
1 Make sure the printer is on and deselected (SEL light off).
2 Place the paper lever in the center position (marked “TOP”).
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4 Adjust the paper feed guides (1) for the width of the paper,
then place a sheet of paper in the separator. The paper will
feed into the printer.
Important!
If the paper does not feed in, remove it. Check the paper lever
position. Make sure the ALARM light is on: if it is flashing,
hold the SHIFT key and press the CHARACTER PITCH/RESET
key. Reload the sheet of paper.
Note: The factory default setting for the Top of Form (where
the printing should begin) is 1" down from the top of the
page. To change the setting, see “Top of Form (TOF)”
in Chapter 3.
Maintenance 53
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4 Lift the sheet guide (1) and reload paper. Make sure you
Clearing Paper Jams
lock the tractor covers.
Rear-Feed Paper Jams
1 Turn off the printer.
2 Use the platen knob to back the paper all the way out of the
printer.
CAUTION!
Make sure the printer is turned off before you open the access
cover.
5 Lower the sheet guide, then install the pull-up roller
3 Open the access cover (1) and remove the pull-up roller
assembly and close the access cover.
assembly (2). Remove any torn pieces of paper.
6 Turn on the printer and press FF/LOAD.
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Bits of Paper Stuck in the Paper Path
1 Turn off the printer.
Rear-Feed, Repeating Paper Jams
If the paper keeps jamming, you may have:
2 Use the platen knob to back the paper all the way out of the
• defective paper
printer.
• misaligned paper
CAUTION!
• bits of paper stuck in the paper path
Make sure the printer is turned off before you open the access
cover.
Defective Paper
Replace the paper with a fresh stack.
3 Open the access cover (1) and remove the pull up roller
assembly (2). Then grasp the tabs (3) on the sheet guide (4)
and lift it off the printer.
Misaligned Paper
1 Turn off the printer.
2 Use the platen knob to back the paper all the way out of the
printer.
3 Tear off a couple of sheets of paper, leaving a new, clean,
square-cut edge.
4 Reload the paper and turn the printer back on.
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4 Remove any torn pieces of paper.
8 Load regular paper, close and lock the tractor covers.
5 Fold some continuous-form paper over three times to make a
page four sheets thick. Then, load it on the tractors and close
and lock the covers.
9 Install the sheet guide, then install the pull-up roller
assembly and close the access cover.
6 Use the platen knob to draw the quadruple-thick page
around the platen. This brings out jammed pieces of paper.
7 Remove the paper pieces. Then, use the platen knob to back
the paper out.
10 Turn the printer on and press FF/LOAD.
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3 Open the access cover (1) and remove the pull-up roller
Single-Sheet Paper Jams
1 Turn off the printer.
assembly (2).
2 Use the platen knob to back the paper out.
4 Remove any torn pieces from around the carriage.
5 Reinstall the pull-up roller assembly and close the access
cover.
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4 Use a clean, dry cloth to dust around the carriage shaft and
Cleaning the Housing
platen. Remove any loose bits of paper.
You should clean the printer housing every six months (or after
about 300 hours of operation).
5 Reinstall the pull-up roller assembly and close the access
cover.
CAUTION!
Never use strong solvents or strong detergents on the
cabinet—they could damage the housing.
1 Turn off the printer.
2 Use the platen knob to back the paper out of the printer.
CAUTION!
Make sure the printer is turned off before you open the access
cover.
3 Open the access cover (1) and remove the pull-up roller
assembly (2).
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Chapter 6: Troubleshooting
Note: Settings in your software application will normally
General Information
override any settings in your printer driver.
Here are some general things to check before proceeding with
detailed troubleshooting.
Printer driver settings normally override settings from
the printer menu or printer front panel.
• Is the printer plugged in and turned on?
• Are the connections (power and interface) secure?
• Is the product being operated under the proper ambient
conditions?
• Does the paper being used meet the specifications for this
product?
• Is the paper properly installed?
• Is the ribbon properly installed?
• Is an Oki ribbon being used?
• Is the printhead gap correctly set?
• Are the correct printer drivers being used for the printer?
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The I-Prime signal will automatically override any front panel
settings you have made. To eliminate this problem, enter the
Menu Mode, go to the Parallel Interface group and change the
setting for I Prime to Invalid.
Problems / Solutions
Problem
My word processor files do not print the way I have the menu
and front panel set.
For more information on changing menu settings, see
“Changing the Menu Settings” in Chapter 4.
Solution
Remember:
Problem
Nothing happens when I turn on the printer.
• Settings in your software application can override settings in
your printer driver.
Solution
• Your printer driver settings can override any settings from the
printer menu or printer front panel.
Check the power cord connection to the outlet and to the
printer. If you are using a power strip, make sure it is turned on,
and that the fuse hasn’t blown or that the circuit breaker hasn’t
tripped.
Before sending a file to the printer, many word processors send
either an “initialization string” or an I-Prime signal to the
printer.
The initialization string contains codes that override the panel
and menu settings. To change your printer to ignore the reset
code, enter the Menu Mode, go to the Set-Up group and change
the setting for Reset Inhibit to Yes.
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Problem
Problem
The printer does not print when the computer sends data.
I'm getting strange symbols, incorrect fonts, etc., when I try to
print a document.
Solutions
Solutions
1 Is the SEL light on? If not, press the SEL key.
1 Check to be sure that the printer driver you have selected in
your software matches the printer emulation.
2 Check that the interface cable is securely connected to both
the printer and the computer.
• Press SHIFT and SEL keys, then press GROUP key.
3 If you have the optional serial interface board installed,
check to be sure that it is firmly seated in the printer.
• This will print a line showing the emulation you have
selected.
2 If you have embedded any printer commands in your
software, check to be sure that you entered them correctly.
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Problem
Problem
Ink smears on the paper when I print narrow columns.
I've installed a new ribbon and the printing is smeared and
streaked.
Solution
Solution
This may be caused by excessive printhead travel from the
centering position. Enter the Menu and set the Centering
Position to MODE 1. See “Using Your Printer, Menu Mode.”
The ribbon shield (1) is either loose or missing.
For the wide-carriage printer, if MODE 1 doesn't work, try
setting the Centering Position to MODE 2.
Remove the ribbon cartridge and check the ribbon shield.
• If it is loose, secure it.
• If it is missing, find it and install it.
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Problem
Problem
There are dots missing in my printouts.
The ALARM light is on and the Character Pitch 10 light is
flashing.
Solution
Solution
The head gap may not be set correctly. Try moving the headgap
lever to a lower setting. If that doesn’t help, the printhead may
be damaged; call for service.
This indicates that the paper lever is set at the wrong position
for the paper you are trying to use. Move it to the proper
setting.
Problem
Problem
The ALARM light is flashing.
The ALARM light is on and the Character Pitch 15 light is
flashing.
Solution
Try turning the printer off and then back on again. If the light
still blinks, call for service.
Solution
This indicates a paper jam. Press the SEL key and correct the
paper jam situation. See “Clearing Paper Jams,” in Chapter 4.
Troubleshooting 63
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Problem
Problem
The printer needs paper. The ALARM is not on. I can’t load
paper.
The Print Quality and Character Pitch keys on the front panel
don't work.
Solution
Solution
1 Press and release the SEL key.
The Operator Panel Function in the printer menu can be used to
disable these buttons (Limited Function). 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.
2 Press and hold the SHIFT key and press the RESET /
CHARACTER PITCH key.
3 The ALARM light comes on and you can now load paper.
Check with your system manager before changing any menu
settings.
Problem
Continuous-form paper sticks to the sheet guide.
Solution
In cold dry weather, static charges can build up and make the
paper cling to the sheet guide. Try moving the paper guides
together so that the paper rests on the guides rather than on the
separator.
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Appendix A: Parts & Accessories
• In the United States, purchase directly from Oki Data
Purchasing Parts & Accessories
- Via the Internet
Before you purchase, know your printer model number (see the
front of the unit) and have the correct part number and
description of the item. Item descriptions and part numbers are
provided in this section.
- Via telephone
• Consult the dealer where your purchased your printer.
Order toll-free by phone at 1-800-654-3282
(1-800-OKI-DATA) using VISA®, MasterCard®, or
AmEx®.
• Locate an Authorized Oki Data Reseller by visiting one of
our web sites
http://my.okidata.com (allows you to register your
• In Canada, call 888-309-4570.
product and personalize your own support needs)
http://www.okidata.com (provides general information)
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Item
Part Number
Replacement Parts
Both Models
Ribbon Cartridge ( ) ------------------------------- 42377801
Platen Knob ( ) ------------------------------------- 51902220
Power Cord ( ) ------------------------------------- 56631801
Model ML490
Printhead ( ) ---------------------------------------- 42124201
Access Cover ( ) ----------------------------------- 42115401
Sheet Guide ( ) ------------------------------------- 51009509
Pull-Up Roller Assembly ( ) --------------------- 42044701
Model ML491
Printhead ( ) ---------------------------------------- 42124201
Access Cover ( ) ----------------------------------- 42115301
Sheet Guide ( ) ------------------------------------- 51009410
Pull-Up Roller Assembly ( ) --------------------- 42045701
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Accessories
Option
Part Number
Model ML490
Pull Tractor, Top-Mount ( )----------------------- 70030501
Push Tractor, Bottom-Mount ( ) ----------------- 70030701
Roll Paper Stand ( ) ------------------------------- 70023301
Model ML491
Pull Tractor, Top-Mount ( )----------------------- 70030601
Push Tractor, Bottom-Mount ( ) ----------------- 70030801
Both Models
Cut Sheet Feeder ( ) ------------------------------- 70030101
Serial Interface ( ) --------------------------------- 70012801
OkiLAN 6120i 10/100 Base-T, Ethernet
Internal Print Server (not shown) --------------- 70046501
OkiLAN 6020e 10/100 Base-T Ethernet
External Print Server (not shown)--------------- 70036001
OkiLAN® 6010 10 Base-T Ethernet
External Print Server (not shown)--------------- 70034401
Accessories 67
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Appendix B: Printer Control Codes
This section lists the most commonly used printer control
codes.
Epson LQ Commands
You will find a comprehensive listing of the control codes
(English only), on your Printer CD.
Epson Command
Backspace
ASCII
BS
Decimal
8
To access it:
Cancel
CAN
24
1 Place the CD in your CD-ROM drive and wait for it to
AutoPlay.
Carriage Return,
Execute
CR
13
2 Select your printer model, then click Continue.
3 Click Documentation and follow the on-screen prompts to
Character Pitch
view the file.
Select 10 cpi
Select 12 cpi
Select 15 cpi
Begin 10 cpi
ESC P
ESC M
ESC g
27 80
27 77
27 103
ESC SI, or SI 27 15, or 15
Cancel Condensed
Print
DC2 18
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Epson LQ Commands (Continued)
Epson Command
ASCII
Decimal
Enhanced Print On
Enhanced Print Off
ESC G
ESC H
27 71
27 72
Epson Command
ASCII
Decimal
Character Style
Italic Printing On
Italic Printing Off
ESC 4
ESC 5
27 52
27 53
Normal
ESC q 0
ESC q 1
ESC q 2
ESC q 3
27 113 48
27 113 49
27 113 50
27 113 51
Outline
Form Feed
FF
12
Shadow
Form Length
Outline with Shadow
n Inches (n = 1 to 22)
n Lines (n = 1 to 127)
ESC C NUL n 27 67 0 n
Delete
DEL
127
ESC C n
27 67 n
Double Height On
ESC w 1
27 119 49
or ESC US 0 or 27 31 48
ESC w 0 27 119 48
or ESC US 1 or 27 31 49
Horizontal Tab
Initialize Printer
Justification
HT
9
Double Height Off
ESC @
27 64
Double Width On
Double Width Off
ESC W 1
ESC W 0
27 87 49
27 87 48
Left
ESC a 0
ESC a 1
ESC a 2
ESC a 3
27 97 48
27 97 49
27 97 50
27 97 51
Center
Right
Full
Double Width
for One Line
SO
or ESC SO
14
or 27 14
Emphasized Print On
Emphasized Print Off
ESC E
ESC F
27 69
27 70
Control Codes 69
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Epson LQ Commands (Continued)
Epson Command
ASCII
Decimal
Margins
Epson Command
ASCII
Decimal
Set Left Margin
(n = 0 to 255)
Line Feed, Execute
ESC 1 n
ESC Q n
27 108 n
27 81 n
Set Right Margin
(n = 0 to 255)
w/ Carriage Return
n/180" (n = 0 to 255)
n/360" (n = 0 to 255)
LF
10
ESC J n
ESC ] n
27 74 n
27 93 n
Paper Out Sensor
Reverse, n/180"
(n = 0 to 255)
Disabled (Off)
Enabled (On)
ESC 8
ESC 9
27 56
27 57
ESC j n
27 106 n
Line Spacing, Set
n/360" (n = 0 to 255)
Print Quality/Font
ESC + n
27 43 n
or ESC [ n
or 27 91 n
Select LQ
ESC x 1
ESC x 0
27 120 49
27 120 48
27 107 48
27 107 49
27 107 50
27 107 51
27 107 55
Select Utility
n/180" (n = 0 to 255)
ESC 3 n
ESC A n
ESC 2
27 51 n
27 65 n
27 50
Select Roman (LQ only) ESC k 0
Select Swiss (LQ only) ESC k 1
n/60" (n = 0 to 127)
1/6"
1/8"
Select Courier (LQ only) ESC k 2
Select Prestige (LQ only) ESC k 3
Select Orator (LQ only) ESC k 7
ESC 0
27 48
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Epson LQ Commands (Continued)
Epson Command
ASCII
Decimal
Underline On
Underline Off
ESC - 1
ESC - 0
27 45 49
27 45 48
Epson Command
ASCII
Decimal
Print Speed
Uni-Directional Printing
Half-Speed On
Half-Speed Off
ESC s 1
ESC s 0
27 115 49
27 115 48
One Line Only
ESC <
27 60
On
ESC U 1
ESC U 0
27 85 49
27 85 48
Print Suppress Mode On
DC3
19
17
Off
Print Suppress Mode Off DC1
Upper Range Control Codes
Proportional Spacing On ESC p 1
Proportional Spacing Off ESC p 0
27 112 49
27 112 48
Permit Printing
Cancel Printing
ESC 6
ESC 7
27 54
27 55
Skip Over Perforation ON ESC N n
(n = 1 to 127)
27 78 n
Vertical Tab, Execute
VT
11
Skip Over Perforation OFF ESC O
27 79
Software I-Prime
Subscript On
ESC } NUL
27 125 0
27 83 49
27 83 48
27 84
ESC S 1
ESC S 0
Superscript On
Subscript/Superscript Off ESC T
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IBM Proprinter X24e / XL24e and
IBM X24e AGM / XL24e AGM
Commands
IBM Command
ASCII
Decimal
Double Width
On
ESC W 1
ESC W 0
SO
27 87 49
27 87 48
14
Off
for One Line
IBM Command
Backspace
ASCII
BS
Decimal
Emphasized Printing On
ESC E
27 69
27 70
8
Emphasized Printing Off ESC F
Cancel
CAN
CR
24
13
Enhanced Printing On
Enhanced Printing Off
ESC G
ESC H
27 71
27 72
Carriage Return
Character Pitch, Select
Form Feed
FF
12
10 cpi
12 cpi
15 cpi
DC2
18
Form Length
ESC :
ESC g
27 58
27 103
n inches
n = 1 to 255
ESC C NUL n 27 67 0 n
Condensed Print
Character Style
ESC SI, or SI 27 15, or 15
n lines
n = 1 to 255
ESC C n
27 67 n
9
Normal
ESC q 0
ESC q 1
ESC q 2
ESC q 3
27 113 48
27 113 49
27 113 50
27 113 51
Horizontal Tab, Execute HT
IBM Character Set
Outline
Shadow
Select Set I
Select Set II
ESC 7
ESC 6
27 55
27 54
Outline with Shadow
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IBM Commands (continued)
IBM Command
ASCII
Decimal
Line Spacing
IBM Command
ASCII
Decimal
Set Spacing to 1/8"
Set Spacing to 7/72"
ESC 0
ESC 1
27 48
27 49
Print One Character from
IBM Set III
(n = 0 to 255)
Set to n/60": AGM only
(n = 1 to 255)
ESC ^ n
27 94 n
ESC A n
ESC A n
ESC 2
27 65 n
27 65 n
27 50
Italic Printing On
Italic Printing Off
ESC % G
ESC % H
27 37 71
27 37 72
Set to n/72": PPR only
(n = 1 to 255)
Activate Spacing Set
by ESC A n
Line Feed, Execute
w/ Carriage Return
LF
10
Set to n/180": AGM only
(n= 1 to 255)
n/180" AGM only
(n = 1 to 255)
ESC 3 n
27 51 n
ESC J n
27 74 n
Set to n/216": PPR only
(n= 1 to 255)
n/216" PPR only
(n = 0 to 255)
ESC 3 n
27 51 n
ESC J n
ESC% 4 n
ESC ]
27 74 n
27 37 52 n
27 93
Set to n/360" (n= 1 to 255)ESC % 8 n
27 37 56 n
n/360" (n = 0 to 255)
Reverse
Overscore On
Overscore Off
ESC _ 1
ESC _ 0
27 95 49
27 95 48
Auto Line Feed On
Auto Line Feed Off
ESC 5 1
ESC 5 0
27 53 49
27 53 48
Control Codes 73
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IBM Commands (Continued)
IBM Command
ASCII
Decimal
Skip Over Perforation On
(n = 1 to 255)
IBM Command
ASCII
Decimal
ESC N n
27 78 n
27 79
Paper Out Sensor Off
Paper Out Sensor On
ESC 8
ESC 9
27 56
27 57
Skip Over Perforation Off ESC 0
Software I-Prime
Stop Printing
ESC } NUL
27 125 0
27 106
Print Quality / Font
ESC j
Select LQ Roman
Select LQ Swiss
Select LQ Courier
Select LQ Prestige
Select LQ Orator
ESC k 0
ESC k 1
ESC k 2
ESC k 3
ESC k 7
27 107 48
27 107 49
27 107 50
27 107 51
27 107 55
Subscript On
ESC S 1
ESC S 0
27 83 49
27 83 48
27 84
Superscript On
Subscript/Superscript Off ESC T
Top of Form,
Set at Current Position
ESC 4
27 52
Print Suppress Mode On
ML490
Underline Printing On
Underline Printing Off
ESC - 1
ESC - 0
27 45 49
27 45 48
ESC Q $
ESC Q #
27 81 36
27 81 35
ML491
Uni-Directional Print On ESC U 1
Uni-Directional Print Off ESC U 0
27 85 49
27 85 48
Print Suppress Mode Off DC1
17
Proportional Spacing On ESC P 1
Proportional Spacing Off ESC P 0
27 80 49
27 80 48
Vertical Tab, Execute
VT
11
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Appendix C: Specifications
Note: Specifications are subject to change without notice.
Receive Buffer Size
Maximum 128K
Print Method
Impact dot matrix
Reliability
Ribbon Life
4 million characters, on average, 10 cpi utility
Printhead Life
200 million characters average in 10 cpi draft mode at 25%
Printhead
24 pins, 0.20 mm (0.0079") diameter, with thermal
protection
Interfaces
Standard: Centronics parallel, IEEE-1284 compliant
duty and 35% page density
Mean Time Between Failures (MTBF)
USB 1.1
20,000 hours at 25% duty cycle and 35% page density
Optional: RS-232C Serial
Mean Time to Repair (MTTR)
Ethernet Print Servers:
15 minutes
6120i 10/100 Base-TX Internal
6020e 10/100 Base-T External
6010e 10 Base-T External
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Emulations (co-resident)
• Epson LQ
Characters per Line (cpl)
Setting
10 cpi
12 cpi
15 cpi
17.1 cpi
20 cpi
ML490
ML491
136 cpl
163 cpl
204 cpl
233 cpl
272 cpl
• IBM Proprinter X24e / XL24e
• IBM X24e AGM / XL24e AGM
80 cpl
96 cpl
Print Speed
120 cpl
137 cpl
160 cpl
Mode
Pitch
Speed
High Speed Draft (HSD) 10 cpi*
420 cps†
Utility
10 cpi
12 cpi
15 cpi
17.1 cpi
20 cpi
315 cps
378 cps
472 cps
269 cps
315 cps
Graphics Resolution
360 x 360 dpi maximum (24-dot, hex density)
Paper Thickness: Tractor Feed
Letter Quality (LQ)
10 cpi
12 cpi
15 cpi
17.1 cpi
20 cpi
105 cps
126 cps
157 cps
180 cps
210 cps
Rear Feed: 0.014" (0.36 mm) maximum
Bottom Feed: 0.017" (0.44 mm) max.
Requires optional push or pull tractor.
* Characters per inch
† Characters per second
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Resident Fonts
Resident Typefaces
Print Quality
Available Fonts
Mode/Font
Size: Style
Letter Quality
Courier, Gothic, Orator, Prestige,
Roman, Swiss, Swiss Bold
LQ Courier
10 & 12 cpi: Normal, Superscript, Subscript
Proportional: Normal, Superscript, Subscript
8 point: Normal
Utility
Gothic
Scalable: 11 to 64 points
LQ Letter
Gothic
10 cpi, 12 cpi, Proportional: Normal
Bar Codes
• Code 39
LQ Prestige
LQ Orator
LQ Roman
10 cpi, 12 cpi, Proportional: Normal
10 cpi, 12 cpi, Proportional: Normal
• UPC A, UPC E
• EAN 8, EAN 13
• Interleaved 2 of 5
• Code 128
10 & 12 cpi: Normal, Superscript, Subscript
Proportional & 8 point: Normal
Scalable: 11 to 64 points
• Postnet
LQ Swiss
10 & 12 cpi: Normal, Superscript, Subscript
Proportional & 8 point: Normal
Scalable: 11 to 64 points
LQ Swiss Bold 10 cpi, 12 cpi, Proportional: Normal
Utility Gothic 10 & 12 cpi: Normal, Superscript, Subscript
HSD Gothic
10 cpi: Normal
Specifications 77
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Paper Specifications: ML490
Labels
Feed: Bottom* Only
Weight: Not applicable
Width Range: 3" to 10" (76 to 254 mm)
Single (Cut) Sheets
Feed: Top Only
Weight: 14 to 24 lb. US Bond (52.6 to 90 g/m2)
Width Range: 7.2" to 8.5" (183 to 216 mm)
Envelopes, single feed
Feed: Top Only
Weight: Max. 24 lb.
Width Range: 6.5" to 9.5" (165 to 241 mm)
Single-part, continuous forms
Feed: Rear, Bottom*
Weight: 12 to 24 lb. US Bond (45 to 90 g/m2)
Width Range: 3" to 10" (76 to 254 mm)
Envelopes, continuous feed, non-overlap
Feed: Bottom* Only
Weight: Max. 24 lb.
Width Range: 6.5" to 9.5" (165 to 241 mm)
Carbonless continuous forms (orig. + 4 copies)
Feed: Rear, Bottom*
Weight: 9 to 11 lb.
Card Stock
Width Range: 3" to 10" (76 to 254 mm)
Feed: Bottom*
Weight: Max. 100 lb. Index (180 g/m2)
Width Range: Not applicable
Interleaf continuous forms (orig. + 4 copies)
Feed: Rear, Bottom*
Weight: 10 to 12 lb. paper, 9 lb carbon
Width Range: 3 to 10" (76 to 254 mm)
* Bottom feed requires optional pull or push tractor
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Paper Specifications: ML491
Labels
Feed: Bottom* Only
Weight: Not applicable
Width Range: 3" to 16" (76.2 to 406.4 mm)
Single (Cut) Sheet
Feed: Top Only
Weight: 14 to 24 lb. US Bond (52.6 to 90 g/m2)
Width Range: 7.2" to 14.3" (182.8 to 363.2 mm)
Envelopes, single feed
Feed: Top Only
Weight: Max. 24 lb.
Width Range: 6.5" to 9.5" (165.1 to 241.3 mm)
Single-part, continuous forms
Feed: Rear, Bottom*
Weight: 12 to 24 lb. US Bond (45 to 90 g/m2)
Width Range: 3" to 16" (76.2 to 406.4 mm)
Envelopes, continuous feed, non-overlap
Feed: Bottom* Only
Weight: Max. 24 lb.
Width Range: 6.5" to 9.5" (165.1 to 241.3 mm)
Carbonless continuous forms
Feed: Rear, Bottom*
Weight: 9 to 11 lb.
Card Stock
Width Range: 3" to 16" (76.2 to 406.4 mm)
Feed: Bottom* Only
Weight: Max. 100 lb. Index (180 g/m2)
Width Range: Not applicable
Interleaf continuous forms
Feed: Rear, Bottom*
Weight: 10 to 12 lb. paper, 9 lb. carbon
Width Range: 3" to 16" (76.2 to 406.4 mm)
* Bottom feed requires optional pull or push tractor
Specifications 79
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Environmental Requirements
Physical Specifications
Temperature
Note: Height dimensions do not include the acoustic cover.
Operating: 41 to 95°F (5 to 36°C)
Storage: 14 to 122°F (-10 to 50°C)
ML490
Size (WxDxH): 17.1" x 16.1" x 6"
(434 x 409 x 153 mm)
Humidity
Operating: 20 to 80% RH
Storage: 5 to 95% RH
Weight: 16.7 lbs. (7.6 kg)
ML491
Size (WxDxH): 23.1" x 16.1" x 6"
(588 x 409 x 153 mm)
Electrical Requirements
• 120 volts ac, (+6%, -15%)
50 or 60 Hz ( 2%)
Weight: 21.1 lbs. (9.6 kg)
78 W Typical, 10 W idle
• 230 ac, (+15%, -14 %)
50 or 60 Hz ( 2%)
78 W Typical, 10 W idle
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Appendix D: Installation
Printer
Location
Ribbon Cartridge
Power Cord
• Place your printer on a firm, solid surface.
• Allow enough space around the printer to easily access the
platen knob and the various paper feed paths.
• Make sure a suitable grounded power outlet is available
nearby.
Unpack
• If any items are missing, contact your dealer immediately.
• Keep your packing materials and carton in case you ever
need to ship or transport the printer.
• Interface cable and paper are sold separately.
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1 Remove any packing tape, then grasp the tabs (1) at either
end of the access cover and pivot it toward the front of the
printer as far as it will go.
3 Remove the shipping restraint from the pull-up roller
assembly (1).
2 Remove the printhead shipping restraint.
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4 Use the tabs (1) to lift and remove the sheet guide, then
5 Reinstall the sheet guide: insert the clips on either side of the
separator into the notches marked with a triangle, then press
down to secure the separator in place.
remove the shipping restraint.
Installation 83
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CAUTION!
The printhead may be HOT!
Install the Ribbon Cartridge
Important!
3 Unpack the new ribbon cartridge and install it on the
Make sure you have the correct replacement ribbon for the
your printer. The wrong ribbon will not print when installed
in your printer.
printhead.
Important!
Do not remove the ribbon shield (1) from the ribbon!
Ribbon Cartridge Handling
• Leave unused ribbon cartridges in their packages until
needed.
• Careful; the ribbon ink may cause permanent stains.
• Ribbon ink on skin or clothing can usually be removed
with soap and water.
1 Make sure the printer is turned OFF.
2 Open the access cover and center the printhead (1).
4 Turn the take-up knob (1) in the direction of the molded-in
arrow to take up any ribbon slack.
5 Close the access cover and turn the printer on.
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Power Connection
Computer Connections
1 Make sure both the printer and the computer are OFF.
Parallel (LPT): IEEE 1284
• Requires bidirectional cable, max. length 6 ft. (1.8 m), not
supplied.
2 Plug the power cord into the back of the printer, then into a
grounded outlet.
• Printer has 36-pin socket
1 Make sure the printer and computer are both turned off.
2 Attach a suitable bidirectional cable to the parallel connector
on the back of the printer. Then attach and secure the cable
to your computer.
3 Turn on the printer.
3 Turn the printer and computer back on.
Installation 85
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USB: Specification 1.1 Compliant
• Requires USB 1.1 cable, maximum length 19.7 ft. (5 m), not
supplied.
Loading Paper
For instructions on loading paper, see “Loading Paper” in
Chapter 5.
• Printer has USB “B” receptacle.
1 Make sure the printer and computer are both turned off.
2 Attach a suitable USB cable to the printer. Then attach the
cable to your computer.
3 Turn the computer and printer back on.
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The Font Sample Test prints a sample of the fonts standard to
the printer.
Testing the Printer
• Font Sample Test
The top of the printout shows the Printer Model, Emulation,
Country Code, Interface, and Firmware Revision Level.
• Rolling ASCII Test
• Hexadecimal Dump Mode
1 Make sure paper is loaded.
2 Turn off the printer.
Font Sample Test
3 Press and hold the LF key while turning the printer back on.
The printer prints a page of font samples and the test ends.
Important!
Wide carriage Model ML491: If you are using 8.5" paper to
run the tests, make sure the paper width selection in the
printer menu is set to 8.5 inches. Otherwise, printing on the
platen may damage the printer. See Chapter 4: Menu Mode
for more information.
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The Rolling ASCII Print Test produces a continuous printout of
all 96 ASCII characters in a rolling pattern in whatever
typeface is selected (default = LQ Courier).
Rolling ASCII Test
The top of the printout shows the Printer Model, Emulation,
Country Code, and Firmware Revision Level.
1 Make sure continuous forms paper is loaded.
2 Turn the printer off.
3 Press and hold the QUIET/TOF key while turning the printer
back on. (If the printer comes on without starting the Rolling
ASCII test print, you did not hold the QUIET/TOF key long
enough.)
Important!
The printer prints the rolling ASCII text page after page.
Wide carriage Model ML491: If you are using 8.5" paper to
run the tests, make sure the paper width selection in the
printer menu is set to 8.5 inches. Otherwise, printing on the
platen may damage the printer. See Chapter 4: Menu Mode
for more information.
4 Press SEL to end the test.
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Hexadecimal Dump Mode
When the printer is placed in the Hexadecimal Dump Mode, all
data received, including text and printer commands, is printed
in both hexadecimal and ASCII format.
Emulations
The factory default emulation for your printer is Epson® LQ.
If you wish to change to one of the IBM emulations, see
“Changing Emulations” in Chapter 3.
For example, the following line of BASIC code
LPRINT CHR$ (27);”0”;CHR$ (30);”This is an
example of a hexadecimal dump.”
Printer Drivers
would print like this:
Note: In the ASCII format, all non-printable characters will be
represented by a period.
The Oki driver for your printer is provided on the CD included
with the printer. You can either load the Oki driver or select one
of the compatible drivers listed below in your software
application.
To engage the Hexadecimal Dump Mode:
1 Make sure paper is loaded.
2 Turn off the printer.
3 Hold the SEL and FF/LOAD keys for several seconds while
turning on the printer.
To exit the Hexadecimal Dump Mode:
• Press the SEL key
or
• Turn the printer off, then on again.
Installation 89
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Loading the OKI Driver
Using a Compatible Driver
Parallel Interface
1 Insert the CD into your CD-ROM drive.
Note: See your software documentation for information on
how to select a printer driver.
The drivers below are listed by decreasing compatibility with
your printer. Use one as close to the top of the list as possible.
Note: If the CD does not AutoPlay, click Start Run
Browse, then browse to your CD-ROM drive,
double-click Install.exe and click OK.
Epson LQ
2 Select your printer model.
• Epson LQ 870/1170
• Epson LQ 80/1000
• Epson LQ 2500
3 When the Menu Installer window appears, click the Printer
Software button.
4 Follow the on-screen instructions.
IBM Proprinter
USB Interface
1 Turn the printer on.
• IBM Proprinter X24e/XL24e
• IBM Proprinter X24/XL24
• IBM Proprinter
The Windows Add New Hardware Wizard window displays.
2 Click Next.
IBM X24e AGM/XL24e AGM
3 Insert the CD into your CD-ROM drive.
Use this emulation only when you’ve selected an IBM
Proprinter X24e/XL24e driver and you need to use Epson
Letter Quality (LQ) high density graphics.
4 Follow the on-screen instructions to install the software for
your printer model.
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Index
A
C
E
Accessories ............................................. 67
Alignment problems ................................. 9
ASCII Test .............................................. 88
Auto Carriage return............................... 35
Auto LF (Line Feed)........................32, 35
Auto Select ............................................. 32
Carbonless continuous forms ..........78, 79
Card Stock .......................................78, 79
Centering printhead position ..................62
Character Pitch ....................................... 38
Selecting ............................................24
Character Set ...................................29, 36
Character Width......................................38
Characters Per Second (CPS) ................... 7
Code Page Character Set ........................36
Codes, Printer Control ............................ 68
Commands
Electrical Requirements..........................80
Emulations ................................25, 29, 89
Changing............................................25
Matching the printer driver ................ 61
Mode ...........................................29, 37
Envelopes ........................................78, 79
Environmental Requirements ................. 80
Epson LQ Commands ......................68–71
B
Bar Codes ............................................... 77
Bi-directional printing .....................31, 39
Bottom Feed ....................................78, 79
Form Tear-Off .................................... 30
Line Spacing ......................................30
Skip Over Perforation ........................ 30
Buffer
Epson LQ .....................................68–71
IBM Proprinter ............................72–81
Control Codes .........................................68
Cut Sheet Feeder.....................................67
Clearing ............................................. 37
Receive Buffer Size ........................... 75
91
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Limited Operation ......................9, 38, 64
Line Spacing ...........................................37
Bottom Feed ......................................30
Rear Feed ...........................................30
Top Feed ............................................31
F
H
Factory defaults, menu mode ................. 27
Font Sample Test .................................... 87
Fonts
Height, double height printing ............... 40
Hex Dump Mode ....................................89
Humidity .................................................80
Embedded Printer Commands ........... 61
Resident ............................................. 77
Selecting ............................................39
Forms Tear-Off ....................................... 37
Changing............................................18
Top of Form ................................12, 17
Wait Time........................................... 40
Front Panel
I
M
I-Prime ......................................33, 37, 60
IBM
Margin, Bottom ...............................31, 35
Mean Time Between Failures (MTBF)
7, 75
Character Set......................................36
Commands ...................................72–81
Emulation...........................................29
Initialization string..................................60
Interleaf Continuous Forms ....................79
Interleaf continuous forms...................... 78
Interleaved 2 of 5....................................77
Italics ...............................................29, 40
Mean Time to Repair (MTTR) ............... 75
Memory, receive buffer size ...................75
MENU light ............................................26
Menu Mode ............................................26
Changing Settings .............................. 28
Entering ............................................. 27
Exiting ............................................... 27
Front Panel keys ................................26
Group .................................................26
Item .................................................... 26
MENU light ....................................... 26
Printing the Menu Settings ................ 27
Reset to factory defaults ....................27
Settings Table ...............................29–41
Keys ..................................................... 9
Menu Mode........................................ 26
G
Gothic font .............................................. 77
Graphics
L
Printing .............................................. 37
Bi-directional ................................31
Uni-directional .............................. 31
Resolution .......................................... 76
GROUP, Menu Mode ............................. 26
Labels ..............................................78, 79
Language ................................................29
Length, Page
Rear Feed ...........................................30
Top Feed ............................................31
Lights, Front Panel ................................. 23
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Paper Jams ..............................................63
Continuous feed ................................. 64
Rear Feed ...........................................54
Rear Feed, repetitive ..........................55
Single Sheet ....................................... 57
Paper Lever............................................. 63
Paper Out ................................................64
Paper Park...............................................18
Paper Path, switching .............................19
Parallel Interface.....................................33
I-PRIME Signal ................................. 60
Parts, replacement, purchasing ............... 65
Perforation, skip over ......................30, 40
Pitch, character ................................29, 38
Platen knob part number ........................66
Postnet ....................................................77
Power rating.............................................. 3
PRINT, Menu Mode ...............................26
Print Method ...........................................75
Print Mode .......................................29, 39
Print Registration .............................31, 39
Print Server Option ................................. 67
Print Servers ...........................................67
Print Size ................................................76
Print Speed.........................................7, 76
Print start position, reset to default ......... 16
Print Suppress ..................................32, 39
Printer Control Codes .............................68
Printer Drivers
O
matching the emulation ..................... 61
Selecting ............................................89
Printer Parameters .................................. 26
Printhead .................................................75
Centering position.............................. 36
Life..................................................... 75
Replacement Part No. ........................ 66
Printhead Gap
Definition ...........................................21
Setting ................................................ 21
Proportional Spacing .......................29, 39
Proprinter Commands.......................72–81
Pull Tractor ............................................. 67
Push Tractor ............................................67
Operator Panel Function......................... 64
Options, purchasing ................................65
Orator font .............................................. 77
P
Page Length
Rear Feed ........................................... 30
Top Feed ............................................31
Page Width.............................................. 38
Bottom Feed ......................................30
Rear Feed ........................................... 30
Setting in the Printer Menu .........31, 38
Top Feed ............................................31
Paper
R
Cut Sheet............................................67
Paper Out Override .....................31, 38
Single Sheet ....................................... 52
Static ..................................................64
Thickness ........................................... 76
Weight ................................................ 79
Widths ................................................ 79
Setting in the Printer Menu ....31, 38
Rear Feed
Continuous Forms.............................. 10
Form Tear-Off .............................30, 31
Jams, Repetitive ................................. 55
Line Spacing ......................................30
Paper Jam ...........................................54
Skip Over Perforation ........................ 30
Receive Buffer Size ................................75
Reliability ............................................... 75
Replacement Parts .................................. 65
Index 93
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Resolution (Graphics)............................. 76
Ribbon Cartridge
Standard Character Set ........................... 29
Static charges and paper .........................64
Symbol Sets .....................................29, 37
Resident ............................................. 77
Selecting .....................................23, 39
Software commands ..........................23
Replacement Part No. ........................ 66
Replacing ........................................... 41
Ribbon Shield ...........................42, 62, 84
Roll Paper Stand ..................................... 67
RS-232C Serial Interface........................ 75
T
U
TEAR
Uni-directional printing, graphics .......... 31
Utility
Front Panel key ..................................18
TEAR feature .....................................17
Temperature Specifications ....................80
Tests
Front Panel Light ...............................77
Print Speeds ......................................... 7
Utility Mode Print Quality ................. 22
S
Security. control printer access ................. 9
Self Tests................................................. 87
Serial Interface Option ....................61, 67
Server, Print Option ................................67
Set, Menu Mode ..................................... 26
Sheet Guide ............................................64
SI......................................................32, 40
Single Sheet
Cut Sheet Feeder Option....................67
Jams ................................................... 57
Loading .............................................. 52
Skip Over Perforation ............................. 30
Software
ASCII Test .........................................88
Font Sample Test ...............................87
Hex Dump..........................................89
Thickness, Paper .....................................76
Time Out ..........................................32, 40
Top Feed ...........................................78–81
Bottom Margin...................................31
Line Spacing ......................................31
Pull Tractor ........................................67
Single Sheet ....................................... 11
Top of Form ............................................35
Forms Tear-Off ......................8, 12, 17
Paper Shield .................................. 9, 12
Reset to factory default ...................... 16
Setting ................................................12
Standard Setting..........................12, 16
Typefaces ................................................29
W
Wait Time ........................................31, 40
Weight, Paper ......................................... 79
Width
Character ............................................38
Double width printing........................ 40
Page
Bottom Feed.................................. 30
Rear Feed ......................................30
Top Feed........................................ 31
Paper ..................................................79
Embedded commands........................ 61
Matching drivers to emulations ......... 61
Software vs. printer settings ..............60
Specifications ......................................... 75
Speed, print, graphics ............................. 37
Z
Zero character (slashed, unslashed).29, 40
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