OKI MICROLINE 491, MICROLINE 490 User manual

OKI MICROLINE 491, MICROLINE 490 User manual

User’s

Guide

59348401

Microline 490/491 User’s Guide

P/N

59348401 Revision 1.1

June 2006

Every effort has been made to ensure that the information in this document is complete, accurate, and up-to-date. Oki Data assumes no responsibility for the results of errors beyond its control. Oki Data also cannot guarantee that changes in software and equipment made by other manufacturers and referred to in this guide will not affect the applicability of the information in it. Mention of software products manufactured by other companies does not necessarily constitute endorsement by Oki Data.

Copyright 2003, 2006 by Oki Data. All rights reserved.

Written and produced by the Oki Data Training and

Publications Department.

Web Site: http://www.okiprintigsolutions.com.

E

NERGY

S

TAR

®

As an E

NERGY

S

TAR

Partner, Oki Data has determined that this product meets the E

NERGY

S

TAR

guidelines for energy efficiency.

Trademark Information

OKI and MICROLINE are registered trademarks of Oki Electric Industry

Company, Ltd.

E

NERGY

S

TAR

is a registered trademark of the

United States Environmental Protection

Agency

Epson is a registered trademark of Epson America, Inc.

IBM is a registered trademark of International Business Machines

Corp.

Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and other countries.

2

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:

• 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.

• 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.

• The printer must be installed near a power outlet which will remain easily accessible.

• 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.

• 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.

• If you’re using an extension cord or power strip with the printer, make sure that the total of the amperes required by all the equipment on the extension is less than the extension’s rating. Generally, the total ratings of all equipment plugged into any one power line should not exceed 15 amperes. Don’t exceed this unless you know that the power line your equipment is plugged into has a rating above 15 amperes.

3

• Unplug the printer before you clean it. Use only a damp cloth. Do not use liquid or aerosol cleaners.

• 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.

• 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.

• Do not use your printer near water. Do not spill liquid of any kind into it.

• 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.

• 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.

These are some of the things to look for:

– The power cord or plug is frayed or damaged.

– Liquid has been spilled into the housing, or the printer has been exposed to water.

– The printer has been dropped or its cabinet has been damaged.

– The printer doesn’t function normally when you’re following the operating instructions.

4

Microline 490/491 User’s Guide

Contents

Safety ............................................................................ 3

Chapter 1: Introduction ............................................. 7

Printer Features ............................................................................... 7

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):

Forms Tear-Off OFF (Default Setting) ...................................... 14

Setting Top of Form (TOF):

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

5

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

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

6

Microline 490/491 User’s Guide

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

Index .......................................................................... 91

Chapter 1: Introduction

Printer Features

• Super reliable, durable operation: 20,000 hours Mean Time

Between Failures (MTBF) at 25% duty cycle and 35% page density

• Advanced paper handling, with built-in rear push tractor and zero-tear forms capability.

• Blazing print speeds, in characters per second

(depending on characters per inch selected):

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.

Oki Data on the Internet

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.

You may reach Oki Data via the Internet at:

www.okidata.com

my.okidata.com

7

8

Chapter 2: Helpful Hints

Saving Money: Forms Tear-Off

The Forms Tear-Off feature allows a printed continuous forms page to be torn off without wasting paper or adjusting the printer.

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.

Paper remains in the tear-off position until the printer receives more data. Then, the paper moves back down for printing.

Note: This feature is normally turned off.

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.

Saving Time

Internet Support

Oki Data provides support via the Internet:

www.okidata.com

is the main web site, the gateway to Oki

Data’s products and services.

http://my.okidata.com

is a powerful area of Oki Data’s web site designed to help you personalize the information and service you get from Oki Data.

Paper Park

Your printer’s paper park feature allows you to print a single sheet (cut-sheet) page without removing continuous feed paper from the printer.

For more information, see “Paper Park” in Chapter 3: Using

Your Printer.

Operation Tips

Top of Form (TOF)

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.

The first line prints at the red line of the plastic paper shield (1) on the printhead.

Turning the Platen Knob

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.

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.

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

Chapter 3: Using Your Printer

Parts Identification: Rear Feed

(Continuous Forms)

Note: For rear feed, the paper lever must be forward.

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

10

Parts Identification: Top Feed

(Single Sheets)

Paper Guides

Sheet Guide

Paper Lever

On-Off Switch

Platen Knob

Control Panel

Acoustic Cover (open)

Note: For single-sheet printing, the paper lever must be in the middle position.

Using Your Printer

11

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!

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.

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.

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).

12

Microline 490/491 User’s Guide

Determining if Forms Tear-Off is Off or On

There are two ways to determine the status of the Forms

Tear-Off menu setting:

• Print the Menu.

• Use the TEAR key.

To use the TEAR key:

1 Make sure paper is loaded.

2 Press

TEAR

(3).

• If the paper moves up, Forms Tear-off is off.

• If the paper moves down, Forms Tear-off is on.

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

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!

Note: The first line prints at the red line (1) of the plastic paper shield on the printhead.

With paper loaded and the printer on and selected:

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.

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.

14

Microline 490/491 User’s Guide

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!

Note: The first line prints at the red line (1) of the plastic paper shield on the printhead.

With paper loaded and the printer on and selected:

1 Press

PARK

(6) to park the paper.

The SEL light goes off and the red alarm light comes on.

2 Press

SHIFT

(2) and

QUIET/TOF

(7) to reset the current TOF.

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).

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.

Note: To reset the Top of Form to the factory default, see the next page.

Using Your Printer

15

Temporarily Changing the Top of Form

Position

Important

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!

To move the Top of Form position lower for one page only:

1 Press

SEL

to deselect the printer.

2 Press

LF

to lower the position of the Top of Form.

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.

3 Press and hold

PARK

+

QUIET/TOF

while turning on the printer.

4 Reload paper.

16

Microline 490/491 User’s Guide

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).

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).

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.

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.

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.

Do not use Forms Tear-Off with labels or multipart

forms!

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.

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).

Using Your Printer

17

Changing the Forms Tear-Off Setting

Note: The default setting for Forms Tear-Off is OFF.

To change the Forms Tear-Off setting:

1 Press

SHIFT

(2) +

SEL

(1).

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,

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.

18

Microline 490/491 User’s Guide

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

Important!

Never park labels!

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.

Changing Paper Paths

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.

4 Move the paper lever (1) to the middle position marked

“TOP.”

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

Single Sheets to

Continuous Forms

1 Press

FF/LOAD

to remove the single-sheet paper.

2 Lower the sheet guide into the continuous-forms position.

4 Move the paper lever to the appropriate position.

• Rear feed:

• 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

.

20

Microline 490/491 User’s Guide

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.

To adjust the gap, open the access cover and move the blue lever (1) to the recommended setting from the table.

Setting Media

1 Regular paper

2

3

2-part form (with carbon)

3-part form (with carbon)

4

5

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

Print Quality

Important!

Front panel settings for print quality and character pitch are normally overridden by software commands.

Press

PRINT QUALITY

(1) to select:

LQ: Letter Quality

[LQ light on]

• 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

22

Microline 490/491 User’s Guide

Typefaces: LQ Mode

Important!

Front panel settings for print quality and typeface are normally overridden by software commands.

To select the typeface you wish to use, press

PRINT QUALITY

(1) until the appropriate front panel lights are on:

Typeface

Courier

Gothic

Orator

Prestige

Roman

Swiss

Swiss Bold

Lights on

LQ

and

COURIER

LQ

and

GOTHIC

LQ

and

ORATOR

LQ

and

PRESTIGE

LQ

,

COURIER

, and

GOTHIC

LQ

,

PRESTIGE and

ORATOR

LQ

,

COURIER

and

PRESTIGE

Using Your Printer

23

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.

24

Microline 490/491 User’s Guide

Printer Reset

Clearing some error conditions requires that you reset

(reinitialize) the printer. To do this:

1 Press and release

SEL

(1) to take the printer off-line.

The

SEL

light goes out.

2 Press and hold

SHIFT

(2), then press

RESET

/

CHARACTER

PITCH

.

Important!

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.

Emulations

• Epson

®

LQ — factory setting

• IBM ® Proprinter

• IBM

®

AGM

Changing Emulations

1 Make sure paper is loaded.

2 Press and hold

SHIFT

(2), then press

SEL

(1).

3 Press

LF

(3).

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

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.

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.

Menu Mode Keys

GROUP Key

Prints the next Group in the Menu.

With the

SHIFT

key, prints the previous Group.

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.

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.

26

Entering and Exiting Menu Mode

To enter or exit the Menu Mode, hold

SHIFT

while pressing

SEL

.

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.

To reset the Menu to the standard settings (factory defaults):

1 Turn the printer off.

2 Press

SEL

+

LF

while turning the printer on.

Printing the Menu Settings

Printing the Current Menu Settings

1 Make sure paper is loaded in the printer.

2 Press and hold

SHIFT

, then press

SEL

to enter the Menu

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:

1 Make sure paper is loaded in the printer.

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

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.

28

Microline 490/491 User’s Guide

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

Printer Control Emulation Mode

Font Print Mode

Symbol Sets

Pitch

Proportional Spacing

Style

Size

Character Set

Language Set

Zero Character

Code Page

Settings (Defaults are set in bold italic)

EPSON LQ, IBM PPR, IBM AGM

LQ Courier, LQ Roman, LQ Swiss, LQ Swiss Bold, LQ Orator, LQ Gothic,

LQ Prestige, Utility, HSD

10 cpi, 12 cpi, 15 cpi, 17.1 cpi, 20 cpi

No, Yes

Normal, Italics

Single, Double

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

Slashed, Unslashed

USA, Canada French, Multilingual, Portugal, Norway, BRASCII, Abicomp,

Multilingual 858, ISO 8859-15

Menu Mode

29

Menu Settings Table (Continued)

Group

Rear Feed

Bottom Feed

Item Settings (Defaults are set in bold italic)

Line Spacing

Form Tear-Off

6 LPI, 8 LPI

Off, 500 ms, 1 sec, 2 sec

Skip Over Perforation No, Yes

Page Width (wide model) 13.6", 8"

Page Length 11", 11-2/3", 12", 14", 17", 5", 3", 3.25", 3.5", 4", 5.5", 6", 7", 8", 8.5"

Line Spacing

Form Tear-Off

6 LPI, 8 LPI

Off, 500 ms, 1 sec, 2 sec

Skip Over Perforation No, Yes

Page Width (wide model) 13.6", 8"

Page Length 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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Microline 490/491 User’s Guide

Menu Settings Table (Continued)

Group

Top Feed

Set-Up

Item

Print Registration 2

Settings (Defaults are set in bold italic)

Line Spacing

Form Tear-Off*

6 LPI, 8 LPI

Off, 500 ms, 1 sec, 2 sec

Bottom Margin Valid, Invalid

Page Width (wide model) 8", 13.6"

Page Length

Wait Time

Page Length Control

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

by MENU Setting, by Actual Page Length

Graphics

Receive Buffer Size

Paper Out Override

Print Registration 1

Bi-directional, Uni-directional

1 Line, 32K, 64K, 128K

No, Yes

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.

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

Menu Settings Table (Continued)

Group

Setup (cont.)

Item

Operator Panel Function

Reset Inhibit

Print Suppress Effective

Auto LF

Auto CR*

CSF Bin Select†

SI Select Pitch (10 cpi)*

SI Select Pitch (12 cpi)*

Time Out Print

Auto Select

Graphics Speed

Centering Position

CSF Type

Power Saving

Power Save Time

Settings (Defaults are set in bold italic)

Full Operation, Limited Operation

No, Yes

No, Yes

No, Yes

No, Yes

Bin 1, Bin 2

15 cpi, 17.1 cpi

12 cpi, 20 cpi

Valid, Invalid

No, Yes

Low, High

DEFAULT, MODE 1, MODE 2

Wide, Narrow

Enable, Disable

5 min, 10 min, 15 min, 30 min, 60 min

* Appears only when the IBM emulation is selected.

† Appears only when optional Cut Sheet Feeder is installed.

32

Microline 490/491 User’s Guide

Menu Settings Table (Continued)

Group

Parallel I/F

Serial IF†

Item

I-Prime

Pin 18

Auto Feed XT*

Bi-Direction

Parity

Serial Data 7/8 Bits

Protocol

Diagnostic Test

Busy Line

Baud Rate

DSR Signal

DTR Signal

Busy Time

Settings (Defaults are set in bold italic)

Buffer Print, Buffer Clear, Invalid

+5V, Open

Invalid, Valid

Enable, Disable

None, Odd, Even

8 Bits, 7 Bits

Ready/Busy, X/On / X/Off

No, Yes

SSD-, SSD+, DTR, RTS

19200 bps, 9600 bps, 4800 bps, 2400 bps, 1200 bps, 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

Menu Settings Table (Continued)

Group

CSF Bin 1*

CSF Bin 2*

Item Settings (Defaults are set in bold italic)

Line Spacing

Bottom Margin

6 LPI, 8 LPI

Valid, Invalid

Page Width (Wide model) 8", 13.6"

Page Length 11", 11-2/3", 12", 14", 17", 5", 3.5", 4", 5.5", 6", 7", 8", 8.5"

Line Spacing

Bottom Margin

Page Length

6 LPI, 8 LPI

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.

34

Microline 490/491 User’s Guide

Explanations of Menu Items

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

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.

Auto LF, Default = No

If your printout is consistently double spaced, select No; if it overprints, select Yes.

Auto Feed XT, Default = Invalid

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.

Auto Select, Default = No

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.

Bi-direction, Default = Enable

Change this setting if you wish to disable bidirectional transmission (PnP) in Nibble mode.

Bottom Margin, Default = Valid

Change to Invalid if you want the printer to ignore the bottom margin setting.

CAUTION!!

Setting the Bottom Margin to Invalid can cause loss of data and damage the printhead by allowing printing without paper.

Menu Mode

35

Busy Line, Default = SSD-

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:

• SSD -9V, select SSD-

• SSD +9V, select SSD+

• DTR -9V, select DTR

• RTS -9V, select RTS

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,

Centering Position, Default = DEFAULT

Used to limit printhead travel when printing narrow columns.

• Select Mode 1 for the narrow carriage printer.

• 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

Code Page, Default = USA

Choose the Code Page character set you wish to use: USA,

Canada French, Multilingual, Portugal, Norway, BRASCII,

Abicomp, Multilingual 858, or ISO 8859-15.

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.

Diagnostic Test, Default = No

Appears only when the optional Serial Interface is installed.

Select yes to perform a diagnostic test of the serial interface.

DSR Signal, Default = Valid

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.

36

Microline 490/491 User’s Guide

DTR Signal, Default = Ready on Power Up

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).

Emulation Mode, Default = Epson LQ

Selects the printer command set (emulation) you want to engage.

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.

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.

Graphics Speed, Default = Low

Change to High for faster printing when optimum print quality is not an issue.

I-Prime, Default = Buffer Print

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.

• 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.

Language Set, Default = American

Replaces certain standard symbols with special characters used in foreign languages.

Line Spacing, Default = 6 lpi

Change to 8 lines per inch (lpi) to get more lines on a page.

Menu Mode

37

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.

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.

Page Length, Default = 11"

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.

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.

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.

Caution!!

Engaging Paper Out Override can cause loss of data and damage the printhead by allowing printing without paper.

Parity, Default = None

Appears only when the optional Serial Interface is installed.

Selects the type of parity your system uses: None, Odd or

Even.

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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Microline 490/491 User’s Guide

Power Save Time, Default = 5 min

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.

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

Choose the quality and typeface of printing.

Print Registration, Default = 0

Change the setting as required to obtain the best registration for bi-directional printing.

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.

Proportional Spacing, Default = No

Change the setting to Yes to engage proportional spacing of characters.

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.

Receive Buffer Size, Default = 64K

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.

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.

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

Serial Data 7/8 Bits, Default = 8 Bits

Appears only if the optional Serial Interface is installed.

Change to 7 Bits if you systems uses a 7-bit data format.

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.

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.

Size, Default = Single

Change to Double for double width and height printing.

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.

Style, Default = Normal

Change to italics if you want the printed characters to be slanted.

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.

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.

Zero Character, Default = Slashed

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.

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Microline 490/491 User’s Guide

Chapter 5: Maintenance

Replacing the Ribbon Cartridge

Important!

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.

1 Make sure the printer is turned OFF.

2 Open the access cover and center the printhead.

41

CAUTION!

The printhead may be HOT!

3 Swing the used ribbon cartridge up off the printhead, lift it out, and discard it.

5 Turn the take-up knob in the direction of the arrow to take up any ribbon slack.

4 Unpack the new ribbon cartridge and install it.

Important!

Do not remove the ribbon shield (1) from the ribbon!

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.

If ribbon should contact the skin

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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Microline 490/491 User’s Guide

Loading Paper

Rear Feed

Note: If you have any paper in the paper path, remove it before installing rear feed paper.

Lock Lever

Upper Tractor Cover

Pins

Loading Rear Feed Paper from the Back of the Printer

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.”

1 Make sure the paper lever is forward (position marked

“REAR”).

2 Open the access cover (1).

Maintenance

43

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.

44

Microline 490/491 User’s Guide

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

8 Place continuous forms paper on the first two pins of either tractor.

Important!

You must keep the number of paper holes engaged on either pin the same. If you don’t the paper will skew and jam.

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.

Note: If the paper is too loose or too tight it can cause jams.

9 Close the right tractor cover.

46

Microline 490/491 User’s Guide

11 Lower the sheet guide and slide it toward the front of the printer until the marks align.

12 Place the wire guide (“1” in the illustration for the step 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.

Maintenance

47

Loading Rear Feed Paper from the Front of the Printer

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

2 Open the access cover (1).

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.

48

Microline 490/491 User’s Guide

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.

5 You will find reference marks (1 in illustration below) on the printer for the two most common paper sizes:

7 Open the tractor covers and place continuous forms paper on the first two pins of either tractor, then close the left tractor cover.

Important!

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.

Maintenance

49

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.

Note: If the paper is too loose or too tight it can cause jams.

9 Reinstall the sheet guide.

50

Microline 490/491 User’s Guide

10 Place the wire guide (1) in the sheet guide on the pull-up roller assembly.

11 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.

Maintenance

51

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”).

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.

52

Microline 490/491 User’s Guide

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

Clearing Paper Jams

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.

3 Open the access cover (1) and remove the pull-up roller assembly (2). Remove any torn pieces of paper.

4 Lift the sheet guide (1) and reload paper. Make sure you lock the tractor covers.

5 Lower the sheet guide, then install the pull-up roller assembly and close the access cover.

6 Turn on the printer and press

FF/LOAD

.

54

Microline 490/491 User’s Guide

Rear-Feed, Repeating Paper Jams

If the paper keeps jamming, you may have:

• defective paper

• misaligned paper

• bits of paper stuck in the paper path

Defective Paper

Replace the paper with a fresh stack.

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.

Bits of Paper Stuck in the Paper Path

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.

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.

Maintenance

55

4 Remove any torn pieces of paper.

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.

8 Load regular paper, close and lock the tractor 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

.

56

Microline 490/491 User’s Guide

Single-Sheet Paper Jams

1 Turn off the printer.

2 Use the platen knob to back the paper out.

3 Open the access cover (1) and remove the pull-up roller assembly (2).

4 Remove any torn pieces from around the carriage.

5 Reinstall the pull-up roller assembly and close the access cover.

Maintenance

57

Cleaning the Housing

You should clean the printer housing every six months (or after about 300 hours of operation).

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).

4 Use a clean, dry cloth to dust around the carriage shaft and platen. Remove any loose bits of paper.

5 Reinstall the pull-up roller assembly and close the access cover.

58

Microline 490/491 User’s Guide

Chapter 6: Troubleshooting

General Information

Here are some general things to check before proceeding with detailed troubleshooting.

• 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?

Note: Settings in your software application will normally override any settings in your printer driver.

Printer driver settings normally override settings from the printer menu or printer front panel.

59

Problems / Solutions

Problem

My word processor files do not print the way I have the menu and front panel set.

Solution

Remember:

• Settings in your software application can override settings in your printer driver.

• Your printer driver settings can override any settings from the printer menu or printer front panel.

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.

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.

For more information on changing menu settings, see

“Changing the Menu Settings” in Chapter 4.

Problem

Nothing happens when I turn on the printer.

Solution

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.

60

Microline 490/491 User’s Guide

Problem

The printer does not print when the computer sends data.

Solutions

1 Is the

SEL

light on? If not, press the

SEL

key.

2 Check that the interface cable is securely connected to both the printer and the computer.

3 If you have the optional serial interface board installed, check to be sure that it is firmly seated in the printer.

Problem

I'm getting strange symbols, incorrect fonts, etc., when I try to print a document.

Solutions

1 Check to be sure that the printer driver you have selected in your software matches the printer emulation.

• Press

SHIFT

and

SEL

keys, then press

GROUP

key.

• 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.

Troubleshooting

61

Problem

Ink smears on the paper when I print narrow columns.

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.”

For the wide-carriage printer, if MODE 1 doesn't work, try setting the Centering Position to MODE 2.

Problem

I've installed a new ribbon and the printing is smeared and streaked.

Solution

The ribbon shield (1) is either loose or missing.

Remove the ribbon cartridge and check the ribbon shield.

• If it is loose, secure it.

• If it is missing, find it and install it.

62

Microline 490/491 User’s Guide

Problem

There are dots missing in my printouts.

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.

Problem

The ALARM light is flashing.

Solution

Try turning the printer off and then back on again. If the light still blinks, call for service.

Problem

The ALARM light is on and the Character Pitch 10 light is flashing.

Solution

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

The ALARM light is on and the Character Pitch 15 light is flashing.

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

Problem

The printer needs paper. The ALARM is not on. I can’t load paper.

Solution

1 Press and release the

SEL

key.

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.

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.

Problem

The Print Quality and Character Pitch keys on the front panel don't work.

Solution

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.

Check with your system manager before changing any menu settings.

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Microline 490/491 User’s Guide

Appendix A: Parts & Accessories

Purchasing Parts & Accessories

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.

• Consult the dealer where your purchased your printer.

• Locate an Authorized Oki Data Reseller by visiting one of our web sites

http://my.okidata.com

(allows you to register your product and personalize your own support needs)

http://www.okidata.com

(provides general information)

• In the United States, purchase directly from Oki Data

- Via the Internet

http://my.okidata.com

http://www.okidata.com

- Via telephone

Order toll-free by phone at 1-800-654-3282

(1-800-OKI-DATA) using VISA ® , MasterCard ® , or

AmEx ® .

• In Canada, call 888-309-4570.

65

Replacement Parts

Item

Both Models

Part Number

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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Microline 490/491 User’s Guide

Accessories

Option

Model ML490

Part Number

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

Appendix B: Printer Control Codes

Epson LQ Commands

This section lists the most commonly used printer control codes.

You will find a comprehensive listing of the control codes

(English only), on your Printer CD.

To access it:

1 Place the CD in your CD-ROM drive and wait for it to

AutoPlay.

2 Select your printer model, then click Continue.

3 Click Documentation and follow the on-screen prompts to view the file.

Epson Command

Backspace

Cancel

Carriage Return,

Execute

Character Pitch

Select 10 cpi

Select 12 cpi

Select 15 cpi

Begin 10 cpi

Cancel Condensed

Print

ASCII

BS

CAN

CR

ESC P

ESC M

27 80

27 77

ESC g 27 103

ESC SI, or SI 27 15, or 15

DC2

Decimal

8

24

13

18

68

Epson LQ Commands (Continued)

ASCII Decimal Epson Command

Character Style

Normal

Outline

Shadow

Outline with Shadow

Delete

Double Height On

Double Height Off

Double Width On

Double Width Off

Double Width for One Line

ESC q 0

ESC q 1

ESC q 2

ESC q 3

27 113 48

27 113 49

27 113 50

27 113 51

DEL 127

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

ESC W 1

ESC W 0

27 87 49

27 87 48

Emphasized Print On

Emphasized Print Off

SO or ESC SO

ESC E

ESC F

14

or 27 14

27 69

27 70

Epson Command

Enhanced Print On

Enhanced Print Off

Italic Printing On

Italic Printing Off

Form Feed

ASCII

ESC G

ESC H

ESC 4

ESC 5

FF

Decimal

27 71

27 72

27 52

27 53

12

Form Length n Inches (n = 1 to 22) ESC C NUL n 27 67 0 n n Lines (n = 1 to 127) ESC C n 27 67 n

Horizontal Tab HT 9

ESC @ 27 64 Initialize Printer

Justification

Left

Center

Right

Full

ESC a 0

ESC a 1

ESC a 2

ESC a 3

27 97 48

27 97 49

27 97 50

27 97 51

Control Codes

69

Epson LQ Commands (Continued)

ASCII Decimal Epson Command

Line Feed, Execute w/ Carriage Return n/180" (n = 0 to 255) n/360" (n = 0 to 255)

Reverse, n/180"

(n = 0 to 255)

Line Spacing, Set n/360" (n = 0 to 255) n/180" (n = 0 to 255) n/60" (n = 0 to 127)

1/6"

1/8"

LF

ESC J n

ESC ] n

ESC j n

ESC + n or ESC [ n

ESC 3 n

ESC A n

ESC 2

ESC 0

10

27 74 n

27 93 n

27 106 n

27 43 n

or 27 91 n

27 51 n

27 65 n

27 50

27 48

Epson Command

Margins

Set Left Margin

(n = 0 to 255)

Set Right Margin

(n = 0 to 255)

ASCII

ESC 1 n

ESC Q n

Paper Out Sensor

Disabled (Off)

Enabled (On)

ESC 8

ESC 9

Print Quality/Font

Select LQ

Select Utility

ESC x 1

ESC x 0

Select Roman (LQ only) ESC k 0

Select Swiss (LQ only) ESC k 1

Select Courier (LQ only) ESC k 2

Select Prestige (LQ only) ESC k 3

Select Orator (LQ only) ESC k 7

Decimal

27 108 n

27 81 n

27 56

27 57

27 120 49

27 120 48

27 107 48

27 107 49

27 107 50

27 107 51

27 107 55

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Microline 490/491 User’s Guide

Epson LQ Commands (Continued)

Epson Command

Print Speed

Half-Speed On

Half-Speed Off

ASCII

ESC s 1

ESC s 0

Decimal

27 115 49

27 115 48

Print Suppress Mode On DC3

Print Suppress Mode Off DC1

Proportional Spacing On ESC p 1

Proportional Spacing Off ESC p 0

Skip Over Perforation ON ESC N n

(n = 1 to 127)

Skip Over Perforation OFF ESC O

19

17

27 112 49

27 112 48

27 78 n

27 79

Software I-Prime

Subscript On

ESC } NUL 27 125 0

ESC S 1 27 83 49

Superscript On ESC S 0

Subscript/Superscript Off ESC T

27 83 48

27 84

Epson Command

Underline On

Underline Off

ASCII

ESC - 1

ESC - 0

Uni-Directional Printing

One Line Only

On

Off

ESC <

ESC U 1

ESC U 0

Upper Range Control Codes

Permit Printing

Cancel Printing

ESC 6

ESC 7

Vertical Tab, Execute VT

Decimal

27 45 49

27 45 48

27 60

27 85 49

27 85 48

27 54

27 55

11

Control Codes

71

IBM Proprinter X24e / XL24e and

IBM X24e AGM / XL24e AGM

Commands

IBM Command

Backspace

Cancel

Carriage Return

Character Pitch, Select

10 cpi

12 cpi

15 cpi

Condensed Print

Character Style

Normal

Outline

Shadow

Outline with Shadow

ASCII

BS

CAN

CR

DC2

ESC :

ESC g

18

27 58

27 103

ESC SI, or SI 27 15, or 15

ESC q 0

ESC q 1

ESC q 2

ESC q 3

Decimal

8

24

13

27 113 48

27 113 49

27 113 50

27 113 51

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Microline 490/491 User’s Guide

IBM Command

Double Width

On

Off for One Line

ASCII

ESC W 1

ESC W 0

SO

Emphasized Printing On ESC E

Emphasized Printing Off ESC F

Enhanced Printing On

Enhanced Printing Off

ESC G

ESC H

Decimal

27 87 49

27 87 48

14

27 69

27 70

27 71

27 72

Form Feed FF 12

Form Length n inches n = 1 to 255 n lines n = 1 to 255

ESC C NUL n 27 67 0 n

ESC C n

Horizontal Tab, Execute HT

27 67 n

9

IBM Character Set

Select Set I

Select Set II

ESC 7

ESC 6

27 55

27 54

IBM Commands (continued)

Decimal IBM Command

Print One Character from

IBM Set III

(n = 0 to 255)

Italic Printing On

Italic Printing Off

Line Feed, Execute w/ Carriage Return n/180" AGM only

(n = 1 to 255) n/216" PPR only

(n = 0 to 255) n/360" (n = 0 to 255)

Reverse

Auto Line Feed On

Auto Line Feed Off

ASCII

ESC ^ n

ESC % G

ESC % H

LF

ESC J n

ESC J n

ESC% 4 n

ESC ]

ESC 5 1

ESC 5 0

27 94 n

27 37 71

27 37 72

10

27 74 n

27 74 n

27 37 52 n

27 93

27 53 49

27 53 48

IBM Command ASCII

Line Spacing

Set Spacing to 1/8"

Set Spacing to 7/72"

Set to n/60": AGM only

(n = 1 to 255)

Set to n/72": PPR only

(n = 1 to 255)

Activate Spacing Set by ESC A n

ESC 0

ESC 1

ESC A n

ESC A n

ESC 2

Set to n/180": AGM only

(n= 1 to 255) ESC 3 n

Set to n/216": PPR only

(n= 1 to 255) ESC 3 n

Set to n/360" (n= 1 to 255)ESC % 8 n

Overscore On

Overscore Off

ESC _ 1

ESC _ 0

Decimal

27 48

27 49

27 65 n

27 65 n

27 50

27 51 n

27 51 n

27 37 56 n

27 95 49

27 95 48

Control Codes

73

IBM Commands (Continued)

IBM Command

Paper Out Sensor Off

Paper Out Sensor On

Print Quality / Font

Select LQ Roman

Select LQ Swiss

Select LQ Courier

Select LQ Prestige

Select LQ Orator

Print Suppress Mode On

ML490

ML491

ASCII

ESC 8

ESC 9

ESC k 0

ESC k 1

ESC k 2

ESC k 3

ESC k 7

ESC Q $

ESC Q #

Print Suppress Mode Off DC1

Proportional Spacing On ESC P 1

Proportional Spacing Off ESC P 0

Decimal

27 56

27 57

27 107 48

27 107 49

27 107 50

27 107 51

27 107 55

27 81 36

27 81 35

17

27 80 49

27 80 48

IBM Command ASCII

Skip Over Perforation On

(n = 1 to 255) ESC N n

Skip Over Perforation Off ESC 0

Software I-Prime

Stop Printing

ESC } NUL

ESC j

Decimal

27 78 n

27 79

27 125 0

27 106

Subscript On

Superscript On

ESC S 1

ESC S 0

Subscript/Superscript Off ESC T

Top of Form,

Set at Current Position ESC 4

27 83 49

27 83 48

27 84

Underline Printing On

Underline Printing Off

Vertical Tab, Execute

ESC - 1

ESC - 0

Uni-Directional Print On ESC U 1

Uni-Directional Print Off ESC U 0

VT

27 52

27 45 49

27 45 48

27 85 49

27 85 48

11

74

Microline 490/491 User’s Guide

Appendix C: Specifications

Note: Specifications are subject to change without notice.

Print Method

Impact dot matrix

Printhead

24 pins, 0.20 mm (0.0079") diameter, with thermal protection

Interfaces

Standard: Centronics parallel, IEEE-1284 compliant

USB 1.1

Optional: RS-232C Serial

Ethernet Print Servers:

6120i 10/100 Base-TX Internal

6020e 10/100 Base-T External

6010e 10 Base-T External

Receive Buffer Size

Maximum 128K

Reliability

Ribbon Life

4 million characters, on average, 10 cpi utility

Printhead Life

400 million characters average in 10 cpi draft mode at

25% duty and 35% page density

Mean Time Between Failures (MTBF)

20,000 hours at 25% duty cycle and 35% page density

Mean Time to Repair (MTTR)

15 minutes

75

Emulations (co-resident)

• Epson LQ

• IBM Proprinter X24e / XL24e

• IBM X24e AGM / XL24e AGM

Print Speed

Mode Pitch

High Speed Draft (HSD) 10 cpi*

Utility

Letter Quality (LQ)

10 cpi

12 cpi

15 cpi

17.1 cpi

20 cpi

10 cpi

12 cpi

15 cpi

17.1 cpi

20 cpi

* Characters per inch

† Characters per second

76

Microline 490/491 User’s Guide

Speed

420 cps†

315 cps

378 cps

472 cps

269 cps

315 cps

105 cps

126 cps

157 cps

180 cps

210 cps

Characters per Line (cpl)

Setting

10 cpi

12 cpi

15 cpi

17.1 cpi

20 cpi

ML490

80 cpl

96 cpl

120 cpl

137 cpl

160 cpl

ML491

136 cpl

163 cpl

204 cpl

233 cpl

272 cpl

Graphics Resolution

360 x 360 dpi maximum (24-dot, hex density)

Paper Thickness: Tractor Feed

Rear Feed: 0.014" (0.36 mm) maximum

Bottom Feed: 0.017" (0.44 mm) max.

Requires optional push or pull tractor.

Resident Fonts

Print Quality

Letter Quality

Utility

Available Fonts

Courier, Gothic, Orator, Prestige,

Roman, Swiss, Swiss Bold

Gothic

Bar Codes

• Code 39

• UPC A, UPC E

• EAN 8, EAN 13

• Interleaved 2 of 5

• Code 128

• Postnet

Resident Typefaces

Mode/Font

LQ Courier

Size: Style

10 & 12 cpi: Normal, Superscript, Subscript

Proportional: Normal, Superscript, Subscript

8 point: Normal

Scalable: 11 to 64 points

10 cpi, 12 cpi, Proportional: Normal LQ Letter

Gothic

LQ Prestige

LQ Orator

LQ Roman

10 cpi, 12 cpi, Proportional: Normal

10 cpi, 12 cpi, Proportional: Normal

10 & 12 cpi: Normal, Superscript, Subscript

Proportional & 8 point: Normal

Scalable: 11 to 64 points

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

Paper Specifications: ML490

Single (Cut) Sheets

Feed: Top Only

Weight: 14 to 24 lb. US Bond (52.6 to 90 g/m

2

)

Width Range: 7.2" to 8.5" (183 to 216 mm)

Single-part, continuous forms

Feed: Rear, Bottom*

Weight: 12 to 24 lb. US Bond (45 to 90 g/m 2 )

Width Range: 3" to 10" (76 to 254 mm)

Carbonless continuous forms (orig. + 4 copies)

Feed: Rear, Bottom*

Weight: 9 to 11 lb.

Width Range: 3" to 10" (76 to 254 mm)

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

78

Microline 490/491 User’s Guide

Labels

Feed: Bottom* Only

Weight: Not applicable

Width Range: 3" to 10" (76 to 254 mm)

Envelopes, single feed

Feed: Top Only

Weight: Max. 24 lb.

Width Range: 6.5" to 9.5" (165 to 241 mm)

Envelopes, continuous feed, non-overlap

Feed: Bottom* Only

Weight: Max. 24 lb.

Width Range: 6.5" to 9.5" (165 to 241 mm)

Card Stock

Feed: Bottom*

Weight: Max. 100 lb. Index (180 g/m

2

)

Width Range: Not applicable

Paper Specifications: ML491

Single (Cut) Sheet

Feed: Top Only

Weight: 14 to 24 lb. US Bond (52.6 to 90 g/m

2

)

Width Range: 7.2" to 14.3" (182.8 to 363.2 mm)

Single-part, continuous forms

Feed: Rear, Bottom*

Weight: 12 to 24 lb. US Bond (45 to 90 g/m 2 )

Width Range: 3" to 16" (76.2 to 406.4 mm)

Carbonless continuous forms

Feed: Rear, Bottom*

Weight: 9 to 11 lb.

Width Range: 3" to 16" (76.2 to 406.4 mm)

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

Labels

Feed: Bottom* Only

Weight: Not applicable

Width Range: 3" to 16" (76.2 to 406.4 mm)

Envelopes, single feed

Feed: Top Only

Weight: Max. 24 lb.

Width Range: 6.5" to 9.5" (165.1 to 241.3 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)

Card Stock

Feed: Bottom* Only

Weight: Max. 100 lb. Index (180 g/m

2

)

Width Range: Not applicable

Specifications

79

Environmental Requirements

Temperature

Operating: 41 to 95°F (5 to 36°C)

Storage: 14 to 122°F (-10 to 50°C)

Humidity

Operating: 20 to 80% RH

Storage: 5 to 95% RH

Electrical Requirements

• 120 volts ac, (+6%, -15%)

50 or 60 Hz (±2%)

78 W Typical, 10 W idle

• 230 ac, (+15%, -14 %)

50 or 60 Hz (±2%)

78 W Typical, 10 W idle

Physical Specifications

Note: Height dimensions do not include the acoustic cover.

ML490

Size (WxDxH): 17.1" x 16.1" x 6"

(434 x 409 x 153 mm)

Weight: 16.7 lbs. (7.6 kg)

ML491

Size (WxDxH): 23.1" x 16.1" x 6"

(588 x 409 x 153 mm)

Weight: 21.1 lbs. (9.6 kg)

80

Microline 490/491 User’s Guide

Appendix D: Installation

Location

• 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.

Printer

Ribbon Cartridge

Power Cord

81

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.

82

Microline 490/491 User’s Guide

4 Use the tabs (1) to lift and remove the sheet guide, then remove the shipping restraint.

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.

Installation

83

Install the Ribbon Cartridge

Important!

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.

1 Make sure the printer is turned OFF.

2 Open the access cover and center the printhead (1).

CAUTION!

The printhead may be HOT!

3 Unpack the new ribbon cartridge and install it on the printhead.

Important!

Do not remove the ribbon shield (1) from the ribbon!

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.

84

Microline 490/491 User’s Guide

Power Connection

1 Make sure both the printer and the computer are OFF.

2 Plug the power cord into the back of the printer, then into a grounded outlet.

Computer Connections

Parallel (LPT): IEEE 1284

• Requires bidirectional cable, max. length 6 ft. (1.8 m), not supplied.

• 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

USB: Specification 1.1 Compliant

• Requires USB 1.1 cable, maximum length 19.7 ft. (5 m), not supplied.

• 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.

Loading Paper

For instructions on loading paper, see “Loading Paper” in

Chapter 5.

3 Turn the computer and printer back on.

86

Microline 490/491 User’s Guide

Testing the Printer

• Font Sample Test

• Rolling ASCII Test

• Hexadecimal Dump Mode

Font Sample Test

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.

The Font Sample Test prints a sample of the fonts standard to the printer.

The top of the printout shows the Printer Model, Emulation,

Country Code, Interface, and Firmware Revision Level.

1 Make sure paper is loaded.

2 Turn off the printer.

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.

Installation

87

Rolling ASCII Test

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.

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).

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.)

The printer prints the rolling ASCII text page after page.

4 Press

SEL

to end the test.

88

Microline 490/491 User’s Guide

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.

For example, the following line of BASIC code

LPRINT CHR$ (27);”0”;CHR$ (30);”This is an example of a hexadecimal dump.” would print like this:

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.

Printer Drivers

Note: In the ASCII format, all non-printable characters will be represented by a period.

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.

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.

Installation

89

Loading the OKI Driver

Parallel Interface

1 Insert the CD into your CD-ROM drive.

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.

2 Select your printer model.

3 When the Menu Installer window appears, click the Printer

Software button.

4 Follow the on-screen instructions.

USB Interface

1 Turn the printer on.

The Windows Add New Hardware Wizard window displays.

2 Click Next.

3 Insert the CD into your CD-ROM drive.

4 Follow the on-screen instructions to install the software for your printer model.

Using a Compatible Driver

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.

Epson LQ

• Epson LQ 870/1170

• Epson LQ 80/1000

• Epson LQ 2500

IBM Proprinter

• IBM Proprinter X24e/XL24e

• IBM Proprinter X24/XL24

• IBM Proprinter

IBM X24e AGM/XL24e AGM

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.

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Microline 490/491 User’s Guide

Index

A

Accessories ............................................. 67

Alignment problems ................................. 9

ASCII Test .............................................. 88

Auto Carriage return ............................... 35

Auto LF (Line Feed) ........................ 32, 35

Auto Select ............................................. 32

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

Clearing ............................................. 37

Receive Buffer Size ........................... 75

C

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

Epson LQ ..................................... 68–71

IBM Proprinter ............................ 72–81

Control Codes ......................................... 68

Cut Sheet Feeder ..................................... 67

E

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

91

F

Factory defaults, menu mode ................. 27

Font Sample Test .................................... 87

Fonts

Embedded Printer Commands ........... 61

Resident ............................................. 77

Selecting ............................................ 39

Forms Tear-Off ....................................... 37

Changing ............................................ 18

Top of Form ................................ 12, 17

Wait Time ........................................... 40

Front Panel

Keys ..................................................... 9

Menu Mode ........................................ 26

G

Gothic font .............................................. 77

Graphics

Printing .............................................. 37

Bi-directional ................................ 31

Uni-directional .............................. 31

Resolution .......................................... 76

GROUP, Menu Mode ............................. 26

H

I

Height, double height printing ............... 40

Hex Dump Mode .................................... 89

Humidity ................................................. 80

I-Prime ...................................... 33, 37, 60

IBM

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

L

Labels .............................................. 78, 79

Language ................................................ 29

Length, Page

Rear Feed ........................................... 30

Top Feed ............................................ 31

Lights, Front Panel ................................. 23

Limited Operation ...................... 9, 38, 64

Line Spacing ........................................... 37

Bottom Feed ...................................... 30

Rear Feed ........................................... 30

Top Feed ............................................ 31

M

Margin, Bottom ............................... 31, 35

Mean Time Between Failures (MTBF)

7, 75

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

92

Microline 490/491 User’s Guide

O

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

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

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 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

R

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

Resolution (Graphics) ............................. 76

Ribbon Cartridge

Replacement Part No. ........................ 66

Replacing ........................................... 41

Ribbon Shield ........................... 42, 62, 84

Roll Paper Stand ..................................... 67

RS-232C Serial Interface ........................ 75

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

Embedded commands ........................ 61

Matching drivers to emulations ......... 61

Software vs. printer settings .............. 60

Specifications ......................................... 75

Speed, print, graphics ............................. 37

94

Microline 490/491 User’s Guide

Standard Character Set ........................... 29

Static charges and paper ......................... 64

Symbol Sets ..................................... 29, 37

T

TEAR

Front Panel key .................................. 18

TEAR feature ..................................... 17

Temperature Specifications .................... 80

Tests

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

Resident ............................................. 77

Selecting ..................................... 23, 39

Software commands .......................... 23

U

Uni-directional printing, graphics .......... 31

Utility

Front Panel Light ............................... 77

Print Speeds ......................................... 7

Utility Mode Print Quality ................. 22

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

Z

Zero character (slashed, unslashed) . 29, 40

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