Oki MICROLINE 720 User manual

MICROLINE
720/721
Printer Handbook

Every effort has been made to ensure that the information in this document is com-
plete, accurate and up-to-date. OKI assumes no responsibility for the results of errors
beyond its control. OKI also cannot guarantee that changes in software and equip-
ment made by other manufacturers, and referred to in this handbook, will not affect
the applicability of the information in this manual. ention of software products manu-
factured by other companies does not necessarily constitute endorsement by OKI.
OKI and ICROLINE are registered trademarks of OKI Electric Industry Company,
Ltd..
IB and PC are registered trademarks of International Business achines Corpora-
tion.
Epson is a registered trademark of Seiko Epson Corp. Lotus and 1-2-3 are registered
trademarks of Lotus Development Corporation. icrosoft and S-DOS are regis-
tered trademarks and Windows is a trademark of icrosoft Corporation.
WordPerfect is a registered trademark of WordPerfect Corporation.

Important Safety Instructions
Your OKI printer has been carefully designed to give you years of safe, reliable per-
formance. As with all electrical equipment, however, there are a few basic precau-
tions you should take to avoid hurting yourself or damaging the unit:
• Read the setup and operation instructions in this manual carefully. Be sure to
save it for future reference.
• Read and follow all warning and instruction labels on the printer itself.
• Unplug the printer before you clean it. Use only a damp cloth; do not use liquid
or aerosol cleaners.
• Place your printer on a firm, solid surface. If you put it on something unsteady,
it might fall and be damaged; if you place it on a soft surface, such as a rug, sofa,
or bed, the vents may be blocked, causing it to overheat.
• To protect your printer from overheating, make sure no openings on the printer
are blocked. Don’t put the printer on or near a heat source, such as a radiator or
heat register. If you put the printer in any kind of enclosure, make sure it is well
ventilated.
• Do not put anything into the ventilation slots on the sides of printer, you could
get a shock or cause a fire.
• The printhead can get quite hot when it has been printing for a length of time.
Do not touch the printhead untill it has had a chance to cool off.
• Do not use your printer near water, or spill liquid of any kind into it.
• Be certain that your power source matches the rating listed on the back of the
printer. If you’re not sure, check with your dealer or with your local power com-
pany.
• Your printer has a grounded plug as a safety feature, and it will only fit into a
grounded outlet. If you can’t plug it in, chances are you have a non-grounded
ontlet; contact an electrician to have it replaced with a grounded outlet. Do not
use an adapter to defeat the grounding.
• To avoid damaging the power cord, don’t put anything on it or place it where it
will be walked on. If the cord becomes damaged or frayed, replace it immedi-
ately.

• If you’re using an extension cord or power strip with the printer, make sure that
the total of the amperes required by all the equipment on the extension is less
than the extension’s rating. Generally, the total ratings of all equipment plugged
into any one power line should not exceed 15 amperes. Don’t exceed this unless
you know that the power line your equipment is plugged into has a rating above
15 amperes.
• Aside from the routine maintenance described in this handbook, don’t try to
service the printer yourself; opening the cover may expose you to shocks or
other hazards. Don’t make any adjustments other than those outlined in the
manual – you might cause damage requiring extensive repair work.
• If anything happens that indicates that your printer is not working properly or
has been damaged, unplug it immediately and follow the procedures in Chap-
ter 5. These are some of the things to look for:
The power cord or plug is frayed or damaged.
Liquid has been spilled into the housing, or the printer has been exposed to
water.
The printer has been dropped or its cabinet has been damaged.
The printer doesn’t function normally when you’re following the operating
instructions.
• Screen jitter on your CRT may occur in an environment where the space be-
tween your printer and CRT is narrow (200 mm or less). In such cases, open up
the space.

Contents
Introduction ............................................................................................................. 1
Chapter 1: Installation ........................................................................................... 3
Unpacking ...................................................................................................................3
Removing Shipping Retainers........................................................................4
Installing Ribbon Cartridge ......................................................................................5
Making Connections ..................................................................................................6
Connection with Comp ter ............................................................................6
Connection with Power...................................................................................8
Chapter 2: Loading Paper ...................................................................................... 9
Loading Single-Sheet Paper .................................................................................... 11
Loading Rear-Feed Paper ........................................................................................14
Paper Handling.........................................................................................................21
Tear Feat re.....................................................................................................21
Forms Tear-off Feat re ..................................................................................22
Paper Park Feat re .........................................................................................22
Switching Paper Paths ...................................................................................23
Chapter 3: Operation ............................................................................................ 25
Control Panel.............................................................................................................25
Print Mode .................................................................................................................27
Indicator Lights ..............................................................................................27
B ttons .............................................................................................................28
Men Mode ...............................................................................................................32
Sample Men ..................................................................................................33
S mmary of Men Settings ..........................................................................34
Men Mode Indicator Lights .......................................................................37
Men Mode B ttons ......................................................................................37
Resetting Men to Factory Defa lts ............................................................38

Performing Basic Tasks ............................................................................................39
Selecting Print Q ality ..................................................................................39
Selecting Character Pitch ..............................................................................40
Testing Yo r printer .......................................................................................41
Resetting Top of Form ...................................................................................45
Using Bar codes ..............................................................................................45
Chapter 4: Working ith Soft are................................................................... 49
Basic Terminology ....................................................................................................49
Printer Commands ......................................................................................... 49
Em lations ......................................................................................................50
Printer Drivers ..........................................................................................................50
Compatible Printer Drivers (DOS) ..............................................................50
Windows Printer Drivers ..............................................................................51
Chapter 5: Problem Solving, Maintenance, & Service...................................53
Problem Solving .......................................................................................................53
Maintenance ..............................................................................................................56
Replacing the Ribbon Cartridge...................................................................56
Clearing Paper Jams ......................................................................................59
Cleaning the Ho sing ....................................................................................63
Accessories ................................................................................................................64
Replacement Parts..........................................................................................66
Appendix A: Specifications ................................................................................ 67
Appendix B: Menu Selections ............................................................................ 71
Explanation of Men Items .....................................................................................74
Appendix C: Printer Commands........................................................................ 81
IBM Proprinter Printer Commands .......................................................................81
Epson FX Printer Commands .................................................................................85
OKI Microline (ML) Printer Commands ...............................................................89

Appendix D: ASCII Character Codes ............................................................... 93
Lower ASCII Character Sets ...................................................................................93
Upper ASCII Character Sets....................................................................................97
Epson International Character S bstit tions .....................................................101
IBM International Character S bstit tions .........................................................102
MICROLINE International Character S bstit tions ......................................... 103
Code Page Character Sets......................................................................................104
Appendix E: Interfacing .................................................................................... 107
Pin Assignments for Parallel Interface Signals ..................................................107
Universal Serial B s (USB) ....................................................................................108
Installing the Serial Interface ................................................................................109
Pin Assignments for Serial Interface Signals ...................................................... 111

ML720/721 Printer Handbook 1
This Guide is arranged to help you get your new MICROLINE 720 or 721 printer set
up and running uickly as well as providing you with more detailed information for
future reference. Here’s how it’s organised:
• Chapter 1 (Installation) shows you how to get your printer ready to run and
how to connect it to your computer.
• Chapter 2 (Loading Paper) explains how to load paper for any of the two meth-
ods of paper feed.
• Chapter 3 (Operation) describes how to control your printer from the front panel.
It also explains how to change the defaults, how to test your printer and how to
use bar codes.
• Chapter 4 (Working with Software) gives you information on selecting a driver
and installing your printer on popular software packages.
• Chapter 5 (Problem Solving/Maintenance/Service) gives helpful hints on how
to solve common printer problems and how to maintain your printer in tip-top
shape.
• Appendices A through E contain a variety of reference material, including speci-
fications, menu listings, lists of printer programming commands and ASCII
characters.
Introduction

2Introduction

ML720/721 Printer Handbook 3
Chapter 1: Installation
This chapter explains how to unpack and install your new printer.
Unpacking
Unpack your printer and make sure you have the following items. If you are missing
any of these items, contact your dealer immediately for a replacement.
• Printer
• Ribbon cartridge
• AC cord
It is not included in case of
some models.
• Printer Handbook & Software on
CD-ROM.
Interface cable and paper are sold
separately.