OKI ML5720, ML5721, ML5790, ML5791 User Guide

ML5720/ML5721/ML5790/ML5791

REFACE

Every effort has been made to ensure that the information in this document is complete, accurate, and up-to-date. The manufacturer assumes no responsibility for the results of errors beyond its control. The manufacturer 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 the manufacturer.

While all reasonable efforts have been made to make this document as accurate and helpful as possible, we make no warranty of any kind, expressed or implied, as to the accuracy or completeness of the information contained herein.

The most up-to-date drivers and manuals are available from:

www.okiprintingsolutions.com

Oki is a registered trademark of Oki Electric Industry Company, Ltd.

Oki Printing Solutions is a trademark of Oki Data Corporation.

Hewlett-Packard, HP, and LaserJet are registered trademarks of Hewlett-Packard Company.

Microsoft, MS-DOS and Windows are registered trademarks of Microsoft Corporation.

ENERGY STAR is a trademark of the United States Environmental Protection Agency.

Apple, Macintosh, Mac and Mac OS are trademarks of Apple Inc.

Other product names and brand names are registered trademarks or trademarks of their proprietors.

As an ENERGY STAR Program Participant, the manufacturer has determined that this product meets the ENERGY STAR guidelines for energy efficiency.

This product complies with the requirements of the Council Directives 2004/ 108/EC (EMC), 2006/95/EC (LVD) and 2009/125/EC (EuP) as amended where applicable on the approximation of the laws of the member states relating to electromagnetic compatibility, low voltage and Energy Using Products.

This product complies with EN55022 Class B. However, when fitted with the optional network interface card, RS232C serial interface card or optional cutsheet feeder, compliance to EN55022 is Class A. In a domestic environment this configuration may cause radio interference, in which case the user may be required to take adequate control measures.

The following cables were used to evaluate this product to achieve EMC directive 2004/108/EC compliance and configurations other than this may affect that compliance.

CABLE TYPE LENGTH

(METRE)

CORE SHIELD

Power 1.8

USB 5.0

Parallel 1.5

LAN 5.0

Serial 2.1

✘✘

✘ ✔

✘✘

✘ ✔

Preface > 2

ANUFACTURER

Oki Data Corporation, 4-11-22 Shibaura, Minato-ku, Tokyo 108-8551, Japan

MPORTER TO THE

Oki Europe Limited (trading as OKI Printing Solutions) Blays House Wick Road Egham Surrey TW20 OHJ United Kingdom

For all sales, support and general enquiries contact your local distributor.

NVIRONMENTAL INFORMATION

EU/

AUTHORISED REPRESENTATIVE

Manufacturer > 3

ONTENTS

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Manufacturer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Importer to the EU/authorised representative. . . . . . . . . . . . . . . . . . . . .3

Environmental Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Notes, cautions and warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

About this guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

On-line usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Printing pages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Retaining packing materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Identifying component parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Internal view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Rear view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Locating your printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Powering on your printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Powering off your printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Producing a test print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Connecting to a computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Interconnecting printer and computer . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Interconnection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Emulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Installing the printer driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Printing a test page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Printing from a computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

OKI DIPUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Controlling the printer using DIPUS . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Paper handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Loading continuous forms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Feeding continuous forms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Rear feed (push) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Front feed (push) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Tearing off continuous forms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Aligning the tear-off perforations. . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Removing continuous forms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Loading cut sheet paper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Ejecting cut sheet paper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Changing paper paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Loading the optional cut-sheet feeder . . . . . . . . . . . . . . . . . . . . . . . . .31

Loading the optional roll paper stand (ML5720/ML5790) . . . . . . . . . . . .32

Setting the Paper Thickness lever . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Operator panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Button functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Setting menu values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Confirming current settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Contents > 4

Menu setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Menu items and settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Initialising menu settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

Adjusting TOF position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Clearing paper jams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Cut sheet paper jammed in printer . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Continuous forms jammed in printer . . . . . . . . . . . . . . . . . . . . . . . . . .60

Responding to alarm conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

Responding to general problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

Cleaning your printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Printer exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Printer interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Consumables and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

Consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

Changing a ribbon cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

Consumable order information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

Installing Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

Installing the Cut-sheet feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

Installing the Roll paper stand (ML5720/ML5790) . . . . . . . . . . . . . . . . . . .75

Installing the Network and serial interface card. . . . . . . . . . . . . . . . . . . . .77

Option order numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

Oki Printing Solutions contact details . . . . . . . . . . . . . . . . . . . . . . . . . . .80

Contents > 5

OTES, CAUTIONS AND WARNINGS

NOTE A note provides additional information to supplement the main text.

CAUTION!

A caution provides additional information which, if ignored, may result in equipment malfunction or damage.

WARNING!

A warning provides additional information which, if ignored, may result in a risk of personal injury.

For the protection of your product, and in order to ensure that you benefit from its full functionality, this model has been designed to operate only with genuine original ribbon cartridges. Any other ribbon cartridge may not operate at all, even if it is described as “compatible”, and if it does work, your product's performance and print quality may be degraded.

Specifications subject to change without notice. All trademarks acknowledged.

Notes, cautions and warnings > 6

NTRODUCTION

Congratulations on purchasing this printer!

This printer series is designed to provide highly reliable letter quality printing and high resolution graphics for the desktop/office printing environment. It combines state-of-theart, 18-pin (ML5720/ML5721) and 24-pin (ML5790/ML5791), serial impact dot matrix printing technology with advanced materials and superior construction to provide high performance and versatility in a desktop sized unit. Careful attention to ergonomics and application needs provides user friendly operation for operators of varying technical capabilities.

BOUT THIS GUIDE

This manual is your user’s guide (check the web site, www.okiprintingsolutions.com, for the most up-to-date version) for your printer and forms part of the overall user support listed below:

> Installation Safety booklet: provides information as to safe use of the printer.

This is a paper document that is packaged with the printer and should be read before setting up your printer.

> Set-up guide: to describe how to unpack, connect and turn on your printer.

This is a paper document that is packaged with the printer.

> This User’s Guide: to help you to become familiar with your printer and make the

best use of its many features. Also included are guidelines for troubleshooting and maintenance to ensure that it performs at its best.

This is an electronic document stored on the manuals CD.

> Technical Reference Guide: to provide detailed technical information for

programmers and more technical users.

This is an electronic document available on the support web site.

> Network Guide: to provide detailed technical information for network

administrators to configure the optional accessory network interface.

This is an electronic document stored on the CD that accompanies the network interface card optional accessory.

> On-line Help: on-line information accessible from the printer driver and utility

software.

ON-

LINE USAGE

This guide is intended to be read on screen using an Adobe Acrobat Reader. Use the navigation and viewing tools provided in Acrobat.

You can access specific information in two ways:

> In the list of bookmarks down the left hand side of your screen, click on the topic of

interest to jump to the required topic. (If the bookmarks are not available, use the

“Contents” on page 4.)

> In the list of bookmarks, click on Index to jump to the Index. (If the bookmarks are

not available, use the “Contents” on page 4.) Find the term of interest in the alphabetically arranged index and click on the associated page number to jump to the page containing the term.

Introduction > 7

RINTING PAGES

The whole manual, individual pages, or sections may be printed. The procedure is:

1. From the toolbar, select File, then Print (or press the Ctrl + P keys).

2. Choose which pages you wish to print:

(a) All pages, (1), for the entire manual.

(b) Current page, (2), for the page at which you are looking.

1 2 3

page numbers.

3. Click on OK.

Introduction > 8

ETTING STARTED

WARNING!

If you have not already done so, familiarise yourself with the content of the Installation Safety booklet supplied with your printer.

ETAINING PACKING MATERIALS

After setting up your printer according to the instructions in the Set-up Guide, retain your packing materials and container in case you ever need to ship or transport your printer.

DENTIFYING COMPONENT PARTS

The main parts of your printer are identified and briefly explained below.

RONT VIEW

1. Power Switch: to turn the printer power ON/OFF.

2. Operator Panel: contains button switches and indicators (described in detail later see

“Operator panel” on page 36) that allow you to operate the printer.

3. Front Feed Paper Tray: to feed cut sheet from the front.

4. Front Cover: open to fit the front feed paper tray or to fit the tractor.

5. Platen Knob

6. Paper Type Lever: set according to the type of paper feed - front feed (cut sheet),

continuous rear feed, continuous front feed or continuous bottom pull.

7. Pull-up Guide Assembly support

8. Top Feed Paper Tray: raise to feed cut sheet paper from the top.

9. Paper Guide: can be adjusted as required to locate the left edge of cut sheet paper.

10. Top Cover: open and close for access, for example when changing a ribbon

cartridge. Keep closed for noise reduction.

Getting started > 9

NTERNAL VIEW

11. Paper Thickness Lever: set according to the thickness of the paper.

12. Ribbon Cartridge: holds the printer ribbon.

13. Print Head: prints the characters on the paper.

14. Pull-up Guide assembly: remove when using optional Pull tractor and optional Cut-

sheet feeder.

EAR VIEW

15. USB connector: connect to USB interface cable.

16. Parallel connector: connect to parallel interface connector.

17. Optional Serial/Network connector: connect to serial interface or network.

18. Optional CSF/RPS connector: connect to cut-sheet feeder or roll paper stand.

19. Ventilator

20. A/C Input: connect to printer power cable.

Getting started > 10

OCATING YOUR PRINTER

> Select a firm, solid surface on which to site your printer.

> Allow enough space around your printer (e.g. at least 60 cm from any wall) for easy

access to the paper feed paths.

> Make sure a grounded power outlet is available nearby.

OWERING ON YOUR PRINTER

WARNING!

Operations of this equipment are not warranted when the equipment is connected to UPS (Uninterruptible Power Supply) and/or inverter. Doing so may result in damage of this equipment. Do not use an UPS and/or inverter.

1. Ensure that your printer Power Switch is set to OFF.

Getting started > 11

2. Connect the power cable connector (1) A/C Input (2) on the printer.

3. Connect the power cable to a 220/240 V AC (3a) power outlet and switch on the outlet power (3b).

WARNING!

Be careful when inserting a three-pronged AC plug. Before plugging it in, check the position of the FG terminal. Incorrect insertion may cause damage not only to the printer main body but also peripheral devices and electric shock, smoke and ignition.

4. Turn the printer Power Switch to ON.

5. Check that the SLEEP, ALARM, SEL, TEAR, PRINT QUALITY, CHR PITCH and PRINT

SPEED indicators on the operator panel illuminate.

OWERING OFF YOUR PRINTER

1. Turn the printer Power Switch to OFF.

Getting started > 12

2. Switch off the outlet power (1a) and then unplug from the power outlet (1b).

3. Unplug the power cable connector (2) from the printer (3).

RODUCING A TEST PRINT

To check that your printer is operational, produce a test print on a sheet of 80 gsm A4 paper (for example) as follows:

CAUTION!

> Allow at least 5 seconds between turning the printer ON after

turning it OFF. A shorter time interval between turning ON/OFF operations may cause printer power failure.

> Do not turn the printer OFF while it is printing as this may result

in damage to the print head.

1. Turn the printer Power Switch to OFF.

NOTE Ensure that the ribbon cartridge is properly installed before printing a Test Page.

2. Set the Paper Type Lever to cut sheet and set the Paper Thickness Lever to position

3. Press and hold the SEL and LF/FF button and turn the Power Switch to ON. The SEL LED will flash.

4. Press and hold down the LF/FF button and then press the LOAD/EJECT button again. The alarm indicator should be illuminated to indicate that there is no paper in the printer.

5. With the long side of the paper against the paper guide, insert the paper carefully into the printer. The printer will automatically grip the paper.

6. The printer will start the test print.

NOTE If required, you can pause the test print by pressing the SEL button and then resume the test print by again pressing the SEL button.

Getting started > 13

7. When the test print has completed, press the LOAD/EJECT button to eject the paper.

NOTE If you want to abort the test print for any reason, press the SEL button followed by the LOAD/EJECT button to eject the paper and then turn the printer Power Switch to OFF.

Getting started > 14

ONNECTING TO A COMPUTER

In this section you will interconnect your printer and computer, install the printer driver in your computer and print a test page.

NTERCONNECTING PRINTER AND COMPUTER

NTERFACES

Your printer is equipped with two standard data interfaces:

> Parallel: for direct connection to a PC. This port requires a bi-directional (IEEE 1284

compliant) parallel cable.

> USB: for connection to a PC running Windows 2000 or above. This port requires a

shielded cable 5m long conforming to USB version 2.0.

NOTE

> This Interface default is set to Auto Interface see “Host Interface” on

page 53. The Auto Interface function will enable the printer to receive

data from the computer even when all the interfaces i.e. the Parallel, USB and the optional Network or Serial interfaces are connected at the same time. You can also select an individual interface to connect to the printer.

> Interface cables are not supplied with your printer.

The following interfaces are available as optional accessories and are described in their accompanying installation documentation:

> RS232 Serial interface

> 100BASE-TX/10BASE-T network connection

NOTE Refer to the Network Guide for setting up the network connection.

Connecting to a computer > 15

NTERCONNECTION

1. Ensure that both printer and computer are turned OFF.

2. Connect the required interface cable, USB (1) or parallel (2), or serial or network (3)

to the printer and then to the computer.

NOTE With the Auto Interface connection enabled, you can also connect all the interfaces at the same time.

3. Turn ON the printer and then turn ON the computer.

MULATIONS

The factory default emulation for your printer is IBM PPR.

If you wish to change to one of the Epson or Microline emulations, see “To change a

setting:” on page 41 and “Printer Control” on page 42.

NSTALLING THE PRINTER DRIVER

The driver for your printer is provided on the CD included with the printer.

Insert the Drivers CD into your computer and follow the on-screen instructions to install the printer driver for use with your printer.

NOTE If the CD does not AutoPlay, click Start > Run > Browse, then browse to your CD-ROM drive, double-click Setup.exe and click OK.

RINTING A TEST PAGE

As an example, using Windows XP:

1. Use Start > Printers and Faxes to show the Printers and Faxes window.

2. Highlight the driver for your printer.

3. Use File > Properties to show the Properties window.

4. On the General tab, click the Print Test Page button.

5. Ensure that a test page has printed, verifying your printer – computer setup.

Connecting to a computer > 16

RINTING FROM A COMPUTER

When printing to your printer from, for example, a Windows application on your computer, make your printing selections from the driver windows that appear on screen. These driver windows have been designed to be easy to use and intuitive while supplementary on-line help is available by clicking each window Help button.

OKI DIPUS

The OKI DIPUS utility allows you remote access to the printer settings using the available applications. You can access DIPUS from Start > All Programs > Okidata > OKI DIPUS.

ONTROLLING THE PRINTER USING

There are four utilities available within OKI DIPUS. Each utility provides access to the printer settings from your computer. Using these utilities you can change the button settings, menu settings, top of form settings and also view the current status of the printer. Any changes made can then be uploaded to the printer and it will be saved to the printer as new settings. These utilities are an alternative to the printer operator panel.

Button setup utility

Using this utility you can activate or deactivate buttons on your printer operator panel. Each button and its function is described in a message view.

DIPUS

Menu setup utility

Using this utility you can view and change your printers’ Menu settings.

Status monitor

The Status Monitor utility allows you to view your printers’ current status for example, Online, On-line (power saving) and so on. In the event of a printer error occurring, a warning message is also displayed.

TOF setup utility

Using this utility you can now set the first line of print (TOF) for each page. This utility allows you to treat each print job individually.

For detailed information on each utility and the different settings contained within, refer to the on-line help, by clicking each window Help button.

Printing from a computer > 17

APER HANDLING

This section describes how to use cut sheet paper and continuous forms in your printer.

OADING CONTINUOUS FORMS

Setting up continuous forms

1. To avoid paper feeding problems, carry out the following:Check your printer is on a

surface approximately 75 cm above the floor.

2. Position the continuous forms supply directly below the printer, no more than 3 cm left or right of the printer paper path.

3. Ensure the rear of the printer is close to and parallel with the edge of the surface and at least 60 cm from any wall.

Rear feed (Push)

60 cm

75 cm

Bottom feed (Pull)

NOTE When the optional Pull Tractor is used.

3 cm

60 cm

75 cm

3 cm

Paper handling > 18

Front feed (Push)

3 cm

EEDING CONTINUOUS FORMS

EAR FEED (PUSH

1. Ensure that the printer is turned ON.

)

NOTE If there is a cut sheet in the printer, eject it as described in “Ejecting cut sheet

paper” on page 30.

60 cm

75 cm

2. Ensure the Paper Type Lever is set to Continuous Forms “REAR”.

3. Open the Top Cover and adjust the Paper Thickness Lever to suit the paper. See

“Setting the Paper Thickness lever” on page 33.

After adjusting, close the Top Cover.

NOTE If the Paper Thickness Lever setting does not match the paper being used, paper feeding and printing may not work properly.

4. Remove the top tray by holding the tray by the tabs on both sides and pulling it up from the printer.

REAR

Paper handling > 19

5. Lift the locking lever (1) of the right Pin Tractor and slide the Pin Tractor as required to adjust the paper position relative to the first horizontal character centre mark.

Press the locking lever back down to lock the Pin Tractor in the desired position.

6. Lift the locking lever (2) of the left Pin Tractor and slide the Pin Tractor to the required position to accommodate the width of the continuous forms to be used. Move the rear paper guide (3) to midway between the left and right Pin Tractors.

7. Open the left and right Pin Tractor covers (1) and feed the continuous forms in the direction of the arrows, locating the sprocket holes (2) in the forms onto the sprocket pins. Ensure that the forms are properly aligned on the sprocket pins, then close the covers.

8. Adjust the left Pin Tractor to accommodate the width of the continuous forms, taking care that the forms are held neither too loosely nor too tightly between the Pin

Paper handling > 20

Tractors. Press the locking lever down to lock the right Pin Tractor in the desired position.

9. Lower the top paper tray and slide it towards the front of the printer until the marks align.

10. Press the LOAD/EJECT button. The continuous forms will be taken into the printer and positioned at the first line print position and the SEL indicator will illuminate.

NOTE

> Raise the top paper tray if the paper does not feed properly when the rear

tractor is used. This will stabilise the paper movement and prevent significant misalignment between the sheets when multi-part paper is used and also erratic line spacing.

> When loading a specific type of continuous media using the Rear Feed, if

you encounter paper jam, erratic line spacing or misalignment between the sheets of the multi-part paper due to the paper crumpling at the perforations and varying binding strength, use the optional pull tractor (bottom feed) to load this type of media.

Dismounting the rear pin tractor

To dismount:

1. Ensure that the printer is turned OFF.

2. Remove the top tray by holding the tray by the tabs on both sides and pulling it up

from the printer.

3. Hold the Pin Tractor by its tabs on both sides.

Paper handling > 21

4. Push the tabs in the arrow direction and then pull the Pin Tractor in your direction to release it.

RONT FEED (PUSH

)

NOTE If there is a cut sheet in the printer, eject it as described in “Ejecting cut sheet

paper” on page 30.

Moving the tractor assembly

1. Ensure that the printer is turned OFF.

2. Disconnect the power cord.

3. Open the Top Cover.

WARNING!

Be careful as the print head may be hot after operation. Allow it to cool before touching it.

Paper handling > 22

4. Remove the Pull-up Guide assembly support.

5. Remove the top tray by holding the tray by the tabs on both sides and pulling it up.

6. Turn the printer, so that the back of the printer is facing you.

7. Remove the tractor assembly. See “Dismounting the rear pin tractor” on page 21.

8. Turn the printer, so that the front is facing you.

9. Replace the top paper tray by aligning the arrows and then pushing it down.

Paper handling > 23

10. Close the Top Cover.

11. Open and remove the front cover (1).

NOTE If front cover is already open and the front cut sheet paper tray has been installed, gently lift the tray from the bottom and remove it, and then remove the front cover.

12. Holding by the tabs, guide the tractor into the side frames and push it downwards to lock it in place.

Loading continuous form (front)

1. Ensure that the printer is turned ON.

2. Ensure that the Paper Type Lever is set to Continuous form “FRONT” .

3. Open the Top Cover, adjust the Paper Thickness Lever to suit the paper

the Paper Thickness lever” on page 33.

4. Lift the locking lever of the left Pin Tractor and slide the Pin Tractor as required to adjust the paper position then press the locking lever back down to lock the Pin Tractor in the desired position.

5. Lift the locking lever of the right pin tractor and slide the Pin Tractor to the required position to accommodate the width of the continuous forms to be used. Move the paper guide midway between the left and right Pin Tractors.

Paper handling > 24

FRONT

. See “Setting

6. Open the left and right Pin Tractor covers and feed the continuous forms in the direction of the arrow, locating the sprocket holes in the forms onto the sprocket

pins.

NOTE Ensure that paper is fed straight into the printer to avoid the possibility of skew printing, irregular line feeding and paper jam.

7. Ensure that the forms are properly aligned on the sprocket pins, then close the Pin Trac t or c ov ers .

8. Adjust the right Pin Tractor to accommodate the width of the continuous forms, taking care that the forms are held neither too loosely nor too tightly between the Pin Tractors. Press the locking lever down to lock the right Pin Tractor in the desired position.

9. Attach the front cover back in position and close the front cover.

10. Press the LOAD/EJECT button. The continuous forms will be taken into the printer

and positioned at the first line print position and the SEL indicator will illuminate.

NOTE When loading a specific type of continuous media using the Front Feed, if you encounter paper jam, erratic line spacing or misalignment between the sheets of the multi-part paper due to the paper crumpling at the perforations and varying binding strength, use the optional pull tractor (bottom feed) to load this type of media.

Dismounting the front pin tractor

To dismount:

1. Ensure that the printer is turned OFF.

2. Hold the Pin Tractor by its tabs on both sides.

Paper handling > 25

3. Push the tabs in the arrow direction and then pull the Pin Tractor in your direction to release it.

EARING OFF CONTINUOUS FORMS

1. With the SEL indicator illuminated, press the TEAR button to feed the continuous

forms to the tear-off position.

2. Carefully tear off the forms along the tear-off perforations in the direction shown. Using excessive force may result in tearing at a position other than the tear-off perforations.

3. When data is received by the printer or when the SEL button is pressed to select the printer, the continuous forms is repositioned to the first line print position.

LIGNING THE TEAR-OFF PERFORATIONS

If the tear-off perforations are not aligned with the paper cutter on the Top Cover, align them as follows:

1. With the SEL indicator illuminated, press the TEAR button to move the tear-off perforations to the paper cutter on the Top Cover.

2. Check the position of the tear-off perforations relative to the paper cutter. Adjust to the desired tear-off position using Line Feeds (LF):

(a) To move the form forward, press the TEAR and the SEL buttons together.

(b) To move the form backward, press the TEAR and the LF/FF buttons together.

NOTE ML5720/ML5721: Line Feeds are at 1/144 in.

ML5790/ML5791: Line Feeds are at 1/180 in.

3. Release the buttons after the tear-off perforations have been aligned with the paper cutter.

When data is received by the printer or when the SEL button is pressed to select the printer, the paper will retract to the new position.

Paper handling > 26

EMOVING CONTINUOUS FORMS

1. Tear off the continuous forms. See “Tearing off continuous forms” on page 26.

2. Press the LOAD/EJECT button to move the front edge of the continuous forms

backwards to the Pin Tractors.

NOTE

> The printer switches to off line mode.

> The ALARM indicator illuminates to indicate there is no paper present.

> If sprocket holes of the last page of the forms disengage from the

sprocket pins, do not attempt to eject the paper to avoid the possibility of a paper jam.

3. Lift the Pin Tractor covers (1) and remove the forms.

4. Close the Pin Tractor covers.

Paper handling > 27

OADING CUT SHEET PAPER

1. Ensure that the printer is turned ON.

NOTE If there are any continuous forms in the printer, eject them as described in

“Removing continuous forms” on page 27.

2. Ensure that the Pin Tractor covers (1) are closed to avoid the possibility of paper jams.

3. Ensure the Paper Type Lever is set to Cut Sheet.

4. To load the cut sheet in the Top Feed Paper Tray, raise the top tray.

To load the cut sheet in the Front Feed Paper Tray, open the front cover and install the front paper tray.

Paper handling > 28

5. Set the left margin of the paper by adjusting the Paper Guide (1) along the scale (2) relative to the start of printed line marker arrow.

Top Feed Front Feed

6. Open the Top Cover and Adjust the Paper Thickness Lever to suit the paper. See

“Setting the Paper Thickness lever” on page 33.

NOTE If the Paper Thickness Lever setting does not match the paper being used, paper feeding and printing may not work properly.

7. With the printing side downwards for top feed and upwards for front feed and the left edge aligned with the Paper Guide (1), carefully insert the paper on the Paper Tray (2) into the printer until it is gripped.

Top Feed Front Feed

NOTE

> Ensure that the paper is accurately aligned along the Paper Guide to avoid

the possibility of skew printing and paper jam.

> When printing an envelope, do not fold up the flap. A flap aligned along

the Paper Guide can lead to skew printing.

> If you are feeding thick paper, push it in sufficiently until it touches the

feed rollers, to avoid the possibility of skew printing and paper jam.

Paper handling > 29

JECTING CUT SHEET PAPER

When the printer reaches the end of the cut sheet page it automatically ejects the page. If required, add another sheet for the printer to continue printing from where it left off.

To eject a cut sheet left in the printer, carry out the following:

1. Press the SEL button to put the printer off-line.

2. Press the LOAD/EJECT button and the paper is ejected to the Paper Tray.

NOTE Paper longer than A4 length (297 mm) may overlap and possibly fall off the Paper Tray.

HANGING PAPER PATHS

You can switch to cut sheet printing without removing continuous forms from the printer.

Continuous forms to cut sheet

1. Tear the continuous form at the tear off position.

2. Press the LOAD/EJECT button. The printer will retract the continuous form

automatically and set the printer in offline mode.

3. Set the Paper Type Lever to Cut Sheet.

4. To load cut sheet paper, see “Loading cut sheet paper” on page 28.

Cut sheet to continuous forms

1. Remove any cut sheet paper in the printer.

2. Set the Paper Type Lever to Continuous form (REAR or FRONT or PULL).

3. To load continuous forms, see “Loading continuous forms” on page 18.

Paper handling > 30

OADING THE OPTIONAL CUT-SHEET FEEDER

NOTE For installation instructions, see “Installing the Cut-sheet feeder” on page 73.

1. Paper Set Lever

2. Right Paper Guide

3. Front Sheet Support

4. Rear Sheet support

5. Left Paper Guide

6. Locking Lever

1. Ensure the Paper Type Lever is set to Cut Sheet.

2. Open the Top Cover and adjust the Paper Thickness Lever to suit the paper. See

“Setting the Paper Thickness lever” on page 33.

3. Remove the front sheet support (3).

4. Place the paper set lever in the RESET position (1).

5. Release the paper guides (2, 5) by pushing the locking levers (6) downward.

6. Move the left paper guide to the position where you wish to set the left-hand edge of

the sheet, making sure that this paper guide is not set to the right of the paper out sensor (the grove in the platen).

7. “Flex a paper stack (not more than 170 sheets of 60 gsm paper). Square the stack, turn over and repeat the bending. The stack of paper should not exceed 16mm thickness.

8. Insert the paper stack into the hopper and push it against the left paper guide (5), making sure that the paper fits under the corner separators.

9. Move the rear sheet support (4) to the center.

10. Adjust the right paper guide to the paper width (2).

Paper handling > 31

11. Push both paper guide locking levers (6) upward into the locked position.

12. Push the paper set lever gently backward into the SET position.

CAUTION!

Ensure that the paper set lever is closed (towards the SET position) before printing with the CSF. If it is left open, the friction rollers will not be able to feed the paper, and the printer will print on the platen and may damage the printhead and platen.

13. Attach the front sheet support (3).

OADING THE OPTIONAL ROLL PAPER STAND

NOTE For installation instructions, see “Installing the Roll paper stand (ML5720/

ML5790)” on page 75.

(ML5720/ML5790)

1. Roll Paper Stand

2. Paper Shaft

3. Paper Separator

4. Tension Bar

5. Paper Guide

1. Set the Paper Type Lever to RPS.

2. Open the Top Cover and adjust the Paper Thickness Lever to suit the paper. See

“Setting the Paper Thickness lever” on page 33.

3. Open the paper separator all the way.

4. Remove the paper roller.

Note that there is a disk on the left end of the roller.

5. Slide the roller into a tube of paper. Ensure the disk is on the left side and paper must roll up from the bottom.

6. Replace the paper roller back into the stand, with the disc on the left side.

Paper handling > 32

7. Feed the paper over the roller on the stand.

8. Set the paper onto the platen from the top of the tension bar.

9. Rotate the platen knob until the top edge of the paper reaches the roll paper, and

then set the Paper Type Lever to PULL to easily adjust the paper position.

10. Align the paper so that the exit and entry paper edges align.

11. Reset the Paper Type Lever to RPS.

12. Move the paper guide and adjust it to the width of the paper.

13. Lower the paper separator to its original position.

14. Turn the platen knob to move the paper to the point where you want printing to

start.

CORRECT PAPER PATH

a. Paper Roll b. Roll Paper Stand

c. Platen d. Paper Guide

ETTING THE PAPER THICKNESS LEVER

There are 10 lever positions for printing purposes. The 10th position is also to facilitate ribbon replacement.

Set the Paper Thickness lever for different paper types as follows:

LEVER POSITION

PAPER TYPE

1 2 3 4 5 6 7 8 9 10 REMARKS

Cut sheet paper See below

52 - 81 gsm X

81 - 128 gsm X

128 - 156 gsm X

Postcard X

Envelope X

Continuous paper See below

52 - 81 gsm X

81 - 128 gsm X

Paper handling > 33

PAPER TYPE

LEVER POSITION

1 2 3 4 5 6 7 8 9 10 REMARKS

Carbon paper or Pressure- sensitive paper (40 gsm)

2 part X

3 part X

4 part X

5 part X

6 part X

7 part X

Set the Paper Thickness lever for overall paper thickness as follows:

OVERALL PAPER THICKNESS LEVER POSITION

0.06 - 0.10 mm 1

0.11 - 0.15 mm 2

0.16 - 0.20 mm 3

0.21 - 0.25 mm 4

0.26 - 0.30 mm 5

0.31 - 0.35 mm 6

See below

0.36 - 0.40 mm 7

0.41 - 0.45 mm 8

0.46 - 0.50 mm 9

0.51 - 0.53 mm 10

NOTE

> Printing with lever positions 5 – 10 is not guaranteed.

> If the lever position does not suit the paper thickness, paper feeding and

printing may not work properly.

> Do not print bankbooks to avoid possible pin breakage/ribbon snagging.

> When lever positions 5 - 10 are selected, printing quality for carbon paper

may decline resulting in illegible characters for example.

Paper handling > 34

NOTE

> When using 3-inch wide media, change the Centering Position in the Menu

Settings to Mode 1. If the Centering Position is not set to 1, it will result in Paper Jam.

> When loading envelopes, set the head gap based on the thickness of the

overlapped and glued areas of the envelope and not the thin area. This will prevent dark printing in some areas on the envelope.

> Do not use glossy paper if it is not tested thoroughly. This type of paper is

left with marks from the paper feed roller or from rubbing. Also, the paper may not feed properly, causing incorrect line spacing.

> Using Seal-type cards (for example to print bank/credit card balance

statements) may cause ink to transfer when the printed sides overlap. Test it thoroughly to ensure it does not cause problems.

CAUTION!

> Do not use Labels in individual sheets as the printing is not

guaranteed. Test thoroughly before use.

> Be careful when using Labels as they may peel of their carrier

sheet if the adhesive is not strong. This can result in paper jam. Feed Labels from the Front Tray instead of the Top Tray, as feeding from the top may cause the Labels to peel off and cause paper jams.

For information on using Envelopes, Labels and Card stock paper, refer to the Technical Reference Guide.

Paper handling > 35

PERATING INSTRUCTIONS

PERATOR PANEL

The status/alarm indicators and button switches on the operator panel allow you to check printer status and control the printer. You can also use OKI DIPUS utilities to check printer status and control the printer from your computer, see “OKI DIPUS” on page 17.

Operating instructions > 36

NDICATORS

INDICATORS COLOUR STATUS MEANING

SEL Green ON Printer is on-line i.e. is available to print.

OFF Printer is off-line i.e. is not available to print.

FLASHING When flashing together with the ALARM

indicator, printing cannot be resumed at this stage. Turn the power OFF, verify that the carriage moves properly, then turn the power ON again.

If the problem is still there after you turn the power ON again, contact your dealer.

When flashing together with TEAR indicator, indicates Top Cover is open.

ALARM Red ON Paper end status i.e. no paper present.

OFF Printer is in normal state.

FLASHING When flashing together with the SEL indicator,

printing cannot be resumed at this stage. Turn the power OFF, verify that the carriage moves properly, then turn the power ON again.

If the problem is still there after you turn the power ON again, contact your dealer.

Indicates paper jam/media switch/incorrect paper lever setting status

When flashing together with TEAR indicator, indicates High temperature alarm status.

TEAR Green ON Menu mode.

OFF Tear down position.

FLASHING Tear up position.

ML5720/ML5721

PRINT QUALITY Green ON

> LED 3

> LED 2 > LED 2 and 3 > LED 1 > LED 1 and 3 > LED 1 and 2

Without ALARM indicator flashing:

> Indicates SSD is selected. > Indicates HSD is selected. > Indicates DRAFT is selected. > Indicates COURIER is selected. > Indicates GOTHIC is selected. > Indicates OCR-B is selected.

Operating instructions > 37

INDICATORS COLOUR STATUS MEANING

CHR.PITCH Green ON

LED 1

> LED 2 > LED 1 > LED 1 and 2

FLASHING

> LED 2

FLASHING

> LED 2 > LED 1 > LED 1 and 2

ML5790/ML5791

PRINT QUALITY Green ON

> LED 3

> LED 2 > LED 2 and LED 3 > LED 1 > LED 1 and LED 3 > LED 1 and LED 2 > LED 1, LED 2 and

LED 3

With TEAR indicator ON:

Printer is in MENU setting mode.

With Alarm indicator flashing:

> Indicates paper loading jam. > Indicates paper park/eject jam. > Indicates incorrect media setting.

Without Alarm indicator flashing:

> Indicates 10CPI is selected. > Indicates 12CPI is selected. > Indicates 15CPI is selected.

With Alarm indicator flashing:

> Indicates incorrect paper lever setting.

Without Alarm indicator flashing:

> Indicates 17CPI is selected. > Indicates 20CPI is selected. > Indicates PROP (Proportional) is selected.

Without ALARM indicator flashing:

> Indicates HSD is selected. > Indicates DRAFT is selected. > Indicates COURIER is selected. > Indicates ROMAN is selected. > Indicates SWISS is selected. > Indicates SWISS-B is selected. > Indicates ORATOR is selected.

FLASHING

> LED 3 > LED 2 > LED 2 and LED 3 > LED 1

CHR.PITCH Gr een ON

LED 1

FLASHING

> LED 2 > LED 1 > LED 1 and LED 2

FLASHING

> LED 2

PRINT SPEED Green ON

> LED 2 ON

> LED 1 ON > LED 1 and 2 ON

FLASHING

> LED 2 FLASHING > Indicates HIGH COPY is selected.

Without ALARM indicator flashing:

> Indicates GOTHIC is selected. > Indicates PRESTIGE is selected. > Indicates OCR-A is selected. > Indicates OCR-B is selected.

With TEAR indicator ON:

Printer is in the MENU setting mode.

Without ALARM indicator flashing:

> Indicates 17CPI is selected. > Indicates 20CPI is selected. > Indicates PROP (Proportional) is selected.

With ALARM indicator flashing:

> Indicates paper loading jam. > Indicates paper park/eject jam. > Indicates incorrect media setting.

With Alarm indicator flashing:

> Indicates incorrect paper lever setting.

With TEAR indicator OFF:

> Indicates NORM (Normal Speed) is selected. > Indicates HIGH SPEED is selected. > Indicates QUIET print is selected.

SLEEP Green FLASHING Low power consumption mode.

Operating instructions > 38

UTTON FUNCTIONS

The button functions described here are as in Print mode.

SWITCH STATUS FUNCTION

SEL On-line Sets the printer to off-line.

Off-line Sets the printer to on-line.

LF/FF On-line/Off-line Feeds paper by one line.

When pressed for more than 500ms, performs form feed.

LOAD/EJECT On-line/Off-line

When no paper is loaded

When paper is loaded:

Continuous forms

Cut-sheet paper

Pull feed

TEAR On-line/Off-line

Continuous forms

Pull feed

PRINT QUALITY On-line/Off-line Select a font.

Performs paper feed.

Retracts the form to the Pin Tractor.

Ejects the cut sheet.

Ineffective.

Delivers the continuous form to the cut position.

Ineffective.

CHR. PITCH On-line/Off-line Select a character pitch.

PRINT SPEED On-line/Off-line Select print speed.

SEL + LF/FF On-line/Off-line Ineffective.

SEL + LOAD/EJECT On-line Ineffective.

Off-line Holding down the SEL button and

SEL + CHR.PITCH On-line Ineffective.

Off-line Selects MENU configuration.

LF/FF + LOAD/EJECT On-line/Off-line Ineffective.

LOAD/EJECT + SEL On-line/Off-line

ML5720/ML5721 Performs microfeed (forward) 1/144 inch

ML5790/ML5791 Performs microfeed (forward) 1/180 inch

LOAD/EJECT + LF/FF On-line/Off-line

ML5720/ML5721 Performs microfeed (reverse) 1/144 inch

ML5790/ML5791 Performs microfeed (reverse) 1/180 inch

pressing the LOAD/EJECT button initialises the new Menu settings.

when paper is loaded.

TEAR + SEL On-line/Off-line

ML5720/ML5721 Performs microfeed (forward) 1/144 inch

ML5790/ML5791 Performs microfeed (forward) 1/180 inch

Operating instructions > 39

when paper is in tear off position.

SWITCH STATUS FUNCTION

TEAR + LF/FF On-line/Off-line

ML5720/ML5721 Performs microfeed (reverse) 1/144 inch

ML5790/ML5791 Performs microfeed (reverse) 1/180 inch

PRINT QUALITY + SEL On-line/Off-line

ML5720/ML5721 Performs microfeed (reverse) 1/144 inch

ML5790/ML5791 Performs microfeed (reverse) 1/180 inch

PRINT QUALITY + LF/FFOn-line/Off-line

ML5720/ML5721 Performs microfeed (forward) 1/144 inch

ML5790/ML5791 Performs microfeed (forward) 1/180 inch

when paper is in tear off position.

when paper is in Top of Form position.

CHR.PITCH + PRINT SPEED

ETTING MENU VALUES

On-line/Off-line Enters menu mode.

The following information explains the printer settings and how you can change them. Printer items and their values are printed for reference.

ONFIRMING CURRENT SETTINGS

To print the current menu settings, use a cut sheet of A4 paper or continuous forms of width at least 254 mm. In this example, two sheets of A4 paper is used.

1. Set the Paper Type lever to cut sheet mode.

2. To activate menu mode:

(a) Ensure that the printer is powered ON.

(b) Place the cut sheet on the front Paper Tray.

The cut sheet is gripped by the printer.

to enter menu mode, Menu print? is printed.

3. Press PRINT QUALITY (PRINT) button and the printer prints out all the menu items currently selected and their corresponding settings.

4. Exit or proceed to change menu settings:

(a) To exit menu settings confirmation, save the current settings, press CHR PITCH

and PRINT SPEED buttons together. Save menu is printed.

Press LOAD/EJECT button to eject the cut sheet paper.

(b) To change the menu settings, see “Menu setting” on page 41.

Operating instructions > 40

ENU SETTING

NOTE Before changing menu settings, you may wish to print the current menu settings as in “Confirming current settings” on page 40.

1. Ensure that the printer is turned ON.

2. Place the cut sheet on the Paper Tray, the paper is gripped by the printer.

3. Press and hold down the CHR PITCH button and then the PRINT SPEED button to

enter menu mode, Menu PRINT? is printed.

4. Press the LF/FF (GROUP) or LOAD/EJECT (ITEM) or TEAR (SET) button to print the first menu item.

5. To change a setting:

(a) Press LF/FF button to step forward and SEL + LF/FF to step backward to the

required group.

(b) When in the required Group, press LOAD/EJECT button to step forward and SEL

+ LOAD/EJECT to step backward to the required item.

to step backward to the required value.

Repeat these steps to change the settings for other items.

6. To exit menu settings confirmation, save the current settings, press CHR PITCH and PRINT SPEED buttons together.

Save menu is printed.

7. Press LOAD/EJECT button to eject the cut sheet paper.

NOTE

> A GROUP is the general classification of functions/features.

> An ITEM is the name of the function/feature.

> A SET is the value in an Item.

> Switching the printer OFF does not save the new settings.

Operating instructions > 41

ENU ITEMS AND SETTINGS

In the menu settings tables below, factory default settings are shown in bold.

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Printer Control

Font Print Mode Select quality of ANK

Emulation Mode Select emulation mode. IBM PPR, EPSON FX, MLEPSON LQ, IBM PPR,

characters.

Draft mode Select the draft mode. HSD

Pitch Select character pitch. 10 CPI

Proportional Spacing

Style Select either font style. Normal

Select whether to use proportional spacing or not.

Draft

NLQ Courier NLQ Gothic NLQ OCR-B HSD SSD

SSD

12 CPI 15 CPI

17.1 CPI 20 CPI

Yes No

Italics

IBM AGM

LQ Courier

LQ Roman LQ Swiss LQ Swiss Bold LQ Orator LQ Gothic LQ Prestige LQ OCR- A LQ OCR- B DRAFT HSD

Size Select the character

scale size. Selects both double width and double height character or single width and single height characters.

Single

Double

Operating instructions > 42

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Symbol Sets

Character Set Select character code

table.

Language Set Select a language

character set.

Set I

Set II

Standard (ML mode only) Line Graphics (ML mode only) Block Graphics (ML mode only)

ASCII

French German British Danish I Swedish I Italian Spanish I Japanese Norwegian Danish II Spanish II Latin American Dutch TRS80 Swedish II Swedish III Swedish IV Turk i s h Swiss I Swiss II Publisher

Set I

Set II

ASCII

French German British Danish I Swedish I Italian Spanish I Japanese Norwegian Danish II Spanish II Latin American Dutch Swedish II Swedish III Swedish IV Turk i s h Swiss I Swiss II Publisher

Zero Character Select either print font

pattern to receive a zero character located at 30H in ANK code.

Slashed

Unslashed

Slashed

Unslashed

Operating instructions > 43

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Symbol Sets cont.

Code Page Select a code page. USA

Canada French Multilingual Portugal Norway Turke y Greek_437 Greek_869 Greek_928 Greek_437 CYPRUS Polska Mazovia Serbo Croatic I Serbo Croatic II ECMA-94 Hungarian CWI Windows Greek Windows East Europe Windows Cyrillic East Europe Latin II 852 Cyrillic I-855 Cyrillic II-866 Kamenicky(MJK) ISO Latin 2 Hebrew NC (862) Hebrew OC Turkey_857 Latin 5 (Windows Turke y ) Windows Hebrew Ukrainian Bulgarian ISO Latin 6 (8859/

10) Windows Baltic Baltic_774 KBL-Lithuanian Cyrillic Latvia Roman-8 Icelandic-861 Multilingual 858 ISO 8859-15 Greek_737 POL1 Macedonian BRASCII Abicomp

USA

Canada French Multilingual Portugal Norway Turke y Greek_437 Greek_869 Greek_928 Greek_437 CYPRUS Polska Mazovia Serbo Croatic I Serbo Croatic II ECMA-94 Hungarian CWI Windows Greek Windows East Europe Windows Cyrillic East Europe Latin II 852 Cyrillic I-855 Cyrillic II-866 Kamenicky (MJK) ISO Latin 2 Hebrew NC (862) Hebrew OC Turkey_857 Latin 5 (Windows Turke y ) Windows Hebrew Ukrainian Bulgarian ISO Latin 6 (8859/

10) Windows Baltic Baltic_774 KBL-Lithuanian Cyrillic Latvia Roman-8 Icelandic-861 Multilingual 858 ISO 8859-15 Greek_737 Asmo 449+ Asmo 708 Arabic 864 Windows Arabic POL1 Macedonian BRASCII Abicomp

Slashed Letter 0 Set whether to convert

slashed 0 located at 9BH and 9DH in USA code page or not.

Operating instructions > 44

Yes

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Rear Feed (Push)

Line Spacing Select line feed pitch. 6 LPI

8LPI

Form Tear-Off When printer is idle (0.5,

1.0 or 2.0 sec), paper is advanced from the current print position to the tear position. When data is received, paper is moved to its original printing position.

Skip Over Perforation

Page Width (Displayed only for ML5721 and ML5791)

Page Length Select the length of a

Select whether to skip over perforation or not. (When a skip over perforation command is received, the received command is given priority.)

Change to 8” to print on narrow paper.

continuous form.

Manual

0.5 sec

1.0 sec

2.0 sec

25.4 mm (1”)

345.44 mm (13.6”)

203.2 mm (8”)

279.4 mm (11”)

296.3 mm (11 2/3”)

304.8 mm (12”)

355.6 mm (14”)

431.8 mm (17”)

76.2 mm (3”)

82.6 mm (3.25”)

84.7 mm (10/3”)

88.9 mm (3.5”)

93.1 mm (11/3”)

101.6 mm (4”)

127.0 mm (5”)

139.7 mm (5.5”)

152.4 mm (6”)

177.8 mm (7”)

203.2 mm (8”)

215.9 mm (8.5”)

Initial Position Select the vertical print

position when printer is turned on.

Cut Position Adjust Select an adjustment

value for the position to cut the end of a continuous form.

TOF Adjust Select an adjustment

value for the reference position in regard to the TOF position of a continuous form.

Operating instructions > 45

Print Position

Cut Position

-20 ~ -1

+1 ~ +20

-20 ~ -1

+1 ~ +20

-30 ~ -1

+1 ~ +30

-30 ~ -1

+1 ~ +30

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Rear Feed (Push) cont.

Front Feed (Push)

Continuous Paper Top o f Fo r m

LF Revise Adjust the line feed

Centering Position Select to limit printhead

Line Spacing Select line feed pitch. 6 LPI

Form Tear-Off When printer is idle (0.5,

Select an adjustment value for the reference position in regard to the Top of Form of a continuous form.

amount.

travel when printing narrow columns. Select Mode1 for ML5720 and ML5790.

Select Mode 1 or Mode 2 for ML5721.

1.0 or 2.0 sec), paper is advanced from the current print position to the tear position. When data is received, paper is moved to its original printing position.

2.12 mm (1/12”)

4.23 mm (2/12”)

6.35 mm (3/12”)

8.47 mm (4/12”)

10.58 mm (5/12”)

12.70 mm (6/12”)

14.82 mm (7/12”)

16.93 mm (8/12”)

19.05 mm (9/12”)

21.17 mm (10/12”)

23.28 mm (11/12”)

25.40 mm (12/12”)

27.52 mm (13/12”) User Top of Form

-2

-1

+1 +2

Default

Mode1 Mode2

8LPI

Manual

0.5 sec

1.0 sec

2.0 sec

Skip Over Perforation

Page Width (Displayed only for ML5721 and ML5791)

Select whether to skip over perforation or not. (When a skip over perforation command is received, the received command is given priority.)

Change to 8” to print on narrow paper.

Operating instructions > 46

25.4 mm (1”)

345.44 mm (13.6”)

203.2 mm (8”)

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Front Feed (Push) cont.

Page Length Select the length of a

continuous form.

Initial Position Select the vertical print

position when printer is turned on.

Cut Position Adjust Select an adjustment

value for the position to cut the end of a continuous form.

TOF Adjust Select an adjustment

value for the reference position in regard to the TOF position of a continuous form.

279.4 mm (11”)

296.3 mm (11 2/3”)

304.8 mm (12”)

355.6 mm (14”)

431.8 mm (17”)

76.2 mm (3”)

82.6 mm (3.25”)

84.7 mm (10/3”)

88.9 mm (3.5”)

93.1 mm (11/3”)

101.6 mm (4”)

127.0 mm (5”)

139.7 mm (5.5”)

152.4 mm (6”)

177.8 mm (7”)

203.2 mm (8”)

215.9 mm (8.5”)

Print Position

Cut Position

-20 ~ -1

+1 ~ +20

-20 ~ -1

+1 ~ +20

-30 ~ -1

+1 ~ +30

-30 ~ -1

+1 ~ +30

Continuous Paper Top o f Fo r m

LF Revise Adjust the line feed

Centering Position Select to limit printhead

Select an adjustment value for the reference position in regard to the Top of Form of a continuous form.

amount.

travel when printing narrow columns. Select Mode1 for ML5720 and ML5790.

Select Mode 1 or Mode 2 for ML5721 and ML5791.

2.12 mm (1/12”)

4.23 mm (2/12”)

6.35 mm (3/12”)

8.47 mm (4/12”)

10.58 mm (5/12”)

12.70 mm (6/12”)

14.82 mm (7/12”)

16.93 mm (8/12”)

19.05 mm (9/12”)

21.17 mm (10/12”)

23.28 mm (11/12”)

25.40 mm (12/12”)

27.52 mm (13/12”) User Top of Form

-2

-1

+1 +2

Default

Mode 1 Mode 2

Operating instructions > 47

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Pull Line Spacing Select line feed pitch. 6 LPI

8 LPI

Skip Over Perforation

Page width (Displayed only for ML5721/ML5791)

Page Length Select the length of a

Select whether to skip over perforation or not. (When a skip over perforation command is received, the received command is given priority.)

Change to 8” to print on narrow paper.

continuous form.

25.4 mm (1”)

345.44 mm (13.6”)

203.2 mm (8”)

279.4 mm (11”)

296.3 mm (11 2/3”)

304.8 mm (12”)

355.6 mm (14”)

431.8 mm (17”)

76.2 mm (3”)

82.6 mm (3.25”)

84.7 mm (10/3”)

88.9 mm (3.5”)

93.1 mm (11/3”)

101.6 mm (4”)

127.0 mm (5”)

139.7 mm (5.5”)

152.4 mm (6”)

177.8 mm (7”)

203.2 mm (8”)

215.9 mm (8.5”)

Cut Sheet Top

LF Revise Adjust the line feed

amount.

Centering Position Select to limit printhead

Line Spacing Select line feed pitch. 6 LPI

Form Tear-Off (Displayed when connected to the RPS)

Page width (Displayed only for ML5721/ML5791)

travel when printing narrow columns. Select Mode1 for ML5720/ML5790.

Select Mode 1 or Mode 2 for ML5721/ML5791.

When printer is idle (0.5,

1.0 or 2.0 sec), paper is advanced from the current print position to the tear position. When data is received, paper is moved to its original printing position.

Change to 8” to print on narrow paper.

-2

-1

+1 +2

Default

Mode 1 Mode 2

8 LPI

Manual

0.5 sec

1.0 sec

2.0 sec

345.44 mm (13.6”)

203.2 mm (8”)

-14 ~ -1

+1 ~ +14

Operating instructions > 48

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Cut Sheet Top c on t.

Page Length Select the page length of

cut sheet.

Initial Position (Displayed when connected to the RPS)(ML5720/ ML5790)

Cut Position Adjust (Displayed when connected to the RPS)(ML5720/ ML5790)

Select the vertical print position when printer is turned on.

Select an adjustment value for the position to cut the end of a continuous form.

279.4 mm (11” in)

296.3 mm (11 2/3”)

304.8 mm (12”)

420.9 mm (16.57”)

355.6 mm (14”)

76.2 mm (3”)

82.6 mm (3.25”)

84.7 mm (10/3”)

88.9 mm (3.5”)

93.1 mm (11/3”)

101.6 mm (4”)

127.0 mm (5”)

139.7 mm (5.5”)

152.4 mm (6”)

177.8 mm (7”)

203.2 mm (8”)

215.9 mm (8.5”)

Print Position

Cut Position

-20 ~ -1 0 +1 ~ +20

-30 ~ -1 0 +1 ~ +30

Wait Time Select the waiting time

between setting paper on the tray and feeding it while the printer is waiting for paper to be fed in cut sheet manual feed mode.

Paper Length Control

Cut Sheet Auto Eject Position

TOF Adjust Select an adjustment

Control the page length of cut sheet.

Select a printable area at the bottom of cut sheets of paper in cutpaper mode (the character center position.)

value for the reference position in regard to the TOF position of cut sheet paper.

The position moves to the rear of the form by (+) and to the top of the form by (-) in /1/144” (ML5720/ML5721) and 1/180” (ML5790/ ML5791) increments.

Invalid

0.5 sec

1.0 sec

1.5 sec

2.0 sec

3.0 sec

by MENU setting

by Actual Page Length

6.35 mm (3/12”)

12.70 mm (6/12”)

14.82 mm (7/12”) Invalid

-20 ~ -1 0 +1 ~ +20

by MENU setting

by Actual Page Length

-30 ~ -1 0 +1 ~ +30

Operating instructions > 49

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Cut Sheet Top c on t.

Cut Sheet Front

Cut Sheet Top of Form

LF Revise Adjust a line feed in the

Centering Position Select to limit printhead

Line Spacing Select line feed pitch. 6 LPI

Select the reference position for the TOF position when feeding cut sheet. (Up to the mid-section of characters in the first line.)

cut sheet mode.

travel when printing narrow columns. Select Mode1 for ML5720.

Select Mode 1 or Mode 2 for ML5721.

2.12 mm (1/12”)

4.23 mm (2/12”)

6.35 mm (3/12”)

8.47 mm (4/12”)

10.58 mm (5/12”)

12.70 mm (6/12”)

14.82 mm (7/12”)

16.93 mm (8/12”)

19.05 mm (9/12”)

21.17 mm (10/12”)

23.28 mm (11/12”)

25.40 mm (12/12”)

27.52 mm (13/12”) User Top of Form

-14 ~ -1

+1 ~ +14

Default

Mode 1 Mode 2

8 LPI

Page width (Displayed only for ML5721/ML5791)

Page Length Select the length of cut

Wait Time Select the waiting time

Change to 8” to print on narrow paper.

sheet.

between setting paper on the tray and feeding it while the printer is waiting for paper to be fed in cut sheet manual feed mode.

345.44 mm (13.6”)

203.2 mm (8”)

279.4 mm (11”)

296.3 mm (11 2/3”)

304.8 mm (12”)

355.6 mm (14”)

420.9 mm (16.57”)

76.2 mm (3”)

82.6 mm (3.25”)

84.7 mm (10/3”)

88.9 mm (3.5”)

93.1 mm (11/3”)

101.6 mm (4”)

127.0 mm (5”)

139.7 mm (5.5”)

152.4 mm (6”)

177.8 mm (7”)

203.2 mm (8”)

215.9 mm (8.5”)

Invalid

0.5 sec

1.0 sec

1.5 sec

2.0 sec

3.0 sec

Paper Length Control

Control the page length of cut sheet.

Operating instructions > 50

by MENU setting

by Actual Page Length

by MENU setting

by Actual Page Length

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Cut Sheet Front cont.

Cut Sheet Auto Eject Position

TOF Adjust Select an adjustment

Cut Sheet Top of Form

Select a printable area at the bottom of cut sheet paper in cut sheet mode (the character centre position).

value for the reference position in regard to the TOF position of cut sheet paper.

The position moves to the rear of the form by (+) and to the top of the form by (-) in 1/144” (ML5720/21) and 1/180” (ML5790/91) increments.

Select the reference position for the TOF position when feeding cut sheet. (Up to the mid-section of characters in the first line.)

6.35 mm (3/12”)

12.70 mm (6/12”)

14.82 mm (7/12”) Invalid

-20 ~ -1 0 +1 ~ +20

2.12 mm (1/12”)

4.23 mm (2/12”)

6.35 mm (3/12”)

8.47 mm (4/12”)

10.58 mm (5/12”)

12.70 mm (6/12”)

14.82 mm (7/12”)

16.93 mm (8/12”)

19.05 mm (9/12”)

21.17 mm (10/12”)

23.28 mm (11/12”)

25.40 mm (12/12”)

27.52 mm (13/12”) User Top of Form

-30 ~ -1 0 +1 ~ +30

LF Revise Adjust a line feed

amount in the cut sheet mode.

Centering Position Select to limit printhead

travel when printing narrow columns. Select Mode1 for ML5720/ML5790.

Select Mode 1 or Mode 2 for ML5721/ML5791.

Set-up Graphics Select the printing

direction when doubleheight print data exists in a line.

7 or 8 Bits Graphics (Displayed only for ML Emulation)

Receive Buffer Size

Select to change graphics settings.

Select size of the received buffer.

When “1 Line” is selected, the receive buffer size is set to 2 k bytes.

-14 ~ -1

+1 ~ +14

Default

Mode 1 Mode 2

Uni-directional

Bi-directional

0 K 1 Line 32 K 64 K

128 K

Operating instructions > 51

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Set-up cont.

Paper End Detection

Print Registration 1Adjust the print starting

Print Registration 2Adjust the print starting

Print Registration 3Adjust the print starting

Print Registration 4Adjust the print starting

Select whether to detect paper end or not. Change to OFF to override the sensor and print closer to the bottom of the page.

position on printing in the reverse direction. (The position moves to the right or left in 1/720 in increments.)

On Off

-10 ~ -1

+10 ~ +1

-10 ~ -1

+10 ~ +1

-10 ~ -1

+10 ~ +1

-10 ~ -1

+10 ~ +1

7 or 8 Bits Data Word

Operator Panel Function

Reset Inhibit Changing this to Yes

Print Suppress Effective

Auto LF Select whether to

Auto CR (Displayed only for IBM emulation)

Select data word lengths.

Select full or limited operation.

prevents a reset signal from the computer from resetting the printer to its defaults.

Select whether to enable or disable a print suppress setup command.

perform auto LF operation or not upon receiving a CR code. If your print out is consistently double spaced, select No, if it overprints, select Yes.

Select Yes to add a carriage return when a Line Feed is received at the end of a line.

Full Operation

Limited Operation

Yes

Operating instructions > 52

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Set-up cont.

Print DEL Code (Displayed only for ML Emulation)

SI Select Pitch (10 CPI) (Displayed only for IBM emulation)

SI Select Pitch (12 CPI) (Displayed only for IBM emulation)

Time Out Print Select valid or invalid. Invalid

Auto Select Determines whether or

Host Interface Selects which interface

Change the setting to Yes to print the DEL code (decimal 27) as a solid box.

Select how to handle an SI command received in 10 CPI mode.

Select how to handle an SI command received in 12 CPI mode.

not the printer will automatically be selected after you load in paper. Select No if you want to set the Top of Form position.

the printer uses to receive printing commands.

Yes

17.1 CPI

15 CPI

12 CPI

20 CPI

Valid

Yes

Auto Interface

Parallel USB Optional

I/F Time Out Sets the length of time

before the interface switches to idle status when no printing commands have been received.

ESC SI Pitch (Displayed only for IBM emulation)

Select Language Set

Print Style Select the printer impact

Select Quiet Mode Select Quiet print mode. Mode 1

Select High Copy Mode

Sets the character pitch used when the ESC SI command is received.

Changing the language set replaces certain standard symbols with special characters used in foreign languages.

mode.

Select High Copy print mode.

15 sec

30 sec 45 sec 1 min 2 min 3 min 4 min 5 min

17.1 CPI

20 CPI

Combined

Code Page Only

Normal

High Speed Quiet High Copy

Mode 2

Mode 1

Mode 2 Mode 3 Mode 4

Reverse Feed Control

Set reverse feed control. TOF Stop

TOF Over

Operating instructions > 53

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Set-up cont.

Print Direction at DH Mode

Sleep Mode Set whether to enable or

Sleep Time Set idle time to enter

Pin Control Select whether to have

Pin Control Select Select the method to

Paper End Select when to detect

FF Function Set feeding operation

Cut Sheet Park Function

Select the print direction at the double height printed.

disable sleep mode.

sleep mode.

or not have print control during line printing.

print lines when Special is selected in Pin Control menu.

Paper End.

upon receiving an FF code after cut paper is fed.

Select Valid to enable paper feed out of the cut sheet.

Uni-directional

Bi-directional

Enable

Disable

5 min

10 min 15 min 30 min 60 min

- Standard Special

- Mode1 Mode2

On-line

Off-line

Eject

Form Feed

Invalid

Valid

Parallel I/F

Serial I/F (Displayed when connected to Serial Interface)

Feed Up when Menu Printing

I-prime Select whether to print

Auto Feed XT (Displayed only for EPSON emulation)

Bi-direction Set whether to return a

Parity None: Absence of parity

Serial Data 7/8 Bits

Protocol Select an I/F Busy

Select Yes to move the paper to the top cover to see the MENU printing.

or clear buffer contents upon initialisation by receiving I-PRIME.

Select the validity of an Auto Feed XT signal.

device ID or not in accordance with IEEE1284.

bit Odd: Odd parity Even: Even parity Ignore: Do not convert the character to ox40 in case of parity error.

Select Serial bit. 8 bit

control method.

Yes

Invalid

Buffer Print

Buffer Clear

Valid

Invalid

Enable

Disable

None

Odd Even Ignore

7 bit

Ready/Busy X-On/X-OFF

Ready/Busy & X-ON/X-OFF

Operating instructions > 54

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Serial I/F cont. (Displayed when connected to Serial Interface)

Diagnostic Test Select to perform input/

output diagnosis of RS-232C interface signals.

Busy Line Select to set the Busy

Line.

Baud Rate Select to set the Baud

Rate.

DSR Signal Select the DSR Signal. Valid

DTR Signal Select a method to

switch a DTR signal of a serial interface.

Busy Time Select the minimum

time between BUSY to READY.

Stop Bit Select the stop bit. 1 bit

Yes

SSDSSD+

DTR

RTS

9,600 bps

4,800 bps 2,400 bps 1,200 bps 600 bps 300 bps 19,200 bps

Invalid

Ready on Power Up

Ready on Select

0.2 sec

1.0 sec

2 bit

CSF Bin 1

(Displayed when Single-bin Cut-sheet feeder is installed)

Receive error Select the receive error. Checked

Unchecked

Line spacing Select line feed pitch 6 LPI

8 LPI

Page Width (Displayed only for ML5721/ML5791)

Page Length Select the length of cut

Cut Sheet Auto Eject Position

Change to 8 inch to print on letter size paper.

sheet.

Select a printable area at the bottom of cut sheet paper in cut sheet mode (the character centre position).

203.2 mm (8”)

345.44 mm (13.6”)

279.4 mm (11”)

296.3 mm (11 2/3”)

304.8 mm (12”)

355.6 mm (14”)

420.9 mm (16.57”)

76.2 mm (3”)

82.6 mm (3.25”)

84.7 mm (10/3”)

88.9 mm (3.5”)

93.1 mm (11/3”)

101.6 mm (4”)

127.0 mm (5”)

139.7 mm (5.5”)

152.4 mm (6”)

177.8 mm (7”)

203.2 mm (8”)

215.9 mm (8.5”)

6.35 mm (3/12 in)

12.7 mm (6/12 in)

14.82 mm (7/12 in)

Operating instructions > 55

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

CSF Bin 1 cont.

(Displayed when Single-bin Cut-sheet feeder is installed)

TOF Adjust Select an adjustment

value for the reference position in regard to the TOF position of cut sheet paper.

The position moves to the rear of the form by (+) and to the top of the form by (-) in 1/60 in increments.

Cut Sheet Top Of Form

LF Revise Adjust a line feed

Select the reference position for the TOF position when feeding cut sheet. (Up to the mid-section of characters in the first line.)

amount in the cut sheet mode.

-20 ~ -1

+1 ~ +20

2.12 mm (1/12”)

4.23 mm (2/12”)

6.35 mm (3/12”)

8.47 mm (4/12”)

10.58 mm (5/12”)

12.70 mm (6/12”)

14.82 mm (7/12”)

16.93 mm (8/12”)

19.05 mm (9/12”)

21.17 mm (10/12”)

23.28 mm (11/12”)

25.40 mm (12/12”)

27.52 mm (13/12”)

User Top of Form

-14 ~ -1

+1 ~ +14

Centering Position Select to limit printhead

Extension Detect Sprocket

Hole

Right Margin(Fanfold)

Right Margin (Cut Sheet)

travel when printing narrow columns. Select Mode1 for ML5720.

Select Mode 1 or Mode 2 for ML5721.

Select Enable when loading continuous form to detect sprocket hole, and avoid printing on the hole.

Select to set the blank space (width) on the right side of the continuous form.

Select to set the blank space (width) on the right side of the cutsheet paper.

Default

Mode 1 Mode 2

Enable

Disable

Right Margin Over 1 mm 3 mm

5.08 mm

10 mm

13 mm 15 mm 20 mm 25 mm

Right Margin

1 mm

2 mm 3 mm 4 mm 5 mm 6 mm

Operating instructions > 56

NITIALISING MENU SETTINGS

To restore the menu settings to their initial values, carry out the steps below.

NOTE The values adjusted by the Adjustment menus are not initialised by the following procedure.

1. Set the Power Switch to OFF.

2. Press and hold down the SEL and LF/FF buttons together and then set the Power

Switch to ON.

The SEL LED will flash.

3. Press and hold down the TEAR button and then press the SEL button again.

DJUSTING

Use the following procedure to set TOF to accord with the reference position (6.35 mm (0.25 in)). The reference position refers to the first line of the paper i.e. the position to which the printer feeds the paper when automatically loading the paper.

1. Print out the menu settings of the printer as in “Confirming current settings” on

page 40 and confirm that the TOF (in cut sheet mode or continuous forms mode) is

23.28 mm (11/12 in).

TOF

NOTE Adjusting of TOF can be done in cut sheet mode or continuous forms mode.

POSITION

2. Remove the cut sheet paper by pressing LOAD/EJECT button or retract the

continuous form as described in “Removing continuous forms” on page 27.

3. Set the Paper Type lever to the required paper type.

4. Place the cut sheet paper on the Paper Tray (front or top) and adjust the paper

guides to suit the paper width.

When continuous forms are used, place the paper on the Pin Tractor.

5. To load the cut sheet paper, insert the cut sheet in the Top of Form position, and the paper is automatically loaded.

To load the continuous form, press LOAD/EJECT button.

NOTE TOF default is set at 23.28 mm (11/12 in).

6. Align the paper with the first print line position as follows:

ML5720/ML5721:

> To feed the paper forward by a small amount (1/144 in), press the LOAD/EJECT

and SEL buttons together.

> To feed the paper backward by a small amount (1/144 in), press the LOAD/EJECT

and LF/FF buttons together.

ML5790/ML5791:

> To feed the paper forward by a small amount (1/180 in), press the LOAD/EJECT

and SEL buttons together.

Operating instructions > 57

> To feed the paper backward by a small amount (1/180 in), press the LOAD/EJECT

and LF/FF buttons together.

NOTE

> Press the TEAR button to move the continuous form down before

adjusting the TOF.

> For ML5720/ML5721: the specified correction range is

> For ML5790/ML5791: the specified correction range is

± 20/144 in

± 30/180 in.

7. When the paper is positioned at the required TOF, release the buttons in Step 6 above. To save this position as the TOF, press and hold the SEL button and then press the LF/FF button.

Operating instructions > 58

ROUBLESHOOTING

LEARING PAPER JAMS

CUT

SHEET PAPER JAMMED IN PRINTER

Do not carry out any operations inside the printer with the Power Switch set to ON.

1. Set the Power Switch to OFF.

2. Open the Top Cover.

WARNING!

3. Set the Paper Thickness lever to position 10.

WARNING!

The Print Head may be hot after printing. Allow it to cool before touching it.

4. Remove the ribbon cartridge. See “Changing a ribbon cartridge” on page 68.

5. Move the print head away from the paper.

Troubleshooting > 59

6. Rotate the platen knob in the relevant direction and pull the cut sheet out from the top of the printer.

7. If a paper fragment remains inside the printer:

(a) use tweezers to grip and extract it or

(b) insert a triple folded sheet from the Paper Tray and turn the platen knob to pass

the folded sheet through and push out the paper fragment.

8. When the paper jams are cleared, replace the ribbon cartridge, reset the paper thickness lever and close the printer top cover.

9. Set the Power Switch to ON.

NOTE Use the above procedure to clear paper jam when using cut-sheet front feed.

ONTINUOUS FORMS JAMMED IN PRINTER

WARNING!

Do not carry out any operations inside the printer with the Power Switch set to ON.

1. Set the Power Switch to OFF.

2. Open the Top Cover.

3. Tear off any unprinted continuous forms.

Troubleshooting > 60

4. Remove the top Paper Tray by holding the tray by the tabs on both sides and pulling it up from the printer.

5. Raise each Pin Tractor cover and remove the continuous forms from the Pin Trac t ors .

6. Rotate the platen knob and remove the forms from the front of the printer.

7. If a form fragment remains inside the printer, place two or three forms in a stack on

the Pin Tractors and turn the platen knob to push the fragment out of the printer.

8. When the paper jams are cleared, lower the top Paper Tray and slide it towards the front of the printer until the marks align.

9. Close the Top Cover.

Troubleshooting > 61

10. Set the Power Switch to ON.

NOTE Use the above procedure to clear paper jam when using continuous formfront push.

ESPONDING TO ALARM CONDITIONS

Use the following table for guidance on how to respond to indicated alarm conditions.

INDICATOR ALARM MEANINGS AND ACTIONS

SEL ALARM

OFF ON Paper has run out. Add paper and press the SEL button.

OFF Flashing The Paper Type lever is wrongly set for the type of paper in

OFF Flashing Problem with cut sheet feeding. Remove the cut sheet.

Flashing ON Print data is received but printing does not start because no

Flashing Flashing Printing cannot be resumed at this stage. Turn the power OFF,

ESPONDING TO GENERAL PROBLEMS

use. Press the SEL button and set the Paper Type lever to the correct position.

paper is being fed. Insert paper.

verify that the carriage moves properly, then turn the power ON again.

If the problem is still there after you turn the power ON again, contact your dealer.

Use the following table to help you to identify symptoms with possible causes and take suggested remedial actions.

PROBLEM CAUSE ACTION

No power

No power The power cable is not

properly connected.

Check the power cable is properly connected at both power outlet and printer.

Power outlet problem or power outage.

No printing takes place

SEL indicator is unlit. The printer driver is not

installed properly.

The printer has just stopped printing.

There is no paper in the printer.

SEL indicator is illuminated but no printing takes place.

The print head is moving but no printing takes place.

Interface cable is disconnected.

Wrong interface cable has been used.

The ribbon cartridge has not been installed.

Troubleshooting > 62

Plug another appliance into this outlet to check if it works.

Re-install the printer driver correctly.

Press the SEL button.

Load paper.

Reconnect the interface cable.

Use correct interface cable.

Install the ribbon cartridge.

PROBLEM CAUSE ACTION

Print position offset

The horizontal printing position is offset.

Printing slows down

Print direction changes suddenly to unidirectional.

PE warning

The print carriage does not operate.

Print blurring

The characters are too pale to display properly on the paper.

The start position may change after the printer is powered on.

When the print head overheats, the printer automatically starts unidirectional split printing.

There is contamination on the carriage shaft.

The Paper Thickness lever position does not match the paper.

The printer is set to print at high speed.

When the printer is powered ON, switch from off-line mode to on-line mode by pressing the SEL button. Reset the start position. You must set the Power Switch to OFF before you change the start position.

When the print head temperature drops sufficiently, the printer will return to its original operation.

Clean any paper dust and contamination from the carriage with a dry cloth.

Correct the Paper Thickness lever setting.

Set the speed to normal.

The ribbon has reached its end of life.

The ribbon cartridge is not installed correctly.

The ribbon has been wound incorrectly.

The ribbon is not transferring properly.

A line of print is missing. Broken wire pins. Contact your dealer.

The printout differs from the screen display.

Printout of completely different characters or symbols.

Incorrect print setup for the user application.

The application control codes for the previous print operation are still enabled.

The input application control signal is not correct.

The interface cable is not properly connected.

Replace the ribbon by a new one.

Reinstall the ribbon cartridge correctly.

Replace the ribbon cartridge by a new one.

Reselect print setup for the applications according to priority.

Initialise the printer.

Print in hex dump mode and verify the data content. Make corrections in the application.

Reconnect the cable correctly.

Troubleshooting > 63

PROBLEM CAUSE ACTION

Too high or too low TOF (where printing starts).

Too large or small left and/or right margins.

When continuous forms are used, the content of a single form is printed on two forms.

When cut sheets are used, the content of a single sheet is printed on two sheets.

The TOF is not correctly selected.

The left or right margin is not correctly selected.

The paper length selected in the application does not match the physical paper length.

The paper setting selected in the application does not match the physical paper size.

Initialise the printer.

Select correct TOF for cut sheet and continuous forms.

Select the first-line print position and adjust the paper top position.

Reselect the margin correctly in the application.

Incorrect positions of the Paper Guide or Pin Tractors. Select and adjust the position again depending on the paper type.

Reselect the left and right margins correctly in the application.

Match the paper length selected in the application with the physical paper length in use.

Match the paper setting selected in the application with the physical paper in use.

The content of a single line is printed in two lines.

When continuous forms are used, several blank lines appear in the printout.

Broken and uneven vertical lines.

Too large or small line spacing.

Split print

Blanks appear in graphic printout.

Blanks or deformed characters appear in double height type or other extended types.

It does not match the lines per page as the printer automatically detected.

The left and/or right margins are not correctly selected.

Tear-off perforation spacing is selected.

This may happen in bidirectional printing.

Line spacing is not selected correctly.

This is a paper feed error, which is especially notable in printing regular characters.

This is a paper feed error due to line feeding in printing a single character.

Leave enough top and bottom margin in the application.

Correct the cut sheet LF adjustment.

Reselect the left and right margins correctly in the application.

Cancel tear-off perforation spacing.

Use Print Registration in the adjustment mode to adjust.

Reselect line spacing correctly in the application.

This is not a failure.

Use the printer's built-in fonts when you print important documents or bills.

Troubleshooting > 64

PROBLEM CAUSE ACTION

Improper cut sheet feed

No paper feed.

Continuous forms instead of cut sheets are fed.

Paper distortion.

Unable to eject.

Improper continuous forms feed.

No line feed, and no paper feed.

Paper distortion or jam. Forms are loaded with their

Sheets are located off the paper guide.

Sheets are not loaded to the end.

The printer is in the continuous forms mode.

Sheets are not loaded to the end, or they are not inserted straight.

Paper with wrinkles, folds or other defects.

Paper not specified for the printer.

The LF/FF

Paper is off the Pin Tractors. Reload paper correctly.

The adjust lever position does not match the paper type.

left holes out of line with the right ones.

button is pressed.

Load sheets with their left edges against the paper guide.

Load sheets to the end.

Eject the continuous forms and select cut sheet mode for the printer.

Load sheets to the end.

Change paper.

Use paper types specified for the printer.

Press the LOAD/EJECT button.

Set the adjust lever to the correct position.

Load forms with their left holes in line with the right ones.

Inadequate distance between the left and right Pin Tractors, making for loose paper.

Skew paper feeding. Move the paper to make it

Paper movement is blocked. Remove the blockage.

Paper source is too far from the printer.

Paper not specified for the printer.

Several blank lines appear in the printout.

The selected skip over perforation spacing does not match the physical tear-off perforation positions.

Abnormal switchover between cut sheet and continuous forms modes.

No cut sheet feed. The printer is in continuous

Skip over perforation spacing is selected.

The paper length selected in the application does not match the physical paper length.

forms mode.

Relocate the Pin Tractors to tighten the paper.

straight.

Move the paper source nearer to the printer.

Use paper types specified for this printer.

Cancel the skip over perforation spacing.

Match the paper length selected in the application with the physical paper length in use. Select the paper length in number of lines in the application.

Set the Paper Type lever to cut sheet mode.

No continuous forms feed. The printer is in cut sheet

mode.

Troubleshooting > 65

Set the Paper Type lever to continuous forms mode.

PROBLEM CAUSE ACTION

Paper feed operations for both cut sheets and continuous forms are actuated.

The cut sheet is not ejected. Eject the cut sheet.

Troubleshooting > 66

LEANING YOUR PRINTER

To keep your printer in good operating condition, you are advised to clean it regularly.

WARNING!

Set the printer Power Switch to OFF and disconnect the power cable from the printer before cleaning the printer.

RINTER EXTERIOR

CAUTION!

Keep the Top Cover closed to avoid the possibility of detergent entering the printer

Clean the exterior of the printer as required, but at least every six months or 300 hours of operation, whichever comes first.

> Moisten a piece of cotton cloth with diluted neutral detergent and carefully wipe the

printer exterior.

RINTER INTERIOR

WARNING!

As the print head becomes hot during printing, allow it to cool before carrying out any cleaning inside the printer. Do not use any flammable solvents for cleaning the printer to avoid any risk of fire or electric shock.

Clean the interior of the printer every 6 months or 300 hours of operation, whichever comes first.

Using a soft cloth, cotton swabs and a vacuum cleaner, clean the interior of the printer as follows:

WHERE TO CLEAN WHAT TO CLEAN

The carriage and the area around it Clean and remove paper

The paper travel surface

waste, dirt, dust and ribbon shreds.

CAUTION!

When you clean the interior of the printer with a vacuum cleaner, do not attempt to clean any parts smaller than the suction nozzle.

Do not clean any interior working parts with the suction nozzle to avoid possible damage to the printer.

Cleaning your printer > 67

ONSUMABLES AND ACCESSORIES

ONSUMABLES

When the printed image becomes faint or incomplete, replace the ribbon cartridge.

HANGING A RIBBON CARTRIDGE

CAUTION!

Only use genuine Original consumables to ensure the best quality and performance from your hardware. Non Original products may damage your printer’s performance and invalidate your warranty.

WARNING!

Do not change the ribbon cartridge with the Power Switch set to ON.

1. Set the Power Switch to OFF.

2. Open the Top Cover and set the paper Thickness lever to position 10.

WARNING!

The print head and area around it may be hot after printing. Allow it to cool down before touching it.

3. Move the carriage to the center (2) for ribbon replacement position.

Consumables and accessories > 68

4. Holding the sides of the ribbon guide, slope it up and out to remove it from the carriage.

5. Holding the ribbon cartridge close to both ends, slope it up and out until it unlocks then remove it along the direction indicated by the arrows.

6. Dispose of the cartridge in accordance with your local guidelines.

Consumables and accessories > 69

7. Remove the new ribbon cartridge from its wrapping and note the position of the Ribbon Guide (1), Knob (2) and Pin (3).

8. In the direction indicated by the arrows, insert the pins at both ends of the ribbon cartridge (1) into the U grooves (2) in the printer until the ribbon cartridge is fully locked.

NOTE It may be easier to mount the ribbon cartridge in place if you align it with the topside of the grooves. Also, a slightly loose ribbon may make it easier to mount the ribbon cartridge.

Consumables and accessories > 70

9. Holding the sides of the ribbon guide slope it downward until the ribbon guide comes in line with the slot of the print head.

NOTE Ensure that the guide is pushed to the end of the print head.

10. Move the print head horizontally to ensure that the ribbon is properly installed.

11. Turn the knob (1) clockwise (in the direction of the arrow) to wind up the ribbon.

CAUTION!

> Do not turn the knob anticlockwise as the ribbon might jam. > Make sure that the ribbon is not twisted or damaged when it goes

through the gap between the Print Head and the ribbon guide.

Consumables and accessories > 71

12. Set the Paper Thickness lever to match the paper being used. (See “Setting the

Paper Thickness lever” on page 33.)

13. Close the Top Cover.

14. Set the printer Power Switch to ON.

ONSUMABLE ORDER INFORMATION

ITEM MODEL LIFE ORDER NO.

Ribbon cartridge (Black) ML5720/ML5790 8 million characters 44173405

ML5721/ML5791 13 million characters 44173406

Consumables and accessories > 72

NSTALLING

NSTALLING THE CUT-SHEET FEEDER

PTIONS

To install the optional cut-sheet feeder (CSF) carry out for the following:

1. Ensure that the printer is turned OFF.

2. Ensure that the Paper Type Lever is set to Cut-Sheet.

RPS

REAR

FRONT

PULL

3. Open the top access cover, adjust the Paper Thickness Lever to suit the paper. See

“Setting the Paper Thickness lever” on page 33.

4. Remove the top tray by holding the tabs (1) on both sides and pulling it up away from the printer.

Installing Options > 73

5. Remove the Pull-up Guide assembly (1) by disengaging the latches (2) on both sides, pulling it forwards (3) and then pulling it up (4).

6. Guide the edge of Cut-sheet feeder on both sides onto the platen and then press down to lock it in place.

7. Plug in the CSF connector into the CSF port in the rear of printer.

Installing Options > 74

8. Set the printer Power switch to ON.

NOTE The Guide Assembly packed with CSF cannot be used on ML5720/ML5721.

NSTALLING THE ROLL PAPER STAND

(ML5720/ML5790)

To install the optional Roll Paper Stand (RPS), carry out the following:

1. Ensure that the printer is turned OFF.

2. Ensure that the Paper Type Lever is set to RPS.

RPS

3. Remove the Pull-up Guide assembly support.

REAR

FRONT

PULL

Installing Options > 75

4. Remove the top tray by holding the tray by the tabs on both sides and pulling it up from the printer.

5. Install the separator (1). Insert the RPS (2) into the separators insertion slots (3) and push it backward (4).

6. Plug in the RPS connector into the port in the rear of the printer.

Installing Options > 76

NSTALLING THE NETWORK AND SERIAL INTERFACE CARD

To install any of the above options, follow the detailed installation sheet that accompanies the option.

PTION ORDER NUMBERS

OPTION MODEL ORDER NUMBER

Pull Tractor ML5720/ML5790 44753902

ML5721/ML5791 44754002

Cut-sheet Feeder Single Bin ML5720/ML5790 44497402

ML5721/ML5791 44497502

Roll Paper Stand ML5720/ML5790 YA4053-1057G015

Tractor Unit ML5720/ML5790 44454902

ML5721/ML5791 44455002

RS-232C Serial Interface ML5720/ML5721

ML5790/ML5791

LAN7120E3 100BASE-TX/ 10BASE-T Network Interface

ML5720/ML5721

ML5790/ML5791

44455102

44455302

Installing Options > 77

PECIFICATIONS

ITEM SPECIFICATION

Print method Impact dot matrix

Print head

ML5720/ML5721

ML5790/ML5791

Dimensions

ML5720/ML5790

ML5721/ML5791

Weight

ML5720/ML5790

ML5721/ML5791

MODEL MODEL NUMBER

ML5720 D22540B

ML5721 D22550B

ML5790 D22560B

ML5791 D22570B

18 pin, 0.3mm (0.012 in) diameter

24 pin, 0.2mm (0.0079 in) diameter

438mm(W) x 375mm(D) x 191mm(H)

592mm(W) x 375mm(D) x 191mm(H)

(with platen knob, pull-up guide assembly support and paper separator)

7.5 kg

10 kg

Power rating

Voltage Frequency

Power consumption (without options attached)

Operation ML5720/ML5721 ML5790/ML5791 Standby mode Powersave mode

Environmental conditions

Operating

Storage

Noise level The acoustic noise of this product is less than 57dB (A)

220 – 240V ± 10% 50/60 Hz ± 2%

Typ. 59W (ISO/IEC10561/Letter/Draft Range 1) Typ. 88W (ISO/IEC10561/Letter/Draft Range 1) 15 W

2.0W

5°C – 35°C, 20% - 80% RH (Testing condition for print precision: 15°C – 30°C, 40% – 70%RH)

10°C - 50°C, 5% – 95% RH

When the printer is stored, it should be in its original packaging, with no moisture formation.

(ML5720/ML5721) and 57dB (A) (ML5790/ML5791) as measured in accordance with EN ISO 7779.

Specifications > 78

NDEX

alarm indications................... 62

aligning perforations ............. 26

changing paper paths

continuous forms to cut

sheet

.............................. 30

cut sheet to continuous

forms

cleaning

exterior

interior .............................. 67

continuous forms

front feed

rear feed........................... 19

controlling the printer using

DIPUS

.............................. 30

............................. 67

.......................... 22

................................. 17

DIPUS

button setup utility

menu setup utility ............ 17

status monitor .................. 17

TOF setup utility ............... 17

dismounting

front pin tractor

rear pin tractor ................. 21

drivers................................... 16

........... 17

................ 25

ejecting paper

continuous forms

cut sheet........................... 30

emulations ............................ 16

.............. 26

fault finding........................... 62

optional

loading cut-sheet

feeder

............................. 31

loading the roll paper

stand

.............................. 32

roll paper stand ................ 31

paper jams

continuous forms

cut sheet .......................... 59

printer

location

parts ................................... 9

test print........................... 13

printing files.......................... 17

............................. 11

.............. 60

ribbon

changing

ordering............................ 72

........................... 68

setting paper thickness......... 33

specifications ........................ 78

switching OFF........................ 12

switching ON......................... 11

test page............................... 16

TOF

saving

............................... 58

setting .............................. 57

user guide

list

...................................... 7

printing............................... 8

installing options

cut-sheet feeder

network interface card...... 77

roll paper stand ................ 75

serial interface card.......... 77

interface

parallel

USB................................... 15

.............................. 15

............... 73

loading paper

continuous forms

cut sheet........................... 28

.............. 18

menu settings

confirming

initialising ......................... 57

list..................................... 42

........................ 40

operating instructions ........... 36

button functions ............... 39

indicators .......................... 37

option order numbers ........... 77

Index > 79

OKI P

Oki Systems (UK) Limited

550 Dundee Road Slough Trading Estate Slough, SL1 4LE

Tel:44 (0) 1753 819819 Fax:44 (0) 1753 819899 http://www.oki.co.uk

Oki Systems Ireland Limited

The Square Industrial Complex Tallaght, Dublin 24, Ireland

Tel:+353 1 4049590 Fax:+353 1 4049591 http://www.oki.ie

OKI Systems - Northern Ireland

40 Sydenham Park Belfast, BT4 1PW

Tel:+44 (0)28 90 20 1110 http://www.oki.ie

Technical Support for all Ireland: Tel:+353 1 4049570 Fax:+353 1 4049555 E-mail: tech.support@oki.ie

RINTING SOLUTIONS CONTACT DETAILS

Oki Printing Solutions contact details > 80

OKI ML5720, ML5721, ML5790, ML5791 User Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

OKI DIPUS

INDICATORS COLOUR STATUS MEANING