Oki C911, C931, C941, C942, ES9411 User's Manual Troubleshooting/Daily Maintenance Manual

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Troubleshooting

User’s Manual

Troubleshooting/Daily

Maintenance

Maintenance Manual

Read for any points that are not understood, or for maintenance

Index

C911 C931 C941 C942 ES9411 ES9431 ES9541 ES9542 Pro9431 Pro9541 Pro9542

Manual Conguration

The following user manuals are enclosed with the product.

The e-manual is stored as software on DVD-ROM.

Step

Read this first

Opening the box and installing the printer

Set-up Guide

This guide uses illustrations to explain the methods from opening the box to installation. For the advanced setup guide, see the "Basic".

Preparing the printer to print

Basic

This guide describes the precautions for safe use of the device. Make sure to read before use. Further, basic uses from the device installation methods to initial printing are also explained. The device functions are described in the appendix.

• Checking the product

• Parts nomenclature and functions

• Using the device to its fullest

• Installing the device

• Turning ON and OFF the power supply

• Test printing using the printer only

• Connecting to a PC

• Paper

• Printing

• Paper ejection

• Setting Power Save mode

• Setting auto power OFF

• Checking the print quantity,

consumables, remaining maintenance

unit quantity, and remaining service life

• Cancelling a print job

• Adding printers using LPD protocols

(TCP/IP)

• Table of control panel menu items

• Basic Windows procedures

• Printer specifications

Step

Read these guides as necessary

Try using various functions

Advanced

This guide explains the various paper print methods and how to use useful functions. Read to optimize the printing environment or to adjust the color, etc., using the enclosed utility software. Further, this guide also explains the items that can be set from the control panel, and the network settings.

Read for any points that are not understood, or for maintenance

Troubleshooting/Daily Maintenance Manual (This manual)

This manual explains the procedures for paper jams, and troubleshooting method if an error message is displayed. This manual also explains daily maintenance such as now to replace consumables and maintenance units, and cleaning, etc.

Using C941/C942/ES9541/ES9542/Pro9541/Pro9542

Separate Volume Spot Color Guide

This guide explains how to set up the Spot Color kit and check the printer drivers, and how to print using Spot Color. Make sure to read before use.

• Useful print functions

• Adjusting the color

• Using utility software

• Network settings

•

Checking and changing printer settings using the control panel

• Troubleshooting

• Maintenance

• Consumables, maintenance products,

options, color management server, etc.

• Setting the Spot Color kit

• Control panel explanation

• Checking the printer drivers

• Table of printer driver functions

• Printing on color paper

• Printing on transparent film

• Specifying and printing Spot Color

toner using the applications

• Fine-tuning white

• Switching Spot Color kits

- 2 -

ARNING

CAUTION

Reading the Manual

Symbols

Note

These are cautions and restrictions for the correct operation of the device. Make sure to read to avoid misoperation.

Memo

Knowledge of the information before using the device is useful and can act as a reference. Reading is recommended.

Reference

These are the reference pages. Read to learn detailed information and relevant information.

Mishandling due to ignoring this display may cause death or serious injury.

Mishandling due to ignoring this display may cause personal injury.

Keys, Buttons, and Symbols

This chapter described the following keys, buttons, and symbols.

Inscription Description

The control panel buttons and 10-key pad are described below.

E.g.:

[OK] button [BACK] button

[ ] button/key

[Fn] key [CLEAR] key

Indicates your PC keyboard.

Describes the menu name on the liquid crystal panel.

[ ]

" "

> Describes the menu level of the printer or PC.

Describes the PC menus, windows, and dialog box names.

Describes the messages and input text displayed in the liquid crystal

panel.

Describes the le and screen names on the PC.

Describes the reference title.

- 3 -

Illustrations

Screens

The printer illustrations used herein show the

C931 model unless otherwise specied.

Illustrations may differ from the actual product.

The images of the control panel and PC used herein are examples. The images may differ from actual products and screens.

- 4 -

Inscriptions

The following inscriptions are used in this manual.

C911dn → C911

C931dn → C931

C941dn → C941

C942dn → C942

ES9411dn → ES9411

ES9431dn → ES9431

ES9541dn → ES9541

Microsoft

Mac OS X10.3.9 or later → Mac OS X

The manuals enclosed with the printer use as examples Windows 7 in the case of Windows, and OS X

10.8 in the case of Mac OS X unless otherwise specied.

Depending on the OS and model used, descriptions in this manual may differ.

Windows® 7 64-bit Edition operating system → Windows 7 (64-bit Edition)

Windows® 7 operating system → Windows 7

- 5 -

Contents

Manual Conguration ........................................................................... 2

Reading the Manual

Symbols .................................................................................................................. 3

Keys, Buttons, and Symbols....................................................................................3

Illustrations

Screens...................................................................................................................4

Inscriptions

............................................................................................................ 4

............................................................................................................ 5

............................................................................. 3

1 Troubleshooting ................................................................... 9

Troubleshooting solutions procedure ................................................. 10

Paper jams

Checking messages (if a paper jam occurs) .......................................................... 11

Removing jammed paper

If paper messages are displayed ....................................................... 36

If replace consumables messages are displayed

If other messages are displayed

Printing Troubles

Unable to print ..................................................................................................... 46

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

...................................................................................... 14

............................... 38

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

............................................................................... 46

Printer driver malfunctions

Print quality is poor

Paper feed is poor

When image disturbance occurs

Adjusting the print result

.............................................................................................. 52

................................................................................................ 57

................................................................................... 50

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

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

2 Maintenance ...................................................................... 59

Replacing consumables and maintenance unit ................................... 60

Consumables and maintenance unit service life ...................................................60

When the replacement period is approaching

Replacing toner cartridges.................................................................................... 63

Replacing Image Drums

Replacing belt units and transfer roller units

Replacing fuser units

Replacing waste toner boxes

Replacing paper feed rollers

....................................................................................... 66

............................................................................................ 75

................................................................................ 77

................................................................................. 79

Device Maintenance ........................................................................... 87

Cleaning device surfaces ...................................................................................... 87

....................................................... 62

........................................................ 69

Cleaning LED heads

Cleaning feed rollers

.............................................................................................. 87

............................................................................................. 93

- 6 -

Cleaning the Transfer Roller Unit and Paper Transfer Path ................................... 96

Cleaning the Pinch Roller

...................................................................................... 99

Moving and shipping the device ...................................................... 100

Moving the device ............................................................................................. 100

Shipping the device

.......................................................................................... 100

Index .................................................................................... 102

- 7 -

Memo



- 8 -

Troubleshooting

Troubleshooting solutions procedure … 10

Troubleshooting

Paper jams

If paper messages are displayed

If replace consumables messages are displayed

If other messages are displayed

Printing Troubles

……………………………………… 11

……… 36

………………………………… 38

………40

…………………………… 46

IndexMaintenance

- 9 -

Troubleshooting solutions procedure

This chapter describes the procedure for solving the problems occurred while using the printer.

Troubleshooting

If you are unable to solve the problem with this procedure, contact your dealer.

Is error message or error code displayed on the control panel?

If it is displayed If it is not displayed

to the page 11 and solve it.

timing or service life of consumables and maintenance items, refer to the page 60 and solve it.

refer to the page 36 and solve it.

IndexMaintenance

Call your designated help desk.

When there is a display of paper jam, refer

When there is a display of replacement

When there is a display of other errors,

When you cannot solve

Record the error message displayed on the control panel.

In the even to trouble refer to the

following pages for solution.

zUnable to print: page 46

zPrinter drivers cannot be installed: page 50

zUnable to print with ne quality: page 52

zAbnormal paper feeding: page 57

- 10 -

Paper jams

This section describes the procedure when a paper is jammed inside the printer, or when paper is remaining inside the printer even after removing it.

Checking messages (if a paper jam occurs)

When a paper is jammed inside the printer, or when paper is remaining inside the printer even after removing it, a message notifying paper jam will appear on the liquid crystal panel of the operation panel, and the <ATTENTION> lamp will blink.

When "Please see HELP for details" is shown in the message, pressing the [HELP] button in the operation panel will show the troubleshooting procedure, and you can easily solve the process according to the guidance. For details, refer to “Operating the Help screen”(P.13).

Troubleshooting

IndexMaintenance

[HELP] button

Liquid crystal panel

<ATTENTION> lamp

The following table shows the messages. Check the message, and remove the jammed paper according to the procedure described in the reference.

- 11 -

Paper jams

Category

Troubleshooting

Paper jam (When a paper is jammed inside the printer)

IndexMaintenance

Message does not disappear (When the message does not disappear even after removing the jammed paper)

Message displayed on the liquid crystal

panel

Open Right Side Cover Paper Jam Please see HELP for details

Open [TRAY]* Side Cover Paper Jam Please see HELP for details

Open Left Side Cover Paper Jam Please see HELP for details

Check Exit Unit Paper Jam Please see HELP for details

Check Duplex Unit Paper Jam Please see HELP for details

Check the lower side of Duplex Unit Paper Jam Please see HELP for details

Open [TRAY]* Side Cover Paper Remain Please see HELP for details

Open Right Side Cover Paper Remain Please see HELP for details

Check Exit Unit Paper Remain Please see HELP for details

Check Duplex Unit Paper Remain Please see HELP for details

Check the lower side of Duplex Unit Paper Remain Please see HELP for details

Check Face Down Stacker Paper Remain Please see HELP for details

Location of

paper jam

Paper jam in the vicinity of Right Side Cover

Paper jam in the vicinity of tray side cover

Paper jam in the vicinity of Left Side Cover

Paper jam in the exit unit

Paper jam in the vicinity of the fuser unit

Paper jam in the vicinity of the 2-Sided Printing unit

Paper jam in the vicinity of the lower side of 2-Sided Printing unit

Paper jam in the vicinity of TRAY Side Cover

Paper jam in the vicinity of Right Side Cover

Paper jam in the exit unit

Paper jam in the vicinity of the 2-Sided Printing unit

Paper jam in the vicinity of the lower side of 2-Sided Printing unit

Paper jam in the vicinity of Left Side Cover

Error code

displayed after

pressing the

[HELP] button

380, 390

391, 392, 393, 394, 395

384

381

382, 383, 389

370, 371, 373

375

631, 632, 633, 634, 635

637

638, 639

640, 641, 642

650

651

Reference

pages

page 14

page 24

page 34

page 15

page 20

page 25

page 30

page 24

page 14

page 15

page 25

page 30

page 34

*: Either of Tray 1 to Tray 5 will appear in [TRAY]. (Tray 2 to Tray 5 will be displayed when the option of additional tray units is

mounted.) Either of Tray 1 Side Cover to Tray 5 Side Cover will appear in [COVER]. (Tray 2 Side Cover to Tray 5 Side Cover will be displayed when the option of additional tray units is mounted.)

- 12 -

Paper jams

Operating the Help screen



Pressing the [HELP] button in the operation panel will display the solution method. You can easily remove the paper according to the guidance.

Example) Paper jam in the vicinity of Tray 1 Side Cover

The following message will appear on the liquid crystal panel, and the <ATTENTION> lamp will blink.

Press the [HELP] button.

The error code will appear and the condition of paper jam will be displayed.

Press the scroll button .

The next page will appear, and solution procedure for paper jam and corresponding animation will be displayed.

Memo

Press the scroll button

page.

Scroll the pages of the Help screen with

the scroll button paper according to the solution method for paper jam displayed on the screen.

to return to the previous

, and remove the

Troubleshooting

IndexMaintenance

- 13 -

Removing the jammed paper will return the display to the Standby screen and the remaining printing will start.

Paper jams

Removing jammed paper

Removing paper jam in the

Troubleshooting

vicinity of Right Side Cover

Error code: 380, 390, 637



If paper is set in the MP tray, remove it

IndexMaintenance

and close the tray.

Slowly remove the remaining paper.

Close the right side cover.

Lift the opening( ), and open the right

side cover.

Open the MP tray.

- 14 -

Paper jams

CAUTION

Pull the set lever ( ) on the right side

of the paper supporter ( ) towards yourself.

Set the print side for the removed

paper to face up.

Removing paper jam in the exit unit

Error code: 381, 638, 639



Possible to get burned.

Work carefully as the temperature of fuser unit is high. Ensure to hold the handle when lifting. When it is hot, wait until it cools down before starting the work.

Lift opener ( ) of the exit unit, and pull

out the exit unit.

Troubleshooting

IndexMaintenance

Match the paper guide with the paper.

- 15 -

Paper jams

Troubleshooting

IndexMaintenance

Check inside of the printer, and slowly remove the remaining paper.

If there is remaining paper in the fuser unit then pull up the fuser unit's jam release lever (blue).

Push down the fuser unit's jam release

lever (blue).

If there is no remaining paper in the

fuser unit then pull up the fuser unit's lock lever (blue).

Ensure to slowly pull the remaining

paper towards the printer body (opposite to the paper feeding direction).

Hold the fuser unit handle with both

hands, and remove it onto a at

surface.

- 16 -

Paper jams

Raise the jam release lever of the fuser

unit.

Remove the remaining paper.

If the paper winds around the decal roller, remove the decal unit by turning the

thumbscrews at both ends of the decal unit to the left, and remove the paper.

Note

Be careful not to drop the thumbscrew into the

device when removing.

Troubleshooting

IndexMaintenance

- 17 -

Paper jams

Troubleshooting

IndexMaintenance

Return the decal unit to its original

position, and x it with two

thumbscrews.

Note

Be careful not to drop the thumbscrew into the

device when xing.

Push down the fuser unit's lock lever

(blue).

If paper is set in the MP tray, remove it

and close the tray.

Hold the fuser unit handle with both

hands, and set to the output unit.

- 18 -

Paper jams

Lift the opener ( ), and open the right

side cover.

Close the right side cover.

Troubleshooting

Open the MP tray.

IndexMaintenance

Slowly remove the remaining paper.

Pull the set leve ( ) on the right side

of the paper supporter ( ) towards yourself.

- 19 -

Paper jams

CAUTION

Troubleshooting

IndexMaintenance

Match the paper guide with the paper.

Set the print side for the removed paper to face up.

Removing paper jam in the vicinity of the fuser unit

Error code: 382, 383, 389



Possible to get burned.

Work carefully as temperature of fuser unit is high. Ensure to hold the handle when lifting. When it is hot, wait until it cools down before starting the work.

Lift opener ( ) of the exit unit, and pull

out the exit unit.

When you cannot see the jammed paper, return the exit unit to the printer, and go to “Removing paper from the

2-Sided Printing unit”(P.23).

Put the output unit back into the printer.

- 20 -

Paper jams

If there is remaining paper in the fuser

unit then pull up the fuser unit's jam release lever (blue).

Ensure to slowly pull the remaining

paper towards the printer body (opposite to the paper feeding direction).

If there is no remaining paper in the

fuser unit then pull up the fuser unit's lock lever (blue).

Hold the fuser unit handle with both

hands, and remove it onto a at

surface.

Troubleshooting

IndexMaintenance

Push down the fuser unit's jam release

lever (blue).

If a paper jam occurred in the fuser

unit, raise the jam release lever (blue), and slowly pull the paper out in the opposite direction from the paper operation direction.

- 21 -

Paper jams

Troubleshooting

IndexMaintenance

If the paper winds around the decal roller, remove the decal unit by turning the thumbscrews at both ends of the decal unit to the left, and remove the paper.

Note

Be careful not to drop the thumbscrew into the

device when xing.

Return the decal unit to its original

position, and x it with two

thumbscrews.

Note

Be careful not to drop the thumbscrew into the

device when removing.

- 22 -

Hold the fuser unit handle with both

hands, and set to the exit unit.

Paper jams

Push down the fuser unit's lock lever

(blue).

Put the exit unit back into the printer.

Removing paper from the 2-Sided



Printing unit

Pull out the 2-Sided Printing unit, lift it

up a little with both hands, and remove it.

Note

Do not pull the 2-Sided Printing unit out in one shot.

2-Sided Printing unit may fall down if you pull it out in one shot, which may damage it.

Troubleshooting

IndexMaintenance

Remove the remaining paper.

- 23 -

Paper jams

Troubleshooting

IndexMaintenance

Put the 2-Sided Printing unit back into the printer.

Removing paper from the vicinity of Tray Side Cover

Error code: 391, 392, 393, 394,



395, 631, 632, 633, 634, 635

Example) In the case of Tray 1

Open the tray side cover where the

error is displayed.

- 24 -

Remove the remaining paper.

Paper jams

Close the Tray 1 side cover.

Removing paper from the vicinity of the 2-Sided Printing unit

Error code: 370, 371, 373, 640,



641, 642

Pull out the 2-Sided Printing unit, lift it

up a little with both hands, and remove it.

When you cannot see the jammed paper in the 2-Sided Printing unit inside the printer, put the 2-Sided Printing unit back into the printer and go to Step 4.

Troubleshooting

IndexMaintenance

Remove the remaining paper.

- 25 -

Paper jams

Troubleshooting

IndexMaintenance

Put the 2-Sided Printing unit back into the printer.

Lift opener ( ) of the exit unit, and pull

out the exit unit.

Check inside of the printer, and slowly

remove the remaining paper.

- 26 -

Paper jams

If the paper tip is not visible, pull up

the fuser unit's lock lever (blue).

Hold the fuser unit handle with both

hands, and remove it onto a at

surface.

If the paper winds around the decal roller,

remove the decal unit by turning the thumbscrews at both ends of the decal unit to the left, and remove the paper.

Note

Be careful not to drop the thumbscrew into the

device when removing.

Troubleshooting

IndexMaintenance

- 27 -

Paper jams

Troubleshooting

IndexMaintenance

Return the decal unit to its original

position, and x it with two

thumbscrews.

Note

Be careful not to drop the thumbscrew into the

device when xing.

Hold the knob, pull up the transfer roller

unit, lift the paper guide, and remove the remaining paper.

- 28 -

Paper jams

Hold the knob, push down the transfer

roller unit.

Hold the fuser unit handle with both

hands, and set to the exit unit.

Push down the fuser unit's lock lever

(blue).

Put the exit unit back into the printer.

Troubleshooting

IndexMaintenance

- 29 -

Paper jams

Removing paper from the vicinity of the lower side of

2-Sided Printing unit

Troubleshooting

Error code: 375, 650



Pull out the 2-Sided Printing unit, lift it

up a little with both hands, and remove it.

IndexMaintenance

Put the 2-Sided Printing unit back into

the printer.

Remove the remaining paper from the

printer.

If no paper remains in visible locations in the printer, follow the procedure given below.

- 30 -

Paper jams

Lift opener ( ) of the exit unit, and

remove the remaining paper.

If the paper tip is not visible, pull up

the fuser unit's lock lever (blue).

Hold the fuser unit handle with both

hands, and remove it onto a at

surface.

Troubleshooting

IndexMaintenance

- 31 -

Paper jams

Troubleshooting

IndexMaintenance

If the paper winds around the decal roller, remove the decal unit by turning the thumbscrews at both ends of the decal unit to the left, and remove the paper.

Note

Be careful not to drop the thumbscrew into the device

when removing.

Return the decal unit to its original

position, and x it with two

thumbscrews.

Note

Be careful not to drop the thumbscrew into the device

when xing.

- 32 -

Paper jams

Hold the knob, pull up the transfer roller

unit, lift the paper guide, and remove the remaining paper.

Hold the knob, push down the transfer

roller unit.

Hold the fuser unit handle with both

hands, and set to the exit unit.

Troubleshooting

IndexMaintenance

Push down the fuser unit's lock lever

(blue).

- 33 -

Paper jams

Troubleshooting

IndexMaintenance

Put the exit unit back into the printer.

Removing paper from the vicinity of Left Side Cover

Error code: 384, 651



Open the left side cover.

Slowly remove the remaining paper.

Close the left side cover.

- 34 -

When paper jam occurs frequently



Check the following when paper jam occurs very frequently.

Paper jams

Is the feeding paper roller dirty? (“Cleaning

feed rollers”(P.93))

Is the paper guide set correctly? (Refer to

"Setting the Paper in the Basic")

Is the paper set after ipping through it

carefully? (Refer to "Setting the Paper in the Basic")

Is the printer installed on a at and stable

surface?

Are you using the paper compatible with the

printer?

Are there any fragments of paper remaining

inside the printer?

Troubleshooting

IndexMaintenance

- 35 -

If paper messages are displayed

When paper type/size set in the printer tray differs from the printer driver specication, message such

as "Replace paper" and "Paper size error has occurred" will appear, and the <ATTENTION> lamp will

Troubleshooting

blink.

Messages related to paper and error codes, cause of errors and their resolutions, and status of the <ATTENTION> lamp is described below.

Besides, when "Please see HELP for details" is shown in the message, pressing the [HELP] button in the operation panel will show the solution procedure, and you can easily solve the process according to the guidance. Refer to “Operating the Help screen”(P.13) for details.

Memo

Meanings of the symbols used in the error messages are as follows.

– [TRAY]: Tray 1, Tray 2 to Tray 5 (Displayed when the option of additional tray units is mounted.), either of the MP trays will

be displayed.

– [MEDIA_SIZE]: Paper size is displayed.

– [MEDIA_TYPE]: Paper type is displayed.

Category

IndexMaintenance

Load paper Please change [TRAY] paper

Empty Install [MEDIA_SIZE] in [TRAY]

Message displayed on the

liquid crystal panel

Ensure [MEDIA_SIZE], [MEDIA_TYPE] is installed. If printing fails, cancel and re-adjust tray settings Pressing OK will print using current paper tray settings Please see HELP for details

Change [MEDIA_SIZE], [MEDIA_TYPE] in [TRAY] Press OK button Please see HELP for details

Change [MEDIA_SIZE], [MEDIA_TYPE] in MPTray Press OK button Please see HELP for details

Please see HELP for details

Install [MEDIA_SIZE] in MPTray

Please see HELP for details

Error

code

461 462 463 464 465

661 662 663 664 665

660 460

491 492 493 494 495

490 Blinking The MP tray is empty.

lamp

Blinking The size of the paper in the tray, or

Blinking The type of paper in the tray is

Blinking The type of paper in the MP tray

Blinking Tray shown in the message is empty.

Causes and Troubleshooting

the paper size and the paper type, are different from the printer driver

specications.

Set the paper having size or type shown in the message. Printing will start if the paper size is matching.

different from the specications of the

printer driver. Set the paper having size or type shown in the message.

is different from the print driver

specications.

Set the paper having size or type shown in the message.

- 36 -

If paper messages are displayed

Category

Paper size Error

Message displayed on the

liquid crystal panel

Remove Excess Paper and Reset Tray [TRAY] Please see HELP for details

Check Paper in [TRAY] Paper Thick Error Please see HELP for details

Check Paper in [TRAY] Paper Multi Feed Please see HELP for details

Check Paper in [TRAY] Paper Size Error Please see HELP for details

Reset Tray [TRAY] Please see HELP for details

Error

code

530 531 532 533 534

323 324 325 326

401 Blinking Multiple sheets of paper have been fed.

400 Blinking Printing has been conducted on paper

520 521 522 523 524

lamp

Blinking The paper in the tray may exceed the

Blinking In the tray shown in the message,

Blinking Paper cannot be fed from the tray

Causes and Troubleshooting

maximum limit, or the paper tray may need to be reset. Please remove paper from the tray shown.

paper of a different thickness is detected. To cancel printing, press the [CANCEL] button. If multiple errors occur, you can not cancel printing. Press the [HELP] button, and solve according to the guidance shown on the Help screen.

To cancel printing, press the [CANCEL] button. If multiple errors occur, you can not cancel printing. Press the [HELP] button, and solve according to the guidance shown on the Help screen.

which is of a different size from the

specications of the printer driver.

To cancel printing, press the [CANCEL] button. If multiple errors occur, you can not cancel printing. Press the [HELP] button, and solve according to the guidance shown on the Help screen.

shown in the message. Reset the paper in the tray shown in the message.

Troubleshooting

IndexMaintenance

- 37 -

If replace consumables messages are displayed

When timing for replacement of consumables and maintenance items approaches, or when the

replacement becomes necessary, message such as "Time for replacing ABC is approaching" and "ABC is

Troubleshooting

empty / Replace ABC" will appear, and the <ATTENTION> lamp will start blinking. Messages related to replacement of consumable supplies and error codes, cause of errors and their

resolutions, and status of the <ATTENTION> lamp is described below. Besides, when "Please see HELP for details" is shown in the message, pressing the [HELP] button in the

operation panel will show the solution procedure, and you can easily solve the process according to the guidance. For details, refer to “Operating the Help screen”(P.13).

IndexMaintenance

Memo

Meanings of the symbols used in the error messages are as follows.

– [COLOR]: Either of Only Yellow, Only Magenta, Only Cyan, Only Black, White*1, and Clear*2 will be displayed. *1: White will appear only for C941/C942/ES9541/ES9542/Pro9541/Pro9542. *2: Clear will appear only for C941/ES9541/Pro9541.

Category

Toner Cartridge

Image Drum

Message displayed on the

liquid crystal panel

Install Toner Black Please see HELP for details

Install Toner [COLOR] Please see HELP for details

Install Toner Or Press OK Button [COLOR] Please see HELP for details

Install Toner Or Press OK Button [White]/[Clear] Please see HELP for details

Install [COLOR] New Image Drum Image Drum Life Please see HELP for details

Install [COLOR] New Image Drum Image Drum Life To Exceed the Life, Press OK Button Please see HELP for details

Error

code

4103 Blinking Black Toner Empty

Printing 4100 4101 4102 4103* 4104 4105

Powering on 4100 4101 4102

Powering on 4104 4105

3500 3501 3502 3503 3504 3505 5600 5601 5602 5603 5604 5605

5640 5641 5642 5643 5644 5645

lamp

Press the [HELP] button, and solve according to the guidance shown on the Help screen. (C911/C931/C941/ES9411/ES9431/ ES9541/Pro9431/Pro9541 only)

Blinking Toner color shown in the

message is empty. Press the [HELP] button, and solve according to the guidance shown on the Help screen. If you switch the power back on, please refer to the box below. *: 4103 will appear only for

Blinking Toner Empty.

If you press the [OK] button, only mono printing will continue. Press the [HELP] button, and solve according to the guidance shown on the Help screen.

Blinking Toner Empty.

If you press the [OK] button, mono or 4-color printing will continue. Press the [HELP] button, and solve according to the guidance shown on the Help screen.

Blinking Lifespan of the image drum

shown in the message has reached. Press the [HELP] button, and solve according to the guidance shown on the Help screen.

Blinking The lifespan of the image drum

has been reached. If you press [OK], printing will continue, but the print quality cannot be guaranteed. Press the [HELP] button, and solve according to the guidance shown on the Help screen.

Causes and

Troubleshooting

C942/ES9542/Pro9542.

Reference

pages

page 64

page 66

- 38 -

If replace consumables messages are displayed

Category

Image Drum

Waste Toner Box

Fuser Unit Install New Fuser Unit

Belt Unit Install New Belt Unit

- Caution, unknown Consumable

Message displayed on the

liquid crystal panel

Install [COLOR] New Image Drum Printing disabled due to low threshold of Image Drum life Please see HELP for details

Check Image Drum [COLOR] Please see HELP for details

Install New Waste Toner Box Waste Toner Full Please see HELP for details

Fuser Unit Life Please see HELP for details

Belt Unit Life Please see HELP for details

detected Go to User Manual "Trouble Shooting" to restore operation

Error

code

6800 6801 6802 6803 6804 6805

3400 3401 3402 3403 3404 3405

357 Blinking Waste toner is full.

354 Blinking Lifespan of the fuser unit has

355 Blinking Lifespan of the belt unit and

709 Blinking You can use any consumables

lamp

Blinking The lifespan of the image drum

has been reached. You cannot continue printing. Press the [HELP] button, and solve according to the guidance shown on the Help screen.

Blinking Image drum shown in the

message has not been set correctly. Press the [HELP] button, and solve according to the guidance shown on the Help screen.

If you re-set and use a waste toner box that is already used, there is a risk of the waste toner

overowing, so please replace it

with a new waste toner box. Press the [HELP] button, and solve according to the guidance shown on the Help screen.

reached Press the [HELP] button, and solve according to the guidance shown on the Help screen.

the transfer roller unit has been reached. Press the [HELP] button, and solve according to the guidance shown on the Help screen.

in your product, but you must accept the risks of using nongenuine consumables. If the use of non-genuine consumables causes damage to the product or results in your product not functioning to its full

specication, then such damage

or effect on the product is not covered by warranty. To accept these risks and to restore function;

1. Turn off your product.

2. Press and hold the [CANCEL] button and turn your product on.

3. After start up, release the [CANCEL] button.

Note

This operation will be recorded for future reference.

Causes and

Troubleshooting

Reference

pages

page 66

page 77

page 75

page 69

Troubleshooting

IndexMaintenance

- 39 -

If other messages are displayed

Other messages and error codes, cause of errors and their resolutions, and status of the <ATTENTION>

lamp are described below.

Troubleshooting

Besides, when "Please see HELP for details" is shown in the message, pressing the [HELP] button in the operation panel will show the solution procedure, and you can easily solve the problem according to the guidance. For details, refer to “Operating the Help screen”(P.13).

Memo

Meanings of the symbols used in the error messages are as follows.

– [COLOR]/[MENUCOLOR]: Either of Only Yellow, Only Magenta, Only Cyan, Only Black, White*, and Clear** will be displayed.

*: White will appear only for C941/C942/ES9541/ES9542/Pro9541/Pro9542.

**: Clear will appear only for C941/ES9541/Pro9541.

– [TRAY]: Tray 1, Tray 2 to Tray 5 (Displayed when the option of additional tray units is mounted.), either of the MP trays will

be displayed.

– [COVER]: Either front cover, Tray 1 side cover to Tray 5 side cover (Tray 2 side cover to Tray 5 side cover will be displayed

when the option of additional tray units is mounted.), or exit unit cover will be displayed.

– [CODE]: Detailed information of the error will be displayed.

IndexMaintenance

Message displayed on the

liquid crystal panel

Power Off/On [ERRCODE]: Error

Image Drum Not Installed [COLOR] Please see HELP for details

Image Drum Sensor Error Please check [COLOR] image drum and reset Please see HELP for details

Remove Paper [STACKER] Please see HELP for details

[STACKER]: Either Face Up Stacker or

Face Down Stacker will be displayed.

Press OK Button for Restoration

Memory Overow

Please see HELP for details

A spot color printing error has occurred. Data will be erased. Check the paper and paper settings, then print again. To turn off the display, press OK Please see HELP for details

Error

code

6940 6941 6942 6943 6944 6945

5400 5401 5402 5403 5404 5405

480 484

420 Blinking Cannot print. Printing data has

459 Blinking

lamp

- Blinking A fatal error has occurred.

Blinking The image drum shown in the

Blinking Sensor error has occurred in the

Blinking The paper stacker is full.

Causes and Troubleshooting

If the error is not resolved by restarting the printer, contact your designated help desk.

message has not been installed. Press the [HELP] button, and solve according to the guidance shown on the Help screen.

image drum shown. Sensor may be unclean or stopper is installed. Press the [HELP] button, and solve according to the guidance shown on the Help screen.

Remove Paper from stacker.

exceeded the memory capacity of the printer. In the Quality of printer driver, select [Fine/Detail] or [Normal], and print once again. Press the [OK] button for deleting the display of the liquid crystal panel.

Printing is stopped because of print request from an incompatible custom media, and data is deleted. Print once again. Press the [OK] button for deleting the display of the liquid crystal panel.

Reference

pages

[Advanced] >

[Print with

best quality]

- 40 -

If other messages are displayed

Message displayed on the

liquid crystal panel

Close Cover [COVER] Please see HELP for details

Non Genuine Image Drum [COLOR] Please see HELP for details

Incompatible Image Drum [COLOR] Please see HELP for details

Error

code

311 312 313 314 315 585 588 589

6840 6841 6842 6843 6844 6845

6900 6901 6902 6903 6904 6905 7000 7001 7002 7003 7004 7005 7040 7041 7042 7043 7044 7045 7100 7101 7102 7103 7104 7105 7200 7201 7202 7203 7204 7205

lamp

Blinking The cover shown in the message is

Blinking The image drum is not intended for

Causes and Troubleshooting

open. Close the cover.

use with this printer model. Use an image drum intended for use in this printer model.

Reference

pages

Troubleshooting

IndexMaintenance

- 41 -

If other messages are displayed

Troubleshooting

Incompatible Toner [COLOR] Please see HELP for details

IndexMaintenance

Non Genuine Toner [COLOR] Please see HELP for details

Non Genuine Fuser Unit

Please see HELP for details

Incompatible Fuser Unit

Please see HELP for details

Non Genuine Belt Unit

Please see HELP for details

Incompatible Belt Unit

Please see HELP for details

Fuser Unit Not Installed

Please see HELP for details

Message displayed on the

liquid crystal panel

Error

code

5540 5541 5542 5543 5544 5545 6140 6141 6142 6143 6144 6145 6200 6201 6202 6203 6204 6205 6240 6241 6242 6243 6244 6245 7140 7141 7142 7143 7144 7145

5500 5501 5502 5503 5504 5505

6981 Blinking Fuser unit not intended for use

6982 6983 6984 6985 6986 6987

6881 Blinking Belt unit not intended for use with

6882 6883 6884 6885 6886

699 Blinking

lamp

Blinking Toner cartridge is not intended for

Blinking Fuser unit not intended for use with

Blinking Belt unit not intended for use with

Causes and Troubleshooting

use with this printer model. Use a toner cartridge intended for use in this printer model.

with this printer model. Use a fuser unit intended for use in this printer model.

this printer model. Use a fuser unit intended for use in this printer model.

this printer model. Use a belt unit intended for use in this printer model.

The fuser unit is not installed properly. Press the [HELP] button, and solve according to the guidance shown on the Help screen.

Reference

pages

- 42 -

If other messages are displayed

Message displayed on the

liquid crystal panel

Check Fuser Unit

Please see HELP for details

Receiving Data Timeout Press OK Button for Restoration Please see HELP for details

Check Data Message Data Write Error <[CODE]>

Install Transfer Roller Unit Re-set the transfer roller unit Please see HELP for details

A spot color printing error has occurred. Data will be erased Check the paper and paper settings, then print again. To turn off the display, press OK Please see HELP for details

The data will be deleted due to an overprint feature error Mount the duplex printing unit and print again. To turn off the display, press OK Please see HELP for details

The data will be deleted due to an overprint feature error Check the paper and paper settings, then print again. To turn off the display, press OK Please see HELP for details

Spot Color has been replaced Press OK to change the Spot Color settings in the menu to [COLOR] and restart the system If you do not want to change settings, return Spot Color toner, image drum and Spot Color duct settings to [MENUCOLOR].

Spot Color has been replaced Check Spot Color menu settings Current setting is [MENUCOLOR] Press OK Button

Spot Color settings changes Shut down and restart to enable new settings

Error

code

348 320

519 Blinking A data receipt timeout occurred.

334 Blinking The transfer roller unit is not set

459 Blinking

458 Blinking

456 Blinking Paper used for printing is not

679 Blinking Spot Color has been exchanged

678 Blinking Spot Color has been exchanged

677 Blinking

lamp

Blinking The fuser unit is not installed

- - Failed to write the message data to

Causes and Troubleshooting

correctly. Install the fuser unit correctly.

Increase the length of timeout print setting.

be updated. Check data.

correctly. Press the [HELP] button, and solve according to the guidance shown on the Help screen.

Because of a print request for paper unavailable to spot color printing, the printing has been stopped, and the data was deleted. Check the paper and paper settings, and print again. Press the [OK] button for deleting the display of the liquid crystal panel.

Spot Color over printing is specied,

but the 2-Sided Printing unit is not there. Printing was stopped and the print data was deleted. Install the 2-Sided Printing unit and print once again. Press the [OK] button for deleting the display of the liquid crystal panel. (C941/ES9541/Pro9541 only)

compatible for Spot Color over printing. Printing was stopped and the print data was deleted. Change the paper, or set to Normal and print once again. Press the [OK] button for deleting the display of the liquid crystal panel. (C941/ES9541/Pro9541 only)

Solve according to the message. (C941/ES9541/Pro9541 only)

Spot Color setting has been changed. Solve according to the message. (C941/ES9541/Pro9541 only)

Reference

pages

[Advanced] >

[List of Setting

Items of

the Device

Settings

Screen] >

[Timeout

Printing]

Troubleshooting

IndexMaintenance

- 43 -

If other messages are displayed

Troubleshooting

IndexMaintenance

Spot Color Duct has not been installed Please install the Spot Color Duct Please see HELP for details

Toner Duct has not been installed Please install the Toner Duct Please see HELP for details

Check Image Drum and Toner Cartridge [COLOR] Please see HELP for details

Check Toner Duct Please see HELP for details

Check Spot Color Duct

Please see HELP for details

Toner Not Installed [COLOR] Please see HELP for details

The toner replacement cover is open

Please see HELP for details

Install Paper Cassette [TRAY] Please see HELP for details

Install Exit Unit

Please see HELP for details

Check Waste Toner Box

Please see HELP for details

Reset Waste Toner Box Waste Toner Transfer Error Please see HELP for details

Message displayed on the

liquid crystal panel

Error

code

676 Blinking

676 Blinking Toner Duct has not been installed.

5440 5441 5442 5443 5444

5440 Blinking The toner duct is not properly

5444 5445

6100 6101 6102 6103 6104 6105

586 Blinking The toner replacement cover is

430 431 432 433 434

333 Blinking The exit unit is missing.

331 Blinking The waste toner box is not set

359 Blinking A waste toner transfer error has

lamp

Blinking The toner cartridge shown in the

Blinking The spot color duct is not properly

Blinking The toner cartridge shown in the

Blinking There is no paper cassette in the

Causes and Troubleshooting

Spot Color Duct has not been installed. Please install the Spot Color duct. (C941/ES9541/Pro9541 only)

Please install the Toner duct. (C942/ES9542/Pro9542 only)

message is not set correctly. Press the [HELP] button, and solve according to the guidance shown on the Help screen. *1: 5440 will appear only for C942/

ES9542/Pro9542.

*2: 5444 will appear only for C941/

ES9541/Pro9541.

installed. Reset the toner duct. Press the [HELP] button, and solve according to the guidance shown on the Help screen. (C942/ES9542/Pro9542 only)

installed. Reset the spot color duct. Press the [HELP] button, and solve according to the guidance shown on the Help screen. (C941/ES9541/ Pro9541 only)

message has not been installed. Press the [HELP] button, and solve according to the guidance shown on the Help screen.

open. Check that the toner cartridge is

pushed in rmly as far as it can go,

and close the toner cover.

tray shown in the message. Set the paper cassette in the tray shown in the message. When the paper cassette is already there in the tray, pull the cassette out and set it correctly.

Please install the exit unit.

correctly. Reset the waste toner box.

occurred. Press the [HELP] button, and solve according to the guidance shown on the Help screen.

Reference

pages

- 44 -

If other messages are displayed

Message displayed on the

liquid crystal panel

Firmware Update Error Please retry If network doesn’t work, please

try rmware update over USB

Open Stacker Face Up Stacker Please see HELP for details

Belt Unit Not Installed

Please see HELP for details

Check Belt Unit

Please see HELP for details

Power Off and Wait for a while 126: Condensing Error

Install Duplex Unit

Please see HELP for details

The data was deleted because a duplex printing error occurred Check the paper and paper settings, then print again. To turn off the display, press OK Please see HELP for details

Error

code

302 - Firmware update failed.

580 Blinking Face up stacker is closed.

689 Blinking The belt unit is not installed.

330 Blinking The belt unit is not set correctly.

360 Blinking The 2-Sided Printing unit is not set

455 Blinking

lamp

- Blinking Condensation has occurred inside

Causes and Troubleshooting

Follow the contents of the message.

Please open the face up stacker.

Press the [HELP] button, and solve according to the guidance shown on the Help screen.

the printer. Restart the printer after some time. If the error is not resolved by restarting the printer, contact your designated help desk.

correctly. Install the 2-Sided Printing unit correctly.

2-Sided printing cannot be done because the paper is too thick or it is small. Printing was stopped and the print data was deleted. Change the paper, or set to 1-Sided Printing and print once again. Press the [OK] button for deleting the display of the liquid crystal panel.

Reference

pages

Troubleshooting

IndexMaintenance

- 45 -

Printing Troubles

This section describes the possible troubles that may occur while operating the printer, and their

solution procedure.

Troubleshooting

Memo

If the problem is not solved using the following methods, contact your dealer.

For problems arising from the applications, contact the application development company.

Unable to print

Basic reasons

Common for Windows/Mac OS X



Cause Solution procedure

Power supply of the printer is switched off. Switch on the power supply. Basic

Power supply was switched off due to the auto power off function.

IndexMaintenance

Printer is in sleep mode.

LAN Cable/USB Cable is disconnected. Check that labels are correctly connected to the

Cables are defective. Replace with new cables. -

Printer is ofine.

Error message has appeared on the liquid crystal panel of the operation panel.

NBT, EtherTalk, and WSP Print protocols are used.

Interface settings are disabled. From [Admin Setup]>[Network Setup] on the

There is a problem with the print function. Check whether you can print the printer

Print will be automatically canceled. Print is not allowed when print job accounting

Switch on the power supply. When you do not want to use the auto power off function, disable it with [Admin Setup]>[Power Setup]>[Auto Power Off] in the operation panel.

Touch the [POWER SAVE] button on the operation panel, and change the status to the standby mode. When you do not want to use the sleep mode, disable the sleep mode from [Admin Setup]>[Power Setup]>[Sleep] in the operation panel.

printer and the computer.

Press the [ON LINE] button on the operation panel.

Press “If paper messages are displayed”(P.36),”If replace consumables messages are displayed”(P.38),”If other messages are displayed”(P.40), or the [HELP]

button on the operation panel.

When the sleep mode is enabled, disable it from [Admin Setup]>[Power Setup]>[Sleep] in the operation panel.

operation panel, enable the interface you are using.

information or not.

client is used. Or, job accounting log buffer may be full.

Reference

pages

Advanced

Basic

page 36 page 38 page 40

Advanced

Basic

Advanced

- 46 -

For Windows



Printing Troubles

Cause Solution procedure

This printer is not set as default printer. Set it to default printer. -

Output port of printer driver is incorrect. Select the output port where LAN cable/USB

cable is connected.

Printing from other interface is in progress. Wait until the printing is complete. -

Reference pages

Network Connection Problems

Common for Windows/Mac OS X



Cause Solution procedure

Cross cable is used. Arrange straight cable and hub, and connect

Compatibility problem with hub. Select [Admin Setup]>[Network Setup]>[Hub

There is a problem with hub. Insert network cable in the empty hub, or

Network cable is defective. Reconnect with a new or a different network

Incorrect IP address.

Duplicate IP address. Check that IP address of the printer does not

correctly.

Link Setting] from the operation panel, and change the settings.

another port. If the problem is still not solved, use another hub.

cable, and check again.

Check that IP address settings of the printer,

and IP address of the printer set in the computer are matching. If you are using OKI LPR Utility on Windows,

check IP address settings in OKI LPR Utility. Check that IP address is not overlapping with

other device. Check that correct address is set in IP

address, Subnet mask, and Gateway address.

overlap with other IP address.

Reference pages

Basic

Advanced

Troubleshooting

IndexMaintenance

USB Connection Problems

Common for Windows/Mac OS X



Cause Solution procedure

Cable does not meet the standards. Use USB cable of USB 2.0 specications. Basic

USB hub is used. Directly connect the printer to the computer. -

Printer driver is not installed correctly. Please re-install the printer driver. Basic

For Windows



Cause Solution procedure

Printer is ofine. Right click the OKI C9xx icon in the [Devices and

Switch, buffer, extension cable, and USB hub are used.

Another printer driver operated through USB connection is installed.

Printers] folder, and select [See what’s printing] (When multiple drivers are installed>[OKI C9xx (*)]). Select the [Printer] menu in the dialog

displayed, and uncheck [Use Printer Ofine].

*: Select the type of required driver.

Directly connect the printer to the computer. -

From the computer, remove other printer drivers.

Reference pages

Basic

- 47 -

Printing Troubles

Printer Troubles

Troubleshooting

Memo

If the problem is not solved using the following explanation, contact your dealer.

Symptom Cause Troubleshooting

Nothing is displayed in the liquid crystal panel even after switching on the power supply.

Power supply cord is disconnected.

Power outage. Check if electricity is owing in

Does not function. Power supply cord is not

inserted rmly.

Power supply is not switched on.

LED lamp of the power supply switch is blinking at high speed at about 0.3 seconds interval.

IndexMaintenance

The printer has broken down. Unplug the power cord

Reference

pages

Switch off the power supply, and

rmly insert the power supply

cord.

the power socket.

Firmly insert the power supply cord.

Switch on the power supply. Basic

immediately, and then contact your dealer.

Basic

Printing process does not start. Error is displayed. Check the error code, and follow

the instructions displayed on the liquid crystal panel.

LAN Cable/USB Cable is not connected.

LAN Cable/USB Cable is defective.

LAN Cable/USB Cable does not meet the standards.

There may be a problem with the print function.

Interface is disabled. From [Admin Setup]>[Network

Printer driver is not selected. Set the printer driver to "default

Output port of printer driver is incorrect.

Liquid crystal display of the operation panel is blank.

Print data is not sent. LAN Cable/USB Cable is

Abnormal sound. Device is tilted. Install on a stable and a at

Printer is in sleep mode. Touch the [POWER SAVE]

damaged.

Computer had timed out. Increase the length of timeout. -

Firmly insert LAN Cable/USB Cable.

Use another LAN Cable/USB Cable.

Use a cable of USB 2.0

specications.

Use a cable of LAN Cable

1000 BASE-T Specications.

Check whether you can print the printer information or not.

Setup] on the operation panel, enable the interface you are using.

printer".

Specify the output port where LAN cable/USB cable is to be connected.

button on the operation panel, and change the status to the standby mode.

Connect a new cable. -

surface.

page 36 page 38 page 40

Basic

Advanced

Basic

- 48 -

Printing Troubles

Symptom Cause Troubleshooting

Resonant sound. While temperature inside the

device has increased, printing is done on a narrow paper or a thick paper.

Printing does not start immediately.

Printing stops in between. Temperature is adjusted

Not enough memory. Inadequate memory of the

Slow printing. Printing process is also done at

Display of the printer driver is abnormal. (Mac OS X)

Device is warming up for returning from the power saving mode or auto power off.

Cleaning of image drum may be in progress.

Temperature adjustment of the fuser unit is under progress.

Processing of data from other interface is in progress.

because temperature of the fuser unit increased due to continuous printing. Temperature is adjusted because temperature inside the device increased due to continuous printing for long time.

printer due to large printing data

the computer side.

Select [ProQ/High Quality] in the [Job Options] tab of the printer driver.

Complicated print data. Select simple print data. -

Printer driver may not be functioning correctly.

Reference

pages

Device has not broken down. Use the device as it is.

Please wait. When you do not want to use auto power off, select [Admin Setup]>[Power Setup]>[Sleep]/ [Auto Power Off], and disable both the modes.

Please wait. -

Wait until the printing is complete.

Please wait. Printing will automatically start again once temperature of the fuser unit has become appropriate. Please wait. Printing will automatically start again once temperature of the printer has become appropriate.

Print after lowering the quality of printer driver.

User a computer with fast processing speed.

In the [Advanced] tab of the printer driver, select [Fine/ Detail(1200x1200dpi)] or [Normal (600x600dpi)].

Delete the printer driver once, and re-install it.

Advanced

Troubleshooting

IndexMaintenance

- 49 -

Printing Troubles

Printer driver malfunctions

Troubleshooting

Memo

If the problem is not solved using the following explanation, contact your dealer.

For problems arising from the applications, contact the application development company.

USB Connection Problems

For Windows



Cause Solution procedure

Icon of the printer is not created in the [Devices and Printers] folder.

Even when installation of multiple printer drivers is selected, only the initial printer driver is installed.

IndexMaintenance

Reference

pages

Printer driver is not installed correctly. Basic

Install the second and subsequent printer drivers according to the following procedure.

1. Insert the "Software DVD-ROM" in the computer.

2. Click [Run Setup.exe], and follow the instructions provided on the screen.

3. Select [Custom Install], select the printer drivers you want to install on the [Install Software] screen, and then click the [Install] button.

4. When the [Installing] screen appears, click [Install on other ports].

5. Select [FILE] on the [Select Port] screen, and then click [Next].

6. Follow the instructions displayed on the

screen to nish the installation.

7. In [Devices and Printers], right click on the icon of driver you installed, and select [Printer properties] (or [OKI C9xx (*)] if installing multiple printer drivers).

8. From the list of the [Port] tab, select [USBxxx].

9. Click the [OK] button.

Error message such as "Printer driver installation failed" appears.

*: Select the type of driver you would like to set.

Use plug and play. Follow the procedure given below.

1. Check that power supply of the printer and computer is turned off.

2. Connect the USB cable.

3. Turn on the power supply of the printer.

4. Turn on the power supply of the computer.

5. When the [Search new software] wizard appears, set up according to the instructions displayed on the screen.

- 50 -

Problems concerning restrictions of OS

Printing Troubles

Restrictions concerning Windows 7/Windows 8/Windows 8.1/Windows



Vista/Windows Server 2008 R2/Windows Server 2008/Windows Server 2012/Windows Server 2012 R2

Item Symptom Causes and Troubleshooting

Printer driver Help does not appear. The Help function is not supported by the PS printer driver.

The [User Account Control] dialog appears.

Network Extension Help does not appear. The Help function is not supported.

The [User Account Control] dialog appears.

The [Program compatibility assistant] dialog will appear.

Color Correct Utility The [User Account

Control] dialog appears.

The [Program compatibility assistant] dialog will appear.

Color sample print utility The [User Account

Control] dialog appears.

The [Program compatibility assistant] dialog will appear.

PS Gamma Adjuster The [User Account

Control] dialog appears.

The [Program compatibility assistant] dialog will appear.

When starting installer or utility, the [User Account Control] dialog may appear. Click [Yes] or [go], and run installer or utility as administrator. Clicking [No] or [Cancel] will not start installer or utility.

When the [Program compatibility assistant] dialog appears after completion of installation (including when installation is aborted in the middle), ensure to click [This program installed correctly].

When the [Program compatibility assistant] dialog appears after completion of installation (including when installation is aborted in the middle), ensure to click [This program is successfully installed].

Troubleshooting

IndexMaintenance

- 51 -

Printing Troubles

Print quality is poor

Troubleshooting

Memo

If the problem is not solved using the following methods, contact your dealer.

Symptom Cause Troubleshooting

White stripe in perpendicular direction.

Paper feeding direction

Printing is blurred in perpendicular direction.

IndexMaintenance

Paper feeding direction

Printing is light.

Printing is blurred in some parts. Solid printing will result in the appearance of white dots or lines.

Stripes in perpendicular direction.

Reference

pages

LED head is unclean. Wipe LED head with a soft

tissue paper.

Low toner. Replace the toner cartridge. page 64

Deposit of foreign substances. Replace the image drum. page 66

Window lm of image drum is

unclean.

Image drum has not been set correctly.

LED head is unclean. Wipe LED head with a soft

Low toner. Replace the toner cartridge. page 64

Paper not supported. Use recommended paper. Basic

The toner cartridge is not installed correctly.

Low toner. Replace the toner cartridge. page 64

Paper is moist. Use paper stored at appropriate

Paper not supported. Use recommended paper. Basic

Paper not supported. Type and thickness setting of paper is inappropriate.

Recycled paper is used. Correct [Media Weight] in

Paper contains moisture. Dry it. Use paper stored at appropriate

Inappropriate settings of [Paper Black Setting] or [Paper Color Setting]. In the case of transparency settings, [Trans. Black Setting] or [Trans. Color Setting] is not properly set.

There are dents on the image drum.

Low toner. Replace the toner cartridge. page 64

Wipe window lm with a soft

tissue paper.

Please set the image drum correctly.

tissue paper.

Re-install the toner cartridge. page 64

temperature and humidity.

Correct [Media Weight] in the operation panel to the appropriate value. Or, change [Media Weight] to a thicker value than the present value.

the operation panel to the appropriate value. Or, change [Media Weight] to a thicker value than the present value.

temperature and humidity.

Change the value of [Printer Setting]>[Paper Black Adjust] or [Paper Color Setting]. In the case of transparency settings, change the value of [Trans. Black Setting] or [Trans. Color Setting]. If printing is blurred, raise the setting value. If white dots appear, lower the setting value.

Replace the image drum. page 66

page 87

page 66

page 87

Basic

Advanced

Paper feeding direction

- 52 -

Printing Troubles

Symptom Cause Troubleshooting

The front or rear edge of the paper is dirty.

Paper feeding direction

Image disturbance occurs to the printed portion.

Stripes or dots appear periodically in horizontal direction.

Paper feeding direction

Portion of white ground is lightly stained.

Reference

pages

The transfer roller is dirty. Run [Print Adjust] > [Transfer

Roller Cleaning] on the control panel.

The transfer roller unit or the paper transfer path is dirty.

The speed of the fuser unit is incorrect.

In the case of cycle length of about 125 mm, image drum may be unclean or there may be dents on it.

In the case of cycle length of about 38 mm, there is dirt inside the image drum.

In the case of cycle length of about 150 mm, there are dents on the fuser unit.

Image drum is exposed to light. Return the image drum inside

Dirt has deposited on the paper transfer path.

Paper has static electricity. Use paper stored at appropriate

Thick paper is used. Use thinner paper. -

Low toner. Replace the toner cartridge. Basic

Wipe the transfer roller unit and the paper transfer path with a soft tissue paper.

Feed ve sheets or more of plain

paper of 355.6 mm or above in length (larger than Legal14 but including A3 size).

Wipe it lightly with a soft tissue paper. If there are dents, replace the image drum.

Open and close the toner replacement cover, and repeat the initial operation.

Replace the fuser unit. page 75

the printer, and do not use the printer for a few hours. If it does not rectify even after that, replace the image drum.

Print few pages as test copies. -

temperature and humidity.

Advanced

page 96

page 58

page 66

Basic

page 66

Basic

Troubleshooting

IndexMaintenance

Border of characters is blurred.

When printing postcards, envelopes, or coated papers, printing will be thinly stained overall.

LED head is unclean. Wipe it with a soft tissue paper. page 87

Paper not supported. Use recommended paper. Basic

Paper is moist. Replace with a new paper. -

Printing of envelopes and coated papers will result in toner deposit overall.

Device has not broken down. Do not use coated paper to the extent possible.

- 53 -

Printing Troubles

Symptom Cause Troubleshooting

Rubbing it off will remove the

toner.

Troubleshooting

Specks appear on glossy papers.

Bold lines appear in horizontal direction.

IndexMaintenance

Paper feeding direction

Lateral-stripe white dots appear at the solid printing portion.

Type and thickness setting of paper is inappropriate.

Recycled paper is used. Correct [Media Weight] in the

Type and thickness setting of paper is inappropriate.

If the hardness of the paper is high, a shock has occurred at the time of transportation.

[Transfer Setting] is not properly set.

Correct [Media Weight] in the operation panel to appropriate value. Or, change [Media Weight] to a thicker value than the present value.

operation panel to appropriate value. Or, change [Media Weight] to a thicker value than the present value.

Correct [Media Weight] in the operation panel to appropriate value. Or, change [Media Weight] to a thicker value than the present value.

If a line is printed from the second page with black & white print, set the [Media Weight] to an appropriate value from the control panel. Or, change [Media Weight] to a thicker value than the present value. If [Ultra Heavy1] to [Ultra Heavy3] has been set and you want to improve the setting, select [Admin Setup] > [Print Setup] > [Mono-Print Mode] > [Color Mode] on the control panel. When the clear toner and white toner are not used, if [Ultra Heavy1] to [Ultra Heavy5] is set and the default custom media setting is used, change [Media Type] in control panel to [HQFORUH1] - [HQFORUH5] depending on the paper weight. (But, the print speed becomes lower.)

If a line is printed on 80mm position from the paper end with color print, set the [Heavy Media Adjust] to 0 from the control panel. To further improve, set to -5 ~ +5.

If white dots appear in cyan transfer, lower the setting value by selecting [Print Adjust] > [Transfer Setting] > [Cyan Transfer Setting] on the control panel. If white dots appear in other colors' transfer, lower the transfer setting value of the corresponding color.

Reference

pages

Advanced

- 54 -

Printing Troubles

Symptom Cause Troubleshooting

Border of the solid printing portion is lightly stained.

Does not print with color shades as you thought.

CMY 100% solid is thin.

Reference

pages

Paper is too dry. Use paper stored under

appropriate temperature and humidity.

Recycled paper is used. Select [Recycled] for the media

type.

[Paper Black Setting] or [Paper Color Setting] is not properly set.

Low toner. Replace the toner cartridge. page 64

Setting of [Black Finish] is not matching with the application.

Change color matching options. Change to color matching option

No color balance. Select [Calibration] on the

Misalignment of color. Open the toner replacement

[CMY 100% Density] is set to [Disable].

Raise the setting value of [Paper Black Setting] or [Paper Color Setting] under [Print Adjust] on the control panel.

In the [Black Finish] of printer driver, select [True Black (K)] or [Composite Black (CMYK)].

of the printer driver.

operation panel, and then run [Adjust Density].

cover at once, and the close it again. Select [Calibration] on the operation panel, and then run [Adjust Registration].

Select [Admin Setup]>[Color Setup]>[CMY 100%] in the operation panel, and select [Enable].

Basic

Advanced

Troubleshooting

IndexMaintenance

Black spots or white spots appear.

Stains are printed.

The entire paper is printed black.

Paper not supported. Use recommended paper. Basic

In the case of cycle length of about 125 mm, image drum may be unclean or there may be dents on it.

Paper is moist. Replace with a new paper. -

Paper not supported. Use recommended paper. Basic

The pinch roller is dirty. If foreign matter is found on

The device might have broken down.

Gently wipe the image drum with a soft tissue paper. If there are dents, replace the image drum.

the pinch roller, remove the dirt with a soft cloth or tissue paper.

Contact your dealer. -

page 66

page 99

- 55 -

Printing Troubles

Symptom Cause Troubleshooting

Nothing is printed. Multiple pages were fed in one

Troubleshooting

White streaks occur.

round of printing.

The device might have broken down.

Paper is moist. Replace with a new paper. -

Paper not supported. Use recommended paper. Basic

IndexMaintenance

Reference

pages

Re-set the papers after ipping

through.

Contact your dealer. -

- 56 -

Paper feed is poor

Printing Troubles

Memo

If the problem is not solved using the following methods, Contact your dealer.

Symptom Cause Troubleshooting

Paper jam occurs frequently. Device is tilted.

Feed paper roller is dirty Clean the feed paper roller. -

Position of the paper guide is not aligned.

Papers are not set correctly. Remove papers from the tray,

Multiple papers are pulled in simultaneously.

Papers are pulled in inclined direction.

Paper is not fed. Selection of [Paper Source] of

Device is not restored even after removing the jammed paper.

Paper gets curled. Creases appear on the paper.

Paper winds around the roller of the fuser unit.

Papers are either too thin or too thick.

Paper contains moisture or static electricity.

Paper has creases, folds, or curls.

Paper with the printed back is used.

Papers are not aligned properly.

Only one paper is set. Set multiple papers. -

Papers are added to the tray while keeping the existing papers as it is.

Papers are not set straight. Align the paper guide and paper

In the case of envelopes, there are curls or bulge.

the printer driver is incorrect.

Manual feeding is specied in

the printer driver.

- Open the toner replacement cover

Paper contains moisture or static electricity.

Thin paper is used. Correct [Media Weight] in the

Type and thickness setting of paper is inappropriate.

Thin paper is used. Please use thicker paper. -

Install on a stable and a at surface.

Align the paper guide to the position of the paper size set.

and set them in tray after ipping

through.

Use the papers compatible with the device.

Use the papers stored at appropriate temperature and humidity.

Use the papers compatible with the device. Correct if there are curls.

Already printed paper cannot be printed again from the tray. Print from the MP tray.

Flip through the papers, and set after aligning them in all directions.

Remove the papers that are already there in the tray, and set after aligning them in all directions with the papers to be added.

stopper of the tray with the paper. Or, align the manual feed guide of the MP tray with the paper.

Use the envelopes compatible with the device. Use the envelopes after correcting curls or bulge.

Check the paper tray, and select the correct tray in [Paper Source] of the printer driver.

Disable the Multipurpose tray is handled as manual feed setting.

at once, and the close it again.

Use the papers stored at appropriate temperature and humidity.

operation panel to the appropriate value. Or, change [Media Weight] to a thicker value than the present value.

Correct [Media Weight] in the operation panel to the appropriate value. Or, change [Media Weight] to a thicker value than the present value.

Reference

pages

Advanced

Troubleshooting

IndexMaintenance

- 57 -

Printing Troubles

When image disturbance occurs

If image distortion occurs to the end of printed paper while printing with heavy paper or paper with

short feeding length (less than 230 mm), manually change the paper weight according to the paper you

Troubleshooting

are using.

If the condition does not improve after this operation, continuously print 5 pages or more with normal paper (64-128g/m

Adjusting the print result

Adjustment Item What you can do Reference Manual

Correct the print starting position. Corrects the X and Y of print starting

Adjust the scale of print result. Adjusts the scale of print result in the paper

IndexMaintenance

) of 355.6 mm or more in length (legal 14 or more, or A3 size).

position. Correcting Range: -2.0mm ~ +2.0mm (By

0.25mm)

running direction. Adjusting Range: -0.25% ~ +0.50% (By

0.05%)

Advanced

- 58 -

Maintenance

Replacing consumables and maintenance unit

Device Maintenance

Moving and shipping the device

……………………………………………… 60

………………………… 87

……… 100

Maintenance

IndexTroubleshooting

- 59 -

Replacing consumables and maintenance unit

This section describes the replacement method of consumables and maintenance unit and their lifespan.

Consumables and maintenance unit service life

Ballpark indicator of replacement of consumables and maintenance unit is as follows.

Toner cartridge (CMYK)

Maintenance

IndexTroubleshooting

With a standard toner cartridge, the printable pages for continuous printing is about 10,000. With a high capacity toner cartridge, the printable pages for continuous printing is about 24,000. (A4 1-side printing. Print density is as far factory default settings and compliant to ISO/IEC19798)

Printing quality will decline after 1 year has passed from opening the package. Therefore, prepare a new toner cartridge.

Even if the cyan (blue), magenta (red), yellow toner cartridge life has been reached, black&white printing can be done by specifying “Mono”. See “Printing using monochrome (black and white)” in “Advanced” for black&white print.

Ballpark indicator of image drum (CMYK) replacement

When 3 pages of A4 size documents are printed at once with transverse feed with 1-side printing, it will reach its service life after printing about 40,000 copies.

When one page is printed at once, it will reach its service life when about half the number of copies are printed.

Printing quality will decline after 1 year has passed from opening the package. Therefore, prepare a new image drum.

Fuser unit

When A4 size documents are printed with long edge feed with 1-side printing, it will reach its service life after printing about 150,000 copies.

Belt unit

When 3 pages of A4 size documents are printed at once with long edge feed with 1-side printing, it will reach its service life after printing about 150,000 copies.

When one page is printed at once, it will reach its service life when about half the number of copies are printed.

Waste toner box

When 3 pages of A4 size documents with print density* of 5% are printed at once with transverse feed with 1-side printing, it will reach its service life after printing about 40,000 copies.

Feed roller

Feed roller is attached to each tray.

It will reach its service life after printing about 120,000 pages for each tray.

*: Print density is the proportion of area having toner on printable area of 1 page.

Memo

The printable pages/lifespan is for reference. The actual printable pages/lifespan might decrease depending on the print

environment such as the details of the document to be printed, usage status, powering ON/OFF, and adjustment operation at the time of cover opening/closing.

Replacing the toner cartridge may be required after the image drum is replaced when the toner cartridge level is low. It is

recommended to get a new toner cartridge along with a new image drum when the toner cartridge level is low.

- 60 -

Replacing consumables and maintenance unit

Only for C941/C942/ES9541/ES9542/Pro9541/Pro9542



Toner cartridge (Clear/White)

When A4 size documents with print density

of 5% are printed with long edge feed with continues

1-side printing, the printable pages is about 10,000.

Printing quality will decline after about 1 year from opening the package. Therefore, prepare a new toner cartridge.

Even if the white, clear toner cartridge life has been reached, cyan (blue), magenta (red), yellow and black print can be done.

In addition, even if the cyan (blue), magenta (red), yellow toner cartridge life has been reached, spot color printing can be done by specifying [Print only with spot color].

See “Printing using white toner only” in “Separate Volume Spot Color Guide” for spot color printing.

Image drum (Clear/White)

When 3 pages of A4 size documents are printed at once with long edge feed with 1-sided printing, it will reach its service life after printing about 20,000 pages. When one page is printed at once, the lifespan will be reached with approximately half of printable pages.

Printing quality will decline after about 1 year from opening the package. Therefore, prepare a new image drum.

*1: Clear can be used only with C941/ES9541/Pro9541. *2: Print density is the proportion of area having toner on printable area of 1 page.

Memo

The printable pages/lifespan is for reference. The actual printable pages/lifespan might decrease depending on the print

environment such as the details of the document to be printed, usage status, powering ON/OFF, and adjustment operation at the time of cover opening/closing.

Replacing the toner cartridge may be required after the image drum is replaced when the toner cartridge level is low. It is

recommended to get a new toner cartridge along with a new image drum when the toner cartridge level is low.

Maintenance

IndexTroubleshooting

- 61 -

Replacing consumables and maintenance unit

When the replacement period is approaching

When the replacement period of consumables and maintenance unit approaches, the following message

will appear and the <ATTENTION> lamp will blink.

Replace consumables and maintenance unit when "Replace ..." appears in the message.

Pressing the [HELP] button in the operation panel will display the replacement procedure. You can easily replace the consumables and maintenance unit according to the guidance. For details, refer to

“Operating the Help screen”(P.13).

Maintenance

Item

Toner Cartridge

IndexTroubleshooting

Image Drum

Fuser Unit

Belt Unit

Waste Toner Box

Feed Roller - - -

Message displayed on the liquid crystal panel

When the replacement

period approaches

[COLOR]*1 Toner Low

[COLOR] Life

Fuser Unit Near Life

Belt Unit Near Life

Waste Toner Near Full

Image Drum Near

When it is time for

replacement

Install Toner [COLOR]*1 Please see HELP for details

Install [COLOR] Drum Image Drum Life Please see HELP for details

Install New Fuser Unit Fuser Unit Life Please see HELP for details

Install New Belt Unit Belt Unit Life Please see HELP for details

Install New Waste Toner Box Waste Toner Full Please see HELP for details

New Image

Number

of pages

that can

be printed

when the

replacement

approaches

time for

replacement

Yellow, magenta, cyan, black, clear About 1,000 pages White: About 700 pages

About 1,000 pages

About 10,000 pages

About 5,000 pages

period

to the

Reference

pages

page 64

page 66

page 75

page 69

page 77

page 79

*1: [COLOR]: Either of Only Yellow, Only Magenta, Only Cyan, Only Black, White, and Clear will be displayed.

(White will appear only for C941/C942/ES9541/ES9542/Pro9541/Pro9542, and Clear will appear only for C941/ES9541/

Pro9541.)

When the message “Waste Toner Full” appears, printing operation is stopped temporarily. In this case, you can continue

*2:

printing about 200 sheets by opening and closing the front cover. And then, printing will be stopped.

- 62 -

Replacing toner cartridges

CAUTION

Replacing consumables and maintenance unit

ARNIN

● Do not throw toner or toner cartridge

● Do not store toner cartridge in a place

● Do not clean up spilled toner using an

● There are high temperature parts in side

● Keep the toner cartridge away from

in re. Toner may y off causing burn

injury.

with re. It may catch re causing re

damage or burn injury.

electric vacuum cleaner. When spilled toner is cleaned up using an electric vacuum cleaner, there is a risk of

re due to sparks from the electrical

contacts. Wipe off and remove the toner

spilled on the oor using a wet cloth.

the device. Do not touch near the places with "Caution: High Temperature" label. It may cause burn injury.

children's reach. If children drink toner cartridge by mistake, immediately consult the physician.

● Store the used toner cartridge in a bag such that toner does not scatter.

● If toner is spilled on the oor, wipe it up carefully using a damp cloth to prevent the toner from scattering.

Maintenance

IndexTroubleshooting

● When toner is inhaled, gargle with a lot of water and move the person to a place with fresh air. Consult a physician as necessary.

● When there is toner on skin of hands etc., wash it off with liquid soap.

● It toner gets into eyes, immediately wash it off with a large quantity of water. Consult a physician as necessary.

● When toner is swallowed, dilute the toner by drinking a large quantity of water. Consult a physician as necessary.

● When solving paper jam or when replacing toner cartridge, take care that your hands and clothes are not stained with toner. When there is toner on skin of hands etc., wash it off with liquid soap.

● When clothes are stained with toner, wash them in cold water. Heating it such as washing in hot water will dye the toner on clothes, and it stains may not remove easily.

● Do not disassemble or forcibly open the toner cartridge. It may scatter toner, because of which people may inhale it, and it may stain clothes and hand.

- 63 -

Replacing consumables and maintenance unit

Types of toner cartridge



Following toner cartridges can be used with this printer.

Item Remarks

Toner Cartridge Black

Toner Cartridge Yellow

Toner Cartridge Magenta

Toner Cartridge Cyan

Toner cartridge Spot Color White Only for C941/C942/ES9541/ES9542/Pro9541/Pro9542.

Toner cartridge Spot Color Clear Only for C941/ES9541/Pro9541.

Maintenance

Can not be used in C911/C931/ES9411/ES9431/Pro9431.

Can not be used in C911/C931/C942/ES9411/ES9431/ES9542/ Pro9431/Pro9542.

Replacing Toner Cartridges

Example) In the case of Toner Cartridge Cyan (C)

Prepare a new toner cartridge.

IndexTroubleshooting

Open the toner replacement cover.

Remove the toner cartridge.

Check the position of toner cartridge to

be replaced, via the label letters and color.

- 64 -

Replacing consumables and maintenance unit

Remove the new toner cartridge from

its packaging, and shake it vertically and horizontally.

Note

Do not drop the toner cartridge or tap it on the

oor. Doing so may damage the cartridge.

Check the position of the slot that has

a label stuck on it with the same letters

and colors, and rmly push the toner

cartridge in as far as it will go.

Close the toner replacement cover.

Memo

Even after replacing the toner cartridge, if the

[Replace Toner] message does not disappear, it is possible that the toner cartridge is not installed

rmly. Reinstall it correctly.

If Error709 appears after replacing the toner

cartridge, refer to “If replace consumables

messages are displayed”(P.38) of this manual.

Please support recycling of the used

toner cartridges.

Memo

When disposing of the used toner cartridge in

unavoidable circumstance, put it in a plastic bag, and ensure to dispose according to the instructions provided by the local municipality.

Maintenance

IndexTroubleshooting

- 65 -

Replacing consumables and maintenance unit

Replacing Image Drums

Maintenance

IndexTroubleshooting

Types of image drum



Image drums that can be used with this printer are as follows.

Item Remarks

Image Drum Black

Image Drum Yellow

Image Drum Magenta

Image Drum Cyan

Image drum Spot Color White Only for C941/C942/ES9541/ES9542/Pro9541/Pro9542.

Can not be used in C911/C931/ES9411/ES9431/Pro9431.

Image drum Spot Color Clear Only for C941/ES9541/Pro9541.

Can not be used in C911/C931/C942/ES9411/ES9431/ES9542/ Pro9431/Pro9542.

Note

Do not expose the image drum to direct sunlight or strong light (About 1,500 lux or more). Do not keep it for more than 5

minutes even under room lighting.

Replacing Image Drums

Example) In the case of Image Drum (K)

Check the position of replacement

image drum via the label letters and color.

Prepare the new image drum.

Open the front cover.

- 66 -

Replacing consumables and maintenance unit

Gently lift the handle (blue) upwards,

and remove the image drum taking care that your hand does not touch the drum on the lower side (green cylindrical section).

Note

Be careful not to touch or scratch the image drum

(green cylinder).

Remove the new image drum from its

packaging.

Maintenance

IndexTroubleshooting

Remove the stopper (orange).

- 67 -

Replacing consumables and maintenance unit

Maintenance

IndexTroubleshooting

Align the image drum and arrow label (red) of printer, slowly insert in the slot taking care that your hand does not touch the photoreceptor (green) below,

and rmly push it inside.

Close the front cover.

Memo

If Error709 appears after replacing the image drum,

refer to “If replace consumables messages are

displayed”(P.38) of this manual.

Please support recycling of the used

image drums.

Memo

When disposing of the used image drums in

unavoidable circumstances, put it in a plastic bag, and ensure to dispose according to the instructions provided by the local municipality.

Note

Be careful not to touch or scratch the image drum

(green cylinder).

- 68 -

Replacing consumables and maintenance unit

Replacing belt units and transfer roller units

Prepare a new belt unit.

New transfer roller unit is supplied with the new belt unit in the same package.

[Replacing the Belt Unit]



Open the front cover.

Remove the waste toner box.

Maintenance

IndexTroubleshooting

- 69 -

Replacing consumables and maintenance unit

Maintenance

IndexTroubleshooting

Push the center lever (blue) to the right.

Rotate the belt unit left/right lock lever knob (blue) to the left, and push the lock lever towards yourself.

Hold the handle and pull out the belt

unit, hold the left-right label part (blue) and remove the belt unit.

6.6 kg

Note

Do not touch the belt surface or damage the belt.

Removing the belt unit will expose all image drums

to light. For preventing the optical deterioration of image drums, do not leave them as it is for more than 5 minutes after removing the belt unit. When leaving for more than 5 minutes, close the front cover, or remove all image drums and store them in a safe place where they are not directly

exposed to sunlight or uorescent light.

- 70 -

Never place the removed belt unit in a vertical

direction.

Ensure that waste toner does not spill when

removing the belt unit.

Take out the new belt unit.

Replacing consumables and maintenance unit

Unpack the new belt unit from its

packaging.

Note

Do not touch the belt surface or damage the belt.

Maintenance

Align the new belt unit and arrow label

(red) of the printer, set it in the printer,

and rmly press it inside.

IndexTroubleshooting

- 71 -

Replacing consumables and maintenance unit

Maintenance

IndexTroubleshooting

Raise the belt unit left/right lock lever, rotate the lock lever knob (blue) to the right and lock it.

Return the center lever (blue) to the left.

Set the waste toner box on the printer.

Close the front cover.

- 72 -

Replacing consumables and maintenance unit

CAUTION

[Replacing the transfer roller unit]



Lift opener ( ) of the exit unit, and pull

out the exit unit.

Hold the transfer roller unit's label part

(blue) and remove it.

Remove transfer roller unit.

Maintenance

IndexTroubleshooting

Pull up both tips of the transfer roller

unit's lock lever (blue).

Possible to get burned.

Do not touch the fuser unit because it is hot.

Set the new transfer roller unit to the

exit unit.

Note

Do not touch the sponge of the transfer roller unit.

- 73 -

Replacing consumables and maintenance unit

Push both sides of the lock lever (blue)

down.

Maintenance

Put the exit unit back into the printer.

IndexTroubleshooting

Please support recycling of the used belt unit and transfer roller unit.

Memo

When disposing of the used belt unit and transfer

roller unit in uunavoidable circumstances, put them in a plastic bag, and ensure to dispose according to the instructions provided by the local municipality.

- 74 -

Replacing fuser units

CAUTION

Replacing consumables and maintenance unit

Replacing fuser units

Prepare a new fuser unit.

Lift opener ( ) of the exit unit, and pull

out the exit unit.

Pull up the fuser unit's lock lever (blue).

Possible to get burned.

Do not touch the fuser unit because it is hot.

Hold the fuser unit's handle with both

hands and remove it.

Maintenance

IndexTroubleshooting

- 75 -

Remove the new fuser unit from its

packaging.

Replacing consumables and maintenance unit

Hold the new fuser unit handle with

both hands, and set it to the exit unit.

Maintenance

Push down the fuser unit's lock lever

(blue).

IndexTroubleshooting

Put the exit unit back into the printer.

Please support recycling of the used

fuser units.

Memo

When disposing of the used fuser unit in

unavoidable circumstances, put it in a plastic bag, and ensure to dispose according to the instructions provided by the local municipality.

- 76 -

Replacing waste toner boxes

Replacing consumables and maintenance unit

Replacing waste toner boxes

Prepare a new waste toner box.

Open the front cover.

Remove the waste toner box from the

printer.

Maintenance

IndexTroubleshooting

- 77 -

Remove the new waste toner box from

its packaging.

Replacing consumables and maintenance unit

Install the new waste toner box to the

printer.

Maintenance

IndexTroubleshooting

Close the front cover.

Please support recycling of the used

toner boxes.

Memo

When disposing of the used waste toner box in

unavoidable circumstances, put it in a plastic bag, and ensure to dispose according to the instructions provided by the local municipality.

- 78 -

Replacing paper feed rollers

Replacing consumables and maintenance unit

Rough guide of replacing paper feed rollers is about 120,000 pages for each tray.

Replacing paper feed rollers of Tray 1 to Tray 5

There are three types of paper feed rollers.

Center is white

With gear

Center is blue

Items to be prepared: Paper feed rollers - 3 nos.

Example) When replacing the paper feed roller of Tray 1

Remove wrist watch, bracelet, etc.

Press and hold the power switch for

approximately 1s to switch off the power supply.

Check that the operation panel is

completely turned off, and then switch off the main power supply.

Pull out Tray 1.

Maintenance

IndexTroubleshooting

- 79 -

Replacing consumables and maintenance unit

Maintenance

IndexTroubleshooting

While expanding the claws of feed rollers ( them from the axial.

Memo

If the feed roller is not visible due to darkness,

open the tray side cover (“Removing paper from the

vicinity of Tray Side Cover”(P.24)).

) in outside direction, remove

Similarly, remove the remaining two

paper feed rollers (

, ).

- 80 -

Replacing consumables and maintenance unit

Insert the new feed rollers ( ) in the

axial, and rmly insert up to inside.

Similarly, insert the remaining two

paper feed rollers (

, ).

Maintenance

IndexTroubleshooting

- 81 -

Check that no paper feed roller is

missing.

Replacing consumables and maintenance unit

Maintenance

IndexTroubleshooting

Install Tray 1.

Switch on the main power supply, press the power supply switch and start the printer.

Please support recycling of the used paper feed rollers.

Memo

When disposing of the used paper feed rollers in

unavoidable circumstances, put them in a plastic bag, and ensure to dispose according to the instructions provided by the local municipality.

Replacing the paper feed rollers and separator of MultiPurpose Tray

There are three types of paper feed rollers.

Center is white

With gear

Tip of the center is black

Items to be prepared: Paper feed rollers 2 nos., separation roller 1 no., separator 1 no.

Remove wrist watch, bracelet, etc.

Press and hold the power switch for

approximately 1s to switch off the power supply.

- 82 -

Check that the operation panel is

completely turned off, and then switch off the main power supply.

Replacing consumables and maintenance unit

Lift the opener ( ), and open the right

side cover.

While expanding the claws of feed

rollers ( them from the axial.

) in outside direction, remove

Maintenance

IndexTroubleshooting

- 83 -

Replacing consumables and maintenance unit

Maintenance

IndexTroubleshooting

Lift Section A, release the claws in the

direction shown in gure, and remove

the paper feed rollers (

Pinch the claws (two places) and

remove the separator ( Section B, and remove the separation rollers (

). Open

- 84 -

Replacing consumables and maintenance unit

Firmly insert the new separation roller

) along the notch, and mount the

( separator ( ).

Insert the new feed rollers ( ) in the

axial, and rmly insert up to inside

while rotating them.

Check that no paper feed roller is

missing.

Close the right side cover.

Maintenance

IndexTroubleshooting

Insert the new paper feed rollers ( ),

and rmly insert up to inside along the

notch.

Switch on the main power supply, press

the power supply switch and start the printer.

- 85 -

Replacing consumables and maintenance unit

Please support recycling of the used

paper feed rollers.

Maintenance

IndexTroubleshooting

Memo

When disposing of the used paper feed rollers in

unavoidable circumstances, put them in a plastic bag, and ensure to dispose according to the instructions provided by the local municipality.

- 86 -

Device Maintenance

This section describes the cleaning method of the respective part of the device.

Cleaning device surfaces

Items to be prepared: Water or neutral washing agent, soft and dry cotton cloth 2 pieces

Note

Do not use Benzene or thinner as it may damage plastic

parts and coating.

Only use water or neutral washing agent.

It is not necessary to oil the device. Do not oil it.

Press and hold the power switch for

approximately 1s to switch off the power supply.

Cleaning LED heads

Clean LED head when there are stripes or white creases on the print, or when letters are blurred.

Clean LED head when there is vertical white line on the output paper or when the images disappear vertically, or when the border of the letters is blurred. When LED head is unclean, it may cause paper jam.

Note

Do not use methyl alcohol or thinner. It may damage the

LED head.

Do not expose the image drum to direct sunlight or strong

light (About 1,500 lux or more). Do not keep it for more than 5 minutes even under room lighting.

Items to be prepared: Soft tissue paper

Press and hold the power switch for

approximately 1s to switch off the power supply.

Maintenance

IndexTroubleshooting

Check that the operation panel is

completely turned off, and then switch off the main power supply.

Take water or neutral washing agent on

one piece of cotton cloth, and wipe with thoroughly squeezed cloth.

Furthermore, wipe off with another dry cotton cloth.

Check that the operation panel is

completely turned off, and then switch off the main power supply.

- 87 -

Device Maintenance

Maintenance

IndexTroubleshooting

Open the front cover.

Gently lift the handle (blue) upwards, and remove the photoreceptor from the lower side taking care that your hand does not touch the drum on the lower side (green cylindrical section).

Note

Ensure not to touch or damage the drum.

- 88 -

Device Maintenance

Remove the waste toner box from the

printer.

Push the center lever (blue) to the

right.

Rotate the belt unit left/right lock lever

knob (blue) to the left, and push the lock lever towards yourself.

Maintenance

IndexTroubleshooting

- 89 -

Device Maintenance

Maintenance

Hold the handle and pull out the belt unit, hold the left-right label part (blue) and remove the belt unit.

Never place the belt units that have you removed in

a vertical direction.

Gently wipe the surface of LED head

with a soft tissue paper.

IndexTroubleshooting

6.6 kg

Note

Do not touch the belt surface or damage the belt.

Removing the belt unit will expose all image drums

exposed to sunlight or uorescent light.

Ensure that waste toner does not spill when

removing the belt unit.

Note

Agents such as methyl alcohol and thinner will

damage the LED head, so please do not use them.

- 90 -

Device Maintenance

Set the belt unit to the printer, and

push it in rmly.

Return the center lever (blue) to the left.

Maintenance

Set the waste toner box on the printer.

IndexTroubleshooting

Raise the belt unit left/right lock lever,

rotate the lock lever knob (blue) to the right and lock it.

- 91 -

Device Maintenance

Maintenance

IndexTroubleshooting

Align the image drum and arrow label (red) of printer, slowly insert in the slot taking care that your hand does not touch the photoreceptor (green) below,

and rmly push it inside.

Close the front cover.

Note

Ensure not to touch or damage the drum

Similarly, install all image drums.

- 92 -

Device Maintenance

Cleaning feed rollers

When paper jam occurs frequently, clean the paper feed rollers.

Items to be prepared: Soft cotton cloth dipped in water

Cleaning paper feed rollers of Tray 1 to Tray 5

Example) When cleaning the paper feed roller of Tray 1

Remove wrist watch, bracelet, etc.

Press and hold the power switch for

approximately 1s to switch off the power supply.

Pull out Tray 1.

Wipe off the dirt on paper feed rollers (3

places) with the moist soft cloth.

Memo

When it is difcult to wipe, open the tray side cover,

and clean it from the tray side cover side.

Maintenance

IndexTroubleshooting

Check that the operation panel is

completely turned off, and then switch off the main power supply.

Install Tray 1.

Switch on the main power supply, press

the power supply switch and start the printer.

- 93 -

Device Maintenance

Cleaning the paper feed rollers of Multi-Purpose Tray

Press and hold the power switch for

approximately 1s to switch off the power supply.

Maintenance

Check that the operation panel is

IndexTroubleshooting

completely turned off, and then switch off the main power supply.

Lift the opener ( ), and open the right

side cover.

- 94 -

Device Maintenance

While expanding the claws of feed

rollers ( them from the axial.

) in outside direction, remove

Wipe off the dirt on paper feed rollers (2

places) and on separator with the moist soft cloth.

Insert the feed rollers ( ) in the axial,

and rmly insert up to inside while

rotating them.

Close the right side cover.

Maintenance

IndexTroubleshooting

Wipe off the dirt on paper feed rollers

) with the moist soft cloth.

(

Lift Section A.

Switch on the main power supply, press

the power supply switch and start the printer.

- 95 -

Device Maintenance

CAUTION

Cleaning the Transfer Roller Unit and Paper Transfer Path

If the front or rear edge of the output paper becomes dirty frequently, clean the transfer roller unit and paper transfer path.

Periodical cleaning prevents dirt and stains.

Note

Be careful not to touch sponge of the transfer roller unit

Maintenance

IndexTroubleshooting

or damage the transfer roller unit.

Do not use water or such solvents as neutral detergent

and methyl alcohol. It may damage the transfer roller.

Please prepare a soft tissue paper

Press and hold the power switch for

about 1 second to turn off the power.

Lift the opener ( ) of the exit unit, and

pull out the exit unit.

Check that the control panel has been

turned off completely, and then turn off the main power.

Raise the lock lever (blue) of the fuser

unit.

There is a risk of injury.

Do not touch the fuser unit because it is hot.

- 96 -

Device Maintenance

Remove the fuser unit by holding its

handle with your hands.

Raise the lock levers (blue) at both

ends of the transfer roller unit.

Wipe the dirt off the paper transfer path

with a soft tissue paper.

Wipe the dirt off the transfer roller unit

with a soft tissue paper.

Note

Be careful not to touch sponge of the transfer roller

unit or damage the transfer roller unit.

Maintenance

IndexTroubleshooting

Remove the transfer roller unit by

holding its label part (blue).

Set the transfer roller unit to the exit

unit.

Note

Do not touch sponge of the transfer roller unit.

- 97 -

Device Maintenance

Maintenance

IndexTroubleshooting

Push down the lock levers (blue) at both ends.

Set the fuser unit to the label position of the exit unit by holding its handle with your hands.

Put the exit unit back into the printer.

Push down the lock lever (blue) of the

fuser unit.

- 98 -

Cleaning the Pinch Roller

Device Maintenance

If foreign matter is found on the pinch roller, remove the dirt with a soft cloth or tissue paper.

Sticking foreign matter can be easily removed if cleaned after printing.

Maintenance

IndexTroubleshooting

- 99 -

Moving and shipping the device

CAUTION

Moving and shipping the device

This section describes about transporting or moving the device.

Moving the device

There is a risk of injury.

The printer weighs approx. 98 kg* for C911/C931/

ES9411/ES9431/Pro9431 models, and approx. 111 Kg* for C941/C942/ES9541/ES9542/Pro9541/ Pro9542 model. Therefore, make sure to use at

Maintenance

least 4 people when lifting.

*: Includes consumables such as the image drum and toner

cartridge, etc.

Press and hold the power switch for

approx. 1s. Check that the operation panel is completely switched off after

IndexTroubleshooting

that, and switch off the main power supply by pulling the main power supply switch to the OFF (O) side.

Remove all cables.

Power supply cable and earthing cord

LAN cable/USB cable

Remove paper from the tray.

Life the device with 4 people, and move

it to the destination.

Shipping the device

There is a risk of injury.

The printer weighs approx. 98 kg* for C911/C931/ ES9411/ES9431/Pro9431 models, and approx. 111 Kg* for C941/C942/ES9541/ES9542/Pro9541/ Pro9542 model. Therefore, make sure to use at least 4 people when lifting.

*: Includes consumables such as the image drum and toner

cartridge, etc.

Note

Because image drums (green parts) can easily get

damaged, handle with adequate care.

Do not expose the image drum to direct sunlight or strong

light (About 1,500 lux or more). Do not keep it for more than 5 minutes even under room lighting.

Press and hold the power switch for

approx. 1s. Check that the operation panel is completely switched off after that, and switch off the main power supply by pulling the main power supply switch to the OFF (O) side.

Remove all cables.

Power supply cable and earthing cord

LAN cable/USB cable

Remove paper from the tray.

Remove all toner cartridges.

- 100 -

Oki C911, C931, C941, C942, ES9411 User's Manual Troubleshooting/Daily Maintenance Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Reading the Manual

Symbols

Keys, Buttons, and Symbols

Illustrations

Screens

Inscriptions

Troubleshooting

Troubleshooting solutions procedure

Paper jams

Checking messages (if a paper jam occurs)

Removing jammed paper

If paper messages are displayed

If replace consumables messages are displayed

If other messages are displayed

Printing Troubles

Unable to print

Printer driver malfunctions

Print quality is poor

Paper feed is poor

When image disturbance occurs

Adjusting the print result

Maintenance

Replacing consumables and maintenance unit

Consumables and maintenance unit service life

When the replacement period is approaching

Replacing toner cartridges

Replacing Image Drums

Replacing belt units and transfer roller units

Replacing fuser units

Replacing waste toner boxes

Replacing paper feed rollers

Device Maintenance

Cleaning device surfaces

Cleaning LED heads

Cleaning feed rollers

Cleaning the Transfer Roller Unit and Paper Transfer Path

Cleaning the Pinch Roller

Moving and shipping the device

Moving the device

Shipping the device