Oki MC-860 / CX2633MFP Service & Troubleshooting Manual

Below you will find brief information for MC-860 / CX2633MFP. This guide provides maintenance procedures, service menus, troubleshooting for print quality and paper feeding issues, and error code resolutions. It also covers cleaning procedures for various components like the LED lens array, pickup roller, ADF, and scanner, along with detailed descriptions for entering and navigating the service menu.

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MC-860 / CX2633MFP

Service & Troubleshooting Guide

Disclaimer

Every effort has been made to ensure that the information in this document is complete, accurate, and up to date. The manufacturer assumes no responsibility for the results of errors beyond its control. While all reasonable efforts have been made to make this document accurate and helpful as possible, we make no warranty of any kind, expressed or implied, as to the accuracy or completeness of the information contained herein. For the most up-to-date service information available, visit our website, www.okidata.com

Chapter 1 Maintenance Procedures – Printer / ADF / Scanner

1.1 Exterior Cleaning

1.2 Cleaning the LED lens array

1.3 Cleaning the Pickup Roller

1.4 Cleaning inside the Printer

1.5 Cleaning the ADF and Scanner

Chapter 2 Service Menus and Adjustments

2.1 How to Enter the Service Menu

2.2 Service Maintenance Menu Overview

2.3 System Maintenance

2.5 Scanner Maintenance

2.6 Fax Maintenance

2.7 Printer Maintenance

2.7.1 Switch Scan Test

2.7.2 Motor & Clutch Test

2.7.3 Test Print - Monitoring Printer Environmental Conditions

2.7.4 Color Registration Error Correction Test

2.7.5 Density Error Correction Test

2.7.6 Consumable Item Counter Display

2.7.7 Factory/Shipping Mode Switching

2.7.8 Engine Parameter Setting – Fuse Check Method

2.8 Initialization Functions

Chapter 3 Troubleshooting Print Quality

3.1 Print Quality Problems Overview

3.2 Using New Consumable Units for Testing Purposes

3.3 Things to observe when analyzing Test Pages

3.4 Print-Quality Troubleshooting

Chapter 4 Troubleshooting Paper Feeding

4.1 Troubleshooting Paper Feed

4.1.1 Paper Feed Sensor Details

4.1.2 Jam Removal Procedure

Chapter 5 Troubleshooting Error Codes

Chapter 1 Maintenance Procedures – Printer

Clean inside and outside of the printer with a clean dry cleaning cloth and small vacuum cleaner as required.

Note!

Be careful not to touch the image drum terminals, the LED lens array and the LED head connectors.

Turn OFF the power of the MFP.

Select “Setup” then “Shutdown”. Follow the on screen prompts. When shutdown is complete, turn off the power switch on the printer.

Clean the surface of MFP.

Note!

Do not use any liquid other than water and neutral detergent.

The MFP requires no lubrication.

Do not lubricate the unit.

Clean the surface of the unit with a clean

cloth wrung out using clean water or

neutral detergent.

Clean surface of the unit with soft clean cloth.

1.2 Cleaning the LED lens array

•

Pull the document table lock lever to the front to release the lock, and raise the document table.

Document Table

•

Press the top cover button and open the top cover.

Document Table Lock Lever

Top Cover Button

Top Cover

Caution

Failure to proceed with caution may result in burn injury. The fuser unit gets very hot. Do not touch the surface of the fuser unit.

•

Wipe the lens surface (at the four positions) of the LED head with soft tissue paper gently and lightly.

LED Heads

Lens Surface of the LED Head

1.3 Cleaning the Pickup Roller

Note !

Clean the pickup roller for tray 2 and tray 3 in the same procedure.

For the MP tray, clean the pickup roller in the same procedure for the feed roller only.

(Pad is not used.)

•

Pull out the tray.

•

Clean the feeder roller (large) and the feeder roller (small) with a clean cloth wrung out using clean water

Feed Roller (Large)

Feed Roller (Small)

•

Clean the pad portion of the tray with a clean cloth wrung out using clean water

Tray 1

Pad

Roller

Tray 2, Tray 3

1.4 Cleaning inside the Printer.

Toner can adhere to the metal shaft that is located in between the fuser and the cyan image drum cartridge depending on the print pattern. Perform cleaning of the inside of the MFP if toner has adhered to the metal shaft.

•

Turn OFF the power of the MFP.

•

Pull the document table lock lever to the front to release the lock, and raise the document table. Then Press the top cover button and open the top cover.

•

Remove the four image drum cartridges from the MFP.

Drum Cartridges

•

Cover the removed image drum cartridge with a black paper.

Note!

Use caution when handling the image drums. Be very careful not to expose the image drum to direct sun light or intense light. Do not leave it out under normal illumination even indoors for 5 minutes or longer

•

Remove the fuser unit from the MFP.

Caution Failure to proceed with caution may result in burn injury. The fuser unit gets very hot. Do not touch the surface of the fuser unit.

•

Raise the fuser unit lock lever (shown in blue) in the direction shown by the arrow.

•

Hold the handle of the fuser unit and remove it.

Fuser Unit Lock Lever (Blue)

Fuser Handle

•

Remove the Transfer Belt unit from the MFP.

Transfer Belt

Retaining

Screws (Blue)

Transfer Belt

•

Thoroughly clean the interior of the printer and re-install the transfer belt, fuser, and drum units. Inspect all units before re-installation.

1.5 Cleaning the ADF and Scanner

Clean the paper path of the ADF once every month or more in order to maintain high print quality and to transport the documents smoothly.

•

Open the document cover OPEN lever and open the document cover.

Document Cover Open Lever

Document Cover

•

Clean the document transport roller.

Clean surface of the roller with a clean cloth wrung out using clean water or neutral detergent.

Note!

Clean the entire surface of the roller by rotating the roller by hand.

(Some types of rollers can rotate in one direction only.)

•

Open the inside cover.

Rollers

Inside Cover

Dial

•

Clean the document retainer roller.

Dial

Inside top cover

Clean surface of the roller with a clean cloth wrung out using clean water or neutral detergent.

Document

Retainer Roller

•

Open the document table cover.

Document

Retaining Pad

Platen Glass

Scanning Glass

Clean the surface of the document retaining pad, the platen Glass and the scanning glass with a clean cloth wrung out using clean water or neutral detergent.

Chapter 2 Service Menus and Adjustments

The service function is to be used for the purposes of MFP maintenance by the experienced

Maintenance / service engineer, and are not open to general users. The respective items of the service function are contained in the service menu.

2.1 How Enter the Service Menu

Enter the service menu by the following operation.

1. The password entry screen is displayed when the special operation of the hardware keys is operated while an MFP is running. The MFP enters this condition waiting for password entry.

2. When the password that is entered by maintenance/service engineer matches the specified password, the service menu is displayed.

Special Operation of the Hardware Keys

The operation procedure to display the password entry screen of the service menu is described as follows.

1. To display the password entry screen, press the [SETUP] key while an MFP is running.

2. Press the numeric keys in the order of [#] [1] [9] [3] [7].

3. The password entry screen is displayed.

Password Entry Screen

Value Default Display Condition

Enter the password that is required to enter the service menu. (OOOOOO) (Six zeros).

Note!

Data entry will appear as

Asterisks.

Caution!

The Password can be changed by the “Change Password” menu of the “System

Maintenance” menu. It is highly recommended that you

DO NOT

change this password. In the event that the changed password is lost, the main control board and hard disk drive would need replacement.

This is not a covered expense under any machine warranty and you will incur the cost of the replacement components.

Operation required to exit the Service Mode Screen

In order to complete operations of the service menu, the [Close] button that is displayed on the service menu top screen should be pressed.

Note!

If any setting change requires reboot of the MFP and the [Close] button is pressed, the MFP will enter the normal operating condition after the MFP reboots.

2.2 Service Maintenance Menu – Overview

System Maintenance Screen Panel Maintenance Screen Copy Maintenance Screen

Scan Maintenance Screen Fax Maintenance Screen Printer Maintenance Screen

Service Maintenance Menu Structure is shown below.

Level 1 Level 2

System

Maintenance

(See Section 2.3)

OKIUSER

Format HDD

Format Flash ROM

Menu Reset

All Reset

Test Print Menu

Change Password

Panel

Maintenance

LED Test

LCD Test

OP Key Test

(See Section 2.4)

Copy Maintenance

Color Copy

Scan

Retrieve Shading Data

Maintenance

Clean RADF Roller

Adjust Scan Position

(See Section 2.5)

Level 3

New Password

Verify Password

FBS

ADF (Front)

ADF (Back)

Level 4

Side Reg.

Front Edge

Side Reg.

Front Edge

Back Edge

Side Reg.

Front Edge

Back Edge

Reboot

Process

When Closed

When Executed

None

When Executed

When Closed

None

When Closed

None

Fax Maintenance

(See Section 2.6)

Printer

Maintenance

(See Section 2.7)

Country Code

Pulse Make Ratio

MF(Tone) Duration

Calling Timer

Attenuator

MF Attenuator

Line Test

Personality

Peak Control

Echo support

Modem transmission speed

Echo support

Modem transmission speed

ON period

Off Period

Relay

Tonal

DTFM

IBM 5577

IBM PPR III XL

EPSON FX

HP-GL/2

Engine Diag. Mode

Supplementary Description of “Reboot Process”

When Closed

None

When Closed

When Closed Reboot starts automatically when the [Close] button is pressed on the top screen of the service menu.

Reboot when executed Reboot starts automatically when the function is executed.

None Reboot is not executed and the screen moves into the normal operating condition when the [Close] button is pressed on the top screen of the service menu.

2.3 System Maintenance

OKIUSER

Sets the MFP for the Destination Country.

Note!

Should always be set for ODA

(North America). Settings other than ODA may result in erratic MFP operation. When the screen exits the service menu after this setting is changed, the MFP reboots automatically.

Format HDD

Initialization of the HDD.

When [Format. HDD] is selected, the following confirmation screen is displayed.

When [Yes] is selected, the screen exits the menu and initialization of the HDD starts.

For details of the HDD initialization, refer to Section 2.8.

Format Flash ROM

Initialization of the Flash ROM.

When [Format Flash ROM] is selected, the following confirmation screen is displayed.

When [Yes] is selected, the screen exits the menu and initialization of the resident mounted (on-board) Flash device starts.

For details of the Flash ROM initialization, refer to Section 2.8.

Menu Reset (Administrator Password Reset)

Returns the administrator password to the factory shipment setting (factory default) value.

When [Menu reset] is selected, the following confirmation screen is displayed. When

[Yes] is selected, the administrator password is reset to the factory shipment setting

(factory default) value.

For details of the administrator password reset, refer to Section 2.8.

All Reset

Returns the contents of the EEPROM, FLASH ROM and HDD to the factory shipment setting (factory default) value. When [All Reset] is selected, the following confirmation screen is displayed. When [Yes] is selected, the screen exits the menu, and contents of the

EEPROM, FLASH ROM and HDD are reset to the factory shipment setting (factory default) value

For details of the reset to the factory shipment setting, refer to Section 2.8.

Test Print Menu

Selects to display or not to display the menu [REPORT] – [PRINT] – [ID Check Pattern] item, and [Engine Status] item. When [Disable] is selected in this setting, the [ID Check

Pattern] and [Engine Status] items are not displayed all the time. When the screen exits the service menu after this setting is changed, the MFP reboots automatically.

Change Password

Note!

The Password can be changed by the “Change Password” menu of the “System

Maintenance” menu. It is highly recommended that you

DO NOT

change this password.

In the event that the changed password is lost, the main control board and hard disk drive would need replacement. This is not a covered expense under any machine warranty and you will incur the cost of the replacement components.

2.4 Panel Maintenance

LED Test

All LED lamps are illuminated to check if any lamp is burned out or not.

Every time when the [SETUP] key is pressed, all LED lamps are turned ON and OFF.

Operating procedure

LED lamp = OFF Red LED lamp = ON

Green LED lamp = ON All LED lamps = ON

When the [Close] button is pressed, the screen returns to the panel maintenance menu.

LCD Test

Displays the test pattern on the LCD in order to check if there are inactive pixels on the

LCD.

Operating procedure

The following three kinds of test patterns can be displayed. To select the test patterns, press the [SETUP] key.

Press the [SETUP] key.

Press the key.

[SETUP]

Control Panel Key Test

Checks if the MFP responds normally when the hardware key and the software key on the control panel is pressed, by observing the LCD screen if the pressed key is displayed or not on the LCD screen. This test aims at checking all of the keys. Therefore, all keys should be pressed in the specified order

in order to check that all keys have been pressed.

Operating procedure

When this test is selected, the panel key test screen is displayed as shown below. Press all of the keys in the specified order as shown in the picture below.

When a key is pressed in the specified order, the following messages are displayed.

When a key is pressed in a wrong order, the following messages are displayed.

2.5 Scanner Maintenance

Shading Data Loading

Shading data of FBS and that of RADF (both-side copy model only) are loaded. This item should be executed whenever any of the following items is performed.

• When the scanner lamp is replaced *

• When the mirror carriage adjustment is performed *

• When the scanner Main PCB is replaced

Operating procedure

When this item is selected Confirm that the RADF unit is closed. the following screen is displayed.

Then press the [Start] button.

Scanning Roller Cleaning

Operating procedure

When this item is selected, the following screen is displayed.

Scan Position Adjustment

Side registration adjustment - The separate setting items are prepared for FBS, ADF

(front side) and ADF (back side) independently.

Setting for Flat Bed Scanning (FBS)

Perform adjustment so that the scan start position in the horizontal scanning direction during

FBS Scanning

stays within the reference value. Adjustment in increments of 1 item (5/600 dpi = 0.2117 mm) is possible in this setting. When a value is added in the negative (-) direction, the scan image on a PC moves to the right. When a value is added in the positive (+) direction, the scan image on a PC moves to the left.

Setting for ADF (front side)

Perform adjustment so that the scan start position in the horizontal scanning direction during ADF front side scanning stays within the reference value. Adjustment in increments of 1 item (5/600 dpi = 0.2117 mm) is possible in this setting. When a value is added in the negative (-) direction, the scan image on a PC moves to the left. When a value is added in the positive (+) direction, the scan image on a PC moves to the right.

Setting for ADF (rear side)

Perform adjustment so that the scan start position in the horizontal scanning direction during ADF rear side scanning stays within the reference value. Adjustment in increments of 1 item (5/600 dpi = 0.2117 mm) is possible in this setting. When a value is added in the negative (-) direction, the scan image on a PC moves to the left. When a value is added in the positive (+) direction, the scan image on a PC moves to the right.

Top End Position Adjustment

Perform adjustment so that the scan start position in the vertical scanning direction during

FBS

scanning stays within the reference value. If shade is scanned at the top end of a document, make adjustment in the positive direction. If deficiency occurs at the top end of a document, make adjustment in the negative direction. Adjustment in increments of 1 item (0.1408 mm) is possible in this setting. When a value is added in the negative (-) direction, the scan image on a PC moves down. When a value is added in the positive (+) direction, the scan image on a PC moves up.

Setting for ADF (front side)

Perform adjustment so that the scan start position in the vertical scanning direction during

ADF front side scanning stays within the reference value. If shade is scanned at the top end of a document, make adjustment in the positive direction. If deficiency occurs at the top end of a document, make adjustment in the negative direction. Adjustment in increments of 1 item (0.0619 mm) is possible in this setting. When a value is added in the negative (-) direction, the scan image on a PC moves down. When a value is added in the positive (+) direction, the scan image on a PC moves up.

Setting for ADF (back side)

Perform adjustment so that the scan start position in the vertical scanning direction during

ADF rear side scanning stays within the reference value. If shade is scanned at the top end of a document, make adjustment in the positive direction. If deficiency occurs at the top end of a document, make adjustment in the negative direction. Adjustment in increments of 1 item (0.0619 mm) is possible in this setting. When a value is added in the negative (-) direction, the scan image on a PC moves down. When a value is added in the positive (+) direction, the scan image on a PC moves up.

Back End Position Adjustment

Precaution

The rear end position adjustment should be executed after the top end position adjustment is completed. In addition, scanning is stopped before the rear end is reached if amount of the specified scanning lines are scanned in the copy mode and scan mode even though the rear end position adjustment is performed.

Setting for ADF (front side)

Perform adjustment so that the rear end scan position in the vertical scanning direction during ADF front side scanning stays within the reference value. If shade at the rear end of document is scanned, perform adjustment in the negative (-) direction. If deficiency occurs at the rear end of a document, make adjustment in the negative direction.

Adjustment in increments of 1 item (0.0619 mm) is possible in this setting. However, adjustment should be performed in increments of 16 items (1 mm) as a guide line due to document running at an angle.

Setting for ADF (back side)

Perform adjustment so that the rear end scan position in the vertical scanning direction during ADF rear side scanning stays within the reference value. If shade at the rear end of document is scanned, perform adjustment in the negative (-) direction. If deficiency occurs at the rear end of a document, make adjustment in the negative direction.

Mirror Carriage Mode

This item sets Operable/Inoperable of the mirror carriage movement.

During transportation and installation of the MFP, this setting should be changed.

How to enter the mirror carriage communication mode

When the menus of [SETUP] – [Admin Setup] – [User Install] – [Mirror carriage mode] are selected, the following screen is displayed.

Before transportation of the MFP, select [Yes] to start movement of the mirror carriage to the specified position. When movement of the mirror carriage is complete, the following screen is displayed.

Tighten the screws at the locations as specified in the illustration, and press the [Close] button. When the mirror carriage is locked in the specified position, select the menus

[SETUP] – [Shutdown] to execute the shutdown operation. Then turn OFF the power.

How to release the mirror carriage mode

When the MFP remains in the mirror carriage mode, the following standby screen is displayed.

Remove the screws at the locations specified in the illustration, and press the [Cancel] button. The following screen is displayed.

Confirm that the mirror carriage Fixing screws are removed. Then select [Yes] to release the mirror carriage mode so that the mirror carriage is returned to the normal operating condition.

2.6 Fax Maintenance

Country Code

Select the country in which the MFP is going to be installed.

(ODA)

North America

In this setting, any country code can be selected regardless of the

OKIUSER

setting.

When the screen exits the service menu after this setting is changed, the MFP reboots automatically.

Note!

If any country code that is not the country of the MFP installation is selected, it can infringe on regulations and laws of the respective countries. Be careful of this point.

Tone for Echo

TX (During Transmission)

When set to Enable

• DIS once

• EP tone addition during V29 send *2:

• Wait time between DIS – DCS *3:

Enable

1000 ms

When set to Disable

• DIS once

• EP tone addition during V29 send *2:

• Wait time between DIS – DCS *3:

Disable

0 ms

This setting is effective during all communications of direct dialing and Abbr. dialing.

DIS ignore once *1:

During the overseas communication, the DIS signal can be ignored once in order to restart the echo suppressor function that has been stopped by the CED signal. The MFP responds against the second DIS signal and sends out the DCS signal. With this setting, the MFP can send out the DCS signal under a good line condition with less echo. This setting is used in the case when the communication error such as T.1.1 occurs due to adverse effect of echo during the overseas communication.

EP tone addition during V29 send *2:

During the overseas send, reception of the training signal by the destination machine can be ensured by adding the EP tone before the sending the training signal to avoid line delay.

The EP tone of 0.5 seconds is added to the training signal of 9600/7200 bits/s +

TCF/training + image information.

The EP tone of 0.5 seconds at 1700 Hz can be destroyed by the group delay of communication line so that the head portion of the training signal is damaged. In such a case, reception of the training signal by the destination machine can be ensured by adding the EP tone before sending the training signal.

Note!

Some types of fax machines cannot receive the training signal 9600/7200 bits/s +

TCF with the EP tone. You should be aware of this type of fax machine.

Wait time between DIS – DCS *3:

Time before the DCS signal send start after the DIS signal reception end.

RX (During Reception)

When set to

Enable

Switching time between CED – DIS *4: 1000 ms

When set to

Disable

Switching time between CED – DIS *4: 75 ms

Switching time between CED – DIS *4:

When the CED signal at 2100 Hz is sent out during reception of overseas communication, the echo suppression stops so that the line condition becomes inferior with much echo.

As the countermeasure against the trouble, an interval is inserted after the echo suppressor is re-started (echo suppressor re-starts after muting of 0.5 seconds) before sending out the DIS signal upon \completion of the CED signal send-out by creating a muted period of time. The international telephone line uses the four-wire system in which signals are sent to the destination machine via the two-wire system –> four-wire system –

> two-wire system. The international telephone switchboard is equipped with the echo prevention system (special switch circuit that prevents echo) called echo suppressor.

When it detects the tone signal of 2100 Hz, operation of the echo suppressor is stopped temporarily.

Modem Transmission Speed

TX (During Transmission)

33.6 Kbps

28.8 Kbps

14.4 Kbps

9.6 Kbps

Default = 33.6 Kbps

4.8 Kbps

Sets the initial value of the modem transmission speed during fax send. This setting is effective during all communications of direct dialing and Abbr. dialing. Communication at 14.4 kbps (V.17) is performed when the menus [Admin Setup] – [User Install] –

[Super G3] is set to OFF and this setting is set to “33.6 kbps”, “28.8 kbps”. When this setting is “14.4 kbps (V.17)”, “9.6 kbps (V.29)”, “4.8 kbps (V.27ter)”, communication with this setting is performed regardless of the “Super G3” setting.

RX (During reception)

33.6 Kbps

28.8 Kbps

14.4 Kbps

9.6 Kbps

Default = 33.6 Kbps

4.8 Kbps

Sets the initial value of the modem transmission speed during fax receive.

Communication at 14.4 kbps (V.17) is performed when the menus [Admin Setup] – [User

Install] – [Super G3] is set to OFF and this setting is set to “33.6 kbps”, “28.8 kbps”.

When this setting is “14.4 kbps (V.17)”, “9.6 kbps (V.29)”, “4.8 kbps (V.27ter)”, communication with this setting is performed regardless of the “Super G3” setting.

Pulse Make Ratio

Sets the make ratio of DP (10 pps) during call.

Default 40%

Range Default 80ms

Sets the ON period of MF (Tone) Duration send. When the setting value is “0”, the MFP runs at the initial value of each country. When the set value is except "0", the set value operates at 1 to 255m second.

OFF Period Range

0 - 1 ms to 255 ms

Default 70ms

Sets the OFF period of MF (Tone) Duration send. When the setting value is “0”, the MFP runs at the initial value of each country. When the set value is except "0", the set value operates at 1 to 255m second.

Calling Timer Range

0 - 1 second to 255 seconds

Default 55 seconds

Sets the Calling Timer. When the setting value is “0”, the MFP runs at the initial value of each country. When any value other than “0” is set, the Calling Timer can be selected in the range of 1 to 255 mm.

Attenuator Range

0 dB to -15 dB

Sets the Attenuator. It can be set in units of 1 dB. When the “Country code” is set to

“Japan”, it can be set in the range of 8 to 15 dB.

MF Attenuator Range 0 dB to -15 dB Default 70dB

Sets the MF Attenuator. It can be set in units of 1 dB.

Line Test

When “Line Test” is selected, the following screen is displayed. Select the desired test item to be implemented.

Relay Test

Implements the relay ON/OFF test.

Relay test procedure

Press the [Relay] button on the "Line Test” screen.

Select the desired relay that is going to receive the ON/OFF test.

When the [Close] button is pressed, the screen returns to the “Line Test” screen.

When the [Reset] key is pressed, screen returns to the top screen of the service menu.

Tonal Send Test

Tonal test procedure

Press the [Tonal] button on the "Line Test” screen.

Select a signal to test.

When the [Stop] key is pressed, signal send is interrupted.

When the [Close] button is pressed, the screen returns to the “Line test” screen.

When the [Reset] key is pressed, screen returns to the top screen of the service menu.

DTMF Test

Signals of the frequencies that are used by the push-button telephone can be selected for the send test.

DTMF test procedure

Press the [DTMF] button on the "Line Test” screen.

Select a frequency to send.

When the [Stop] key is pressed, signal send is interrupted.

When the [Close] button is pressed, the screen returns to the “Line test” screen.

When the [Reset] key is pressed, screen returns to the top screen of the service menu.

2.7 Printer Maintenance

Personality

Default setting of the PDL language that is supported by the respective destination specification can be changed. The PDL language that has been set to” Disable” by the

PDL setting item will not be displayed as the choices on the following menu: [SETUP]-

[Admin Setup] - [Print Setup] . At the same time, when the print data of the PDL language that has been set to “Disable” is received, a message “”Invalid data is received” is displayed and the received data is discarded.

IBM 5577

IBM PPR III XL

Settings: Enable /Disable

Default: Disable

Default: Enable

EPSON

Peak Power Control

Set whether or not to support the low peak power control. When the screen exits the service menu after this setting is changed, the MFP reboots automatically.

Settings: Low / Normal

Default: Normal

Engine Diagnostic Mode (Self-Diagnostic)

How to enter self-diagnostic mode (Level 1)

1. From the service menu, select [Printer Maintenance] and [Engine Diag. Mode] to enter the self-diagnostic mode.

2. When the screen enters the self-diagnostic mode (Level 1), the "DIAGNOSTIC

MODE” is displayed.

00.06.06

= PU Firmware Version

S-Mode = Shipping Mode

Press either (2) key or (8) key to move to the respective self-diagnostic items.

(Menu item scrolls when either

(2) key or

(8) key

is pressed.)

Press the

(6) key

to execute the selected test. Exit the test by pressing the

(4) key.

Level 1 Diagnostic Screens

Item

Switch Scan Test

(See section 2.7.1)

Motor Clutch Test

(See section 2.7.2)

Executing Test Print

(See section 2.7.3)

Color Registration

Correction Test

(See section 2.7.4)

Density Correction Test

(See section 2.7.5)

Consumable Item Counter

Display

(See section 2.7.6)

Consumable Item

Accumulative Counter

Display

(See section 2.7.6)

Factory/Shipping

Mode Switching

(See section 2.7.7)

FUSE Status Check

(See section 2.7.7)

Engine Parameter Setting

(See section 2.7.8)

LED Head Serial Number

Display

(Not Used)

SENSOR SETTING

LED HEAD DATA

Self-Diagnostic Menu Adjustment Contents

SWITCH SCAN

MOTOR&CLTCH TEST

TEST PRINT

REG ADJUST TEST

DENS ADJ TEST

CONSUMABLE

STATUS

Input sensor and switch

Check

Motor and clutch operational test

PU internal test pattern print and printer environmental conditions

Color registration error correction system, normal or defective

Density error correction system, normal or defective

Consumable items, consumption status display

PRINTER STATUS Consumable items, accumulative consumption status display

FACTORY MODE

SET

Factory mode or Shipping mode switching

Status display of respective

Fuses

Sets valid or invalid of error detection using various sensors

Display of LED head serial

Number

2.7.1 Switch Scan Test

This self-diagnostic menu is used to check the input sensors and switches of the print engine.

1. Enter the self-diagnostic mode

(Level 1)

and press the

(2) key

(8) key

until

"SWITCH SCAN”

is displayed in the top of the screen. Press the

(6) key

to execute.

(The

(2) key

increments the test item and

(8) key

decrements the test item.)

HUM_TEMP_DEN

BELT_T

ID UP/DOWN

RFID COLOR*1

F-RL FI BL DT-DC

T1 PE_PNE_CVO

T1 CASETTE SIZE*2

T2 PE_PNE_CVO_CA

T2 HOP_LF_FED

T2 CASETTE SIZE*2

T3 PE_PNE_CVO_CA

T3 HOP_LF_FED

T3 CASETTE SIZE*2

DUP IN_RA_FNT

DUP SK_CVO

Paper R oute: PU

Switch Scan Test

Display Detail on Printer LCD

Location 1

Sensor Display

Tested

Entrance

Condition

H - Absent

Location 2

Sensor Display

Tested

Entrance

Condition

H - Absent

Toner Sensor

CVO UP_LU_FU

REG L/R_OHP_WG

HT THERMISTER

Sensor 1

Toner K Sensor

Cover Upper

Color registration error sensor L

Fuser thermistor,

Upper sensor

L – Present

H - Off

L - On

H - Closed

L – Open

AD value:

***H

AD value:

***H

Sensor 2

Toner Y

Sensor

Color registration error sensor R

Fuser thermistor,

Lower

L – Present

H - Off

L - On

AD value:

***H

AD value:

***H

Humidity sensor

Belt thermistor

AD value:

***H

AD value:

***H

Temperature sensor

AD value:

***H

RFID antenna K

Fuser release

sensor

Tray 1 paper end sensor

Size setting switch 1

Tray 2 paper end sensor

Size setting switch 1

Tray 3 paper end sensor

Size setting switch 1

Duplex input sensor

Duplex bottom sensor

UID:

***H

H: ON

L: OFF

H: absent

L: present

Port level

H, L

H: absent

L: present

Port level

H, L

H: absent

L: present

Port level

H, L

H: absent

L: present

H: absent

L: present

RFID antenna Y

Fuse entrance sensor

Size setting switch 2

Duplex rear sensor

Duplex cover sensor

UID:

***H

H: ON

L: OFF

Port level

H, L

Port level

H, L

Port level

H, L

H: absent

L: present

H: Close

L: Open

Location 3

Sensor Display

Tested

Write

Condition

H - Absent

Sensor

Toner M

Sensor

L – Present

H - Off

L - On

Location 4

Sensor Display

Tested

Unload

Condition

H - Absent

(Exit) Sensor

Toner C

Sensor

L – Present

H - Off

L – On

Fuser thermistor,

Upper sensor, side

Density sensor (K)

RFID antenna M

Size setting switch 3

AD value:

***H

AD value:

***H

UID:

***H

Port level

H, L

Tray 2 entrance sensor

Size setting switch 3

H: absent

L: present

Port level

H, L

Tray 3 entrance sensor

Size setting switch 3

Duplex front sensor

H: absent

L: present

Port level

H, L

H: absent

L: present

Heater frame thermistor

Density sensor

(YMC)

Up Down sensor

RFID antenna C

Size setting switch 4

AD value:

***H

AD value:

***H

H: Up

L: Down

UID:

***H

Port level

H, L

Port level

H, L

Port level

H, L

2.7.2 Motor & Clutch Test

This self-diagnostic menu is used to test the motors and clutches of the print engine.

Enter the self-diagnostic mode

(Level 1)

and press the

(2) key

(8)

key until

[MOTOR & CLUTCH TEST] is displayed in the top of the screen.

Press the

(6) key

to execute.

The

(2) key

increments the test item and

(8) key

decrements the test item.

Press the

(2) key

or the

(8) key

until the item that corresponds to the unit which is going to be tested is displayed in the bottom of the screen.

When the

(6) key

is pressed, the test is started. The unit name starts blinking and the corresponding unit runs for 10 seconds.

Note!

After running for 10 seconds, screen returns to the item 2 state. When the corresponding switch is pressed, the test program restarts.

• The clutch solenoid repeats ON and OFF during the normal print job. (For the model in which the independent drive is not possible due to mechanism structure, the motor will run at the same time.) *”ID UP/DOWN” continues running until the (#) key is pressed.

• When the desired motor is selected and the [ENTER] key is pressed for an extended time (2 seconds), it keeps running.

When the (#) key is pressed, the corresponding unit stops running.

(The corresponding unit is kept displayed on the screen.)

Repeat items 2 to 4 as required.

When the (4) key is pressed, the screen exits the test.

(Screen returns to the item 1 condition.)

Unit Name Display

ID MOTOR

BELT MOTOR

FUSER MOTOR

FUSER MTR REV

FUSER_RLS

REGIST MOTOR

T1 HOPPING MOTOR

FRONT MOTOR

REGIST SHUTTER

EXIT SOLENOID

DUPLEX MOTOR

DUPLEX CLUTCH

T2 HOPPING MOTOR

T2 FEED CLUTCH

T3 HOPPING MOTOR

T3 FEED CLUTCH

ID UP/DOWN

LV FAN TEST

FUSER FAN TEST

FUSER2 FAN TEST

DUPLEX FAN TEST

PS FAN TEST

Drive Restriction Conditions

Drives when all of the IDs (K/Y/M/C) are removed.

If option installed

TOP/FRONT covers, closed condition

PAGE

COLOR

DUPLEX

2.7.3 Test Print

This self-diagnostic menu is used to print the test pattern contained in the PU. Other test patterns are contained in the controller.

Enter the self-diagnostic mode (Level 1) and press the (2) key or (8) key until

[TEST PRINT] is displayed in the top of the screen.

Press the

(6) key

to execute.

The

(2) key

increments the test item and

(8) key

decrements the test item.

The setting items that are applicable to the test print only are displayed in the lower column of display window. Press the

(2) key

or the

(8) key

until the corresponding item is displayed. (When the setting value for each item is not required

[Default setting] , advance to item 2.)

Keep pressing the

(2) key

or the

(8) key

, and press the

(6) key

at the item that is set in item 2. The setup item is displayed in the upper column, and the setting value is displayed in the lower column of the display window.

(The setting value that is displayed last is applied.)

Pressing the (4) key determines the setting value, and the screen returns to item 2.)

Repeat item 3 as required.

PRINT EXECUTE

TEST PATTERN

TEST CASSETTE

MONO SPEED

TRAY1

TRAY2

MPT Tray

Value Function

Pressing the (4) key starts printing/Pressing the (#) key ends printing (in page unit).

0 = White paper print

1 to 7 Refer to next page. (Pattern print)

8 to 15 = White paper print

Select the paper feed source.

If TRAY2 is not installed, TRAY2 is not displayed.

0000 Setting the number of test prints.

OFF

2 PAGES STACK

OFF

1PAGES STACK

LOW

HIGH

Selecting color or monochrome print.

ON is specified, ON/OFF setting for each color appears.

Duplex print is executed with two sheets stack.

Duplex print OFF select

Duplex print is executed with single sheet stack.

Selecting monochrome print speed.

LOW: 30ppm

HIGH: 34ppm(A4),33ppm(Letter)

Print Patterns

Pattern 1

Pattern 4

Pattern 7

Pattern 2 Pattern 3

Pattern 5 Pattern 6

Note!

If the solid print data (Pattern 7) that is contained in the local print function is used for test print with 100% setting of each color, it causes offset. To prevent offset, select the print setting of each color so that the number of colors to be printed at the same time should be limited to 2 colors or less.

Monitoring Printer Environmental Conditions

The following printer environmental conditions can be monitored during generation of test prints.

The following messages are displayed during test print.

P *** = Number of test prints (unit: sheet)

W*** =

Print wait time (unit: sheet)

Pressing the

(2) key

switches the display. When the

(#) key is pressed, the screen exits the test. (Screen returns to the item 1 condition.)

T =*** = Environment temperature measurement value [unit: °C]

U =*** = Upper heater temperature measurement value. [unit: °C] [###] = target temperature [unit: °C]

H =***% = Environment humidity measurement value [unit: %]

L = *** = Lower thermistor measurement value. [unit: °C] [###] = Lower thermistor AD value [unit: HEX]

Pressing the (2) key switches the display. When the (#) key is pressed, the screen exits the test. (Screen returns to the item 1 condition.)

KTR, YTR, MTR and CTR are the transfer voltage setting values for each color. (measured in KV)

Pressing the (2) key switches the display. When the (#) key is pressed, the screen exits the test. (Screen returns to the item 1 condition.)

KR, YR, MR, CR are transfer roller resistance values for each color. [measured in μ A]

Pressing the (2) key switches the display. When the (#) key is pressed, the screen exits the test. (Screen returns to the item 1 condition.)

ETMP: Hopping motor standard speed correction parameter (Environment temperature) [unit: DEC]

UTMP: Fuser motor standard speed correction parameter (Fuser target temperature) [unit: DEC]

REG: Hopping motor standard speed timer value (I/O setting value) [unit: HEX]

EXT: Fuser motor standard speed timer value (I/O setting value) [unit: HEX]

Pressing the

(2) key

switches the display. When the

(#) key is pressed, the screen exits the test. (Screen returns to the item 1 condition.)

KID, YID, MID and CID are the standard speed timer values for each ID motor (I/O setting value) [unit: HEX]

Pressing the (2) key switches the display. When the (#) key is pressed, the screen exits the test. (Screen returns to the item 1 condition.)

BELT: Belt motor standard speed timer value (I/O setting value) [unit: HEX]

FRM: [***] = Frame thermistor read-out AD value [unit: HEX] ( xxx ) = Frame temperature [unit: °C]

Pressing the

(2) key

switches the display. When the

(#) key is pressed, the screen exits the test. (Screen returns to the item 1 condition.)

DB: Develop voltage setup table ID number [unit: HEX]

Pressing the

(2) key

switches the display. When the

(#) key is pressed, the screen exits the test. (Screen returns to the item 1 condition.)

TR1: Transfer voltage parameter VTR1 table ID number [unit: HEX]

TR2: Transfer voltage parameter VTR2 table ID number [unit: HEX]

Pressing the

(2) key

switches the display. When the

(#) key is pressed, the screen exits the test. (Screen returns to the item 1 condition.)

The message is displayed but does not function.

Pressing the

(2) key

switches the display. When the

(#) key is pressed, the screen exits the test. (Screen returns to the item 1 condition.)

2.7.4 Color Registration Error Correction Test

This self-diagnostic menu is used for adjustment and to investigate cause of the color registration error of the MFP.

Enter the self-diagnostic mode (Level 1) and press the

(2) key

(8) key

until

[TEST PRINT] is displayed in the top of the screen.

When the

(6) key

is pressed, the following message is displayed.

Press the (2) key or (8) key until the desired item is displayed.

When the

(6) key

is pressed, test of the item that is being displayed on the panel is implemented.

<< When REG ADJ EXECUTE is executed >>

• The color registration correction test is implemented. (The [ON LINE] lamp blinks.)

• When the test is complete, the test result (OK or error name) is displayed in the upper column of the display window and

**** RESULT

is displayed in the lower column of the display window.

When the

(2) key

is pressed, test results are incremented and displayed in order.

When the

(8) key

is pressed, test results are decremented and displayed in order.

When the (4) key is pressed, screen returns to the item 2 status.

• When the (#) key is pressed while the test in progress, the test is interrupted (the

[ON LINE]

lamp lights) and screen returns to the item 2 status.

<< REG ADJ RESULT is executed >>

The key operations are the same as those above.

<< When BLT REFLECT TEST is executed >>

• The color registration error correction belt reflection test is implemented. (The

[ON LINE]

lamp blinks.)

• When the test is complete, the test result (OK or error name) is displayed in the upper column of the display window and **** RESULT is displayed in the lower column of the display window.

The key operations are the same as those above.

<< When

BLT REFLECT RSLT

is executed >>

The key operations when

BLT REFLECT RSLT

is executed The key operations are the same as those above.

When the

(4) key

is pressed, the screen exits the test. (Screen returns to the item 1 condition.)

Color registration correction test items

Display Details

REG ADJ EXECUTE

Execution of color registration error correction

REG ADJ RESULT

BLT REFLECT TEST

BLT REFLECT RSLT

Referring to the result of color registration error correction

Execution of color registration error correction belt reflectance Good/Bad

Judgment

Referring to the result of color registration error correction belt reflectance

Good/Bad judgment

2.7.5 Density Error Correction Test

This self-diagnostic menu is used to test the density error correction function of the MFP.

Enter the self-diagnostic mode

(Level 1)

and press the

(2) key

(8) key

until

[TEST PRINT]

is displayed in the top of the screen.

When the

(6) key

is pressed, the following message is displayed.

Press the (2) key or (8) key until the desired item is displayed.

When the (6) key is pressed, test of the item that is being displayed on the panel is implemented.

<< When DENS ADJ EXECUTE is executed >>

• The Density error correction test is executed. (The

[ON LINE]

lamp blinks.)

• When the test is complete, the test result (OK or error name) is displayed in the upper column of the display window and

**** RESULT

is displayed in the lower column of the display window.

When the

(2) key

is pressed, test results are incremented and displayed in order.

When the

(8) key

is pressed, test results are decremented and displayed in order.

When the (4) key is pressed, screen returns to the item 2 status.

• When the

(#) key

is pressed while the test in progress, the test is interrupted (the

•

[ON LINE]

lamp lights) and screen returns to the item 2 status.

<< When

DENS ADJ RESULT

is executed >>

The key operations are the same as those above.

<< When

DENS ADJ PAR-SET

is executed >>

The message is displayed but does not function.

AUTO CALIBRATION

is executed >>

• Automatic setting of the density sensor sensitivity correction value is executed.

(The

[ON LINE]

lamp blinks.)

• When the test is complete, the test result (OK or error name) is displayed in the upper column of the display window and

**** RESULT

is displayed in the lower column of the display window.

When the

(4) key

is pressed, screen returns to the item 2 status.

When the

(#) key

is pressed while the test in progress, the test is interrupted (the [ON

LINE] lamp lights) and screen returns to the item2 status.

When the

(4) key

is pressed, the screen exits the test. (Screen returns to the item 1 condition.)

Display Details

DENS ADJ EXECUTE

DENS ADJ PAR-SET

DENS ADJ RESULT

AUTO CALIBRATION

Execution of density correction

The message is displayed but does not function.

Referring to the result of density correction

Automatic setting of density sensor sensitivity correction value

2.7.6 Consumable Item Counter Display

This self-diagnostic menu is used to display the consumption status of the consumable items.

1. Enter the self-diagnostic mode and press the (2) key or (8) key until

[CONSUMABLE STATUS]

is displayed on the screen.

Press the

(6) key

to execute.

The

(2) key

increments the test item and

(8) key decrements the test item.

2. When the

(2) key

(8) key

is pressed, consumption status of the consumable items are displayed in order. Pressing the (*) key or the (#) key is invalid.

When the

(4) key

is pressed, the screen exits the test. (Screen returns to the item 1 condition.)

Display

K-ID UNIT

Y-ID UNIT

M-ID UNIT

C-ID UNIT

FUSER UNIT

TR BELT UNIT

K-TONER (FULL)

Y-TONER (FULL)

M-TONER (FULL)

C-TONER (FULL)

M-WASTE TNR CNT

C-WASTE TNR CNT

K-STC MODE CNT

Y-STC MODE CNT

M-STC MODE CNT

C-STC MODE CNT

K OVER RIDE CNT

Unit of Measure

Images

Prints

Images

Percentage

Times

Details

Number of rotations up to the present time since the new ID

UNIT for each color has been installed is displayed after the data is converted to the equivalent value of A4, 3Page/

Job.

Number of sheets up to the present time since the new

FUSER unit has been installed.

Number of sheets up to the present time since the new Belt

UNIT has been installed.

Amount of consumption of the respective color toners are displayed.

Amount of waste toner is displayed.

* When it reaches 32 times, the

Waste toner FULL is issued.

Number of printed character dot counts for the respective toners are displayed. (Accumulative value since the MFP has started running.)

Accumulative number of times of the toner cartridges for respective colors are displayed.

Printed Sheets Counter Display

This self-diagnostic menu is used to display the number of printed sheets status of the MFP.

Enter the self-diagnostic mode and press the

(2) key

(8) key

until

[PRINTER STATUS]

is displayed on the screen.

Press the

(6) key

to execute.

The

(2) key

increments the test item and

(8) key decrements the test item.

When the (2) key or (8) key is pressed, number status of the printed sheets are displayed in order. Pressing the (*) key or the (#) key is invalid.

When the

(4) key

is pressed, the screen exits the test. (Screen returns to the item 1 condition.)

Display

K – IMPRESSIONS

Y – IMPRESSIONS

M – IMPRESSIONS

C – IMPRESSIONS

TOTAL SHEET CNT

Unit of Measure

Images

Details

Number of printed sheets for each color are displayed.

Prints Total number of printed sheets are displayed.

2.7.7 Factory/Shipping Mode Switching

This self-diagnostic menu is used to switch the PU PCB from the Factor mode to the

Shipping mode.

Enter the self-diagnostic mode (Level 1) and press the (2) key or (8) key until the following message is displayed.

When the (6) key is pressed, the following message is displayed.

Press the

(2) key

(8) key

until the desired item (refer to the table below) is displayed.

While desired item to set is being displayed, press the (6) key to enable operator to select the setting value.

While desired item to set is being displayed, press the (6) key for an extended time (3 seconds) to register the display value in

EEPROM

. Screen returns to the item 2 condition.

When the (4) key is pressed, the screen exits the test. (Screen returns to the item 1 condition.)

Upper Display

FACTORY MODE

FUSE INTACT

Note! Indicates whether fuse is

INTACT or BLOWN.

Lower Display

FACTORY MODE

SHIPPING MODE

BELT UNIT ******

FUSE UNIT ******

K-ID UNIT ******

Y-ID UNIT ******

M-ID UNIT ******

C-ID UNIT ******

Function

Sets up the Factory work mode.

This is a production mode.

Note!

The unit should always be set for Shipping mode or erratic operation may result.

Sets up the Shipping mode for normal operation.

Checks the FUSE status of the transfer belt unit.

Checks the FUSE status of the fuser.

Checks the FUSE status of the

K-ID unit.

Checks the FUSE status of the

Y-ID unit.

Checks the FUSE status of the

M-ID unit.

Checks the FUSE status of the

C-ID unit.

2.7.8 Engine Parameter Setting

This self-diagnostic menu is used to set Enable or Disable of error detections using various sensors.

This menu enables service engineer to

Disable

Enable

the error detection temporarily

When use of this menu is completed, be sure to return the setting values to the default .

Enter the self-diagnostic mode

(Level 1)

and press the

(2) key

(8) key

until the following message is displayed.

When the (6) key is pressed, the following message is displayed.

Press the (2) key or (8) key until the desired item (refer to the table below) is displayed.

When the (6) key is pressed, the setting values that are shown in the lower column of the display window become selectable.

Pressing the (2) key increments the setting value. Pressing the (8) key decrements the setting value.

While the desired item to set is being displayed, press the (6) key for an extended time

(3 seconds) to register the displayed value in EEPROM. Screen returns to the item 2 condition.

Press the (4) key (excluding the condition of item 4) to exit the menu. (Screen returns to the item 1 condition.)

TONER SENSOR

BELT UNIT

CHECK__ENABLE

ID UNIT CHECK

UP/DOWN SENSOR

REG ADJUST ERROR

DRUM OVER LIFE

DISABLE

Continuance

LED Head Serial Number Display

Not used for servicing the MFP at this time.

Fuse Check Method

Sets Enable/Disable of the toner sensor operation

Not to check

Sets Enable/Disable of the belt installation check job.

Sets Enable/Disable of the ID installation check job.

Sets Enable/Disable of detect sensor operation

Not to stop

Sets Enable/Disable of the error stop caused by the color registration error detected value. life

Not to prolong prolong the drum life life when it reaches the lifetime.

2.8 Initialization Functions

Items that can be initialized by the Administrator

The following table shows the setup items that can be initialized by administrator.

The gray colored items indicate that the data is stored in the CU side.

The white items indicate that the data is stored in the scanner unit side.

The items with the characters

“CL”

indicate that the registered data will be deleted when this function is executed.

The items with the characters

“FR” indicate that the data will be returned to the default setting when this function is executed.

Initialization Functions Admin Page 2

Initialization Functions Admin Page 3

*1 The group counter – Reset is confidential and menu is not open in FCS.

*4 When HDD Disable is set, only administrator can log on.

(Because the access control mode setup values is stored in Flash, but the user information is not stored in HDD.)

Items that can be initialized by the Service Engineer

The initialization operations that can be performed by service engineer are shown below.

The following table shows the setup items that can be initialized by the service engineer.

Descriptions regarding description in the table are added.

The gray colored items indicate that the data is stored in the CU side.

The white items indicate that the data is stored in the scanner unit side.

The items with the characters “CL” indicate that the registered data will be deleted when this function is executed.

The items with the characters “FR” indicate that the data will be returned to the default setting when this function is executed.

Initialization Functions Service Engineer Page 2

Initialization Functions Service Engineer Page 3

Initialization Functions Service Engineer Page 4

*2 Only the setups that change their initial values depending on destination or counter code are initialized.

*3. [Filename (standard)] and [E-mail edit fixed phrase] under the menus [Scanner function] - [E-mail setting] are initialized.

*4 When HDD Disable is set, only administrator can log on.

(Because the access control mode setup values is stored in Flash, but the user information is not stored in HDD.)

*5 When destination is changed from Japan (such as "JP1","JPOEM") to overseas (such as “ODA”), the portions in which Japanese language has been input are cleared. When the profile name is Japanese language, the parameters excluding character string are initialized at the same time.

Chapter 3 Troubleshooting Print Quality

3.1 Print Quality Problems Overview

Print-quality defects can be attributed to printer components, consumables, media, internal software, external software applications, and environmental conditions. To successfully troubleshoot print-quality problems, eliminate as many variables as possible.

The first step is to generate prints using printable pages embedded in the printer on paper from the Supported Media List. Use paper from a fresh, unopened ream that is acclimated to room temperature and humidity. If the print-quality defect is still present when printing on approved media, then investigate software applications and environmental conditions.

The printers use separate Imaging Units to develop a latent image for each color where the colors are combined on the Transfer Unit to form the final image. In most cases, print-quality defects are the result of one particular component in the print engine,

See the Repeating Defects chart

. When a single component of the Imaging Unit is causing a print quality defect, replace the Imaging Unit.

When analyzing a print-quality defect, first determine if the defect occurs in all colors or only one color and if it is repeating or random. Continuous defects in the process direction

, such as voids and lines, are the most difficult to diagnose. Inspect the visible surfaces of all rollers for obvious defects. If no defects are observed, replace the Imaging

Units, Transfer Unit, and Fuser one at a time until the defect is eliminated.

Defects Associated with Specific Printer Components

Some print-quality problems can be associated with specific assemblies, the most common problems and the associated assemblies are listed below. Also, refer to the printer’s Troubleshooting Print-Quality Problems pages or a specific print-quality troubleshooting procedure for more information.

Imaging Unit

• Streaks in Process Direction (in the direction of feed, parallel with paper travel)

• Banding in Scan Direction (across the page, perpendicular to paper travel)

• Uneven Density

• Voids

• Repeating Defects

• Mis-registration

Transfer Unit

• Toner on the back side of the printed page (simplex mode)

• Light Prints

• Repeating Defects

• Mis-registration - only when there is obvious damage to the belt.

Fuser

• Hot or Cold Offsetting

• Repeating Defects

• Dark Streaks in Process Direction

LED Head

• Streaks in the Process Direction

• Uneven Density in the Scan Direction

Test Prints

A variety of test prints are available to aid in determining the quality of output from the printer and to assist in troubleshooting. See sections 2.7.3 and 2.7.5 for details.

3.2 Using New Consumable Units for Testing Purposes

The MC-860 / CX2633 will allow you to utilize new consumable units for print quality diagnosis and troubleshooting purposes.

Note! When using new units (Drum, Transfer Belt, Fuser) to assist in troubleshooting, you should temporarily

set the printer to

“Factory Mode”

(See Section 2.7.8).

Setting to factory mode will allow you to use brand new units for testing purposes without cutting the fuse.

Caution! Be sure to reset the printer to “Shipping Mode”

when testing is complete.

Leaving the printer in Factory Mode may cause erratic operation of the MFP.

3.3 Things to observe when analyzing Test Pages

• Streaks in Process Direction (in the direction of feed, parallel with paper travel)

• Banding in Scan Direction (across the page, perpendicular to paper travel)

• Uneven Density

• Voids

• Repeating Defects

• Mis-registration

Note:

Consult the “Repeating Defect Spacing Chart” below.

Repeating Defects Spacing

Component

Imaging Drum 94.3 mm

Developer Roller

Charge Roller

Supply Roller

Fuser Belt

39.7 mm

37.7 mm

58.4 mm

125.5 mm

Heat Roller

Transfer Roller

87.7 mm

50.3 mm

Imaging Unit

Fuser

Transfer Unit

3.4 Print-Quality Troubleshooting

Light Prints in All Colors

The overall image density is too light in all colors. If the image is light in only one color, see "Light Print in Only One Color".

Initial Actions to Perform

■ Perform Initial Actions from Maintenance Procedures in Chapter 1 .

■ Verify the media used is supported by this printer.

■ Verify the media settings are correct at the Control Panel.

■ Print the ID Check Pattern (Reports – Print – ID Check Pattern) and

Demo page (Reports – Information – Demo Page) to see if it is an application problem.

■ Perform isolation Test Prints (Section 2.7.3).

■ Run the Density Error Correction Test in Section 2.7.5.

Areas of the Printer that Apply

■ Imaging Unit

■ LED Head

■ Transfer Unit

■ HVPS

■ PU Board

Troubleshooting Steps

1. Verify all packaging material has been removed form the toner cartridges

Resolution

2. Remove the Imaging Units and the Transfer Unit and check for toner contamination on the high voltage contacts. Are the contacts contaminated?

3. Are the LED Heads dirty? Clean the heads with a clean, lint-free cloth. Did this correct the problem?

4. Are the wiring harnesses on the LED Heads undamaged, properly routed and seated?

Yes – Go to Step 2

No - Remove packing material

Yes – Clean the contacts

No - Go to Step 3

Yes – Complete

No - Go to Step 4

5. Inspect the high-voltage wiring harness. Reseat the wiring Harness. Did this correct the problem?

Yes – Repair / Replace Harnesses

No - Go to Step 5

Yes – Complete

No - Replace in the following order:

Transfer Unit / Imaging Unit Sensor

Board / HVPS / PU Board

Light Prints in Only One Color

Only one color; yellow, magenta, cyan, or black, is too light on the printed image.

Initial Actions to Perform

■ Perform Initial Actions from Maintenance Procedures in Chapter 1 .

■ Print the ID Check Pattern (Reports – Print – ID Check Pattern) and

Demo page (Reports – Information – Demo Page)

■ Perform isolation Test Prints (Section 2.7.3).

■ Check that the Toner Cartridge pull strip is completely removed from the affected color.

■ Run the Density Error Correction Test in Section 2.7.5.

Areas of the Printer that Apply

■ Imaging Unit

■ LED Head

■ Transfer Unit

■ HVPS

■ PU Board

Troubleshooting Steps

1. Verify all packaging material has been removed form the toner cartridges

2. Print the 100% Solid Fill test print. Can the problem be isolated to one primary color?

Resolution

Yes – Go to Step 2

No - Remove packing material

Yes – Go to Step 3

3. Remove the Toner Cartridge and check for toner starvation in the Imaging Unit. Is there evidence of toner starvation

4. Remove the Imaging Units and the Transfer Unit and check for toner contamination on the high voltage contacts. Are the contacts contaminated?

5. Are the LED Heads dirty? Clean the heads with a clean, lint-free cloth. Did this correct the problem?

6. Swap the LED Head of the problem color with any other LED Head.

Print a Solid Fill Test Pattern. Has the problem moved with the LED Head?

7. Are the wiring harnesses on the LED Heads undamaged, properly routed and seated?

Yes – Replace the Toner Cartridge

No - Go to Step 4

Yes – Clean the contacts

No - Go to Step 5

Yes – Complete

No - Go to Step 6

Yes – Replace the LED Head

No - Go to Step 7

Yes – Reseat the wiring Harnesses

No - Replace in the following order:

Transfer Unit / LVPS / PU Board

Blank Prints

Initial Actions to Perform

■ Perform Initial Actions from Maintenance Procedures in Chapter 1 .

■ Perform isolation Test Prints (Section 2.7.3) to isolate the problem between the CU

Board and the PU Board.

Areas of the Printer that Apply

■ Imaging Unit

■ LED Head

■ PU Board

Troubleshooting Steps

1. Print a 100% Solid Fill Test Print. Is the entire test print blank?

2. Remove the Toner Cartridge and check for toner starvation inside the Imaging Unit. Is there evidence of toner starvation?

3. Are the LED Heads dirty? Clean the heads with a clean, lint-free cloth.

Did this correct the problem?

4. Are the wiring harnesses on the LED Heads undamaged, properly routed and seated?

5. Inspect the high-voltage wiring harness. Reseat the wiring Harness. Did this correct the problem?

Resolution

Yes – Go to Step 2

No - Have the customer check there application and printer settings.

Yes – Replace the Toner Cartridge.

No - Go to Step 3

Yes – Complete

No - Go to Step 4

Yes – Repair / Replace Harnesses

No - Go to Step 5

Yes – Complete

No - Replace in the following order:

Transfer Unit / LVPS / Imaging Unit

Sensor Board / HVPS / PU Board

Mottled or Splotchy Prints

The print image has a mottled appearance.

Note!

This defect is known to occur at low humidity, and when printing on heavy weight media.

Initial Actions to Perform

■ Perform Initial Actions from Maintenance Procedures in Chapter 1 .

■ Verify the media used is supported by this printer.

■ Verify the media settings are correct at the Control Panel.

■ Print the ID Check Pattern (Reports – Print – ID Check Pattern) and

Demo page (Reports – Information – Demo Page) to see if it is an application problem.

■ Perform isolation Test Prints (Section 2.7.3).

■ Run the Density Error Correction Test in Section 2.7.5.

Areas of the Printer that Apply

■ Imaging Unit

■ LED Head

■ HVPS

■ PU Board

Troubleshooting Steps

1. Ensure the media is approved and the Control Panel and driver settings match the loaded media. Try different media to verify consistent, reproducible problem.

Resolution

2. Print the configuration page to verify the operating environment.

NOTE: Low humidity, less than 20% relative humidity can cause mottling on prints.

3. Check for toner contamination on the high voltage contacts. Remove the Imaging Units and Transfer Unit. Is there contamination?

4. Check / Replace the Transfer Unit. Is the problem resolved?

Yes – Go to Step 2

No - Have the customer load approved media or correct the settings.

Yes – Go to Step 3

No - Advise customer regarding the printer’s environmental specifications.

Yes – Clean the contacts

No - Go to Step 4

Yes – Complete

No - Replace in the following order:

LVPS / HVPS / PU Board

Unexpected Colors

The colors produced by the printer are dramatically different from the color expected.

Initial Actions to Perform

■ Perform Initial Actions from Maintenance Procedures in Chapter 1 .

■ Verify the media used is supported by this printer.

■ Verify the media settings are correct at the Control Panel.

■ Print the ID Check Pattern (Reports – Print – ID Check Pattern) and

Demo page (Reports – Information – Demo Page) to see if it is an application problem.

■ Perform isolation Test Prints (Section 2.7.3).

■ Run the Density Error Correction Test in Section 2.7.5.

Areas of the Printer that Apply

■ Imaging Unit

■ HVPS

■ PU Board

Troubleshooting Steps

1. Print the ID Check Pattern / Demo Page and evaluate the colors. Are the colors on the test pages representative of what the customer expects?

Resolution

2. Print a configuration page to check the Imaging Unit life remaining. If the Imaging Unit is reaching it’s maximum image count, this can reduce print-quality.

3. Print the 100% Solid Fill Test pattern and check for any missing colors. Is the problem with a single color?

4. Is there debris or contamination on the LED Head?

5. Swap the LED Head of the problem color with any other LED Head. Print a Solid Fill Test

Pattern. Has the problem moved with the LED Head?

6. Swap the Imaging Unit of the problem color with any other Imaging Unit.

NOTE: Remove the keys before swapping. Print a Solid Fill Test Pattern to check for defects.

Has the problem color moved with the Imaging Unit?

7. Check for toner contamination on the high voltage contacts. Remove the Imaging Units and the Transfer Unit and Is there contamination on the contacts?

8. Are the wiring harnesses on the LED heads undamaged, properly routed and seated?

9. Inspect the high-voltage wiring harness.

Yes – Complete, the problem is with the Customer application.

No - Go to Step 2.

Yes – replace the Imaging Unit.

No - Go to Step 3.

Yes –Go to Step 4.

No - Go to Step 6

Yes – Clean with a dry, lint free cloth.

No - Go to Step 5

Yes – Replace the defective LED Head

No – Go to Step 6

Yes – Replace the Imaging Unit

No - Go to Step 7.

Yes – Clean the contacts.

No - Go to Step 8.

Yes – Go to Step 9.

No - reseat the wiring harness.

Yes – reseat the wiring harness.

No - Replace in the following order:

Transfer Unit / LVPS / Imaging Unit

Sensor Board / HVPS / PU Board

Repeating Bands, Lines, Marks, or Spots

This is usually caused by a damaged roller. In some instances, the spots may be dark instead of white and are repeated.

Initial Actions to Perform

■ Perform Initial Actions from Maintenance Procedures in Chapter 1 .

■ Verify the media used is supported by this printer.

■ Verify the media settings are correct at the Control Panel.

■ Print the ID Check Pattern (Reports – Print – ID Check Pattern) and

Demo page (Reports – Information – Demo Page) to see if it is an application problem.

■ Perform isolation Test Prints form Section 2.7.3.

■ Run the Density Error Correction Test in Section 2.7.5.

Areas of the Printer that Apply

■ Imaging Unit

■ Fuser

■ Transfer Unit

Troubleshooting Steps

Repeating Defects Spacing

Component

Imaging

Developer

Charge Roller

39.7

37.7 mm

Supply Roller 58.4 mm

Imaging Unit

Heat 87.7

Fuser mm

Transfer

Mis-Registration, Color Layers Not Correctly Registered

The image appears blurred and the primary colors are not aligning correctly onto the final image.

Initial Actions to Perform

■ Perform Initial Actions from Maintenance Procedures in Chapter 1 .

■ Verify the media used is supported by this printer.

■ Verify the media settings are correct at the Control Panel.

■ Print the ID Check Pattern (Reports – Print – ID Check Pattern) and

Demo page (Reports – Information – Demo Page) to see if it is an application problem.

■ Perform isolation Test Prints (Section 2.7.3).

■ Run the Color Registration Error Correction Test (Section 2.7.4)

Areas of the Printer that Apply

■ Imaging Unit

■ LED Heads

■ Color Registration Sensors

■ Transfer Unit

■ HVPS

■ CU Board

■ PU Board

Troubleshooting Steps

1. Cycle power to the printer. Did this correct the problem?

Resolution

Process Direction: Remove the Imaging Units and Transfer Unit. Inspect the Color

Registration Sensors for dirt, debris or toner build-up.

Are the sensors clean?

3. Check the Color Registration Shutter. Run the Service Diagnostics Registration Shutter test. Is the shutter functioning correctly?

Yes – Complete

No - Go to Step 2.

Yes – Go to Step 3.

No - Clean the sensors.

4. Inspect the Transfer Unit for tears or damage on the edges of the belt. Is the belt damaged?

5. Check the Drum drive gears for missing or worn gear teeth. Run the Service Diagnostics

Imaging Unit Motors tests to visually inspect the gears. Are the gears working correctly?

6. Replace the Registration Sensor Board. Did this fix the problem?

7. Replace the PU Board EEPROM. Did this fix the problem?

8. Scan Direction: Use the configuration page to identify the problem color.

Remove the

Imaging Unit of the suspect color. Inspect the grounding shaft.

Has the shaft shifted?

9. Check the Imaging Unit guides for debris or damage. Are the guides damaged or obstructed?

10. Check the Color Registration Sensors for dirt or debris. Be sure to check in and around the registration shutter.

11. Check the Color Registration Shutter. Run the Service Diagnostics Registration Shutter test. Is the shutter functioning correctly?

Yes – Go to Step 4.

No - Replace the solenoid or harness.

Yes – Replace Transfer Unit.

No - Go to Step 5.

Yes – Go to Step 6.

No - Replace the Drum Drive Gear.

Yes – Complete.

No - Go to Step 8.

Yes – Complete.

No - Replace the PU Board

Yes – Replace the Imaging Unit.

No - Go to Step 9.

Yes – Clean the guides on the chassis or replace assembly.

No - Go to Step 10.

Yes – Clean the sensor.

No - Go to Step 11.

Yes – Go to Step 12.

No - Replace the solenoid or harness.

Continued on Next Page

12. Are the LED Head ribbon cables undamaged, properly routed and seated?

13. Swap the LED Head of the problem color with any other LED Head. Print a

Supplies page. Has the problem moved with the LED Head?

14. Replace the Registration Sensor Board. Did this fix the problem?

15. Replace the PU Board EEPROM. Did this fix the problem?

Yes – Go to Step 13.

No - Reseat, correctly route or replace the wiring harness.

Yes – Replace the defective LED

Head

No - Go to Step14.

Yes – Complete.

No - Go to Step15.

Yes – Complete.

No - Replace the PU Board

4.1 Troubleshooting Paper Feed

4.1.1 Paper Feed Sensor Details

Diagram showing paper detection sensors in the print engine

Paper Jam Code Table for the print engine

Code Number

370

371

372

373

380

381

382

383

385

390

391

392

400 Jam Location

Duplex reversal

Duplex input

Feed error at Duplex

Multi-feed in Duplex Unit

Transport

Related Sensors

DUP-IN, DUP-R

DUP-F, DUP-R

IN1

DUP-B

IN1, IN2, WR, Fuser-IN, EXIT

Duplex entry

Around Fuser Unit

EXIT, DUP-IN, DUP-R

Fuser thermister

Feed error at front feeder IN2, WR

Tray1 IN1

Tray2 2nd-IN

Paper size error IN1

Diagram showing paper detection sensors in the RADF

Note!

The RADF detects a jam using the sensors shown above. Document jam check timings are stored in the ROM on the Main PCB to check whether a jam has occurred according to presence/absence of the document at the relevant sensor position.

There are no jam codes generated for the RADF

Sensor Location Table for the RADF

Sensor Description

PI 10 Cover open/close sensor

PI 11

PI 16

PI 17

PI 18

Document set sensor

Delivery reversal sensor

Read sensor

Registration paper sensor

4.1.2 Jam Removal Procedure

Front Cover Block (Code: 372, 380, 390, 391, 400)

Open the front cover. If either top end or rear of a jammed paper is visible, draw out the jammed paper gently with care. When code 400 occurs, jammed paper may be unloaded automatically sometime. In such a case, open and close the front cover. The MFP can be recovered from the error.

Fuser Unit (Code: 381, 382, 383, 385)

Caution!

The fuser unit gets very hot. Be very careful not to touch the fuser unit with

your hands.

(1) Raise the scanner and open the top cover.

(2) Raise the fuser unit lock lever (lever shown in blue) in the direction shown by the arrow.

(3) Hold the handle and remove the fuser unit and place it on a flat workbench.

(4) Raise the jam release levers (at two locations) and draw out the jammed paper in the direction (direction is strictly specified) shown by the arrow (toward front of a printer) gently with care.

(5) Hold the handle and return the fuser unit back inside of a printer gently.

(1) Remove the four image drum cartridges and place them on a flat workbench.

(2) Cover the removed image drum cartridge with a black paper.

(3) Draw out the jammed paper gently with care.

(4) Return the image drum cartridges back to the original positions.

Duplex Unit (Code: 370, 371, 373)

Note!

Before removing the duplex unit, be sure to turn OFF the power of the MFP.

(1) Remove the Duplex Unit.

(2) Press the jam release lever of the duplex unit to open the duplex unit cover.

(3) Draw out the jammed paper gently with care.

Second Tray Unit (Option) (Code: 391, 393)

This manual describes the jam clear method using tray 2 as an example. Tray 3 can also be cleared using the same method.

(1) Remove the paper tray from the second tray unit, and remove the paper.

(2) After the jammed paper is removed, open the MP tray, push up the center lever.

Then the front cover can be opened or closed.

RADF Unit

Note!

If the jammed paper cannot be removed easily, do not remove with excessive force.

Rotate the dial until the jammed document can be easily removed. If an attempt is made to pull out the jammed paper with force, the jammed document may be tear.

(1) Raise the document cover OPEN lever and open the document cover.

(2) Draw out the jammed paper gently with care. If the jammed paper cannot be removed, go to step (4).

Note!

Do not pull the document out with excessive force.

(3) When the jammed paper is removed, go to step (9).

(4) Open the inside cover.

(5) If top end of the jammed paper is visible, pull it out gently.

If top end of the jammed paper is not visible, close the inside cover and go to step 3.

(6) When the jammed paper is removed, close the inside cover and go to step 9.

(7) Rotate the dial so that the jammed document is unloaded.

(8) Raise the document tray. Remove the jammed document gently.

(9) Close the document cover.

Chapter 5 Troubleshooting Error Codes

Troubleshooting Self Diagnostic Codes

Self Diagnostic Error Codes

Code Cause/Description Remedy

002 - 005

020

CPU Exception

CU ROM Hash Check Error

Power Off/On. If RAM DIMM is installed, remove and

Power OFF/ON.

Re-mount RAM DIMM / Replace RAM DIMM

Replace the CU Board

Power OFF/ON.

Replace the CU PCB

030

031

040

041

042

CU Resident RAM Check Error

CU Optional RAM Check Error. Is installation of the

RAM DIMM normal? Does the MFP recover from the error when the RAMDIMM is replaced?

CU EEPROM Error

CU FLASH Error

CU PCB FLASH ROM Error

Power OFF/ON.

CU PCB replacement

Re-mount RAM DIMM / Replace RAM DIMM

Replace the CU Board

Re-mount RAM DIMM / Replace RAM DIMM

Replace the CU Board

051

054

055

056

File Flash System Error, CU PCB FLASH ROM Error.

Failure to access to the Flash ROM that is directly soldered to the CU PCB.

CU Fan Error, CPU cooling fan error on CU PCB. Is the

CU fan connector connected normally? Does the MFP recover from the error when the fan is replaced?

Communication error between the Controller and the

Scanner Unit is detected.

Scanner unit not detected. The CU FW has detected that the Scanner Unit cannot be recognized though it had been recognized when the power was turned ON.

Hard disk drive is not installed. Does the MFP recover to normal operation after hard disk is installed and the power is turned OFF once and back ON?

Scanner command communication timeout

Re-connect fan. Replace fan. Replace TBM PCB.

If the MFP does not recover even when the power is turned OFF and back ON, check the connection between the Scanner and Printer.

Replace Hard Disk Drive.

Replace CU PCB

Replace Scanner Main PCB

Replace CU PCB

057

058

070

Internal error is detected in the scanner controller.

Postscript core error. Error is detected inside the postscript core.

Replace Scanner Main PCB

Self Diagnostic Error Codes

Code Cause/Description

072

Engine I/F Error. I/F error between PU-CU. Is CU

Assembly installed correctly?

073

074

075

Video Error. Error is detected when expanding of the video data. (Illegal data is received.)

Video Error. Error is detected during expanding of the image data.

Parameter matching check error. EEPROM or Flash cannot read/write normally.

Engine EEPROM read/write error is detected.

081

104

106

111

112

113

121

122

123

124

126

127

128

Engine control logic error.

Duplex unit of another model is detected.

The 2 nd tray of another model is detected.

The 3rd tray of another model is detected.

High voltage power supply I/F error. Is the cable between PU PCB and High voltage power supply connected normally? Is there defective contact?

Low voltage power supply fan error. Does the fan in the low voltage power supply (bottom right on the front) operate normally? Is the fan connector connected normally?

Environment humidity abnormal/ Humidity sensor is not connected.

Environment temperature abnormal

Remedy

Replace the CU Board

Replace the PU Board

Decrease resolution, and execute printing again.

Replace the CU PCB

Decrease resolution, and execute printing again.

Replace the CU PCB

Replace the CU Board

Replace the PU Board

Install the correct Duplex unit.

Install the correct 2 nd tray.

Install the correct 3rd tray.

Check for defective contact in the high voltage system.

Replace the High voltage power Supply.

Confirm connection of the fan connector.

Replace fan motor

Replace PU PCB

Power OFF/ON.

Replace the Control panel PCB

Power OFF/ON.

Replace the Control panel PCB

Power OFF/ON.

Replace the Control panel PCB

Dew condensation is detected in MFP. It can easily occur when the MFP is brought indoors directly from outdoors. Leave the MFP for two hours under normal room temperature. Then, turn OFF the power and back

ON. Does the error reoccur?

Fixing/ ventilation fan error

05:

07:

Fixing unit end cooling fan error.

Cooling fan on the side of the power supply block

(side fan) error

Confirm connection of the fan connector.

Replace fan motor

Replace PU PCB

Confirm connection of the fan connector.

Replace fan motor

Replace PU PCB

Self Diagnostic Error Codes

Code Cause/Description

131 - 134

LED head detection is abnormal.

(131 =Y, 132 = M, 133 = C, 134= K) Is the LED head installed normally? Is the LED HEAD FUSE blown?

142

150 - 153

154

155

160 - 163

167 - 169

170 / 171

172 - 177

181 / 182

190

200 - 202

203 – 208

214

209

ID Up/Down Position detection error.

ID unit fuse is blown.

(150 = Y, 151 = M, 152= C, 153 = K)

Belt unit fuse is blown.

Fuser unit fuse is blown.

Toner sensor detection is defective.

(160= Y, 161 = M, 162 = C, 163= K).

Is the toner cartridge installed? Is the toner lock lever set?

Thermistor Slope Error / Compensation Thermistor

Error

Short-circuit or open circuit of the Fuser unit thermistor is detected.

Fuser unit thermistor detected abnormal temperature.

(High or low temperature)

Option unit I/F error (181 =Duplex Unit, 182 = Option

Tray)

System memory overflow.

PU Firmware Download Error

CU program error. CU program executed illegal process.

Custom Media Type table download has failed.

Remedy

Install the LED head unit properly.

Check the LED HEAD FUSE.

Turn OFF the power once and back ON.

Replace LED head unit

For the fuse check method, refer to section 2.7.8.

Reinstall the ID units. Turn OFF the power and back ON.

Replace the ID UP/DOWN sensor.

Reinstall the ID unit. Turn OFF the power and back ON.

Replace ID Unit

Check the cable connection between PRZ PCB and PU

PCB.

Replace PU PCB

Reinstall the Belt unit. Turn OFF the power and back ON.

Check the cable connection

Replace Belt Unit

Replace PU PCB

After cleaning the connectors of the Fuser, re-install it.

Check the cable connection

Replace Fuser

Replace PU PCB

Rotate the toner lock lever that fixes the toner cartridge to the locking position.

Turn OFF the power and back ON.

Replace the toner sensor Assy.

After cleaning the connectors of the Fuser, re-install it.

Replace Fuser

Replace PU PCB

After cleaning the connectors of the Fuser, re-install it.

Replace Fuser

Replace PU PCB

After cleaning the connectors of the Fuser, re-install it.

Replace Fuser

Replace Low voltage power supply

Replace PU PCB

Turn OFF the power and back ON.

Check connection of the option connector.

Replace the option unit.

Turn OFF the power and back ON.

Install the add-on RAM DIMM

Replace the add-on RAM DIMM

Turn OFF the power and back ON.

Reload PU Firmware

Check the connection between CU PCB and PU PCB.

Replace CU PCB

Turn OFF the power and back ON.

Reload Firmware

Self Diagnostic Error Codes

Code Cause/Description

231

901 - 904

918

923

928

980

RFID Reader is not installed. RFID read device error

Belt temperature is abnormal.

901: Short circuit.

902: Open circuit.

903: High temperature.

904: Low temperature.

Is the cable between the belt thermistor and high voltage

PCB connected normally?

Duplex FAN Alarm. Duplex internal FAN error.

Remedy

Check connections of the RFID R/W PCB.

Replace the RFID R/W PCB

Replace the P6X PCB.

Re-connect the cable properly.

Turn OFF the power and back ON.

Replace the Belt thermistor

Black image drum lock error. K ID does not rotate properly.

Fuser motor lock error. Fuser does not rotate properly.

Media jamming error around the fuser. Media is jammed by entangling around the fuser.

Check that the Duplex unit is installed properly.

Check that the FAN is connected properly.

Replace the FAN.

Check that the K ID is installed properly.

Replace the K ID unit.

Replace the K ID motor.

Check that the Fuser is installed properly.

Replace the fuser unit.

Replace the fuser motor.

Replace the fuser unit.

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Key features

Detailed cleaning procedures for maintaining optimal print quality.
Comprehensive service menu adjustments for advanced troubleshooting.
Troubleshooting guides for print quality and paper feed issues.
Step-by-step error code resolution procedures.

Frequently asked questions

Press the [SETUP] key, then press the numeric keys in the order of [#] [1] [9] [3] [7]. This displays the password entry screen.

Pull the document table lock lever forward, raise the document table, press the top cover button, and open the top cover. Then wipe the lens surface of the LED head with soft tissue paper.

The guide provides details on paper feed sensors and jam removal procedures.