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MC-860 / CX2633MFP
Service Manual
75 pgs3.02 Mb0

Oki MC-860 / CX2633MFP Service Manual

MC-860 / CX2633MFP
Service & Troubleshooting Guide
© 2009 OkiData Americas, Inc.
Disclaimer
© Okidata Americas, Inc. 2009
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
2.4 Panel 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
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Chapter 1 Maintenance Procedures – Printer
1.1 Exterior Cleaning
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.
1. 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.
2. 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.
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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.
Top Cover Button
Document Table Lock Lever
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
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T
T
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
• Clean the pad portion of the tray with a clean cloth wrung out using clean water
Feed Roller (Large)
Feed Roller (Small)
Pad
ray 1
Roller
ray 2, Tray 3
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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.
• 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.
Drum Cartridges
6
(
)
• Hold the handle of the fuser unit and remove it.
Fuser Unit Lock Lever (Blue)
• Remove the Transfer Belt unit from the MFP.
• Thoroughly clean the interior of the printer and re-install the transfer belt,
Transfer Belt
fuser, and drum units. Inspect all units before re-installation.
Fuser Handle
Transfer Belt Retaining Screws
Blue
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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
• Clean the document transport roller.
.
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
• Clean the document retainer roller.
Dial
Inside
top
cover
Inside Cover
Document Cover
Clean surface of the roller with a clean cloth wrung out using clean water or neutral detergent.
Clean surface of the roller with a clean cloth wrung out using clean water or neutral detergent.
Dial
Clean surface of the roller with a clean cloth wrung out using clean water or neutral detergent.
Document Retainer Roller
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• Open the document table cover.
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.
Scanning Glass
Document Retaining Pad
Platen Glass
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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.
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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.
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2.2 Service Maintenance Menu – Overview
System Maintenance Screen Panel Maintenance Screen Copy Maintenance Screen
Scan Maintenance Screen Fax Maintenance Screen Printer Maintenance Screen
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Service Maintenance Menu Structure is shown below.
Level 1 Level 2 Level 3 Level 4 Reboot
Process System Maintenance
(See Section 2.3)
OKIUSER Format HDD Format Flash ROM Menu Reset All Reset Test Print Menu
New Password When Closed
Verify Password When Closed
Side Reg. None FBS
ADF (Front)
ADF (Back)
Echo support None Modem transmission speed None Echo support None Modem transmission speed None
ON period None
Off Period None
Front Edge None Side Reg. None Front Edge None Back Edge None Side Reg. None Front Edge None Back Edge None
Panel Maintenance
(See Section 2.4)
Copy Maintenance Scan Maintenance
(See Section 2.5)
Fax Maintenance
(See Section 2.6)
Change Password
LED Test LCD Test OP Key Test
Color Copy Retrieve Shading Data
Clean RADF Roller Adjust Scan Position
Country Code TX
RX
Pulse Make Ratio MF(Tone) Duration
Calling Timer
Attenuator MF Attenuator
Relay Tonal
DTFM
IBM 5577 IBM PPR III XL EPSON FX HP-GL/2
Printer Maintenance
(See Section 2.7)
Line Test
Personality
Peak Control Engine Diag. Mode
Supplementary Description of “Reboot Process”
When Closed
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
Reboot starts automatically when the [Close] button is pressed on the top screen of the service menu.
is pressed on the top screen of the service menu.
When Closed
When Executed
When Executed
None
When Executed
When Closed
None
None
None
When Closed
None
None
When Closed
None
None
None
None
None
None
None
When Closed
When Closed
When Closed
When Closed
When Closed
When Closed
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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.
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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.
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Change Password
Note!
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.
The Password can be changed by the “Change Password” menu of the “System
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.
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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 [SETUP] key.
Press the [SETUP] key.
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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.
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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.
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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.
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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. 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.
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.
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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.
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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 ignore once *1: Enable
• EP tone addition during V29 send *2: Enable
• Wait time between DIS – DCS *3: 1000 ms
When set to Disable
• DIS ignore once *1: Disable
• EP tone addition during V29 send *2: Disable
• Wait time between DIS – DCS *3: 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.
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