43502101TH Rev.1
75 /
Oki Data CONFIDENTIAL
8
White vertical belts or streaks
• Are the LED lens dirty?
• Yes
Clean the LED lens.
• No
Is the contact plate of the transfer roller in proper contact with the high voltage/sensor board
(see Figure 5-5)?
• No
Adjust the contact plate to make a proper contact with the high voltage/sensor board.
• Yes
Replace the transfer roller.
• Has the problem been solved?
• Yes
End
• No
Is the tension between the back-up roller (7.52kg) and the surface of back-up roller normal?
•No
Replace the back-up roller or bias spring.
• Yes
Is the LED head being installed properly (check HEAD connector on the main control board
and PC connector on the LED head)?
• No
Install the LED head properly.
• Yes
Replace the LED head.
• Has the problem been solved?
• Yes
End
• Yes
Replace the image drum cartridge.
• Has the problem been solved?
• Yes
End
Note:
After replacing the image drum cartridge, reset the drum counter (see User's
Manual).
• No
Replace the main control board or high voltage/sensor board.
Summary of Contents for B4500 Series
Page 1: ...Oki Data CONFIDENTIAL B4500 B4550 B4600 Maintenance Manual 032007A PRINTING SOLUTIONS ...
Page 17: ...43502101TH Rev 1 17 Oki Data CONFIDENTIAL Upper cover unit Figure 2 2 Upper cover ...
Page 85: ...43502101TH Rev 1 85 Oki Data CONFIDENTIAL 2 High Voltage Sensor Board ...
Page 88: ...43502101TH Rev 1 88 Oki Data CONFIDENTIAL 3 Power Supply Board CN2 CN101 ...
Page 171: ...Please refer to the Illustrated Parts Manual for spare part information ...