Oki ES5112dn Maintenance Manual page 40

The white section is dirty
• Is the image drum exposed by the external light?
• Yes Install the image drum in the printer and wait 30 minutes.
• No From [MAINTENANCE MENU], select [PAPER BLACK SET] -
[SMR SETTING] and set a larger value for adjustment.
• Has the trouble been solved?
• Yes Completed.
• No From [MAINTENANCE MENU], select [SMR SETTING] and set
a smaller value for adjustment.
• Has the trouble been solved?
• Yes Completed.
• No Is the heat roller of the fuser unit assy dirty?
• Yes Clean the heat roller.
• Has the trouble been solved?
• Yes Completed.
• No Replace the image drum cartridge.
• Has the trouble been solved?
• Yes Completed.
• No Replace the main board, high-voltage power/ sensor board.
White paper is outputted
• Is the LED head appropriately connected? (Check the HEAD0 connector
of the main board and the PC connector of the LED head.)
• No Connect the LED head appropriately or replace the head
cable.
• Yes Is the image drum cartridge appropriately connected to the earth
contact? (See Figure 2-3
• No Adjust the earth contact (drum) of the contact assembly.
• Yes Replace the LED head.
• Has the trouble been solved?
• Yes Completed.
• No Replace the main board or high-voltage power supply unit.
Vertical black belt/ Black line
• Clean the LED lens array of the LED head.
• Has the trouble been solved?
• Yes Completed.
• No Replace the LED head.
• Has the trouble been solved?
• Yes Completed.
• No Replace the image drum cartridge.
• Has the trouble been solved?
• Yes Completed.
• No Replace the main board or high-voltage power supply unit.
2. Procedures for Repairing
)
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