2-23
• Has the trouble been solved?
• Yes
Completed
• No
Replace the image drum cartridge.
• Has the trouble been solved?
• Yes
Completed
• No
Is the surface elasticity of the back-up roller normal?
• No
Replace the fuser Assy.
• Yes
Replace the main board or high-voltage power supply unit.
Pale printing or the whole printing is faded.
• Does the printer lack toner? (Is the message of Toner Low displayed?)
• Yes
Supply the toner.
• No
Is specified paper used.
• No
Use specified paper.
• Yes
Is the lens of the LED head dirty?
• Yes
Clean the lens.
• No
Is the LED head appropriately installed? (Check that the HEAD0
connector of the main board and the PC connector of the LED
head are appropriately connected.)
• No
Install the LED head appropriately.
• Yes
Does the contact plate of the transfer roller contact the TR
terminal of the high-voltage power supply unit properly? (See
Figure 2-4 , Section 6.2(6))
• No
Adjust the contact plate of the transfer roller so that it
contacts the TR terminal of the high-voltage power supply
unit and the transfer roller shaft well.
• Yes
Are the contact of the developing roller and toner supply roller of
the image drum cartridge appropriately connected to the contact
assembly? (See Figure 2-3 and )
• No
Adjust so that the contacts of the developing roller and
toner supply roller are connected to the contact assembly.
• Yes
Replace the transfer roller.
LED head cable
PC connector
Main board
LED head
2. Procedures for Repairing
