Oki ES5112dn Maintenance Manual page 42

In case of inefficient fusing (If touch by hand the character or image that are
printed on paper will be faded or unstuck.)
• Is the specified paper used?
• No Use the specified paper.
• Yes Is the backup roller surface normal?
• No Replace the fuser Assy.
• Yes Does the contact plate of the fuser Assy contact the base plate
properly? (See Figure 2-5.)
• No Adjust the contact plate of the fuser Assy so that it
contacts the base plate properly.
• Yes Replace Fuser Assy.
• Has the problem been solved?
• Yes Completed
• No Replace the main board or high-voltage power supply unit.
Vertical white belt/ White line
• Is the LED lens dirty?
• Yes Clean the LED lens.
• No 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 so that it contacts the TR terminal
of the high-voltage power supply unit properly.
• Yes Replace the transfer roller.
• Has the trouble been solved?
• Yes Completed.
• No Is the backup roller surface normal?
• No Replace the fuser Assy.
• Yes Is the LED head appropriately installed? (Check the HEAD0
connector of the main board and the PC connector of the LED
head.)
• No Install the LED head appropriately.
• Yes Replace the LED head.
• Has the trouble been solved?
• Yes Completed.
• Yes Replace the image drum cartridge.
• Has the trouble been solved?
• No Replace the main board or high-voltage power supply unit.
2. Procedures for Repairing
2-26