Panasonic UF-890 Service Manual page 140

4.4.9 Horizontal White Lines
Is the printout in Service Mode 3
normal?
Is the recording paper damp?
Is the Toner Cartridge operational?
Are there any foreign particles or
stains on the BTR?
Is the HVPS normal?
Are the Fuser and Pressure Roller
surfaces clean?
START
Yes
No
Yes
No
No
Yes
Yes
No
No
Yes
No
Yes
END
140
P
Check the Scanner mechanism.
Replace the paper.
Replace the Toner Cartridge.
1. Clean the BTR with a soft, dry
cloth.
2.Replace the BTR.
1. Check all connectors and
voltages on the HVPS.
2. Replace the HVPS.
Clean or replace the rollers.