Panasonic UF-6300, Service Manual, Page: 101 / 274

101
4.4.7. Dark Background
Is the Laser Unit (LSU) normal?
No
Yes
Replace the Laser Unit (LSU).
START
No
Yes
Check the Scanner mechanism.
Is the Toner Cartridge
operational?
No
Yes
Is the recording paper damp?
Yes
No
Replace the recording paper.
Replace the Toner Cartridge.
Is the Power Supply Unit
(HVPS) normal?
1. Check all connectors, and
voltages on the Power Supply
Unit (HVPS).
2. Replace the Power Supply Unit
(HVPS).
Yes
No
END
No
Yes
Clean, or replace the rollers.
Paper Travel
P
Are the Fuser, and Pressure
Roller surfaces clean?
Is the printout in Service
Mode 3 normal?