Panasonic UF-8100 Service Manual page 91

4.3.6. Horizontal Dark Lines
Ver. 2.1
START
Is the printout in Service
Mode 3 normal?
No
Is the Toner Cartridge
operational?
Yes
Are there any foreign
particles, or stains on the BTR?
No
Is the Laser Unit (LSU) normal?
Yes
Is the Power Supply Unit
normal?
(HVPS)
Yes
Are the Fuser, and Pressure
Roller surfaces clean?
Yes
END
P
Yes
Check the Scanner mechanism.
No
Replace the Toner Cartridge.
Yes
1. Clean the BTR with a soft,
dry cloth.
2. Replace the BTR.
No
Replace the Laser Unit (LSU).
No
1. Check all connectors, and
voltages on the Power
Supply Unit .
2. Check the Connector, and
voltage on the Power Supply
Unit (HVPS).
3. Replace the Power Supply
Unit (HVPS).
No
Clean, or replace the rollers.
91
UF-7000/8000
UF-7100/8100
APR 2007