Horizontal Dark Lines - Panasonic UF-580 Service Manual

4.4.6.

Horizontal Dark Lines

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?
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.
3. Replace the Power Supply
Unit.
No
Clean or replace the rollers.
107