Panasonic UF-580 / UF-590 / UF-780 / UF-790 / UF-5100 / UF-6000 / UF-6100 Service Manual ▷ View online
117
4.4.9.
Horizontal White Lines
END
No
Yes
Clean or replace the rollers.
START
No
Yes
Check the Scanner mechanism.
Is the Toner Cartridge
operational?
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?
(HVPS) normal?
1. Check all connectors and
voltages on the Power Supply
Unit (HVPS).
Unit (HVPS).
2. Replace the Power Supply Unit
(HVPS).
(HVPS).
Yes
No
1. Clean the BTR with a soft, dry
cloth.
cloth.
2. Replace the BTR.
Are there any foreign particles
or stains on the BTR?
or stains on the BTR?
No
Yes
Paper Travel
P
Are the Fuser and Pressure
Roller surfaces clean?
Roller surfaces clean?
Is the printout in Service
Mode 3 normal?
Mode 3 normal?
118
4.4.10.
Improper Fusing (Printed image does not bond to the paper)
Note:
Replace the entire Fuser Unit when the Thermostat, the Thermal Fuse or the Thermistor Assembly
breakdown into an open-circuit.
breakdown into an open-circuit.
END
Is the Fuser Unit normal?
No
Yes
Replace the Fuser Unit. (See Note)
START
No
Yes
Is the recording paper damp?
Replace the recording paper.
P
119
4.4.11.
Voids in Solid Areas
END
No
Yes
Clean or replace the rollers.
START
No
Yes
Is the recording paper damp?
Replace the recording paper.
Is the Toner Cartridge
operational?
operational?
Yes
No
Replace the Toner Cartridge.
P
Paper Travel
Are the Fuser and Pressure
Roller surfaces clean?
Roller surfaces clean?
120
4.4.12.
Black Dots
END
No
Yes
Clean or replace the rollers.
START
Is the Toner Cartridge
operational?
operational?
Yes
No
Replace the Toner Cartridge.
P
Paper Travel
Are the Fuser and Pressure
Roller surfaces clean?
Roller surfaces clean?
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