Panasonic UF-5500 Service Manual page 139

11.2.4.4. Dirty or Half Darkness Background
Drum unit replace.
OK?
NO
Is paper feed roller dirty?
OK?
YES
Is the heat roller or the pressure roller dirty?
OK?
YES
CROSS REFERENCE:
High Voltage Section (P.181)
YES
END
Pick up, Regist, Eject roller
NO
Clean paper feed roller.
YES
OK? END
NO
NO
Clean the heat roller or the pressure roller.
YES
OK? END
NO
Is the high-voltage terminal contacting stably?
A
Replace the high-voltage
NO
OK?
terminal.
YES
NO
HIGH VOLTAGE
Go to
SECTION.
139
UF-5500 / 4500
Paper
Travel
YES
OK? END