Panasonic UF-5500 Service Manual page 137

11.2.4.2. Dark or White Vertical Line
Clean the cover glass.
OK?
NO
Drum unit replace
OK?
Is the heat roller or the pressurized roller
abnormal?
OK?
YES
Is the reflecting mirror dirty?
OK?
YES
Replace LSU.
Note:
When wiping the cover glass, reflecting mirror, use a dry and soft cloth.
YES
END
YES
END
NO Replace the heat roller or
the pressurized roller.
YES
OK? END
NO
NO
Clean the reflecting mirror.
YES
OK? END
NO
A
・The scratch and dirt of the heat roller
・The scratch and dirt of the pressurized roller
137
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