Panasonic UF-890 Service Manual page 141

4.4.10 Improper Fusing (Printed image does not bond to the paper)
Note:
Replace the entire Fuser Unit when the Thermostat, Thermal Fuse and / or the Thermistor Assembly
becomes an open-circuit.
START
Is the recording paper damp?
No
Is the Fuser Unit normal?
Yes
END
P
Yes
Replace the paper.
No
Replace the Fuser Unit. (See Note)
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