Canon LBP-860 Service Manual page 172

Laser beam printer
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CHAPTER 6
I- 13
Poor fixing
Possible I'BUSP Sle
P
rranster
I
zhargtng roller
Thermistor
2
Fixing rollers 3
[upper and
lOV"WI
i
6 - 26
Check
the transfer charging roller dirty?
Is
Oblain Len test prints. Is the last
imaee lilhter than the first?
Does Poor fixing occur in a vertical
band?
Is the lower fming roller dirty'?
Ii-the nip width correct?
Procedure
Clean the roller. If it is not
YES
possible to clean, replace it.
YES
Replace the thermistor.
YES
Check whether the upper
and lower fixing rollers are
damwed.
YES
Clean the roller. If it is not
possible lo clean it, replace
it. __~~
YES
Perform a print using the
recommended paper. If the
problem disappears, advise
the customer to only use th
recommended paper.
NO
Replace the fixing unit.

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