Canon LBP-860 Service Manual page 166

Laser beam printer
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CHAPTER 6
I - 5
Large dots vertically in line
Possible cause Step
Statir charge
I
eltminator
2
Transfer
3
charging roller
/ I-6 1 Dirt on hack of paper
Possible cause Step
6-20
Check
Is
the static charge eliminator dirty?
Is the static charge eliminator
grounded?
Is the transfer charging roller dirty?
Check
Is the transfer charging roller dirty7
______~
Is the entrance guide dirty?
Procedure
roller. If it is not
possible to clean Lt. replace
Result
Procedure
YES
Clean the roller. If it cannot
be cleaned, replace It.
YES
Clean the guide.
._____
NO
Ground the rollers properly.
Y E S Clean the roller. If it is not
possible to clean it. replace
it.
N O
Clean the paper feed guide.

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