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CHAPTER 13 TROUBLESHOOTING
13-80
COPYRIGHT
©
1999 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
21 The copy is blank.
Yes/No
NO
NO
NO
YES
NO
NO
YES
Step
1
2
3
4
5
6
Action
Check the locking
mechanism of the
developing assembly.
Check the drive
mechanism of the
developing assembly.
Insert it fully.
Check the transfer
charging assembly.
1. Check the relay
PCB.
2. Check the path of
power between the
CCD unit and the
relay PCB; if
normal, replace the
CCD unit.
1. Replace the laser
unit.
2. Replace the image
processor PCB.
Replace the drum unit.
Checks
Is the developing assembly locked to the
photosensitive drum during copying
operation?
Is the developing assembly rotating
during copying operation?
Is the transfer charging assembly fully
inserted?
Is leakage noted in the transfer charging
assembly?
Is the voltage of the power to the CCD
unit as rated?
Is the laser output normal?
Cause
Developing
assembly
Developing
assembly drive
mechanism
Transfer
charging
assembly
CCD unit
Relay PCB
Laser unit image
processor PCB
Drum unit