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CHAPTER 13 TROUBLESHOOTING
13-94
COPYRIGHT
©
1999 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
33 E204
Step
1
2
Action
See "The scanner fails
to move forward."
Check the wiring from
the DC controller PCB
to the sensor; if
normal, replace the
sensor.
Replace the DC
controller PCB.
Checks
Does the scanner motor forward when the
Copy Start key is pressed?
Is the scanner image leading edge sensor
(PS3) normal? (See the instructions on
how to check photointerrupters.)
Yes/No
NO
YES
NO
Cause
Scanner image
leading edge
sensor (PS3)
sensor
DC controller
PCB
31 E121
Step
1
2
3
Action
Remove the foreign
matter.
Connect the connector
securely.
End.
Replace the DC
controller PCB.
Checks
Is there foreign matter that hinders the
rotation of the laser driver cooling fan?
Is the connector (J503) on the DC
controller PCB connected securely?
Replace the laser driver cooling fan
(FM5). Is the problem corrected?
Yes/No
YES
NO
NO
YES
Cause
Foreign matter
Connector
Laser driver
cooling fan
(FM5)
DC controller
PCB
32 E202
Step
1
2
3
Action
See "The scanner fails
to move forward."
Check the wiring from
the DC controller PCB
to the sensor; if
normal, replace the
sensor.
Replace the DC
controller PCB.
Checks
Is the scanner at the scanner home
position when E202 turns on?
Is the scanner home position sensor (PS1)
normal? (See the instructions on how to
check photointerrupters.)
Yes/No
NO
YES
NO
Cause
Scanner home
position sensor
(PS1)
DC controller
PCB