Canon NP6251 Service Manual page 619

CHAPTER 11 TROUBLESHOOTING
6. E005
Cause Step
Fixing cleaning
belt
Cleaning belt
detecting lever
Fixing/feeding
unit
DC controller
PCB
Sensor
7. E006
Cause Step
Fixing/feeding
connector
8. E010
Cause Step
DC controller
PCB
Main motor
(M1)
11-88
COPYRIGHT © 1997 CANON INC.
Checks
1 Is the web of the fixing assembly
taken up?
2 Is the position of the cleaning belt
detecting lever correct?
3 Is the fixing/feeding unit set in the
machine correctly?
4 Is the voltage between J108A-13
(+) and J108A-12 (–) on the DC
controller PCB about 5 V? Is the
cleaning belt length sensor (PS11)
normal? (See the instructions on
how to check photointerrupters.)
Checks
1 Is the connector fixed in position
correctly? Is it securely connected
to the copier's connector?
Checks
1 Is the connector of the main motor
connected?
2 Does the voltage between J111B-
4 (+) and J111B-1 (–) on the DC
controller PCB change from 0 to
about 5 V when the Copy Start
key is pressed?
3 Replace the main motor. Is the
problem corrected?
YES/NO
YES
NO
YES
NO
YES
YES/NO
NO
YES/NO
NO
NO
YES
CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
Action
Replace the cleaning
belt.
Correct the position of
the lever.
The connector at the
rear of the fixing/feeding
unit may have poor
contact; make a check.
Replace the DC
controller PCB.
Replace the sensor.
Action
Check the connector. Fix
it firmly in position if
necessary.
Action
Connect the connector.
Replace the DC
controller PCB.
End.