E005; E006; E010 - Canon NP6251 Service Manual

CHAPTER 11 TROUBLESHOOTING

6. E005

Cause Step
Fixing cleaning 1
belt
Cleaning belt 2
detecting lever
Fixing/feeding 3
unit
DC controller 4
PCB
Sensor

7. E006

Cause Step
Fixing/feeding 1
connector

8. E010

Cause Step
1
DC controller 2
PCB
Main motor 3
(M1)
11-88
COPYRIGHT © 1997 CANON INC.
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Checks
Is the web of the fixing assembly
taken up?
Is the position of the cleaning belt
detecting lever correct?
Is the fixing/feeding unit set in the
machine correctly?
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
Is the connector fixed in position
correctly? Is it securely connected
to the copier's connector?
Checks
Is the connector of the main motor
connected?
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?
Replace the main motor. Is the
problem corrected?
CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
YES/NO Action
YES Replace the cleaning
belt.
NO Correct the position of
the lever.
YES The connector at the
rear of the fixing/feeding
unit may have poor
contact; make a check.
NO Replace the DC
controller PCB.
YES Replace the sensor.
YES/NO Action
NO Check the connector. Fix
it firmly in position if
necessary.
YES/NO Action
NO Connect the connector.
NO Replace the DC
controller PCB.
YES End.