Canon Vizcam 1000, Service Manual

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COPYRIGHT © 2001 CANON INC. CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
19 E070
Cause
Transfer belt
Joint detecting
seal
Transfer belt
home position
sensor (PS16)
Operation
(faulty)
DC power supply
PCB
Transfer belt
motor (M14)
DC controller
PCB
Step
1
2
3
4
5
6
Checks
Is the orientation of the transfer belt
normal?
Is the seal soiled or peeling?
Is the sensor normal? (See the
instructions on how to check
photointerrupters.)
Turn the transfer belt drive shaft by a
finger. Does it turn smoothly? (Take
care not to touch the transfer belt.)
Turn OFF and ON the power switch
to clear ‘E070’.
Is 25 V present at J3201-2 and 5 V at
J3201-4 on the transfer belt drive
PCB?
Turn OFF and ON the power switch.
Does the voltage at J2219B-4 on the
DC controller PCB change from 5 V
to 0 V?
Yes/No
NO
NO
NO
NO
NO
YES
NO
Action
Install it correctly.
Clean it or replace it.
Replace the sensor.
Remove the cause of
poor rotation.
Check the wiring from the
DC power supply PCB to
the transfer belt driver
PCB; if normal, replace
the DC power supply PCB.
Check the wiring from the
DC controller PCB to the
transfer belt motor; if
normal, replace the
transfer belt motor.
Replace the DC controller
PCB.