Canon FY8-13FW-000DADF-A1, Service Manual

Page: 129 / 157

CHAPTER 5 TROUBLESHOOTING
5-22
COPYRIGHT © 1998 CANON INC. CANON DADF-A1 REV.0 DEC. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Parts
Step
Checks Yes/No Action
1
No
2
Yes
No
Deliver motor
clock sensor
(S13)
Set the meter range to 20 VDC,
and the - probe to J14-1 on the
DADF controller PCB. Does
the reading repeat 5 and 0 V
when the clock disk is turned
slowly by hand? Check the wiring from
the delivery motor clock
sensor (S9) to the DADF
controller PCB; if
normal,replace the
delivery motor clock
sensor (S13).
Delivery motor
(M5)
Set the meter range to 200 V
DC, and connect the + probe to
J14-8 and the - probe to J14-7
on the DADF controller PCB.
Does the reading change to 23
V when the Copy Start key is
pressed?
Check the wiring from
the delivery motor (M5)
to the DADF controller
PCB; if normal, replace
the delivery motor M5.
Replace the DADF
controller PCB.
4. E403
Table 5-204
5. E404
Table 5-205
Parts Step
Checks
Yes/No
Action
1
No
2
Yes
No
Feeding motor
clock sensor (S9) Set the meter range to 20 VDC,
and connect the + probe to J9-A11
and the - probe to J9-A10 on the
DADF controller PCB. Does the
reading repeat 5 and 0 V when the
clock disk is turned slowly by hand? Check the wiring from the
feeding motor clock sensor
(S9) to the DADF controller
PCB; if normal, replace the
feeding motor clock sensor
(S9).
Feeding motor (M2) Set the meter range to 200 VDC,
and connect the + probe to J11-1
and the - probe to J11-2 on the
DADF controller PCB. Does the
reading of the meter change to 23 V
when the Copy Start key is pressed? Check the wiring from the
feeding motor (M2) to the
DADF controller PCB; if
normal, replace the feeder
motor (M2).
Replace the DADF
controller PCB.