Canon GP605 Service Manual page 700

CHAPTER 13 TROUBLESHOOTING
68 Pickup operation fails. (multifeeder pickup)
Cause Step
Wiring
Pickup roller,
Pickup/feeding
roller,
Separation roller
Multifeeder
paper sensor
(PS17)
Multifeeder
feeding clutch
(CL7)
Multifeeder
feeding clutch
(CL18)
Multifeeder
pickup solenoid
(SL6)
DC controller
PCB
13-108
COPYRIGHT © 1999 CANON INC.
1 Is the connector of the multifeeder (to the
body) connected properly?
2 Is the leading edge of the copy paper as
far as the registration roller?
3 Are the pickup roller, pickup/feeding
roller, and separation roller mounted in
their correct orientation?
4 Execute the following service mode, and
place paper in the multifeeder. Does the
bit change from 0 to 1?
bit 0 of COPIER>I/O>IP>POC1
5 Execute the following in service mode. Is
the sound of the clutch (CL7) operating
heard?
COPIER>FUNCTION>PART-CHK>CL1
6 Execute the following service mode. Is the
sound of the clutch (CL18) operating heard?
COPIER>FUNCTION>PART-CHK>CL16
7 Execute the following service mode. Does
the multifeeder pickup roller move up and
down?
COPIER>FUNCTION>PART-CHK>SL5
(up)
COPIER>FUNCTION>PART-CHK>SL6
(down)
8 Replace the DC controller PCB. Is the
problem corrected?
Checks
CANON GP605/605V REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Yes/No Action
NO Connect the connector
properly.
YES See "The registration
roller fails to rotate."
NO Mount the roller(s)
correctly?
NO Check the wiring and
the sensor flag; if
normal, replace the
sensor (PS17); i.e., DC
controller PCB J510-
B7, -B8, -B9.
NO Check the wiring; if
normal, replace the
clutch (CL7); i.e., DC
controller PCB J513-
A8, -A9.
NO Check the wiring; if
normal, replace the
clutch (CL18); i.e., DC
controller PCB J513-
A6, A7.
NO Check the wiring and
the link; if normal,
replace the solenoid
(SL6); i.e., DC
controller PCB J510-
10, -11, -12.
YES End.