Canon GP605 Service Manual page 699

67 The lifter fails to move up. (cassette pickup)
Cause Step
Cassette size
detecting switch
Latch (cassette)
Spring lever
Cassette open/
closed sensor
Lifter motor
DC controller
PCB
COPYRIGHT © 1999 CANON INC.
1 Is the size of the cassette indicated on the
message display?
2 Is the movement of the open button on the
cassette normal?
3 Push down the pickup roller releasing
lever with your finger. Does the pickup
roller move down?
4 Is the voltage of the following connectors
on the DC controller PCB about 5 V when
the cassette is slid in?
cassette 3 (PS40): J515-B5
cassette 4 (PS45): J517-B5
5 Turn on the main power switch and the
control panel power switch. Set the meter
to the 30 VDC range, and connect the -
probe to ground and the + probe to the
following jacks. Does the voltage change
from about 0 to 24 V when the cassette is
slid in?
cassette 3 (M16): J516-A4
cassette 4 (M17): J516-B1
CANON GP605/605V REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
Checks Yes/No Action
NO Check the cassette size
detecting switch.
NO Mount the button
properly.
NO Remove the pickup
assembly, and check
the spring and lever.
NO Check the sensor flag
and the wiring; if
normal, replace the
sensor.
YES Remove the lifter
motor assembly, and
check the gears; if
normal, replace the
motor.
NO Replace the DC
controller PCB.
13-107