Canon Image Reader-A1 iR5000i Service Manual page 689

4.2.4 The lifter fails to move up (pickup from front deck)
Gear, Lever
1) Remove the deck, and move up the lifter by hand. Does it move
NO:
Spring, Lever
2) Push up the pickup roller releasing lever with a finger. Does the
NO:
Right deck open/closed sensor (PS5), Left deck open/closed sensor (PS9)
3) When the deck is inserted, is the voltage of the following connectors
NO:
Right deck limit sensor (PS8), Left deck limit sensor (PS12)
4) Is the voltage of the following connectors on the DC controller PCB
NO:
Right deck lifter motor (M5), Left deck lifter motor (M4), DC controller PCB
5) Turn on the main power switch, and set the meter range to 30 VDC;
YES: Check the wiring and the motor drive PCB; if normal, replace the
NO:
4.2.5 The lifter fails to move up (pickup from cassette)
Cassette size detecting switch, Service mode
1) Is the size of the cassette indicated on the control panel?
NO:
COPYRIGHT © 2001 CANON INC.
CHAPTER 4 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
smoothly?
Check the gear and the lever.
pickup roller move down?
Remove the pickup assembly, and check the springs and the lever.
on the DC controller PCB about 5 V?
Sensor
Right deck open/closed sensor
Left deck open/closed sensor
Check the sensor flag and the wiring; if normal, replace the sensor.
about 0 V?
Sensor
Right deck limit sensor
Left deck limit sensor
Check the sensor flag and the wiring; if normal, replace the sensor.
then, connect the - probe of the meter to GND and the + probe to
the following connectors of the DC controller PCB. Does the voltage
change from about 0 V to 24 V when the deck is inserted?
Motor
Right deck lifter motor
Left deck lifter motor
motor.
Replace the controller PCB.
Check the cassette size detecting switch. Or, check the cassette pa-
per size setting in service mode.
2000 2000 2000 2000
+
J112-B2
J115-A14
+
J112-B8
J115-A2
+
J105-13
J105-12
CANON iR5000i/iR6000i REV.0 JUNE 2001
-
J112-B1
J115-A13
-
J112-B7
J115-A1
-
GND
GND
4-41 T