CHAPTER 11 TROUBLESHOOTING
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
11-105
3
The lifter fails to move up. (pedestal)
Cause
Deck
Lifter cable
Spring, lever
Pedestal motor
(M1)
Deck open
sensor (PS7)
Pedestal motor
(M1)
Pedestal
controller PCB
Deck lifter
position sensor
(PS5)
Deck lifter drive
clutch (CL4)
Pedestal
controller PCB
DC controller
PCB
Checks
Is the deck set properly?
Is the lifter cable routed properly?
Push down the pick-up roller
releasing lever with a finger. Does
the pick-up roller move down?
Does the pedestal motor rotate?
Set the meter to the 12VDC
range, and connect its probes to
J110-B7 (+) and J110-B6
(-; DEOP*) on the pedestal PCB.
Does the voltage change from 0 to
about 5 V when the deck is set?
Set the meter to the 100VDC
range, and connect its probes to
J109-1 (+; PEDMD) and J109-4 (-)
on the pedestal controller PCB.
Does the voltage change from 0 V
to 24 V when the deck is set?
Set the meter to the 30VDC
range, and connect its probes to
J110-A11 (+; DEL) and J110-A10
(-) on the pedestal controller
PCB.Is the voltage 0V when the
deck is pulled out, and about 5V
when the deck is set?
Set the meter to the 30VDC
range, and connect its probes to
J110-B11 (+) and J110-B12
(-; CL4D) on the pedestal
controller PCB. Does the voltage
change from 0 V to about 24 V
when the deck is set?
Replace the pedestal controller
PCB. Is the problem corrected?
Step
1
2
3
4
5
6
7
8
9
YES/N
NO
NO
NO
YES
NO
YES
NO
YES
YES
YES
NO
<None>Action
Re-set it.
Re-route it.
Remove the pick-up
assembly, and check the
spring and the lever.
Go to step 7.
Check the wiring from
the pedestal controller
PCB to the sensor; if
normal, replace the
sensor.
Check the wiring from
the pedestal controller
PCB to the motor; if nor-
mal, replace the motor.
Replace the pedestal
controller PCB.
Check the wiring from
the pedestal controller
PCB to the clutch; if nor-
mal, replace the sensor.
Check the wiring from
the pedestal controller
PCB to the clutch; if nor-
mal, replace the clutch.
End.
Replace the DC
controller PCB.
Содержание NP6330
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