CHAPTER 10 TROUBLESHOOTING
COPYRIGHT © 1999 CANON INC. CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
10-52
24.
indicator does not go ON
25.
indicator does not go OFF
Action
Push the cassette in fully.
Check the wiring from
the DC controller PCB to
Q1 or Q7. If it is normal,
replace Q1 or Q7.
Replace the DC control-
ler PCB.
Result
No
No
Yes
Check
Is the cassette pushed fully into the
holder?
Is the multifeeder paper sensor (Q1) or
cassette paper sensor (Q7) functioning
normally?
(See p. 10-20.)
Procedure
1
2
Cause/Problem
area
Cassette
Multifeeder
paper
sensor (Q1)
Cassette paper
sensor (Q7)
DC controller
PCB
Action
Check the wiring from
the DC controller PCB to
the cassette size sensor
PCB. If it is normal, re-
place the cassette size
sensor PCB.
Check the wiring from
the DC controller PCB to
Q1 or Q7. If it is normal,
replace Q1 or Q7.
End.
Replace the DC control-
ler PCB.
Result
Yes
No
Yes
No
Check
Does the indicator remain OFF when the
cassette is removed?
Is the multifeeder paper sensor (Q1) or
cassette paper sensor (Q7) performing nor-
mally?
(See p. 10-20.)
Does the trouble diappear if the controll
panel is replaced?
Procedure
1
2
3
Cause/Problem
area
Cassette size
sensor PCB
Multifeeder
paper
sensor (Q1)
Cassette paper
sensor (Q7)
Control panel
DC controller
PCB
Содержание NP6317
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