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COPYRIGHT
©
1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 10 TROUBLESHOOTING
10–57
26.The pre-exposure lamp fails to turn on.
Pre-exposure lamp
(LA2)
DC controller PCB
1 YES
NO
Set the meter range to 30 VDC, and connect
the probes to J104-A6 (+) and J104-7 (-) on
the DC controller PCB. Does the voltage
change from 0 to 24 V when the Start key is
pressed?
Check the wiring from the DC
controller PCB to the pre-
exposure lamp; if normal,
replace the pre-exposure lamp.
Replace the DC controller
PCB.
Actions
ChecksStep
Cause
Yes/No
1 YES
NO
27.The blank exposure lamp fails to turn on.
Actions
ChecksStep
Cause
Yes/No
Blank exposure lamp
(LA3)
DC controller PCB
Replace the blank exposure lamp. Is the
problem corrected?
End.
Check the wiring from the DC
controller PCB to the blank
exposure lamp; if normal,
replace the DC controller
PCB.