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COPYRIGHT
©
1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 10 TROUBLESHOOTING
10–55
Step Checks Actions
1
2
3
NO
NO
YES
NO
Cause
23.The lens fails to move.
Yes/No
Bolt
Lens path
Lens motor (M3)
DC controller PCB
Is the lens drive belt routed correctly?
Is the lens path free of dirt and foreign
object? Does the lens move smoothly when
pushed by hand?
Replace the lens motor. Is the problem
corrected?
Correct the belt, and check the
gears.
Remove any dirt and object;
check for any object that may
come into contact with the
lens. As necessary, clean and
lubricate, or repair.
End.
Check the wiring from the DC
controller PCB to the lens
motor; if normal, replace the
DC controller PCB.
24.The mirror fails to move.
1
2
NO
YES
NO
Turn off the power, and move the mirror
assembly by hand. Does it move smoothly?
Replace the mirror motor. Is the problem
corrected?
Remove any dirt or foreign
object in the mirror path. As
necessary, clean and lubricate
the path.
End.
Check the wiring from the DC
controller PCB to the mirror
motor; if normal, replace the
DC controller PCB.
Actions
ChecksStep
Cause
Yes/No
Mirror path
Mirror motor (M4)
DC controller PCB