E208; E210 - Canon NP7160 Service Manual

CHAPTER 10 TROUBLESHOOTING

10. E208

Cause
Step
Mirror home
position sensor
(PS3)
DC controller PCB

11.E210

Cause
Step
Lens home position
sensor (PS2)
DC controller PCB
10–48
COPYRIGHT © 1998 CANON INC.
Checks
1 Does the mirror move when the power
switch is turned on?
2 Is the mirror home position sensor normal?
(See the instructions on how to check the
photointerrupters.)
Checks
1 Turn on the power switch. Does the lens
move?
2 Is the lens home position sensor normal?
(See the instructions on how to check the
photointerrupters.)
Yes/No
Yes/No
CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Actions
NO See "The mirror fails to
move."
NO Check the wiring from the DC
controller PCB to the sensor;
if normal, replace the sensor.
YES Replace the DC controller
PCB.
Actions
NO See "The lens fails to move."
NO Check the wiring from the DC
controller PCB to the sensor;
if normal, replace the sensor.
YES Replace the DC controller
PCB.