Lens Home Position Sensor Not On; Lens Home Position Sensor Not Off - Ricoh FT4430 Service Manual

28 LENS HOME POSITION SENSOR NOT ON

- Possible Causes -
+ Lens does not move properly.
+ Lens home position sensor failure.
- Action -
Does the lens move smoothly?
Y N
I
I
Check/repair the Iens drive mechanism.
Test the lens home position sensor. (Does CNI 01 -B3 stay LOW?) Replace it
if defective.
If the above does not work, replace the main board.

LENS HOME POSITION SENSOR NOT OFF

29
- Possible Causes -
+ Lens does not move properly.
+ Lens home position sensor faiiure.
- Action -
Does the lens move smoothly?
I I
N
Y
Check/repair the lens drive mechanism.
Test the lens home position sensor. (Does CN101 -B3 stay HIGH?) Replace it
if defective.
If the above does not work, replace the main board.
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16 April '88