2Nd Scanner Home Position Sensornoton; 2Ndscannerhome Position Sensor Notoff - Ricoh FT4430 Service Manual

16 April '88
2A 2ND SCANNER HOME POSITION SENSOR NOT ON
- Possible Causes -
+ Second scanner drive doesn't work properly.
+ Second scanner home position sensor failure.
- Action -
Check the action of the second scanner drive mechanism. Does it move cor-
rectly?
I
Y N
I
Check/repair the drive mechanism.
Test the 2nd scanner home position sensor.
Replace it if defective.
If the above does not work, replace the main board.
2B 2ND SCANNER HOME POSITION SENSOR NOT OFF
- Possible Causes -
+ Second scanner drive doesn't work properly.
+ Second scanner home position sensor failure.
- Action -
Check the action of the second scanner drive mechanism. Does it move cor-
rectly?
Y N
I I
Check/repair the lens drive mechanism.
test the 2nd scanner home position sensor. (Does CN101 -B4 stay HIGH?)
Replace it if defective.
If the above does not work, replace the main board.
(Does CN101 -B4 stay LOW?)
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