Ricoh FT4480 Field Service Manual page 228

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
correctly?
Y N
I
Check/repair the lens drive mechanism.
Test the 2nd scanner home position sensor. (Does CN101-B2 stay LOW?)
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
- Action -
Check the action of the second scanner
correctly?
Y N
I
Check/repair the lens drive mechanism.
Test the 2nd scanner home position sensor. (Does CN101-B2 stay HIGH?)
Replace it if defective.
If the above does not work, replace the main board.
failure
drive mechanism. Does it move
9-23
15 March 1987