Service manual

SC TABLE
SM 4-31 G130/G131
SC No. Item Definition Possible Cause
Related
SCs
Troubleshooting Procedure Type
SC 745 Booklet finisher
stack-tray exit
motor error
• The stack-tray-belt home-
position sensor does not
turn off within 394
milliseconds after the stack-
tray exit roller starts to drive
the belts. → The stack-tray
exit motor retries to drive the
belts, but the stack-tray-belt
home-position sensor still
does not turn off within
another 394 milliseconds.
• The stack-tray-belt home-
position sensor does not
turn on within 1,084
milliseconds after the same
home-position sensor turns
off. → The stack-tray exit
motor retires to drive the
belts, but the stack-tray belt
home-position sensor still
does not turn on within
another 1,084 milliseconds.
• Defective stack-tray
exit motor
• Loose connection of
the stack-tray exit
motor
• Defective stack-tray-
belt home-position
sensor
• Loose connection of
the stack-tray-belt
home-position sensor
1. Turn the main switch off and on.
2. Check the connection of the stack-
tray exit motor.
3. Check the connection of the stack-
tray-belt home-position sensor.
4. Replace the stack-tray-belt home-
position sensor.
5. Replace the stack-tray exit motor.
B