Ricoh FT8680 Service Manual page 387

31 July 1995
SC792 - LCT Lower Limit Sensor Failure
Definition:
The main PCB cannot detect the lower limit sensor signal within 20 seconds
after the tray down operation has been started.
Points to check:
•
Lower limit sensor
•
Tray drive motor
•
Tray drive wires
•
Interface PCB
SC900 - Copy Counter Failure
Definition:
The main PCB cannot detect any count confirmation signal from the total
counter or the A3/11" x 17" counter (enabled by SP mode) when the counter
is de-energized.
Points to check:
•
Total counter (A3/11" x 17" counter)
SYSTEM ERROR AND SERVICE CALL CONDITIONS
6-25