Ricoh FT8680 Service Manual page 369

31 July 1995
SC144 - Mirror Unit Drive Failure
Definition:
The motor control PCB cannot detect the mirror unit home position sensor
signal or mirror unit drive encoder signal.
Points to check:
•
Mechanical interference with the mirror unit drive
•
Mirror unit drive motor
•
Mirror unit home position sensor
•
Mirror unit drive encoder
•
Motor control PCB
•
DC motor drive PCB (Fuse: F6)
SC146 - Lens Horizontal Drive Failure
Definition:
The motor control PCB cannot detect the lens horizontal home position
sensor signal or horizontal drive encoder signal.
Points to check:
•
Mechanical interference with the lens horizontal drive
•
Lens horizontal drive motor
•
Lens horizontal home position sensor
•
Lens horizontal drive encoder sensor
•
Motor control PCB
•
DC motor drive PCB (Fuse: F5)
SYSTEM ERROR AND SERVICE CALL CONDITIONS
6-7