Ricoh B079 Service Manual page 209

Code No.
641 D BICU control data transfer abnormal
A sampling of the control data sent from
the BICU reveals an abnormality.
670 B Engine response error
After powering on the machine, a
response is not received from the
engine within the specified time.
672 B Controller-to-operation panel
communication error at startup
After powering on the machine, the
communication circuit between the
controller and the operation panel is not
opened, or communication with
controller is interrupted after a normal
startup.
690 A GAVD block I
An error is detected in the GAVD
communication I
the GABIC2.
691 A GAVD FCI block I
An error is detected in the FCI
communication I
the GABIC2.
692 A CDIC GAVD block I
An error is detected in the CDIC
communication I
the GABIC2.
700 B ARDF original pick-up malfunction
After the pick-up motor is turned on, the
original stopper HP sensor is not
detected.
701 B ARDF original pick-up/paper lift
mechanism malfunction
The original pick-up HP sensor does
not activate three times consecutively
after the pick-up motor has turned on.
722 B Finisher jogger motor error
The finisher jogger HP sensor does not
return to the home position, or move out
of the home position, within the
specified time.
724 B Finisher staple hammer motor error
Stapling does not finish within 600 ms
after the staple hammer motor turned
on.
SM
CÓPIA NÃO CONTROLADA
Symptom
2
C bus error
2
C control register of
2
C bus error
2
C control register of
2
C bus error
2
C control register of
4-11
CÓPIA NÃO CONTROLADA
SERVICE CALL CONDITIONS
Possible Cause
Controller board defective
External noise
BICU board defective
BICU installed incorrectly
BICU defective
Controller board defective
Controller stall
Controller board installed incorrectly
Controller board defective
Operation panel connector loose or
defective
2
I C bus on BICU defective
2
I C bus on BICU defective
2
I C bus on BICU defective
Original stopper HP sensor (output
abnormal)
Pick-up motor defective (not rotating)
Timing belt out of position
ARDF main board defective
Original pick-up HP sensor defective.
Pick-up motor defective
ARDF main board defective
Jogger HP sensor defective
Jogger motor defective
Staple jam
Stapler overload caused by trying to
staple too many sheets
Staple hammer motor defective
B079/B082