Gestetner B003 Service Manual page 196

SERVICE CALL CONDITIONS
Code No.
627 C Communication break error between
BICU and LCT
The BICU cannot communicate with the
LCT unit normally as a result of
receiving a break signal.
630 D SC630 Communication failure with CSS
(RSS)
The communication from the copier
was detected as abnormal at the CSS
center. This error occurs when the
acknowledge signal from the LADP
does not complete normally.
640 D BICU control data transfer sumcheck
error
A sampling of control data sent from the
BICU to the controller reveals a
sumcheck error. Only the logging count
is performed.
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.
B003/B004/B006/B007
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
4-10
Possible Cause
Serial line connecting BICU and LCT
unit unstable
External noise
BICU board and LCT main board
connection defective or loose
LCT interface board defective
BICU board defective
Occurred with a SC call, CC call,
Supply Management call, User call,
or CE call.
Timeout while no response from the
LADP, and signal on the RS-485 line
between PI and LADP is abnormal.
Controller board defective
External noise
BICU board defective
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
SM