Ricoh Russian-C2a - Page 292

SERVICE CALL CONDITIONS 10 August, 2001
7-6
Code No. Symptom Possible Cause
Communication timeout error between
SBCU and finisher
620 B
The SBCU cannot receive a response
within 100 ms after 3 attempts after
sending data to the finisher.
• Serial line connecting SBCU and
finisher unstable
• External noise
• SBCU board and finisher main board
connection defective or loose
• Finisher main board defective
•
SBCU board defective
Communication timeout error between
SBCU and finisher
621 B
A break (low) signal was received from
the finisher.
• Serial line connecting SBCU and
finisher unstable
•
External noise
Communication failure with CSS (RSS)630 C
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.
• Occurred with an SC call, CC call,
supply management call, user call, or
CE call.
•
Timeout while no response from the
LADP, and abnormal signal on the
RS-485 line between PI and LADP.
SBCU control data transfer checksum
error
640 C
A sampling of control data sent from the
SBCU to the controller reveals a
checksum error. Only the logging count
is performed.
• Controller board defective
• External noise
•
SBCU board defective
SBCU control data transfer abnormal641 C
A sampling of the control data sent from
the SBCU reveals an abnormality.
• Controller board defective
• External noise
•
SBCU board defective
Communication timeout error between
SBCU and duplex unit
650 B
The SBCU cannot receive a response
within 1 second from the duplex unit.
• Serial line connecting SBCU and
duplex unit unstable
• External noise
• SBCU board and duplex main board
connection defective or loose
• Duplex main board defective
•
SBCU board defective
Engine response error670 D
After powering on the machine, a
response is not received from the
engine within 30 seconds.
• SBCU installed incorrectly
• SBCU defective
• Controller board defective
Controller-to-operation panel
communication error at startup
672 D
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.
• Controller stall
• Controller board installed incorrectly
• Controller board defective
•
Operation panel connector loose or
defective
Finisher jogger motor error (500-sheet
finisher)
720 B
The finisher jogger H.P sensor remains
de-activated for a certain time when
returning to home position.
The finisher jogger H.P sensor remains
activated for a certain time when
moving away from home position.
• Jogger H.P sensor defective
• Jogger motor defective