Ricoh B089 - Page 416

SERVICE CALL CONDITIONS
B089/B093 7-8 SM
Code No. Symptom Possible Cause
Counter device error 2 Japan Only 633 D
After 3 attempts to send a data frame to
the optional counter device via the
serial communication line, no ACK
signal was received within 100 ms.
• Serial line between the optional
counter device, the relay board and
copier control board is disconnected
or damaged
• Make sure that SP5113 is set to
enable the optional counter device.
Counter device error 3 Japan Only 634 D
A backup RAM error was returned by
the counter device.
• Counter device control board
defective
• Backup battery of counter device
defective
Counter device error 4 Japan Only 635 D
A backup battery error was returned by
the counter device.
• Counter device control board
defective
• Backup battery of counter device
defective
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 abnormal 641 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 error 670 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