Ricoh 4051 Service Manual

B064 SERIES SERVICE MODE
B064 Series/B140 Series/G126 4-24 SM
SC600: Data Communication
SC No. Symptom Possible Cause
Communication error between BCU and scanner unit 601 D
• BCU does not communicate with
scanner unit within 0.8 s after
power on.
• BCU does not detect a break
signal after connecting to
scanner unit.
• Communication error detected 3
times.
• Serial line connection unstable
• External noise on the line
BCU ↔ ADF communication/timeout abnormal 610 D
After 1 data frame is sent to the
ADF, an ACK signal is not received
within 100 ms, and is not received
after 3 retries.
• Serial line connection unstable
• External noise on the line
BCU ↔ ADF communication/break reception abnormal 611 D
During communication a break
(Low) signal was received from the
ADF.
• Serial line connection unstable
• Harness disconnected or defective
BCU ↔ ADF communication/command abnormal 612 D
An command that cannot be
executed was sent from the main
machine to the ADF.
• A software error, result of an abnormal
procedure.
BCU ↔ ADF communication/timeout error 620 D
After 1 data frame is sent to the
finisher MBX, an ACK signal is not
received within 100 ms, and is not
received after 3 retries.
• Serial line connection unstable
• External noise on the line
BCU ↔ Finisher communication/break error 621 D
During communication with the
finisher MBX, the BCU received a
break (Low) signal from the finisher.
• Serial line connection unstable
• External noise on the line
BCU ↔ Tray 1~3 communication/timeout error 623 D
After 1 data frame is sent to the
trays, an ACK signal is not received
within 100 ms, and is not received
after 3 retries.
• Serial line connection unstable
• External noise on the line
BCU ↔ Tray 1~3 communication/break reception error 624 D
During communication with the
finisher trays, the BCU received a
break (Low) signal.
• Serial line connection unstable
• External noise on the line
BCU ↔ LCT communication/timeout error 626 D
After 1 data frame is sent to the
LCT, an ACK signal is not received
within 100 ms, and is not received
after 3 retries.
• Serial line connection unstable
• External noise on the line
BCU ↔ LCT communication/break reception error 627 D
During communication with the
LCT, the BCU received a break
(Low) signal.
• Serial line connection unstable
• External noise on the line
CSS (RSS) communication error between line adapter and CSS center 630 D
Japan only

Ricoh 4051 Specifications

General

Brand	Ricoh
Model	4051
Category	All in One Printer
Language	English