Ricoh A-C4 - Page 212

20 June 2005 SERVICE CALL CONDITIONS
4-11
Trouble-
shooting
Communication command error
between BICU and ADF
612 D
The BICU sends a command to the ADF
main board that it cannot execute.
• Abnormal operation performed by
software
Communication timeout error between
BICU and finisher or mailbox
620 D
The BICU cannot receive a response
within 100 ms after 3 attempts after
sending data to the finisher or mailbox.
• Serial line connecting BICU and
finisher unstable
• External noise
• BICU board and finisher main board
connection defective or loose
• Finisher main board defective
• BICU board defective
Communication timeout error between
BICU and finisher or mailbox
621 D
A break (low) signal was received from
the finisher or the mailbox.
• Serial line connecting BICU and
finisher unstable
• External noise
Communication timeout error between
BICU and paper tray unit
623 D
The BICU cannot receive a response
within 100 ms after 3 attempts after
sending data to the paper tray unit.
• Serial line connecting BICU and
paper tray unit unstable
• External noise
• BICU board and paper tray main
board connection defective or loose
• Paper tray main board defective
• BICU board defective
Communication break error between
BICU and paper tray unit
624 D
The BICU cannot communicate with the
paper tray unit normally as a result of
receiving a break signal.
• Serial line connecting BICU and
paper tray unit unstable
• External noise
• BICU board and LCT main board
connection defective or loose
• Optional paper feed unit interface
board defective
• BICU board defective
Communication timeout error between
BICU and LCT
626 D
The BICU cannot receive a response
within 100 ms after 3 attempts after
sending data to the LCT.
• 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
Communication break error between
BICU and LCT
627 D
The BICU cannot communicate with the
LCT unit normally as a result of
receiving a break signal.
• 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
Communication failure with CSS (RSS) 630 D
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 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.