Ricoh SP 8400DN Field Service Manual page 1293

SC Tables: SC6xx (Communication and Others)
SC621-01 to SC687-00
SC No. Type
SC621- D Finisher communication error
01
SC621- D Mailbox communication error
02
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Check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do
the following steps. Check if the SC reoccurs by cycling the power after each step.
1.
2.
3.
4.
5.
SC No. Type
SC622 D Paper Bank Communication Error
SC622- D Paper Bank 1 Communication Error (M494)
11
SC622- D Paper Bank 1 Communication Error (M494)
12
SC622- D Paper Bank 1 Communication Error (M496)
31
Error Name/Error Condition/Major Cause/Solution
When the communication line has opened and the machine is in a normal
communication state, it has received a break signal from a connected device.
There is not any response within 100 ms after the data frame transmission, and retries
have failed with timeout error for 3 times in a row.
When changing the baud rate after program downloading starts, the machine has failed
to detect the break signal of the finisher or has failed to detect that the break has been
cleared.
Connection error between finisher and main machine.
The finisher-related firmware is not installed properly.
The engine firmware is not installed properly.
Finisher control board defective.
BCU, or IOB defective
Communication error caused by electrostatic noise
Check if all connectors in the finisher/mailbox are connected securely. Reconnect the
connectors if they are disconnected, or loose.
Update the firmware to the latest version.
Check all harnesses in the mailbox or finisher. Replace any harness that is damaged.
Replace the BCU, or IOB.
Replace the controller board of the finisher or the mailbox.
Error Name/Error Condition/Major Cause/Solution
6.Troubleshooting
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