Ricoh D131 Service Manual page 474

SC161-01 D IPU error (LSYNC abnormal)
The error result of self-diagnostic by the ASIC on the BICU is
detected.
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SC161-02 D IPU error (Ri response abnormal)
The machine detects an error during an access to the Ri.
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SC161-03 D IPU error (Aruru operation abnormal)
The IPU fails to configure or initialize the DRAM.
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Copy data security unit error
D
The copy data security option is installed by not operating correctly.
SC165
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Copy data security card corrupted
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The board is not installed or the board is defective
SM Appendix
Defective BICU
Defective connection between BICU and SBU
Check the connection between BICU and SBU.
Replace the BICU.
Defective BICU board
Replace the BICU board.
Defective BICU board
Replace the BICU board.
2-7
SC100: Scanning
D131/D132/D133