Ricoh D131 Service Manual page 557

SC900: Miscellaneous
Recovery Procedure 4
If "Recovery Procedures 1 to 3" fail to correct the problem, replace the HDD.
SC910
SC911
SC912
SC913 B
SC914
SC915 A
External Controller Error 6
While EAC (External Application Converter), the conversion module,
was operating normally, the receipt of a power line interrupt signal
from the FLUTE serial driver was detected, of BREAK signal from
SC919 B
the other station was detected.
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D131/D132/D133
External Controller Error 1
External Controller Error 2
External Controller Error 3
External Controller Error 4
External Controller Error 5
The external controller alerted the machine about an error.
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For more, refer to the instructions for the external controller.
External Controller Error 6
Egret board error
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The external controller alerted the machine about an error.

Replace the Egret controller board.
Power outage at the EFI controller.
EFI controller was rebooted.
Connection to EFI controller loose.
Cycle the machine off/on
2-90
GW
SM Appendix