Ricoh D129 Service Manual page 534

Self-diagnostics error: ASIC
821 D
[XXXX]: Detailed error code
ASIC error
The write-&-verify check error has occurred in the ASIC.
[0B00]

Defective ASIC device
Replace the controller board.
Self-diagnosis error: ASIC
The CPU checks if the ASIC timer works correctly compared with the CPU
timer. If the ASIC timer does not function in the specified range, this SC code
is displayed.
[0D05]

System firmware problem

Defective RAM-DIMM

Defective controller
Replace the controller board.
Video bridge device (ASIC) error 1
[50A1] The CPU does not detect the video bridge device.

Defective I/F between the video bridge device and controller
Video bridge device (ASIC) register error 1
The CPU detects the video bridge device, but detects error data from the
[50A2]
video bridge device.

Defective I/F between the video bridge device and controller

For more details about this SC code error, execute SP5990 to print an SMC report so
you can read the error code. The error code is not displayed on the operation panel.
SM 6-45
Service Call Conditions
D129/D130