Ricoh D129 Service Manual page 538

833 C Self-diagnostic error 8: Engine I/F ASIC
ASIC (Mandolin) for system control could not be detected. After the PCI
[0F30]
configuration, the device ID for the ASIC could not be checked.
[0F31]
Replace the IPU.
ASIC (Mandolin) for system control could not be detected. After the PCI
configuration, the device ID for the ASIC could not be checked.
[0F41]
Replace the IPU.
Could not initialize or read the bus connection.
[50B1] Check for loose connections at the mother board.
Replace the IPU.
Value of the SSCG register is incorrect.
[50B2] Check for loose connections at the mother board.
Replace the IPU.
SM 6-49
Service Call Conditions
D129/D130