Ricoh D017 Service Manual page 417

Service Call Conditions
Self-diagnostic error: ROM
828 D
[XXXX]: Detailed error code
Check sum error 1
[0101] The boot monitor and OS program stored in the ROM DIMM is checked. If
the check sum of the program is incorrect, this SC code is displayed.
Self-diagnostic error: Optional RAM
829 D
[XXXX]: Detailed error code
Verification error
Error detected during a write/verify check for the optional RAM (SDRAM
DIMM).
Loose connection
[0301]
Defective SDRAM DIMM
Defective controller
Turn the main switch off and on.
Replace the SDRAM DIMM.
Replace the controller.
Memory structure data error
The memory structure data error for the optional RAM (SDRAM DIMM) is
detected when the self-diagnostic is executed.
[0302]
Defective RAM DIMM
Defective SPD ROM on RAM DIMM
Defective 12C bus
Replace the RAM DIMM.
D017/D018/D019/D020/D084/D085 3-42 SM Appendix