Ricoh D129 - Page 536

Service Call Conditions
SM 6-47 D129/D130
Trouble-
shooting
826 D Self-diagnostic Error: RTC/optional NVRAM
[1501]
The one second counted by the RTC is different from the one second
counted by the CPU on the controller.
 Defective RTC device
[15FF]
The RTC device is not detected.
 Defective RTC device
 NVRAM without RTC installed
 Discharged backup battery
827 D
Self-diagnostic error: Standard SDRAM DIMM
[XXXX]: Detailed error code
[0201]
Verification error
Error detected during a write/verify check for the standard RAM (SDRAM
DIMM).
 Loose connection
 Defective SDRAM DIMM
 Defective controller
[0202]
Resident memory error
The SPD values in all RAM DIMM are incorrect or unreadable.
 Defective RAM DIMM
 Defective SPD ROM on RAM DIMM
 Defective 12C bus
Replace the RAM DIMM.