Ricoh G147 Service Manual page 172

Self-diagnostic Error: NIC
823 B
The network interface board returned
an error during the self-diagnostic test.
Self-diagnostic error 4: NVRAM
One or more of the following
conditions exist:
824 D
NVRAM not present.
NVRAM damaged
NVRAM socket damaged
Self-diagnostic Error: NVRAM/Optional
NVRAM
826 D
The NVRAM or optional NVRAM
returned an error during the
self-diagnostic test.
Self-diagnostic Error: RAM
827 D
The resident RAM returned a verify
error during the self-diagnostic test.
Self-diagnostic error 7: ROM
D Measuring the CRC for the boot
828
monitor and operating system program
results in an error.
G147
command from the ASIC to the HDDs
Network interface board
defective (replace the controller
board)
Controller board defective
NVRAM defective
Controller board defective
NVRAM backup battery
exhausted
NVRAM socket damaged
Note: In every case, the controller
board must be replaced.
Make sure NVRAM is seated
correctly in its socket
Replace the NVRAM on the
controller board
Update controller firmware
again
Replace RAM DIMM
Software defective
Controller board defective
ROM defective
4-22 SM