Ricoh B291 Service Manual page 243

823 B Self-diagnostic Error: NIC
The network interface board returned an
error during the self-diagnostic test.
824 D Self-diagnostic error 4: NVRAM
NVRAM device does not exist, NVRAM device is
damaged, NVRAM socket damaged
826 D Self-diagnostic Error: NVRAM/Optional NVRAM
The NVRAM or optional NVRAM returned an error
during the self-diagnostic test.
827 D Self-diagnostic Error: RAM
The resident RAM returned a verify error
during the self-diagnostic test.
828 D Self-diagnostic error 7: ROM
• Measuring the CRC for the boot
monitor and operating system
program results in an error.
• A check of the CRC value for
ROMFS of the entire ROM area
results in an error.
NOTE: For more details about this SC 833, SC834 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. The additional error codes (0F30, 0F31, etc. are listed in the
SMC report.
829 B Self-diagnostic Error: Optional RAM
The optional RAM returned an error
during the self-diagnostic test.
838 D Self-diagnostic Error: Clock Generator
A verify error occurred when setting data
was read from the clock generator via
the I2C bus.
SM
CÓPIA NÃO CONTROLADA
• Software defective
• Controller board defective
• ROM defective
4-21
CÓPIA NÃO CONTROLADA
SERVICE CALL CONDITIONS
• Network interface board defective
• Controller board defective
• NVRAM defective
• Controller board defective
• NVRAM backup battery
exhausted
• NVRAM socket damaged
• Make sure NVRAM is
seated correctly in its
socket
• Replace the NVRAM on
the controller board
• Update controller firmware again
• Replace RAM DIMM
• Replace the optional memory board
• Controller board defective
• Replace the controller board
B291/B295/B296/B297