Ricoh U-C1 B051 Service Manual page 165

SERVICE CALL
No.
Definition
810 B Startup without video input end error (B)
Video transfer to the engine is
started, but a video transmission end
command is not issued by the engine
within the specified time.
818 B Watchdog error
While the system program is running,
no other programs can run (due to a
bus hold or endless loop).
819 B Kernel abnormal end error
A HDD error or a software error has
occurred, terminating the SCS
process, gwinit process, and finally
the kernel program.
A system process has exhausted the
RAM.
820 B Self-Diagnostic Error: CPU
An unexpected exception or
interruption has occurred.
821 B Self-Diagnostic Error: ASIC
The ASIC returned an error during the
self-diagnostic test, because the
ASIC and CPU timer interrupts are
compared and determined to be out
of range.
822 B Self-Diagnostic Error: HDD
The hard disk drive returned an error
during the self-diagnostic test.
823 B Self-diagnostic Error: NIB
The network interface board returned
an error during the self-diagnostic
test.
824 B Self-diagnostic Error: NVRAM
The resident non-volatile RAM
returned an error during the self-
diagnostic test.
826 B Self-diagnostic Error: RTC/Optional NVRAM
The RTC (real time clock) or optional
NVRAM returned an error during the
self-diagnostic test.
827 B Self-diagnostic Error: RAM
The resident RAM returned a verify
error during the self-diagnostic test.
828 B Self-diagnostic Error: ROM
The resident read-only memory
returned an error during the self-
diagnostic test.
829 B Self-diagnostic Error: Optional RAM
The optional RAM returned an error
during the self-diagnostic test.
Symptom
4-14
Possible Cause
• Defective controller board
• Defective controller board
• HDD error
• Software application error
• RAM shortage
• Defective controller board
• Software defective
• Defective controller board
• HDD defective
• HDD connector defective
• Defective controller board
• Network interface board defective
• Defective controller board
• NVRAM damaged or abnormal
• Backup battery has discharged
• NVRAM socket damaged
• RTC defective
• NVRAM defective
• Memory malfunction
• Defective controller board
• Firmware defective
• RAM DIMM defective
• Defective controller board
26 July 2002