Ricoh Aficio 2035e - Page 201

SERVICE CALL CONDITIONS
SM 4-15 B135/B138
Trouble
shooting
Code No. Symptom Possible Cause
818 Watch Dog Error
B
While the system program is
running, a bus hold or interrupt
program goes into an eternal loop,
preventing any other programs from
executing.
• System program defective
• Controller board defective
• Peripheral device malfunction
819 B Kernel mismatch error
• Software application error
Self-Diagnostic Error: CPU 820 B
The central processing unit returned
an error during the self-diagnostic
test.
• Controller board defective
• Software defective
Self-Diagnostic Error: ASIC 821 B
The ASIC returned an error during
the self-diagnostic test because the
ASIC and CPU timer interrupts were
compared and determined to be out
of range.
• Controller board defective
Self-Diagnostic Error: HDD 822 B
The hard disk drive returned an error
during the self-diagnostic test.
• HDD defective
• HDD connector defective
• Controller board defective
Self-diagnostic Error: NIB 823 B
The network interface board
returned an error during the self-
diagnostic test.
• Network interface board defective
• Controller board defective
Self-diagnostic Error: NVRAM 824 B
The resident non-volatile RAM
returned an error during the self-
diagnostic test.
• NVRAM damaged or abnormal
• Backup battery has discharged
• NVRAM socket damaged
Self-diagnostic Error:
NVRAM/Optional NVRAM
826 B
The NVRAM or optional NVRAM
returned an error during the self-
diagnostic test.
• NVRAM defective
Self-diagnostic Error: RAM 827 B
The resident RAM returned a verify
error during the self-diagnostic test.
• Memory malfunction
Self-diagnostic Error: ROM 828 B
The resident read-only memory
returned an error during the self-
diagnostic test.
• Controller board defective
• Firmware defective
Self-diagnostic Error: Optional RAM 829 B
The optional RAM returned an error
during the self-diagnostic test.
• RAM DIMM defective
• Controller board defective
835 B Self-Diagnostic Error: Parallel
Interface
• Loopback connector not detected
• IEEE1284 connector defective
• Controller board defective