Ricoh Aficio 480W Dolphin-C2 Service Manual page 163

28 April 2005
SC821 C Self-diagnostic error 2: ASIC
The ASIC provides the central point for the control of bus arbitration for CPU
access, for option bus and SDRAM access, for SDRAM refresh, and for
management of the internal bus gate.
0B00
0D05
SC822 C Self-diagnostic error 3: HDD
3003
3004
SC823 C Self-diagnostic error 4: NIC
6101
6104
6105
SC824 C Self-diagnostic error 5: NVRAM
NVRAM device does not exist,
NVRAM device is damaged, NVRAM
socket damaged
Error code 0xffff ffff is returned when
the register Write & Verify check is
executed on the ASIC mounted on
the controller board. The ASIC
controls the ROM and buses for
other devices.
The interrupts of the ASIC and CPU
are not timed correctly.
Check performed when HDD is
installed:
• HDD device busy for over 31 s.
• After a diagnostic command is set
for the HDD, but the device
remains busy for over 6 s.
A diagnostic command is issued to
the HDD device but the result is an
erro
No response to the self-diagnostic
command from the ASIC to the
HDDs
A sum check failure occurred
between the SEEP ROM and the
MAC address. The ROM is
defective or the 12C bus is
disconnected.
The PHY chip is defective, or
ASIC is defective.
The PHY board or ASIC is not
operating normally.
4-11
SERVICE CALL CONDITIONS
• ASIC defective, replace the
controller board
• ASCI timing device defective, or
CPU defective. Replace the
controller board.
• HDD defective
• HDD harness disconnected,
defective
• Controller board defective
• HDD defective
• If the optional NIC is detected,
replace it.
• Replace the controller board.
• Check the interface
connection between the NIC
and the controller board.
• Replace the NIC board.
• Replace the controller board.
• NVRAM defective
• Controller board defective
• NVRAM backup battery exhausted
• NVRAM socket damaged