Ricoh MT-C1 Service Manual page 455

15 February 2006
SC No.
821 D 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.
0B0
0
0B0
6
0B1
0
NOTE:
For more details about this SC code 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.
SC No.
822 B Self-diagnostic error 3: HDD
3003
3004
3013
Symptom
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.
ASIC not detected
Failed to initialize or could
not read connection bus.
Data in SHM register
incorrect.
Symptom
Check performed when HDD
is installed:
• HDD device busy for over
31 s.
• After a diagnostic
command is set for Sthe
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
Mandolin does not respond,
the HDD device remains
BUSY for more than 31 s, or
the BUSY signal does not
drop within 6 s after the
diagnostic command is
issued to the HDDs.
4-67
B140/B246 SERIES SERVICE MODE
Possible Cause
• ASIC (controller board defective)
• ASIC defective
• Poor connection between North Bridge
and PCI I/F
• Replace controller board
• Connection bus defective
• SHM defective
• Replace controller board
Possible Cause
• HDD defective
• HDD harness disconnected, defective
• Controller board defective
• HDD defective
• HDD defective
• HDD connector loose or defective
• Controller defective