Sc800: Overall System - Ricoh MT-C1 Service Manual

15 February 2006

SC800: Overall System

SC No.
800 D Video output transfer does not end (K)
Video signal is sent to the engine
but no command is received within
the prescribed time from the engine
to signal the end of transfer –
output all black.
804 D Video input transfer does not end (K)
Video transfer is requested from the
scanner, but no command is
received within the prescribed time
from the scanner to signal a
response – output all black.
818 C Watchdog error
Control error
819 C Fatal kernel error
Software defective
820 C Self-diagnostic error: CPU
Unexpected external error or
interrupt occurred.
821 C Self-diagnostic error: ASIC
ASIC timer interrupt and CPU timer
interrupt are compared and found
to be out of range.
C
822 Self-diagnostic error: HDD
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 error.
823 C Self-diagnostic error: NIB
• The SUM of the MAC address
written in the SEEP ROM for the
MAC address is calculated and
compared with the stored SUM
and judged NG.
• There is a format error in the
MAC address stored in the SEEP
ROM for the MAC address.
• A loopback error occurs on the
PHY chip of the NIB.
824 C Self-diagnostic error: NVRAM
NVRAM device does not exist, or
NVRAM device is damaged.
825 C Self-diagnostic error: NVRAM (option)
Optional NVRAM is installed, but a
write/verify error occurred.
Symptom
4-29
B064 SERIES SERVICE MODE
Possible Cause
• Controller board defective
• Controller board defective
• System program defective
• Controller board defective
• Optional board defective
• Software defective
• Controller board defective
• Software defective
• Controller board defective
• HDD defective
• HDD harness disconnected, defective
• Controller board defective
• NIB board defective
• Controller board defective
• NVRAM defective
• Controller board defective
• Incorrect NVRAM installed.