Ricoh B064 SERIES Service Manual page 468

B064 SERIES SERVICE MODE
SC No.
826 C Self-diagnostic error: NVRAM (option NVRAM)
The difference between the 1 s
measured for RTC in the NVRAM
and the 1 s timeout of the CPU is
out of range, or the NVRAM is not
detected.
827 C Self-diagnostic error: RAM
The write/verify check for the RAM
mounted on the board resulted in
an error.
828 C Self-diagnostic error: ROM
• Measuring the CRC for the boot
monitor and operating system
program results in an error.
• A check of the CRC value for
ROMFS of the entire ROM area
results in an error.
829 C Self-diagnostic error: RAM (option)
• A write/verify check of the RAM
mounted on the board results in
a error.
• The SPD value of the entire RAM
DIM is incorrect, or cannot be
read.
Note: RAM is not in use so the
835 C Self-diagnostic error: Centronic device
• Loopback connector is
connected but check results in
an error.
• Loopback connector is
connected but DMA data error
detected.
• Centronic loopback connector is
not connected for detailed self-
diagnostic test.
836 C Self-diagnostic error: Font ROM
A device exists in the font area but
it contains corrupted data.
837 C Self-diagnostic error: Font ROM (option)
A device exists in the font area but
it contains corrupted data.
838 C Self-diagnostic error: Clock Generator
Setup data is read from the clock
generator via the I2C bus but differs
from the prescribed value.
850 B Net I/F error
• Duplicate IP addresses.
• Illegal IP address.
• Driver unstable and cannot be
used on the network.
B064 Series/B140 Series
/B246 Series/D052 Series
CÓPIA NÃO CONTROLADA
Symptom
result is not displayed on the
operation panel.
CÓPIA NÃO CONTROLADA
Possible Cause
• NVRAM defective
• NVRAM installed incorrectly
• Controller board defective
• RAM defective
• Software defective
• Controller board defective
• ROM defective
• Controller board defective
• RAM defective
• Controller board defective
• Centronic loopback connector not
connected correctly
• Centronic loopback connector defective
• Font device defective
• Font device defective
• Controller board defective
• IP address setting incorrect
• NIB (PHY) board defective
• Controller board defective
4-30 SM