Ricoh LDD280 - Page 242

SERVICE CALL CODE TABLE
C262/C265 4-8 SM
Code Title Conditions Possible Causes
SC725
Paper table motor
lock – LCOT
The paper table upper limit sensor
or lower limit sensor does not
change the status for more than 15
seconds after the paper table motor
on signal is generated.
• Defective sensor
• Defective motor
• Mechanism blocked by
foreign material
ACU
SC818
Watch-dog error While the system program is running,
other processes do not operate at all.
• Defective ACU board
• Software error (ACU)
SC819
Kernel panic error Processing cannot be continued by
kernel
• Software error (ACU)
SC820
Self-Diagnostic
Error: CPU
The central processing unit returned
an error during the self-diagnostic
test.
• ACU board defective
• Software defective (ACU)
SC821
Self-Diagnostic
Error: ASIC
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.
•
ACU board defective
SC822
Self-Diagnostic
Error: HDD
The hard disk drive returned an error
during the self-diagnostic test.
• HDD defective
• HDD connector defective
• ACU board defective
SC823
Self-diagnostic
Error: NIC
The network interface control
returned an error during the self-
diagnostic test.
• Defective ACU board
SC824
Self-diagnostic
Error: NVRAM
The resident non-volatile RAM
returned an error during the self-
diagnostic test.
• NVRAM of ACU board
damaged or abnormal
• ACU board defective
• NVRAM socket damaged
SC826
Self-diagnostic
Error: NVRAM
The NVRAM returned an error during
the self-diagnostic test.
•
NVRAM of ACU board
defective
SC827
Self-diagnostic
Error: RAM
The resident RAM returned a verify
error during the self-diagnostic test.
•
Defective ACU board
SC828
Self-diagnostic
Error: ROM
The resident read-only memory
returned an error during the self-
diagnostic test.
• ACU board defective
• Firmware defective
(ACU)
SC829
Self-diagnostic
Error: DIMM-RAM
The DIMM-RAM returned an error
during the self-diagnostic test.
• DIMM-RAM defective
• ACU board defective
SC835
Self-Diagnostic
Error: Centro
device
Loopback test error.
• Loopback connector not
detected
• IEEE1284 connector
defective
• ACU board defective
SC836
Self-diagnostic
Error: Resident
Font ROM
The resident font ROM returned an
error during the self-diagnostic test.
•
Defective ACU board
SC837
Self-diagnostic
Error: Optional
Font ROM
The optional font ROM returned an
error during the self-diagnostic test.
•
Defective ACU board
SC838
Self-diagnostic
Error: Clock
generator
The setting value of the clock
generator is wrong
• Defective ACU board