Ricoh Aficio AP-4510 G065, Service Manual, Page: 151 / 278

SERVICE CALL CONDITIONS
SM 4-13 G065
T
rouble
-
s
hooting
SC Level Symptom Possible Cause
Self-Diagnostic Error: ASIC 821 B
The ASIC returns an error during the
self-diagnostic test at power on
because the ASIC and CPU timer
interrupts were compared and
determined to be out of range.
•
Controller board defective
Self-diagnostic Error: NVRAM 824 B
The resident non-volatile RAM
returns an error during the self-
diagnostic test at power on.
•
NVRAM damaged or abnormal
•
Backup battery has discharged
•
NVRAM socket damaged
Self-diagnostic Error: RAM 827 B
The resident RAM returned a verify
error during the self-diagnostic test at
power on.
•
Memory malfunction
Self-diagnostic Error: ROM 828 B
The resident read-only memory
returned an error during the self-
diagnostic test at power on.
•
Controller board defective
•
Firmware defective
O
THER
Electronic total count error 900 B
•
The value of the total count has
already exceeded its limit
(9,999,999)
•
During counting, a defect was
detected at the mechanical
counter.
•
NVRAM defective
F-GATE error at write request 951 C
After the IPU receives an F-GATE
signal, it receives another F-GATE
signal (software timeout error)
•
Software defective
•
BICU defective
Printer setting error 954 B
The IPU does not respond with the
settings required to start printer
image processing.
•
Software defective
Memory setting error 955 C
The IPU does not respond with the
settings required to start memory
image processing.
•
Software defective
No ready signal from the polygon
motor. 966
At the start of printing, no ready
signal is received for the polygon
motor from the LD unit.
•
Defective polygon mirror motor
Print image data transfer error 984 B
The image transfer from the
controller to the engine via the PCI
bus does not end within 15 s after
startup.
•
Controller board defective
•
BICU defective
•
Connectors between BICU and
controller loose or defective
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA