9 March 2004 SERVICE CALL CONDITIONS
4-5
Trouble-
shooting
No.
Definition
Symptom Possible Cause
Fusing lamp overheat error 545 A
After the fusing temperature reaches
the target, the fusing lamp remains on
for 12 seconds.
•
Defective thermistor
• Incorrect installation of the thermistor
•
Defective power supply unit
Unstable fusing temperature 546 A
While the fusing lamp is on, the fusing
temperature varies 50
°
C or more within
one second; and this occurs two
consecutive times.
• Defective thermistor
•
Incorrect installation of the thermistor
• Defective power supply unit
Zero cross signal malfunction 547 B
The zero cross signal is not detected
within five seconds after the main
power switch is turned on. Or, the zero
cross signal is not detected within one
second after operation begins.
•
Defective power supply unit
• Defective BICU
Exhaust fan motor error 590 B
The exhaust fan motor is locked for five
seconds.
•
Loose connection of the exhaust fan
motor
• Overload
CSS communication error 630 D
An error occurs while the copier is
trying to communicate with the CSS.
• Communication error in the public line
Accounting error 1 632 C
An error occurs during communication
with the MF accounting device.
• Defective accounting device
•
Loose connection
Accounting error 2 633 C
After the controller establishes
communication with the MF accounting
device, the MF accounting device
sends a brake signal.
• Defective accounting device
•
Loose connection
Accounting RAM error 634 C
An error occurs in the backup RAM for
the MF accounting device.
• Defective accounting device
Accounting battery error 635 B
An error occurs in the battery of the MF
accounting device.
• Defective accounting device
Engine start error 670 B
The controller does not receive all or
some of the BICU signals within 70
seconds during startup; or the controller
detects the BICU stopping
unexpectedly.
•
Defective BICU
• Defective controller
• Loose connection
ADF gate error 1 760 B
The ADF sends the FGATE signal
before it is requested to scan originals.
•
Defective ADF board
• Defective input/output board
• Loose connection
ADF gate abnormal 2 761 B
The ADF does not send the FGATE
signal within 30 seconds after the ADF
starts scanning.
• Defective ADF connector
•
Defective SBU board
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