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SERVICE CALL CONDITIONS
SC
Level
542
A
Fusing temperature warm-up error
• Fusing temperature does not
reach fusing standby temperature
of 45°C (113°F) within 14 s at
main power on or closing the front
cover.
•
20 seconds after reaching 50°C
the fusing roller does not reach
warm-up temperature.
543
A
Fusing overheat error (software
detection)
Fusing temperature of over 230°C
(446°F) is detected for 5 s by the
fusing thermistors at center or either
end of the fusing roller.
544
A
Fusing overheat error (hardware
circuit detection)
Dual-monitor circuitry of the BICU
detects an extremely high
temperature of 240°C (464°F) and
trips the relay circuit off.
545
A
Fusing lamp remains on
After reaching warm-up temperature
with main motor on, the end fusing
lamp remains on at full power for 15
s, or the center fusing lamp remains
on at full power for 10s
546
A
Fusing ready temperature unstable
After reaching warm-up temperature,
temperature fluctuations of 50°C
(122°F) within 1 s occur 2 times or
more.
547
B
Zero cross signal malfunction
The applied power supply ac
frequency detection is over 66 Hz or
below 45 Hz, and the zero cross
signals are not detected within 500
ms after the main power on.
548
A
Fusing unit installation error
The machine cannot detect the
fusing unit when the front cover and
right cover are closed.
C
OMMUNICATION AND
620
C
Communication timeout error
between BICU and finisher or
mailbox
The BICU does not receive a
response after 3 attempts within 100
ms to send data to the finisher or
mailbox.
G065
CÓPIA NÃO CONTROLADA
Symptom
C
ONTROL
4-8
CÓPIA NÃO CONTROLADA
Possible Cause
• Fusing lamp defective
• Poor fusing unit connector
• Thermistor warped or broken
• Thermostat has tripped
• BICU defective
• Power supply board defective
• Power supply unit defective
• I/O board (IOB) defective
• BICU defective
• Fusing thermistor defective
• Power supply unit defective
• I/O board (IOB) defective
• BICU defective
• Fusing thermistor defective
• Thermistor out of position.
• Thermistor connection loose
• Fusing unit connector loose
• Power supply board defective
• Noise on the ac power line
• Fusing unit is not installed, or is
installed incorrectly
• Fusing unit connection loose
• Serial line connecting BICU and
finisher unstable
• External noise
• BICU board and finisher main
board connection defective or
loose
• Finisher main board defective
• BICU board defective
SM
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