SERVICE CALL CONDITIONS
SM 4-31 B234/B235/B236/D101/D102/D103
Trouble-
shooting
Zero-Cross Signal Over
SC557 C
Noise was detected on the
power supply line.
• Cycle the machine off/on
• If the problem continues, install a noise filter
Fusing Unit Jam Error
SC559 A
The paper cooling job time
sensor detected paper late for 3
counts.
This SC only occurs if SP1159 is
on, and a jam occurred in the
fusing unit for three consecutive
sheets of paper.
• Remove the paper that is jammed in the
fusing unit. Then make sure that the
fusing unit is clean and has no obstacles
in the paper feed path.
Double-Feed LED Adjustment Error
SC585 C
The calibration of the double-feed LED
for the paper type failed reach the target
voltage. The print job completed without
the double-feed detection operating. The
target voltages are:
• Normal paper 3.0V±1%
• Translucent paper: 3.8V±2%
• OHP: 4.0V±2%
• Double-feed sensor/LED dirty
• Clean the sensor and the paper
registration area
• Sensor/LED connector loose,
broken, defective
Toner Bank Motor Error
SC592 B
An abnormal signal was
received from the toner
bank motor.
• Toner bank motor defective
• Bank motor connector loose
• Mechanical overload on the drive mechanism
Toner Suction Motor Replace Alert
SC593 B
The total operation time of the
motor exceeded 600 hours.
Note: A near-end message
appears on the operation panel
when the service life of the
motor exceeds 570 hours.
• The toner suction motor has reached the
end of its service life.
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