Service Call Tables
SM 4-33 D014/D015/D078/D079
Trouble-
shooting
Used toner transport lock
SC488 D
Used toner cannot be
transported to the used toner
bottle.
Blockage in the line to the used
toner bottle
MUSIC sensor error
SC490 D
One or more of the MUSIC
sensors is not functioning
normally.
MUSIC sensor harness loose,
broken, defective
Sensor defective
ITB encoder sensor error
SC495
The ITB encoder sensor
that reads the encoded
strip on the ITB is not
functioning properly.
Sensor dirty
Sensor harness loose, broken,
defective
Sensor out of position because
installed incorrectly
ITB installed incorrectly
MUSIC sensor error
SC496 C
The MUSIC sensor detected an abnormal pattern on the ITB because:
ADC exceeded upper or lower limit.
The pattern used to calculate the amount of skew is abnormal.
The reading of the pattern exceeded the length of time the LED
projected light.
LED light could not be adjusted correctly.
ITB installed incorrectly
Inspect ITB belt for damage, replace
MUSIC pattern abnormal; do a forced process control (SP3821) and
check the result.
MUSIC sensor defective or disconnected
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