4-42 Confidential
Problems due to machine malfunction
Check Possible causes Problems that may result
The spring plates of the ADF parts
are deformed.
Documents will stop halfway
through feeding.
ADF
The ADF parts are deformed or
worn.
Two or more sheets of
documents will be fed through
at once.
Document rear
sensor
- The document rear sensor is
defective.
- The document rear sensor
actuator is deformed.
Documents will stop halfway
through feeding or the machine
will not be able to recognize
them.
ADF motor
The ADF motor does not rotate.
Documents will not be able to
be drawn in.
Main PCB The motor driver IC is defective. Documents will not be able to
be drawn in.
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