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CBM-710/720 Service Manual
25
1. The motor
does not
rotate.
2. The recording
paper cannot
be cut.
Phenomenon Condition Cause Check Point and Method Troubleshooting
• The motor does not
rotate even if the rotation
command is entered.
• The motor operates
temporarily and stops
when the rotation
command is entered.
• The blade returns on the
way though it attempts
to cut the paper.
• Full cut is normal
• In partial cut, four uncut
portions or more remain
• The blade does not cut
well
1. Abnormality in input power
supply for motor
2. Motor failure
3. Lock due to entrance of foreign
matters into the rotation section
1. Detecting switch failure
1. Inappropriate recording paper
2. Entrance of foreign matters into
the passage of recording paper
1. Deformation of the cutter cover
2. Clogging of paper wastes or oil
shortage of the blade sliding
section
1. Damage or abrasion of the
movable blade
• Make sure that the input power
supply is furnished. Check the both
terminals of the motor with the
tester, etc.
• Apply the rated voltage to the both
terminals of the motor and check if
the motor rates.
• Detach the cutter cover to check the
movable section.
• Check the switch output with a
tester, etc.
• Measure the thickness of the
recording paper.
(0.1 mm or less).
• Check the paper passage.
• Detach the cutter cover to check its
warping, etc.
• Detach the cutter cover to check the
paper dust.
• Dismount the movable blade to
check its edge.
• If the voltage is out of rating, correct the
power supply circuit.
• Replace the motor if not rotate.
• Eliminate the foreign matters.
• Replace the switch if an abnormality is
found.
• Use the specified recording paper.
• Eliminate the foreign matters.
• Replace the cover if deformed.
• Eliminate the paper dust and lubricate.
• Replace the blade if damaged or worn.