Citizen CBM-710, Service Manual

Page: 27 / 69

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
T
roubleshooting
•
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.