Citizen Systems CBM-710/720 service manual

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

CBM-710/720 Service Manual