Troubleshooting; Troubleshooting Procedure; Troubleshooting Guide - Citizen CBM-270 Service Manual

4. TROUBLESHOOTING

4.1

Troubleshooting Procedure

If the printer has a trouble, confirm its phenomenon, determine a defective part according to 4.2
Troubleshooting Guide, and then, repair it in the specified manner.
• Phenomenon
• Cause
• Check Method
• Repair Method
Efficient troubleshooting is enabled without making a erroneous judgment by repairing in the above-
mentioned procedure.
4.2

Troubleshooting Guide

The following table lists the check methods and repair methods based on possible phenomena and causes.
• AC Adapter Failure
Phenomenon
The power cannot be
turned on (POWER lamp
not illuminated)
Find a corresponding trouble phenomenon in this column.
corresponding phenomena, confirm taking all of them into account. This allows
you to determine a hidden defective part.
Possible causes are listed as many as possible in this column. Project a trouble
cause and determine it by the check method described in the next column.
Check methods are listed in this column to determine the relevant trouble cause.
Repair the defective part in the manner described in this column.
Cause
The AC cord is not
connected.
The voltage is
abnormal.(It is slightly
higher than the rating in
the no-load state)
The AC adapter was
connected to(used for)
another device in the past.
12. Replace the AC
adapter.
Check Method
−−−
Use a voltmeter to
measure a supply voltage.
−−−
CBM-270 Service Manual
CBM-270 Service Manual
If there multiple
Repair Method
Connect the AC cord to
the specified plug socket,
etc.
Replace the AC adapter.
Replace the AC adapter.