Citizen CT-P292, Service Manual

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CT-292/293 Series Service Manual
2-3. Troubleshooting Procedure
When a fault occurs, confirm its phenomenon, locate the problem in accordance with “2.2 Troubleshooting
Guide”, and troubleshoot it as described below.
Phenomenon
Find the fault phenomenon in this column. If there are multiple phenomena, take all the applicable
items into consideration. This will help you locate hidden problems as well.
Cause
Possible causes are listed here. Find probable causes from the list and follow the check method to
identify the cause of the fault.
Check Method The check method for identifying the cause of the fault is described.
Remedies Take the remedies described in this column.
By following the above-mentioned procedure, you can troubleshoot problems efficiently with fewer
misjudgments.
2-4. Troubleshooting Guide
● Power Supply Failure
Phenomenon Cause Check Method Remedies
The power cable is not
connected. (AT model)
The main power of the power
source is off. Check if the plug is correctly
connected.
Check if the main power is
turned on. Connect the power cable.
Turn the main power on.
A cable is disconnected. Check if a cable at the power
supply line is disconnected
using a tester. Replace the wire connected
from the power source with a
new one. Modify the
damaged wire.
Power cannot be turned
on.
(The POWER LED not
illuminated.)
The control PCB is faulty.
−
Replace “UNIT, MAIN PCB”.
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