Troubleshooting Procedure; Troubleshooting Guide - Citizen CT-P292 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.
Find the fault phenomenon in this column. If there are multiple phenomena, take all the applicable
Phenomenon
items into consideration. This will help you locate hidden problems as well.
Possible causes are listed here. Find probable causes from the list and follow the check method to
Cause
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
Power cannot be turned
on.
(The POWER LED not
illuminated.)
Cause
The power cable is not
connected. (AT model)
The main power of the power
source is off.
A cable is disconnected.
The control PCB is faulty.
CT-292/293 Series Service Manual
Check Method
Check if the plug is correctly
connected.
Check if the main power is
turned on.
Check if a cable at the power
supply line is disconnected
using a tester.
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Remedies
Connect the power cable.
Turn the main power on.
Replace the wire connected
from the power source with a
new one. Modify the
damaged wire.
Replace "UNIT, MAIN PCB".