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Chapter 11 Troubleshooting
11-2
11.2.1 Troubleshooting flowchart used when the POWER LED turns OFF.
The following flowchart explains corrective action procedure used when the power is supplied or the power led turns off during
operation.
Power LED is turned OFF
Is the power supply operating?
Is the voltage within the rated
power?
Is the fuse blown?
Is the power supply cable
connected?
Over current protection device
activated?
Write down the troubleshooting
questionnaire and contact
the nearest service center
Supply the power.
Does the power led turn on?
See the power suppl
y
be within
AC 85-264 V.
Replace the fuse.
Connect the power cable correctly.
Does the power led turn on?
Does the power led turn on?
Does the power led turn on?
1)Eliminate the excess current
2) Switch the input power OFF then
ON
No
No
N
o
Yes
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Complete
Yes
No
Does the power led turn on?