Troubleshooting Flowchart Used When The Power Led Turns Off - LG MASTER-K 120S Series User Manual

Chapter 11 Troubleshooting

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
No
Yes
No
Yes
Yes
No
No
Yes
Yes
No
Supply the power.
No
Does the power led turn on?
See the power supply be within
AC 85-264 V.
No
Does the power led turn on?
Replace the fuse.
No
Does the power led turn on?
Connect the power cable correctly.
No
Does the power led turn on?
1)Eliminate the excess current
2) Switch the input power OFF then
ON
No
Does the power led turn on?
11-2
Yes
Yes
Yes
Yes
Yes
Complete