No Raster

Check LED Status

on display unit

Pass

Check

U401~U405, U407, U409

Pass

:[B]Process

Fail

Fail

Repeat A PROCESS

Change U401~U405, U407, U409

Check the input/

 

Output of U301

 

Fail

 

 

 

 

 

Pass

 

 

Check inverter

 

Connector or inverter

Fail

 

 

Pass

 

 

 

 

 

Check panel link

 

Cable or module

Fail

Pass

Check input source cable and jack

Change U301

Change inverter connector or inverter

Change panel link cable or module

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Image 16
LG Electronics 20LC1R-ZG service manual BProcess