8-2.FAULT DIAGNOSIS AND TROUBLESHOOTING

CAUTION

1.Be careful of electric shock or disconnecting the parts while troubleshooting.

2.First of all, check the connection of each part terminal with wiring diagram.

3.If you replace the MAIN PWB ASSEMBLY, put in the connectors correctly.

NO POWER

 

 

When measuring the voltageYESof the outlet,

 

 

is the voltage AC 220-240V?

MAINPWASSEB

MBLY(MAIN)(1)

Is the led (1) on?

YES

MAINPWBASSEMBLY(MAIN)

When measuring the voltage of White(3Pin)

connector of the PWB ASSEMBLY is the voltage

AC 220-240V?

YES

Replace PWB ASSEMBLY

NONO

NO

Check the fuse

Replace PWB ASSEMBLY

Check the harness Assembly

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LG Electronics 10220(5)FDB(N), WD(M)-14220(5)FD, WD(M)-10220(5)FD, 16221FD Fault Diagnosis and Troubleshooting, No Power