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. DIAGNOSIS AND TROUBLESHOOTING

1. Be careful of electric shock if disconnecting parts while troubleshooting.

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

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

YES

PWB ASSEMBLE, DISPLAY

5 5

Is the supplied voltage 120 V AC?

Is the voltage between the FILTER ASSEMBLY

connectors

and 120 V AC?

Is the LED lamp on?

Are the connectors

on the PWB loose?

Is wire of the DISPLAY PWB ASSEMBLY

broken?

Replace DISPLAY PWB ASSEMBLY

or repair wire.

Check the fuse or reset

the circuit breaker.

Replace the FILTER

ASSEMBLY (CIRC).

Replace MAIN PWB

ASSEMBLY.

Reconnect.

Replace the CABLE

(HARNESS)

NO POWER

WARNING

LG GCW1069QS Service Manual

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