Read LG WD-R1112 Service Manual online
19
8-2. FAULT DIAGNOSIS AND TROUBLESHOOTING
1. Be careful of electric shock or disconnecting the parts while trouble shooting.
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
NO
YES
YES
YES
NO
NO
YES
<PWB ASSEMBLY (MAIN)>
<PWB ASSEMBLY (MAIN)>
Check the fuse or reset
the circuit breaker.
the circuit breaker.
Replace MAIN PWB
ASSEMBLY
ASSEMBLY
Reconnect.
Reconnect.
Is the supplied voltage 120 V AC?
Is the led(1) on?
Are the connectors (2) on the PWB loose?
Is wire of the PWB ASSEMBLY disconnected?
Replace PWB ASSEMBLY
NO POWER
CAUTION
!
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