LG WM2032HS Service Manual - Page 26

Fault Diagnosis And Troubleshooting

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8-2.FAULT DIAGNOSIS AND TROUBLESHOOTING CAUTION 1. Be careful of electric shock if disconnecting parts while troubleshooting. 2. First of all, check the connection of each electrical terminal with the wiring diagram. 3. If you replace the MAIN PWB ASSEMBLY, reinsert the connectors correctly. NO POWER Connector Is the supplied voltage 120V AC? YES NO Check the fuse or reset the circuit breaker. Is the voltage between the 2 FILTER ASSEMBLY connectors 120V AC? NO Replace the FILTER ASSEMBLY (CIRC). YES Is the LED(1) on? YES NO Replace MAIN PWB ASSEMBLY. Are the connectors(2) on the PWB loose? YES Reconnect. NO Is wire of the DISPLAY PWB ASSEMBLY broken? YES Replace DISPLAY PWB ASSEMBLY or repair wire. NO Replace the MAIN PWB ASSEMBLY. 25

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25
Is the supplied voltage 120V AC?
Is the voltage between the 2 FILTER ASSEMBLY
connectors 120V AC?
Is the LED(1) on?
Are the connectors(2) 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 MAIN PWB
ASSEMBLY.
NO POWER
8-2.FAULT DIAGNOSIS AND TROUBLESHOOTING
1. Be careful of electric shock if disconnecting parts while troubleshooting.
2. First of all, check the connection of each electrical terminal with the wiring diagram.
3. If you replace the MAIN PWB ASSEMBLY, reinsert the connectors correctly.
CAUTION