Read LG F1220ND5 Service Manual online
20
8-2. FAULT DIAGNOSIS AND TROUBLESHOOTING
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 PWB assembly (Main), put in the connectors correctly.
2. First of all, check the connection of each part terminal with wiring diagram.
3. If you replace the PWB assembly (Main), put in the connectors correctly.
CAUTION
NO POWER
ALL BUTTONS ARE INOPERABLE
When measuring the voltage of the
outlet, is the voltage AC 220-240V?
Check the fuse
YES
NO
When measuring the voltage of
Yellow(BN), Black(BL) connector of the
PWB assy, is the voltage AC 220-240V?
Check the harness
Assembly.
YES
NO
Replace PWB assembly.
Cancle the
Child-Lock
NO
YES
First, unplug the power cord and plug
again.
Check the buttons are working.
Is Child Lock set?
Visit to check
Normal
NO
YES
<PWB ASSEMBLY (MAIN)>
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