Fault Diagnosis And Troubleshooting - LG WD-1 Series Service Manual

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 PWB assembly (Main), put in the connectors correctly.
<PWB ASSEMBLY (MAIN)>
When measuring the voltage of the outlet,
is the voltage AC 220-240V?
When measuring the voltage of Yellow(BN),
Black(BL) connector of the PWB assy, is
the voltage AC 220-240V?
Replace PWB assembly.
ALL BUTTONS ARE INOPERABLE EXCEPT POWER BUTTON
Is Child Lock set?
First, unplug the power cord and plug again.
Check the buttons are working.
Visit to check
NO POWER
YES
YES
NO
NO
26
NO
Check the fuse
Check the harness
NO
Assembly.
Cancle the
YES
Child-Lock
YES
Normal