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Fault Diagnosis And Troubleshooting - LG WD-10480 Serveice Manual

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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.
1 2
PWB ASSEMBLY
When measuring the voltage of the outlet,
is the voltage AC 220-240V?
When measuring the voltage of pin
of the PWB assy, is the voltage AC 220-
240V?
Replace PWB assembly.
ALL BUTTONS ARE LOCKED EXCEPTOR FOR POWER BUTTON
Does the Child-Lock is set?
First, unplug the power cord and plug again.
Check the buttons are working.
Visit to check
NO POWER
YES
YES
NO
NO
18
Check the fuse
NO
Check the harness
NO
Assembly.
Cancle the
Child-Lock by
pressing [Temp.] and
YES
[Option] Buttons
simultaneously for 3
seconds.
YES
Normal

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