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Fault Diagnosis And Troubleshooting - LG WD-9016(0~9)S(U)P Service 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.
PWB ASSEMBLY
ALL BUTTONS ARE INOPERABLE EXCEPT POWER BUTTON
NO POWER
When measuring the voltage of the outlet,
is the voltage AC 220-240V?
YES
When measuring the voltage of White(3pin)
connector of the PWB assy, is the voltage
AC 220-240V?
YES
Replace PWB assembly.
Does the Child-Lock is set?
NO
First, unplug the power cord and plug again.
Check the buttons are operable.
NO
Visit to check
NO
NO
YES
YES
19
Check the fuse?
Check the harness
Assembly.
Cancle the
Child-Lock by
pressing [Temp.] and
[Option]
simultaneously for 3
seconds.
Normal

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