LG WD-8050F - Page 50

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8-2.FAULT DIAGNOSIS AND TROUBLE SHOOTING
1. Be careful of electric shock or disconnecting the parts while trouble shooting.
2. First of all, check the connection of each part terminal with wiring diagram.
3. Voltage between each terminal is AC 220-240V while applying an electric current
(except secondary part of the transformer and sensors)
2
1
3
PWB ASSY (POWER)
NO
NO
YES
YES
YES
NO
NO
YES
Check the fuse?
Replace PWB assy
(Power)
Reconnect and repair
connector.
Replace PWB assy(Main)
When measuring the voltage of the outlet,
is the voltage AC 220-240V?
When measuring the voltage of blue
connector of the PWB assy (Power),
is the voltage AC 220-240V?
Is ¤Øconnector disconnected or
or is the contact bad or cut?
Is wire of the PWB assy(Display)
disconnected?
Replace PWB assy(Display)
NO POWER
CAUTION