LG WF-HD120S Service Manual page 50

4-8-1. TROUBLESHOOTING ELSE
BUTTON DOESN'T WORK
Is the connector connected
to Main PWB / Display
PWB disconnected or
disassembled?
Connecting connector
MAIN PWB~ Display PWB
No
Is the button of panel
stuck?
No
Reconnect or
Repair
Yes
the connector
Repair the
button
Yes
49
Is the display PCB broken?
(check the buzzer sound
and LED light
while push the button )
Replace the
Yes
DISPLAY
PWB
ASSEMBLY