LG KG200 Service Manual - Page 51
Keypad Problem
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4. Troubleshooting Keypad Problem Start Check test mode YES Check Power on key YES Check U100 YES Keypad will work properly NO Clean the PCBA pad NO Change U400 NO Change U100 - 52 -
4. Troubleshooting
- 52 -
Keypad Problem
Start
Check Power on key
Change U400
Check test mode
Clean the PCBA pad
Check U100
Change U100
Keypad will work properly
YES
YES
YES
NO
NO
NO