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LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
4.9 Folder ON/OFF Trouble
START
Insert magnet
in lower slide
No
Yes
Turn the power on
No
Change Main board
Check magnet
Pin 1 of U500 = 2.75V
Place magnet on U500
Yes
Pin 2 of U500 = 0V
No
VDIG=2.75V at R608
Yes
No
Change Main
board
Slide OK?
No
Change keypad
Slide OK?
No
Yes
Finished
Yes
Yes
1
2
3