LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 143 -
VA704(ROW2 )
SEND
VA706(COL1)
VA705(COL0)
CLR
END
LOCK
SHOT
SEND
CLR
51K
R700
470
R701
VA706
EVLC14S02050
CLR
470
R707
R712
470
EVLC14S02050
VA704
VA705
EVLC14S02050
SEND
KEY_ROW[2]
KEY_COL[1]
VREG_MSMP_2.7V
KEY_COL[0]
LOCK & AF KEY
VA710
EVLC14S02050
EVLC14S02050
VA707
VA708
EVLC14S02050
R703
51K
470
R704
R706
470
VREG_MSMP_2.7V
470
R710
EVLC14S02050
VA709
R708
470
4
5
CN700
1
2
3
R702
51K
KEY_ROW[1]
KEY_ROW[0]
KEY_COL[0]
KEY_COL[1]
ON_SW KEY
END
END
ICVS0514X350FR
VA700
PM_ON_SW_N
Schematic of key sense part