Only For Training And Service Purposes - LG KF700 Service Manual

4. TROUBLE SHOOTING
VREG_MSMP_2.7V
KEY_ROW(0)
KEY_ROW(1)
KEY_ROW(2)
KEY_ROW(3)
KEY_COL(0)
KEY_COL(1)
KEY_COL(2)
KEY_COL(3)
100ohm
KEY_COL(4)
LGE Internal Use Only
C100
0.1u
100
100ohm R101
1 2
103
100ohm R102
4 5
106
100ohm R103
7 8
HOT100
100ohm R104
HOT4 0
R105
[Fig. 4.1] Schematic of key sense part (KEY FPCB)
PM_ON_SW_N
PRSB6.8C
101 102 SND
3
104 105 CLR
6
107 108 COM
9
CAMERA
109 HOT101
FOCUS
HOT3
Copyright © 2008 LG Electronics. Inc. All right reserved.
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END
CAMERA

Only for training and service purposes