Main Board - LG TU750 Service Manual

CN1
G1
1
2
ACC_GP15_FLIPSENSE
3
VDDE_1V8
4
VDDG_2V85 : N.C (REV.B)
5
KEY_LED1
6
KEY_LED2
7
8
KEYOUT1
9
KEYOUT2
10
KEYOUT3
G3
VDDE_1V8
NUMBER_KEY
RA101
10K
KEYOUT1
KEYOUT2
KEYOUT3
HOT101
KEYIN0
KEYOUT4
KEYIN1
KEYIN2
KEYIN3
KEYOUT1
KEYOUT2
KEYOUT4
KEYOUT3
KEYIN0
KEYIN1
KEYIN2
KEYIN3

Main board

20 pin CONNECTOR_Female
ACC_GP_FLIPSENSE
VDDE_1V8
KEY_LED1
KEY_LED2
VBAT
KEYOUT1
KEYOUT2
KEYOUT3
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Main key PCB
TP08_BB
④
G2
20
19 R103 1800
MIC1P
18 R104 1800
MIC1N
17
16
CCO1
15
KEYOUT4
14
KEYIN0
13
KEYIN1
12
KEYIN2
11
KEYIN3
G4
TP06_BB
②
RA101
101 102 103
1 2 3
104 105 106
4 5 6
107 108 109
7 8 9
110 HOT102
HOT4 0 HOT5
Main board
CN603
G1 G2
1 20
2 19
MIC1P
3 18
MIC1N
4 17
5 16
CCO1
④
6 15
KEYOUT4
7 14
KEYIN0
8 13
KEYIN1
9 12
KEYIN2
10 11
KEYIN3
G3 G4
CN1
③
TP07_BB
VA101
~ VA108
TP08_BB
CN603
- 85 -
4. TROUBLE SHOOTING
①
TP05_BB
Side key
LGE Internal Use Only