LG U990 Service Manual page 176

7. CIRCUIT DIAGRAM
1 1 2 2 3 3
LCD_VDD_2.8V
A A
C700 C701
1u 0.1u
U700
A1
AUX
A2
VDD_REF
A3
X+
B1
TOUCH_PENIRQ_N PENIRQ-
B2
A0
B3
Y+
B B
X+
Y+
X-
Y-
C C
TOUCH SCREEN DRIVER IC
Touch Driver IC change : TSC2003 -> TSC2007
D D
E E
F F
G G
H H
1 1 2 2 3 3
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4 4 5 5 6 6
VREG_MSMP_2.7V
TSC2007IYZGR
CN700
C1 1 R707
SDA TOUCH_I2C_SDA
C2 2 R708
A1
C3 3 R709
X-
D1 4 R710
SCL TOUCH_I2C_SCL
5
D2
GND
D3
Y-
SIDE KEY
VGA_VDD_2.7V
CN701
1 30
VGA_CAM_PWDN
R717
2 29
VGA_CAM_MCLK
3 28
10
R718 10 4 27
MMP_CAM_PCLK
5 26
VGA_CAM_DATA[0]
6 25
VGA_CAM_DATA[1]
7 24
VGA_CAM_DATA[2]
8 23
VGA_CAM_DATA[3]
9 22
VGA_CAM_DATA[4]
10 21
VGA_CAM_DATA[5]
11 20
MOTOR+
12 19
MOTOR-
13 18
14 17
RCV+
15 16
RCV-
NA
ICVE10184E070R100FR
1 9
MMP_CAM_DATA[0] VGA_CAM_DATA[0] MMP_CAM_DATA[4]
INOUT_A1 INOUT_B1
2 8
MMP_CAM_DATA[1] VGA_CAM_DATA[1] MMP_CAM_DATA[5]
INOUT_A2 INOUT_B2
3 7
MMP_CAM_DATA[2] INOUT_A3 INOUT_B3 VGA_CAM_DATA[2] MMP_CAM_DATA[6]
4 6
MMP_CAM_DATA[3] INOUT_A4 INOUT_B4 VGA_CAM_DATA[3] MMP_CAM_DATA[7]
FL700
4 4 5 5 6 6
7 7 8 8
VREG_MSMP_2.7V
END
KEY_ROW[2]
470
KEY_ROW[0] PM_ON_SW_N END
470
KEY_ROW[1] KEY_COL[0]
470
KEY_COL[0]
470
KEY_COL[1] KEY_COL[1]
ON_SW KEY
VGA_VDD_1.8V
VGA_CAM_RESET_N
R719 10
I2C_SCL
R720 10
I2C_SDA
R724 10
MMP_CAM_HSYNC
R725 10
MMP_CAM_VSYNC
VGA_CAM_DATA[7]
VGA_CAM_DATA[6]
x+
Y+
x-
Y- MMP_PWR_EN
MMP_CAM_PWR_EN
C710 C711 C712 C713 C709 C714 C715
0.1u 0.1u 10p 10p 10p 10p
0.1u
ICVE10184E070R100FR
1 9
VGA_CAM_DATA[4]
INOUT_A1 INOUT_B1
2 8
VGA_CAM_DATA[5]
INOUT_A2 INOUT_B2
3 7
INOUT_A3 INOUT_B3 VGA_CAM_DATA[6]
4 6
INOUT_A4 INOUT_B4 VGA_CAM_DATA[7]
FL701
7 7 8 8
- 177 -
9 9 10 10 11 11
+VPWR
700 701
SEND CLR
KYPD_LED_EN
Rev. 1.1
VA708
EVL14K02200
(GREEN) (WHITE) (RED)
KEY
KEY PCB BACKLIGHT LEDs
+VPWR MMP_VDD_CORE_1.0V CAM_VDD_CORE_1.2V
L700 4.7uH
U701 AAT2510IWP-AA-T1
12 11 C702 100p
VIN1 LX1
9 2 R726 39K
C703
VIN2 FB1
4.7u
L701 4.7uH
1 8
EN1 LX2
C704 100p
4 5
EN2 FB2
R728 56K
9 9 10 10 11 11
LGE Internal Use Only
12 12
PQ
C C
D D
E E
F F
G G
H H
12 12