Only For Training And Service Purposes - LG KF700 Service Manual

BH28PB1WHFV
1
TOUCH_LDO_EN STBY
2
GND
3
+VPWR VIN
C517
470n
TOUCH WINDOW LDO
C102 (VREG_LDO_TOUCH_2.8V)
VREG_TOUCH_2.8V
C102 C103
1u 0.1u
TOUCH_PENIRQ_N
X+
Y+
X-
Y-
Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

VREG_LDO_TOUCH_2.8V
U505
5
SEL
6
BGND
4
VOUT
C518
470n
U100 TSC2007IYZGR
A1 C1
AUX SDA
A2 C2
VDD_REF A1
A3 C3
X+ X-
B1 D1
PENIRQ- SCL
B2 D2
A0 GND
B3 D3
Y+ Y-
C104
0.1u
TOUCH SCREEN DRIVER IC
C104 (TOUCH_PENIRQ_N)
[Fig. 4.9] Schematic of TOUCH part
4. TROUBLE SHOOTING
R304 (TOUCH_12C_SCL)&
R305 (TOUCH_12C_SDA)
LCD_FPCB_DET
12/25
LCD_IF_MODE
LCD_RESET_N
LCD_DATA(15)
LCD_DATA(14)
LCD_DATA(13)
LCD_DATA(12)
LCD_DATA(11)
LCD_DATA(10)
LCD_DATA(9)
LCD_DATA(8)
TOUCH_I2C_SDA
LCD_DATA(7)
LCD_DATA(6)
TOUCH_I2C_SCL
LCD_DATA(5)
LCD_DATA(4)
LCD_DATA(3)
LCD_DATA(2)
LCD_DATA(1)
LCD_DATA(0)
EBI2_OE_N
EBI2_WE_N
EBI2_ADDR(11)
LCD_CS_N
LCD_VSYNC_OUT
TOUCH_PENIRQ_N
TOUCH_I2C_SCL
TOUCH_I2C_SDA
- 103 -
CN300
G1 G2
1 64
2 63
3 62
4 61
5 60
6 59
7 58
8 57
9 56
10 55
11 54
12 53
13 52
14 51
15 50
16 49
17 48
18 47
19 46
20 45
21 44
22 43
23 42
24 41
25 40
26 39
27 38
28 37
29 36
30 35
31 34
32 33
G3 G4
LGE Internal Use Only