LG KF700Q Service Manual page 82

MSM6280
Place near MSM
C201 0.1u
C202 47p
C203 47p
C204 10u
C508 47n R507 10K
LINE_ON
C509 47n R508 10K
LINE_OP
TP505
SPK_AMP_EN
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
L201
100nH
LCD_DATA(15)
LCD_DATA(14)
LCD_DATA(13)
LCD_DATA(12)
LCD_DATA(11)
LCD_DATA(10)
LCD_DATA(9)
LCD_DATA(8)
LCD_DATA(7)
LCD_DATA(6)
LCD_DATA(5)
LCD_DATA(4)
LCD_DATA(3)
LCD_DATA(2)
LCD_DATA(1)
LCD_DATA(0)
LCD_IF_MODE
EBI2_ADDR(11)
LCD_CS_N
LCD_RESET_N
EBI2_OE_N
EBI2_WE_N
LCD_VSYNC_OUT
C211 47p
VGA_CAM_PWDN
LCD_MAKER_ID
Rev.1.0
C214 47p TOUCH_I2C_SCL
TOUCH_I2C_SDA
TOUCH_PENIRQ_N
+VPWR
FB501
R505 62K
R506 62K
U505 TPA6205A1ZQVR
C3 A3
IN- VDD
C2 B3
IN+ VO+
B1 A1
_SHUTDOWN VO-
C1 B2
BYPASS GND
EUSY0335701
C511
220n
SPEAKER AMP
[Fig. 4.5] Schematic of Loud speaker path
- 83 -
4. TROUBLE SHOOTING
CN301
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
R306 51 26 39
27 38
28 37
29 36
30 35
31 34
32 33
G3 G4
MAIN PCB TO LCD FPCB
+VPWR
C507 C506
1u 10u
SPK+
SPK_RCV+
SPK-
RCV+
SPK+
C510
0.01u
RECEIVER SPEAKER SELECT
CAM_VSYNC
CAM_HSYNC
CAM_DATA(7)
CAM_DATA(6)
CAM_DATA(5)
CAM_DATA(4)
CAM_DATA(3)
CAM_DATA(2)
CAM_DATA(1)
CAM_DATA(0)
CAM_PCLK
CAM_MCLK
VGA_CAM_RESET_N
I2C_SCL
I2C_SDA
WLED_PWR
MLED1
MLED2
MLED3
MLED4
MLED5
MLED6
MOTOR+
MOTOR-
SPK_RCV+
SPK_RCV-
U504
NLAS5223BMNR2G
1 10
SPK-
VCC NO2
2 9
SPK_RCV-
NO1 COM2
3 8
SPK_RCV_SEL
COM1 IN2
4 7
RCV-
IN1 NC2
5 6
NC1 GND
LGE Internal Use Only