LG GT500 - Page 94

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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
TP2
1
Main PCB Bottom
3
2
1
18
17
34
CN503
Main PCB Bottom
Camera FPCB
Bottom
TP1
TP3 TP4
TP5
U301
1%
Audio Subsystem
Audio Subsystem
1%
C343
B3
B1
VDD
A3
VSS
18000p
A4
C1P
A5
D3
GND
HPL
A2
HPR
A1
INA1
D2
INA2
D1
C2
INB1
C1
INB2
D5
OUT+
B5
OUT-
C4
PGND
C5
PVDD
RXIN+
D4
B4
RXIN-
SCL
C3
SDA
MAX9877AEWP_TG45
U301
B2
BIAS
C1N
C342 1u
C334
0.1u
C354
1u
C333
1u
15R323
VA300 ICVL0505101V150FR
VBAT
15R322
C332
1u
C353 22p
C336 1u
C352 22p
C339 1u
VA301 ICVL0505101V150FR
18000pC344
C338 1u
HS_EAR_L
HS_EAR_R
SPK_RCV-
SPK_RCV+
AMP_I2C_SCL
AMP_I2C_SDA
EAR_R
EAR_L
SPKRP
SPKRN
BEARP
BEARN
TP1
TP2
TOUCH_Y- : GND line shielding to CN
27
28
29
3
30
31
32
33
34
4
5
6
7
8
9
13
14
15
16
17 18
19
2
20
21
22
23
24
25
26
CAM_AVDD_2V8
ENBY0040301
GB042-34S-H10-E3000
CN503
1
10
11
12
0.1u
C525
CAM_DVDD_1V8
C523
0.1u
TOUCH_Y+
TOUCH_Y-
CI_RES_n
SYSCLK0
TOUCH_X+
TOUCH_X-
APP_GP_VGA_SDN
APP_I2C_SDA
APP_I2C_SCL
CI_DATA[1]
CI_DATA[3]
CI_HSYNC
CI_DATA[6]
CI_DATA[0]
CI_DATA[2]
CI_DATA[4]
CI_VSYNC
SPK_RCV+
SPK_RCV- CI_PCLK
CI_DATA[7]
CI_DATA[5]
TP3
TP4
CN902
1
2
SPK_RCV-
SPK_RCV+
TP5