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4. TROUBLE SHOOTING
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
KEY BACKLIGHT
SSC-SWTS1007
LD302
1
A
2
C
LD301
SSC-SWTS1007
A
1
C
2
100ohm
R319
VBAT
0.1u
C321
R316
100ohm
MAIN_KEY_LED
R121
4.7K
1V8_SD
4.7K
R122
47K
R130
0
R123
0.1u
C144
1000p
C149
1V8_SD
VMIC_P
VMICN
G5
H5
VMICP
AD3
USIF_TXD
USIF1_CTS_N
V16
AB16
USIF1_RTS_N
V15
USIF1_RXD_MRST
USIF1_TXD_MTSR
Y17
USIF2_CTS_N
V6
U4
USIF2_RTS_N
T2
USIF2_RXD_MRST
USIF2_TXD_MTSR
R4
AB18
USIF3_RXD_MRST
W16
USIF3_SCLK
USIF3_TXD_MTSR
AA18
AE3
USIF_RXD
T5
SWIF_TXRX
E7
PM_INT
V5
I2C2_SDA
C2
I2RF_DATA
I2RF_SCLK
C1
I2RF_STR0
B2
I2S1_CLK0
W4
I2S1_CLK1
Y1
I2S1_RX
W2
I2S1_TX
W3
Y2
I2S1_WA0
I2S2_CLK0
U1
U5
I2S2_CLK1
I2S2_RX
W1
V2
I2S2_TX
U2
I2S2_WA0
I2S2_WA1
U3
B10
GPIO[17]
GPIO[18]
A9
A8
GPIO[19]
AA6
I2C1_SCL
I2C1_SDA
AA4
I2C2_SCL
Y4
A12
GPIO[13]
B12
GPIO[14]
A11
GPIO[15]
GPIO[16]
A10
DSPIN0
T16
DSPIN1
V18
DSPOUT1
W14
AUXGND
N4
AUXN1
AUXN2
N1
M1
AUXP1
N2
AUXP2
P2
CC_CLK
CC_IO
T4
CC_RST
P3
47K
R125
TP111
1V8_SD
VT_PWR_EN
BT_UART_RX
BT_UART_TX
FM_RESET
BT_LDO_EN
VMIC_GND
DBB_BT_INT
3G_EN
3G_CLK
3G_DATA
WDOG
UPPER_KEY_LED
BT_INT
BT_RESETn
3G_PA_MODE1
MAIN_KEY_EN
ANT_SEL4
ANT_SEL5
ANT_SEL6
USB_SE0_VM
BT_UART_CTS
BT_UART_RTS
SCL
SDA
A_MON_RX
UART_RX
A_MON_TX
CLK32K
BT_PCM_CLK
BT_PCM_RX
BT_PCM_TX
BT_PCM_SYNC
PM_INT
SCL_PMIC
SDA_PMIC
SIM_CLK
SIM_DATA
SIM_RST
USB_DAT_VP
UART_TX
TP1
TP2