4. TROUBLE SHOOTING
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Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Typical USB path
FL1301
6
5
3
2
4
1
D1
D4
D2
D3
G1
G2
D1309
D1308
RCLAMP0521PA_TCT
PESD12VS1UB
ZD1307
R1303
0
CN1301
04-5161-005-100-868
EAG63090001
11
10
9
5
4
3
2
1
8
7
6
680p
C1302
1
2
C1301
39p
USB_DP
USB_DM
USB_ID
VCHG
Rev.B: Size Change
uUSB Connector
C3
B5
B4
USBA0_OTG_DM/UART3_TX_IRTX/UART2_TX/GPIO_180/SAFE_MODE
USBA0_OTG_DP/UART3_RX_IRRX/UART2_RX/GPIO_179/SAFE_MODE
USBA0_OTG_CE
USB_DM_OMAP
USB_DP_OMAP
USB
MUIC
FL700
SFEY0015301
NFM18PC104R1C3
IN
OUT
GND1 GND2
C729
10n
USB_VBUS_CON
D700
100n
C726
R721
1.5K
TP703
R723
2.2K
TSU5611YZPR
IC701
EAN62210001
B4
D2
B2
A1
A2
B3
C2
A4
C1
A3
D1
E4
D3
D4
E3
E2
C3
E1
C4
B1
VSUPPL
Y
UART_TX
VBUS
UART_RX
DM
DP
USB_DM
ID
USB_DP
AUDIO_L
R2_2K
AUDIO_R
MIC
DSS
_INT
SDA
CLDO
SCL
GND
ISET
56K
R720
DNI
R724
1.5K
R722
C736
10n
VSEL_1.8V
VBAT
I2C3_SCL
I2C3_SDA
VCHG
USB_DM_OMAP
USB_DP_OMAP
USB_DP
USB_DM
USB_ID
UART_TX
UART_RX
MUIC_INT/
90ohm matching !!
MICRO USB CONN. + MUIC
90ohm matching !!
2mm
rev1.0 : delete USB_DM/DP/ID, VBUS,GND TP
90ohm matching !!
USB-
USB+
USB_ID1
USB_VBUS_CON
100K
R914
Q902
EBK61572201
LSCR523EBFS8
2
1
3
R911
4.7K
VBAT
CN903
ENBY0040701
GB042-30S-H10-E3000
16
15
17
14
18
13
19
12
20
11
21
10
22
9
23
8
24
7
25
6
26
5
27
4
28
3
29
2
30
1
AUD_SPK_N
AUD_SPK_P
USB_DP
USB_DM
FRONT_KEY_LED_EN/
VIB_L_N
USB_ID
VIB_L_P
AMIC_GND
KEY_C[1]
MICBIAS
KEY_R[2]
MMIC_P
(1T, 30 Pin)
Lower_Ant FPCB Connector
LOW : OFF
HIGH : ON
revA(R[1]) -> revB(R[2]) : for home key
revA(R[0]) -> revB(GND) : delete quick key
P760_RevD/P768_RevB : Delete R915
CN1300
16
15
17
14
18
13
19
12
20
11
21
10
22
9
23
8
24
7
25
6
26
5
27
4
28
3
29
2
30
1
VCHG
VBAT
VIB_L_N
USB_DP
USB_DM
VIB_L_P
LED_C
USB_ID
KEY_C[1]
MMIC_P
AUD_SPK_P
VCHG
AMIC_GND
KEY_R[2]
AUD_SPK_N
MICBIAS
Rev.E: Add GND
12.04.10 Pin map Changed
EU Rev.E: R[1]->R[2]
TP2