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4. TROUBLE SHOOTING
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Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
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ͽͶ͑ ͺΟΥΖΣΟΒΝ͑ ΆΤΖ͑ ΟΝΪ͑
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Typical USB path
0.1u
C1222
V_USB
VDD_5V0_HDMI
GB042-34S-H10-E3000
CN1204
18
17
19
16
20
15
21
14
22
13
23
12
24
11
25
10
26
9
27
8
28
7
29
6
30
5
31
4
32
3
33
2
34
1
C1211
0.1u
C1208
0.1u
V_POWERRAIL
DDC_SCL
DDC_SDA
HDMI_TXD2P
HDMI_TXD2N
HDMI_TXD1P
HDMI_TXD1N
HDMI_TXD0P
HDMI_TXCP
HDMI_TXCN
HDMI_TXD0N
HDMI_INT
SPK_L2-
SPK_R+
SPK_R-
USB1_DN
USB1_DP
CRADLE_DET
TABLET_USB_ID
0.7 mm
C1003
2.2u
C1006
0.1u
0.1u
C1000
V_POWERRAIL
u1
10
01
C
V_USB
V_POWERRAIL
U1004
4
3
5
2
6
1
S
B1
VCC
GND
A
B0
100K
R1002
VDD_1V8
TP1000
IC1000
2
B
1
C
2
C
C3
A2
C4
D3
D1
D4
A1
B1
A3
B4
B3
B5
A5
C5
A4
D5
D2
BAT
VB
DN1
COMN1
DP2
COMP2
U1
UID
U2
RES
MIC
AUD1
CAP
AUD2
GND
ISET
IC
L
C
S
A
D
S
T
NI
L1001
8.2n
L1002
8.2n
L1000
8.2n
L1003
8.2n
0
R1008
GEN1_I2C_SCL
GEN1_I2C_SDA
MUIC_INT_N
UART_TX
UART_RX
USB1_DN
USB1_DP
USB_T20_DN
USB_T20_DP
CRADLE_DET
CRADLE_USB_ID
TABLET_USB_ID
USB_CP_DP
USB_CP_DN
MUIC
90ohm matching !!
Differential 90ohm matching !!
AC16
AF15
AG15
AH15
AH14
AE14
AD14
AC14
AD17
USB1_VBUS
USB1_DN
USB1_DP
USB1_ID
USB3_VBUS
USB3_DN
USB3_DP
USB3_ID
USB_REXT
USB1_VBUS
1K
R144
USB1_ID
USB_T20_DN
USB_T20_DP
USB3_T20_DN
USB3_T20_DP
3
V3
_3
O
DL
_
V