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Flow Chart of Troubleshooting
9-12
R209
C228
EAR_OUT_N|R
W16
EAR_OUT_P|L
W17
HSET_OUT_N
W18
HSET_OUT_P
W19
INTMIC_IN_P
V19
EXTMIC_BIAS
U18
INTMIC_IN_N
U19
INTMIC_BIAS
T18
EXTMIC_IN_P
T19
AUXAUD_IN_R
R18
EXTMIC_IN_N
R19
HKSW_DET1
P19
HKSW_DET2
N19
R210
FM_L
FM_R
KEYIN(0)
MIC_BIAS
EAR_MIC_N
EAR_MIC_P
MIC_N
MIC_P
SPK_P
EAR_P
SPK_N
EAR_SW_REF
EAR_SW
EAR_N
Digital External Interface- UART
EAR_MIC
1
S
2
Q
1
0
0
D
3
G
L111
C137
R128
R119
R125
C133
1
2
3
4
5
6
ZD105
L115
R117
1
2
3
4
5
6
ZD104
R123
C134
C138
L117
VCHG_5V
C150
L113
VBAT
1005
R126
R122
R120
C136
C147
C139
L116
C135
NC 22
NC 23
24
NC
NC 25
26
NC
27
NC
20
20
3
3
4
4
5
5
6
6
7
7
8
8
9
9
21
NC
14
14
15
15
16
16
17
17
18
18
19
19
2
2
HY20-AB0310
IFC100
1
1
10
10
11
11
12
12
13
13
VDD_3.3V
C149
C148
R129
C132
R124
L118
VCM_OUT
JIG_ON_IF
AUX_DET
UART0_RD
JIG_ON
TA_DETECT
USB_EN
UART0_TD
EAR_MIC_N
EAR_MIC_P
EAR_SW_REF
USB_DM
EAR_N
R_ANT
USB_DP
EAR_P
EAR_SW
Summary of Contents for GT-E2120
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