4. TROUBLE SHOOTING
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Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
R9001
2.2K
R9002
2.2K
U9000
3
34
35
30
17
20
52
26
27
25
45
5
15
12
13
19
32
21
55
50
37
54
10
4
14
24
31
57
40
47
36
53
42
58
51
56
46
49
43
29
28
33
6
1
11
7
2
18
9
8
22
16
44
39
38
48
23
41
GND2 GND3
AGND_FM1 AGND_FM2 AGND_FM3 AGND_FM4
GND4
AGND_F
M
AGND_BT1 AGND_BT2 AGND_BT3 AGND_BT4 AGND_BT5 AGND_BT6 AGND_BT7
GND1
SYS_RST_N
I2C_SDA
I2C_SCL
FM_HRX_IN
FM_PRXTX_IO
FM_I2S_SD
FM_I2S_WS
FM_I2S_SCK
BT_PCM_IN
BT_PCM_CLK
SLEEP_CLK
BT_UART_RXD
BT_UART_TXD
BT_UART_CTS
BT_UART_RTS
VDD_IO
VDD_XO_BIAS
VREG_DIG
VREG_ANA
VDD_LDO_IN
VDD_FM_1P3_1
VDD_FM_1P3_2
VDD_FM_1P3_3
VDD_FM_1P3_4
VDD_DIG_1P3
VDD_FM_DAC
VDD_BT_PA
VDD_BT_1P3_1
VDD_BT_1P3_2
VDD_BT_1P3_3
VDD_BT_1P3_4
FM_RDS_INT
SYS_CLK
FM_LO_L FM_LO_R
BT_PCM_OUT
BT_PCM_SYN
C
BT_CLK_REQ
BT_ACTIV
E
BT_STATU
S
TX_CONFIR
M
BT_RFIO
L9004
82n
C9025
10p
DNI
R9003
C9023
0.1u
VREG_MSME_1.8V
R9004
1M
10p
C9018
+3V_WLAN_WCN
C9017
10n
C9022
10n
L9003
68n
C9015
10n
C9008
47p
L9006
82n
1M
R9000
VREG_MSME_1.8V
C9016
10n
C9019
4.7u
C9020
4.7u
C9021
10n
C9024
1u
22p
C9002
SLEEP_CLK
FM_L FM_R
BT_PCM_CLK
BT_PCM_CLK
BT_PCM_SYNC
BT_PCM_SYN
C
BT_UART_CTS
BT_UART_RTS
BT_PCM_IN
BT_PCM_I
N
BT_UART_RX
BT_UART_TX
FM_RDS_INT
BT_FM_CLK_WCN
BT_FM_CLK_REQ_WC
N
FM_ANT
BT_PCM_OUT
BT_PCM_OUT
BT_RST_N
I2C_COMMON_SDA_WCN
I2C_COMMON_SCL_WCN
BT_ACTIV
E
BT_PRIORITY WLAN_ACTIV
E
BT_RF_QCT
BT/FM Module : WCN2243
close to pin13
close to pin5
close to pin54
close to pin37
C9031
100p
0.1u
C9032
C9042
0.1u
100p
C9043
FB9001
60
U9001
77
85
64
58
30
43
40
42
55
57
69
68
59
50
83
65
44
61
73
72
60
34
52
86
47
37
32
24
70
10
1
7
3
79
49
62
76
54
67
81
66
51
78
74
35
4
2
8
38
36
5
48
46
31
VDD_CORE1
VDD_CORE2
VDD_CORE3
VDD_CORE_AON1
VDD_CORE_AON2
VDD_CORE_AON3
VDD_IO
VDD_FEM
VDD_SDIO
VDD_RFA1
VDD_RFA2
VDD_PA
VDD_TCXO
VDD_RFA3
VDD_RFA4
VDD_RFA5
VDD_RFA6
VDD_RFA7
VDD_RFA8
VDD_RFA9
GND_A21
GND_D1
GND_D2
GND_D3
GND_D4
GND_A2
GND_D5
GND_D6
GND_D7
GND_D8
GND_A3
GND_A4
GND_D9
GND_A5
GND_A6
GND_A7
GND_A8
GND_A9
GND_A10
GND_A11
GND_A12
GND_A13
GND_A14
GND_A15
GND_A16
GND_A17
GND_A18
GND_A19
GND_A20
GND_A1
GND_A22
GND_A23
VDD_RFA10
VDD_RFA11
FB9000
240
C9027
0.1u
C9037
22u
C9026
10n
C9041
2.2u
R9007
0
+1V2_WLAN_WCN
+1V8_WLAN_TCXO
470n
C9036
C9038
10n
C9028
4.7u
2.2u
C9033
+3V_WLAN_WCN
VREG_MSME_1.8V
C9040
100p
C9039
100p
220n
C9034
+1V3_MSM_A3_WCN
0.1u
C9029
+1V2_MSM_A2_WCN
colse to pin77
colse to pin85
colse to pin78
WiFi : WCN 1314
[Figure] Schematic of WiFi/BT module