LG D686 - Circuit Diagram

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Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
6. CIRCUIT DIAGRAM
DNI
C182
C183
DNI
C181
DNI
C161 2.7n
DNI
C179
L135
1.5n
100p
C177
100pC176
L113
DNI
DNI
C163
6.8pC162
L115
22n
L129
8.2n
2
1
L117
DNI
C138 100p
C164 33p
1
2
C166
8.2n
2
1
L128
2.7n
DNI
L126
C128
22u
C127
1n
SW101
4 1
3
2
G1
G2
ANTG3
C152 100p
C159
DNI
100pC157
DNI
C180
900MHz
FL104
5
6
4
3
CTL1
GND
PORT3
PORT2
PORT1
CTL2
C153
100p
1
2
C10639p
10pC107
C104
10p
C102 10p
10pC101
U102
16
15
14 13 12 11 10
17
9
8
7
6
4
3
28
1
44
43
42
41
40
39
38
37 36 35
32
33
34
24 23
22
29
30
31
18
21
25
20
26
19
27
5
2
GND2
GND5
GND11
TRX1
ANT
TRX2
GND10
TRX3
VRAMP
PGND3
PGND2
PGND1
TRX4
TRX5 TRX6
PGND6
PGND5
PGND4
PGND7 PGND8 PGND9
PGND10
PGND11
PGND12
PGND13
PGND14
PGND15
PGND16
GND1
GND12
GND3
GND4
GND6
GND7
GND8
TX_HB_IN
TXEN
TX_LB_IN BS2
BS1 VBATT VCC
GND9
MODE
U101
1 B1 C2 D1 E2 F1 G2 H1 J2 K1 L2 M1 N2 P1 R2 T1
E18
D17
C18
B17
B13
A12
B11
A10
B9
A8
B7
A6
B5
A4
B3
A2
U16
V17
V15
U14
V13
U12
V11
U10
V9
U8
V7
U6
V5
U4
V3
U2
A14 B15 A16 F17 G18 H17 J18 K17 L18 M17 N18 P17 R18 T17 U18
GND4 NC1
NC2 NC3 VDD_28a
VSUP3
GND5
TX_LB1 TX_LB2 TX_HB1 TX_HB2
TX_HB3 GND6
GND7 GND8
LNA1N
LNA1P
LNA2N
LNA2P
LNA3N
LNA3P
LNA4N
LNA4P
LNA5N
LNA5P
LNA6N
LNA6P
LNA7N
LNA7P
LNA8N
LNA8P
REFCLK1
REFCLK2
REFCLK3
VDDXO
NC4
XO2
XO1/REFIN
VTUNE
CLK_MODE
VSUP2b
GND1
PDET
TX_IN
TX_IP
TX_QN
TX_QP
GND3
RX_BBIP
RX_BBIN
RX_BBQP
RX_BBQN
VSUP1
VDD_18
VSUP2a
VDD_28b
CLK
DATA0 DATA1
VINT
EN
GND2
PGND
C117 100p
1u C108
C112 1n
1n
C114
C126
6.8p
C118
0.1u
L102
8.2n
1.2nL106
1u
C124
C119 1u
C1091u
C123
1u
C1031u
PT101
100K
26MHz
X101
1XXA26000FTA
VCONT
1
VCC
4
GND
2
OUT
3
39K
R106
215K
R107
C142
DNI
C143
0.1u
FL103
881.5MHz
75
8
4 9
2
3
16
ANT
RX1
TX
GND1
GND5GND2
RX2
GND3 GND4
1842.5MHz
FL101
45
1
32
G1
O1
IN
G2 O2
C133 100n
C141
5.6n
C115 100p
L101 1.2n
100p
C165
L122
5.6n
C150
18n
L134 15p
C140 12p
C137 100p
L118
0.5p
C111
0.5p
L108
100n
DNI
L130
100pC172
L104 2.2n
L105
5.6n
100pC122
DNI
L120
DNI
C125
C160 8.2p
DNI
C130
L110
12n
L112
12n
1K
R105
R104
1K
R103
1K
R102 1K
C113 100p
L123
DNI
C178
DNI
2.7nC149
L133
6.8n
L131
33n
L132 3.9n
C171 100p
L119
33n
C148 2.7n
L121 6p
C158 100n
U103
15
13
14
10 5
6
4
12
7
3
8
11
1
9
2
RFIN_LB
GND1
VEN_LB
RFOUT_HB
CPL_OUT
VBATT
VEN_HB
VCC
RFIN_HB
VMODE
NCCPL_IN
RFOUT_LB
GND2
PGND
C1051u
L103 10p
FL105
2140MHz
75
8
4 9
2
3
16
ANT
RX1
TX
GND1
GND5GND2
RX2
GND3 GND4
C151 1.8n
SW102
43
2
1
ANT
COMMON
G3 G4
C146
100p
C121
39p
39p
C120
1KR101
VBATT
C110 2.2n
C169
100p
2.2uC132
100p
C145
100p
C129
C144
100p
FL106
942.5MHz
75
8
4 9
2
3
16
ANT
RX1
TX
GND1
GND5GND2
RX2
GND3 GND4
C167
100p
C168
100p
VBATT
VBATT
+3V4_VWPAM_MTK
+3V4_VWPAM_MTK
U104
15
13
14
10 5
6
4
12
7
3
8
11
1
9
2
RFIN_LB
GND1
VEN_LB
RFOUT_HB
CPL_OUT
VBATT
VEN_HB
VCC
RFIN_HB
VMODE
NCCPL_IN
RFOUT_LB
GND2
PGND
C174
22n
C175
18n
L124
1p
FL102
75
8
4 9
2
3
16
ANT
RX1
TX
GND1
GND5GND2
RX2
GND3 GND4
C156
2.2u
R111
49.9
27
R108
27
R109
36
R110
L107
0.5p
L125
4.7n
C139
2.2n
C155 6.8p
C135
0.1u
22p
C154
1
2
L127
15n
C131 100p
100p L109
L136 2.2n
DNI
C173
L114 33n
C134
2.2u
1
2
+2V85_VRF_MTK
+2V85_VRF_MTK
+2V8_VTCXO_MTK
+2V8_VTCXO_MTK
+2V8_VTCXO_MTK
ANT_SEL0
ANT_SEL1
ANT_SEL2
GSM_PA_EN
SYSCLK
BSI1_CLK
BSI1_CS1
BSI1_DATA BSI1_CS0
GSM_UMTSTX_IN
GSM_UMTSTX_IP
GSM_UMTSTX_QN
GSM_UMTSTX_QP
GSM_PA_RAMP
+1V8_VIO_MTK
+1V8_VRF_MTK
3GTX_B2
3GTX_B2
TX_DCS_PCS
TX_DCS_PCS
TX_GSM850_GSM900
TX_GSM850_GSM900
3GTX_B5_B8
3GTX_B5_B8
ANT_BAND_SEL1
ANT_BAND_SEL2
MAIN_CLK_26MHz
MAIN_CLK_26MHz
RF_TEMP_ADC AFC
UMTSRX_IP
UMTSRX_IN
UMTSRX_QP UMTSRX_QN
RX_G1800_INP
RX_G1800_INP
RX_G1800_INN
RX_G1800_INN
TRX_B2_G1900
TRX_B2_G1900
TRX_B1
TRX_B1
RX_B1_INN
RX_B1_INN
RX_B8_G900_INP
RX_B8_G900_INP
RX_B8_G900_INN
RX_B8_G900_INN
RX_B1_INP
RX_B1_INP
RX_B5_G850_INP
RX_B5_G850_INP
RX_B5_G850_INN
RX_B5_G850_INN
RX_B2_G1900_INN
RX_B2_G1900_INN
3GTX_B8
3GTX_B8
3GTX_B5
3GTX_B5
PA_ON_B8_EN
PA_ON_B1_EN
PA_ON_B2_EN
PA_R0
PA_R0
TRX_B5_G850
TRX_B5_G850
TRX_B8_G900
TRX_B8_G900
RX_B2_G1900_INP
RX_B2_G1900_INP
PDET
PDET
PA_ON_B5_EN
3GTX_B1
3GTX_B1
NA
ENWY0005601
00 0
TX_SPDT
Logic Check
RF_MAIN
MAIN_ANT
1
TRX1
TRX4
TRX3
0
1010
01
TRX2
Mode
ANT_SEL0
Stand-by 0
0
0 1
0
0
ANT_SEL1 ANT_SEL2
0
1
1
0
0
0
PA_EN
TRX5
TRX6
1 1
0 1 0
TRX_B8_G900_RX
TRX_B1
TRX_B5_G850_RX
TRX_B2_G1900
G1800
Tx Module
ANT_BAND_SEL1 ANT_BAND_SEL2
3GTX_B5
B1 TRx
3GTX_B8
1
0
0
1
B2 TRx / G1900 Rx
B8 TRx / G900 Rx
WCDMA
B5 TRx / G850 Rx
TX_GSM850_GSM900
TX_DCS_PCS
0TX_LB
TX_HB 111 0
01 1
6. CIRCUIT DIAGRAM