Circuit Diagram - LG GD580 Service Manual

7. Circuit diagram

C145 C131 C140 C142
22p 10n 10u 10u
15 GND6
16 GND7
17 GND8
18 GND9
19 GND10
GND11
20
GND12
22
GND13
24
TX_DCSPCS DCS_PCS_IN
21
TX_EGSM GSM_IN
23
VAPC VAPC
25
VBATT
26
ANTSW2 27 BS2
ANTSW1 28 BS1
ANTSW0
C119 C114
C115
22p 22p 22p
0603 0603
0603
U103
1
VDD
R114
2
WPOW_SENSE RF_IN
220
3
GND
C125 C130
0.1u 10p
0603 0603
VBAT
U104
B1
VDD
A1
PVIN
C2
WPA_VCC VCON
C141 C144
10u 10n C1
WDCDC_EN EN
0603
C136
22p
0603
VCC_PA
C133
DNI
WTX_BAND_1_EN
WPA_BIAS
C135
C103 1n
1n
U101
1
VENB
2
VCTRL
C149
3
WTXMOD_BAND_1 RFIN
56p
4
VBIAS
C143 C106
10u 0.1u
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
PGND 29
GND5 14
GND4 13
GND3 12
GND2
11
GND1
9
WCDMA1 WRF_BAND_1
10
SKY77519
RX1
7
RX2 RX900
U105 6
RX3 RX1900
5
RX4 RX1800
4
SW101
RSVD MM8430-2600RB3
3 SW102
MODE UFL-R-SMT10
2
TXEN
1
G1
ANT 8 ANT G2
C109
C158
DNI
0.5p
LMV221
R105
6
OUT WPOW_DET
1K
5
0603 C127
REF
33n
4
EN
WPOW_DET_EN
WRF_BAND_1
VCC_PA L112
DNI
LM3208TL
A2
SW
FL101 SAYZY1G95EB0B00
C3 2 7
FB ANT RX WRX_BAND_1
C146
B3 4.7u 5
SGND TX WTX_BAND_1
A3
PGND
1 3
GND1 GND6
4 6
GND2 GND5
8 9
GND3 GND4
1950,2140MHz
GND|GND_DIGITAL
C110
DNI
SKY77182
9
PGND
8
GND2
7
GND1
IS101 CEG231G95DCB000
6
RFOUT IN OUT WTX_BAND_1
GND1 GND2
5
VCC
C104
L109
DNI
DNI
47
WPOW_SENSE
R108
0603
RX1800
C124
DNI
R124
TX_EGSM
18
1
GNDA5
2
VAPC AMMOD
3
R123 GNDA7
4
TX_DCSPCS TXHB
24 5
6 GNDA9 RF3000_OM6191HN
C117 C116
RF_CTRL_STRB 7 STR
DNI DNI
RF_CTRL_DATA 8 DATA
TP 9 CLK
TESTOUT
10 TESTOUT
MCLKREQ
TP304 MCIKREQ
0603
RF_CTRL_CLK
WCLK
X101 TN4-26562 0603
4
3
GND2 HOT2
1 2
HOT1 GND1
26MHz
ADOUT
MCLK
R104
100K
0603
RTEMP
VRADA_2V8
C139
C157
DNI
56p
0603
FL102
SAFEB2G14FA0F00
C128 C108
10p
22p
WPA_BIAS
0603
WPA_VCC
SAFEB1G95KA0F00
FL103
5 2
C101
G2 G1
WTXMOD_BAND_1 OUT IN
4 1 56p
G3
3 C102
DNI
0603
1 30
VRADA_2V8
GNDTX NC9
2 29
NC1 LNA1_OUT
3 28
NC2 NC8
4 27
TX_1 U106 LNA1_IN
5 26
NC3 RF3100_OM6195HN NC7
6 25
VCCLOTX NC6
7 24
WTX_I_P TXIA VCCLORX
8 23
WTX_I_N TXIB NC5
C126 9 22
VDD
WTX_Q_P TXQA
10p 10 21
0603 WTX_Q_N TXQB TST
R103 220
RF_CTRL_DATA
0603
R102 220
RF_CTRL_CLK
0603
R107 220
RF_CTRL_STRB
0603
C138 8.2p
R106 220
WCLK
0603
- 181 -
RX1900
C122
0.5p
C134 C147
C155 C154
5.6p 5.6p
5.6p 5.6p
L114 SAFEB942MFL0F00
4 5
FL105
18n
30
O2 G2
GNDA6 IN RX900
29 1
O1 G1
RX900N
28 3 2
RX900P
27
U102 GNDA8
26
RX800P 25 L111
RX800N 24 10n
VCCA VRADA_2V8
23
GNDA10 22
DATAC AMP_LSB_FREQ_LSB
21
DCLK_DATSTR
DATASTR
C113 C112
27p 10u
0603
QDATA_AMP_MSB
IDATA_FREQ_MSB
R118
100K
C151
27p
0603
VDDE_1V8
U107 SN74LVC1G125DRLR
1 5
BT_CLKREQ_N _OE VCC
2
MCLK A
3 4
GND Y
C121 C120
0.1u 4.7u
0603
VRADA_2V8
R115
BT_CLK
33
0603
VDIGRAD_1V8 VRADA_2V8
C118
WRX_BAND_1
56p
C137
DNI
C107 C111
22p 22p
WRX_Q_N
WRX_Q_P
WRX_I_N
WRX_I_P
LGE Internal Use Only