Circuit Diagram - LG KF700 Service Manual

7. CIRCUIT DIAGRAM

1 1 2 2 3 3
SW100 SW101
FL100
KMS-507
DGM112M02
G1
G2 C100 PCN_RX1
G2 1
G3 ANT ANT RF ANT PCN_RX2
G1
A A 100p
20369-001E
PCS_RX1
2
GND1 PCS_RX2
3
GND2
8
GND3 EGSM_RX1
10
GND4 EGSM_RX2
20
GND5
22
GND6 GSM850_RX1
23
GND7 GSM850_RX2
24
GND8
WCDMA_2100
PCN_PCS_TX
GSM850_EGSM_TX
VREG_RF_SMPS
ANT_SEL0
ANT_SEL1
ANT_SEL2
B B
C110 C111 C114
C113
0.1u 10n 10n
10n
C C
ANTENNA SW LOGIC for M112(Epcos)
ANT_SEL0 ANT_SEL1 ANT_SEL2
GSM 850/GSM 900 TX H L H
GSM 1800/GSM 1900 TX H H L
WCDMA
H L L
GSM 850 RX
L L L
GSM 900 RX L L H
D D GSM 1800 RX L H H
GSM 1900 RX L H L
E E
GSM & EDGE
WCDMA 2100
F F
L113
C150
NA
100p
L116
FL103
6.8nH
SAYZY1G95EA0B00
G G
C170
22p
U104
SCDY0003801
C172 L120
RX_WCDMA_2100
1.8nH 1 2
56p
C173
L121
DNI
1.8nH 20dB
H H
R117
47
R118
120
1 1 2 3
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4 5 6 6
12
13
14
15
16
17 L100
18 6.8nH
19
DCS L101
21 18nH
L103
9
11 6.8nH
L104
5.6nH
PCS L105 L106
22nH 4.7nH
L107
5.6nH
L108
18nH
C118
GSM L109
1p
47nH
L110
18nH
+VPWR
C134
C135 C128
56p 100p 22u
tcc_16085h_9_r
L502
1.5nH
2
DCS_PCS_IN
L501
8.2nH 16 7
DCS_PCS_OUT U101 GSM_IN
SKY77329
9 1
EFCH897MTDB1
GSM_OUT TX_EN
3
R600
BS
0
C139
82p
L111
NA
GSM_PA_BAND GSM_PA_EN
C145 C146
1000p 1000p
VDD_RX FL102
C149 EFCH2140TDE1
22p L112
1nH
2 3
C152
C151
G1 O1
WLNA_OUT
IN 0.5p
1
1p G2 O2
5 4
C154
0.5p
FL104
L118
EFCH1950TDF1
+VPWR
1nH
4 5
C160
C162 C163 C164
O1 G3
4.7u 0.01u 0.01u 4.7u C165 C539 IN
G2 G1
DNI 1p
smd_1608h_9_r smd_1608h_9_r 3 2
U105
AWT6279R
11
PGND
10 1
VCC VBATT
C171 9 2
GND3 RFIN
8 3
RFOUT VMODE2
7 4
GND2 VMODE1 PA_R1
2.2p
6 5
GND1 VEN PA_ON
L122
C174
4.7nH
DNI C175 C176
0.01u 100p
R116
PWR_DET
47
R119
8 dB
100ohm
4 4 5 6
7 7 8
55
ENV_OUT
C104 5.6p 46
WCDMA_2100_TX_OUT HB_RF_OUT1
L102 C105 6p 44
DCS_PCS_TX HB_RF_OUT2
5.6nH
C106 5p
43
GSM_TX LB_RF_OUT1
42
LB_RF_OUT2
24
TX_ON RF_ON
56
TX_AGC_ADJ VCONTROL
54
DAC_REF DAC_REF
U100
14
C112
SSBDT_RTR SBDT
(1%)
12p
R101 12K 3 RTR6275-CHARTERED
R_BIAS1
27
R_BIAS2
R102 680
(1%)
PWD_DET_IN
C115 22p 31
GCELL_INP
30
GCELL_INN
32
EGSM_INP
33
EGSM_INN
38
DCS_INP
39
DCS_INN
36
GPCS_INP
37
GPCS_INN
22
CAL_INP
23
CAL_INN
26
RX_WCDMA_2100
WLNA_IN
29 34 35 57
WLNA_OUT
WCDMA_MIX_IN_P
Close to GND
WCDMA_MIX_IN_M
VREG_MSMP_2.7V
2.2K R106
GSM_PA_RAMP
C129 C130
C133 0.01u 22p
68p
R107
DCS_PCS_TX
68
R108 R109
FL101
10 dB
91 91
3 2
R111
G2 G1
GSM_TX
IN
1
O1 G3
51
4 5
R112 R113
8 dB
120 120
BLUE TOOTH
L114
WCDMA_MIX_IN_M
1.2nH
OUT100
C153
FEED
DNI
L115
C155
WCDMA_MIX_IN_P
1.2nH
2.2nH
L117
NA
16
ANT
C159 1000p
9 4
BT_CLK CLK_REF SBST
11
M100 SBCK
3 12
VCC_OUT SBDT
LBRQ-2B43A
C161 56p
2 5
1 WCDMA_2100_TX_OUT
VDD_INT SYNC_DET_TX_EN
10 13
C166 C167 VDD_MSM RX_BB_TX_BB
L119
1u 1u
3.9nH 14 7
VDD_BAT XTAL_IN
20 19 18 17 15 8 6 1
VREG_MSMP_2.7V
VREG_BT_2.85V
C177 C178
100p 0.1u
C179 C180
2.2u 100p
smd_1608h_9_r
7 7 8 8
- 145 -
9 10 10 11 11
TX_IP
C103
82p
TX_IM
2
ENV_LNP
1
ENV_LNN TX_QP
51
TX_IP C107
50
TX_IN 82p
53
TX_QP
52
TX_QN TX_QM
7
TCXO RTR6275_TCXO
5 C108 3300p
VTUNE1
18
VTUNE2
C109 1000p Close to GND
12
RX_IP RX_IP
13
RX_IN RX_IM
10
RX_QP RX_QP
11
RX_QN RX_QM
40
PWR_DET
21
TEST
4
VDDA1
6
VDDA2
8
VDDA3
9
VDDA4 C116 C117
15
VDDA5 0.1u 0.1u
16
VDDA6
19
VDDA7
20
VDDA8
28
VDDA9 VREG_RF_SMPS
41
VDDA10
45
VDDA11 C120 C121 C122 C119
47
VDDA12 C126
0.1u 22p 33p 22u
48
VDDA13
0.1u tcc_16085h_9_r
49
VDDA14
C124 C125
C123
22p 100p 1u
VDD_RX
R105
10
VREG_RF_SMPS
C132 C127
C131
100p 100p 10u
smd_1608h_9_r
X100
DSA321SCE-19.2M
R110
4 1
VREG_TCXO_2.85V VCC VCONT
100ohm
3 2
OUTPUT GND
C140 C141 C142
TCXO 0.1u 0.01u 0.01u
8 5
NC4 NC1
7 6
NC3 NC2
C143 C144
R114
TCXO_PM 1000p
1000p 100K
C147 C148
RTR6275_TCXO
1000p 0.01u
U102
TC7SH04FS
FM RADIO
NC1
NC2
FM_CONTROL
C156 C157
1u 10n
21 20 19 18 17 16
C158 100p
FM_ANT
1 15
NC1 GND3
2 U103 14
FMIP LOUT
3 13
BT_SBST RFGND ROUT
SI4702-C19-GM
4 1 2
BT_SBCK GND1 GND2
5 11
BT_SBDT _RST VD
BT_TX_RX_N
R115 0
BT_DATA
6 7 8 9 10
FM_BUSEN
C168 1000p
TCXO_BT
TP100
FM_I2C_SCL C169
0.1u
TP101
FM_I2C_SDA
TP102
SLEEP_CLK
9 10 11 11
LGE Internal Use Only
12 12
A A
B B
C C
VREG_SYNTH_2.6V
D D
TRK_LO_ADJ
E E
VREG_BT_2.85V
TCXO_BT
F F
VREG_MSMP_2.7V
FM_AUDIO_L
FM_AUDIO_R
G G
VREG_MSMP_2.7V
H H
12 12