Circuit Diagram - LG KF700Q Service Manual

7. CIRCUIT DIAGRAM

1 1 2 2 3 3
A A
KMS-507 KMS-507
AN101 AN101 C104 C104 SW101 SW101 C105 C105
L102 L102
G2 G2
ANT ANT RF RF
G1 G1
1nH 1nH 0 56p 56p
C106 C106
L103 L103
DNI DNI
15nH 15nH
C101 C101
DNI DNI
FL101 FL101
D5015 D5015
PCS_RX1 PCS_RX1
PCS_RX2 PCS_RX2
AN102 AN102 2
ANT ANT PCN_RX1 PCN_RX1
PCN_RX2 PCN_RX2
1
GND1 GND1 EGSM_RX1 EGSM_RX1
8
GND2 GND2 EGSM_RX2 EGSM_RX2
10 10
GND3 GND3
23 23
B B GND4 GND4 GSM850_RX1 GSM850_RX1
24 24
GND5 GND5 GSM850_RX2 GSM850_RX2
WCDMA_2100 WCDMA_2100
WCDMA_850 WCDMA_850
WCDMA_1900 WCDMA_1900
PCN_PCS_TX PCN_PCS_TX
GSM850_EGSM_TX GSM850_EGSM_TX
VREG_RF_2.85V VREG_RF_2.85V
C129 C129
33p 33p
ANT_SEL0 ANT_SEL0
ANT_SEL1 ANT_SEL1
C C ANT_SEL2 ANT_SEL2
ANT_SEL3 ANT_SEL3
ANTENNA SWITCH MODULE LOGIC ANTENNA SWITCH MODULE LOGIC
ANT_SEL0 ANT_SEL0 ANT_SEL1 ANT_SEL1 ANT_SEL2 ANT_SEL2 ANT_SEL3 ANT_SEL3
GSM850/EGSM TX GSM850/EGSM TX HIGH HIGH HIGH HIGH LOW LOW LOW LOW
D D
PCN/PCS TX PCN/PCS TX HIGH HIGH LOW LOW LOW LOW LOW LOW
WB850 WB850 LOW LOW HIGH HIGH LOW LOW HIGH HIGH
WB 1900 WB 1900 LOW LOW LOW LOW LOW LOW HIGH HIGH
WB 2100 WB 2100
LOW LOW LOW LOW HIGH HIGH HIGH HIGH
GSM850 RX GSM850 RX LOW LOW HIGH HIGH HIGH HIGH LOW LOW
LOW LOW
EGSM RX EGSM RX LOW LOW HIGH HIGH LOW LOW
LOW LOW
PCN RX PCN RX HIGH HIGH LOW LOW LOW LOW
LOW LOW LOW LOW LOW LOW LOW LOW
PCS RX PCS RX
E E
GSM GSM
L115 L115 4.7nH 4.7nH
C169 C169 33p 33p
C171 C171
DNI DNI
F F
FL104 FL104 B7683 B7683
ANT ANT TX TX
L121 L121 1.5p 1.5p
RX1 RX1
RX2 RX2
GND1 GND1
L122 L122
GND2 GND2 GND5 GND5
NA NA
GND3 GND3 GND4 GND4
L125 L125 1.5p 1.5p
G G
GND3 GND3 GND4 GND4
GND2 GND2 GND5 GND5
GND1 GND1 GND6 GND6
TX TX
L131 L131 1nH 1nH
C194 C194 33p 33p
WCDMA_2100 WCDMA_2100 ANT ANT RX RX
FL106 FL106 B7646 B7646
C1001 C1001
DNI DNI
C1003 C1003 15p 15p C1004 C1004 33p 33p
H H RX_WCDMA_2100 RX_WCDMA_2100
L133 L133
2.2nH 2.2nH
1 1 2 2 3 3
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4 4 5 5 6 6
2.2p 2.2p
C102 C102
RX_GSM_850_M RX_GSM_850_M
L104 L104
GSM(869-894 MHz) GSM(869-894 MHz)
L101 L101
18nH 18nH
NA NA
C107 C107 2.2p 2.2p
RX_GSM_850_P RX_GSM_850_P
18 18 C110 C110 1.5p 1.5p
RX_GSM_900_M RX_GSM_900_M
19 19
L106 L106
16 16 L105 L105
18nH 18nH GSM(925-960 MHz) GSM(925-960 MHz)
17 17 NA NA
14 14
C115 C115 1.5p 1.5p
15 15
RX_GSM_900_P RX_GSM_900_P
12 12
13 13
C123 C123 1.8p 1.8p
20 20
WCDMA_2100 WCDMA_2100 RX_DCS_M RX_DCS_M
21 21
WCDMA_850 WCDMA_850
22 22
L108 L108 L109 L109
9 DCS(1805-1880 MHz) DCS(1805-1880 MHz)
15nH 15nH 3.9nH 3.9nH
11 11
C126 C126 1.8p 1.8p
RX_DCS_P RX_DCS_P
C128 C128 3p 3p
RX_PCS_M RX_PCS_M
PCS(1930-1990 MHz) PCS(1930-1990 MHz)
L110 L110 L111 L111
NA NA 3.3nH 3.3nH
C131 C131 3p 3p
RX_PCS_P RX_PCS_P
FL102 FL102
LMSM32AA-533 LMSM32AA-533
5
+VPWR +VPWR RFOUT RFOUT
C152 C152 C153 C153 C154 C154
4.7u 4.7u 15p 15p 1000p 1000p
C157 C157 1.5nH 1.5nH
C156 C156 15p 15p
L112 L112 U102 U102
NA NA TQM7M5012 TQM7M5012
2
BAND_SELECT BAND_SELECT
9
GSM_OUT GSM_OUT
1
DCS_PCS_IN DCS_PCS_IN
C159 C159 15p 15p C160 C160 39p 39p 11 11
DCS_PCS_OUT DCS_PCS_OUT
8
GSM_IN GSM_IN
L113 L113 7 3
GND1 GND1 TX_EN TX_EN
6.8nH 6.8nH 12 12
GND2 GND2
4
VBATT VBATT
6
NC1 NC1
10 10 5
NC2 NC2 VRAMP VRAMP
C164 C164
39p 39p
VREG_RF_2.1V VREG_RF_2.1V
C170 C170
120p 120p
WCDMA_850 WCDMA_850
RX_W_2100_LNA_OUT RX_W_2100_LNA_OUT
U103 U103
LDC15836M20Q-360 LDC15836M20Q-360
L120 L120 2.7nH 2.7nH
C177 C177 56p 56p
C178 C178
RX_WCDMA_850_P RX_WCDMA_850_P C180 C180 2200p 2200p
C181 C181
1.2p 1.2p
DNI DNI
L123 L123
12nH 12nH
RX_WCDMA_850_M RX_WCDMA_850_M
R116 R116
PDET_IN PDET_IN
82 82
PWR_DET PWR_DET
NC4 NC4 VCC1_CELL VCC1_CELL
13 13 6
RFOUT_CELL RFOUT_CELL RFIN_CELL RFIN_CELL
14 14 5
NC5 NC5 VMODE_CELL VMODE_CELL
15 15 4
RFOUT_PCS RFOUT_PCS VREG_CELL VREG_CELL
16 16 3
NC6 NC6 RFIN_PCS RFIN_PCS
17 17 2
U105 U105
NC7 NC7 VREG_PCS VREG_PCS
18 18 1
LDC151G8820Q-359 LDC151G8820Q-359
L130 L130 2.2nH 2.2nH
C188 C188 5.6p 5.6p
RF5184 RF5184
C199 C199 C195 C195
U104 U104
DNI DNI 1p 1p
C1002 C1002 2200p 2200p
VREG_RF_2.85V VREG_RF_2.85V
L132 L132 C1005 C1005
1nH 1nH 2200p 2200p
PWR_DET PWR_DET
4 4 5 5 6 6
7 7 8 8 9 9
R101 R101
TX_DCS_PCS TX_DCS_PCS
27 27
S21 : -4.5 dB S21 : -4.5 dB
S11 : -54 dB S11 : -54 dB
R104 R104
TX_GSM TX_GSM
30 30
U101 U101 RTR6280 RTR6280
S21 : -5 dB S21 : -5 dB
58 58 64 64
HB_RF_OUT2 HB_RF_OUT2 TX_IP TX_IP
22p 22p 59 59 63 63
C108 C108
WCDMA_2100_TX_OUT WCDMA_2100_TX_OUT HB_RF_OUT3 HB_RF_OUT3 TX_IN TX_IN
56 56 66 66
C111 C111 22p 22p
HB_RF_OUT1 HB_RF_OUT1 TX_QP TX_QP
C112 C112 100p 100p
55 55 65 65
LB_RF_OUT1 LB_RF_OUT1 TX_QN TX_QN
C113 C113 100p 100p
57 57
WCDMA_850_TX_OUT WCDMA_850_TX_OUT LB_RF_OUT2 LB_RF_OUT2
26 26 2
TX_ON TX_ON RF_ON RF_ON TCXO TCXO
C114 C114
67 67 5
DAC_REF DAC_REF DAC_IREF DAC_IREF VTUNE1 VTUNE1
20 20 14 14
SSBDT_RTR SSBDT_RTR SBDT SBDT PRX_IP PRX_IP
13 13
PRX_IN PRX_IN
R107 R107
68 68
TX_RBIAS TX_RBIAS
11 11
12K 12K PRX_QP PRX_QP
50 50 12 12
RX_GSM_850_P RX_GSM_850_P GCELL_INP GCELL_INP PRX_QN PRX_QN
51 51
RX_GSM_850_M RX_GSM_850_M GCELL_INN GCELL_INN
48 48 23 23
RX_GSM_900_P RX_GSM_900_P EGSM_INP EGSM_INP VDDM VDDM
49 49
RX_GSM_900_M RX_GSM_900_M EGSM_INN EGSM_INN
46 46 3
RX_DCS_P RX_DCS_P DCS_INP DCS_INP VDDA1_1 VDDA1_1
47 47 4
DCS_INN DCS_INN VDDA1_2 VDDA1_2
RX_DCS_M RX_DCS_M
44 44 6
GPCS_INP GPCS_INP VDDA1_3 VDDA1_3
RX_PCS_P RX_PCS_P
45 45 10 10
RX_PCS_M RX_PCS_M GPCS_INN GPCS_INN VDDA1_4 VDDA1_4
22 22
VDDA1_5 VDDA1_5
C127 C127 22p 22p 32 32 53 53
WPRXHBP WPRXHBP VDDA1_6 VDDA1_6
33 33
WPRXHBN WPRXHBN
30 30 1
RX_WCDMA_850_P RX_WCDMA_850_P WPRXLBP WPRXLBP VDDA2_1 VDDA2_1
31 31 7
RX_WCDMA_850_M RX_WCDMA_850_M WPRXLBN WPRXLBN VDDA2_2 VDDA2_2
21 21
VDDA2_4 VDDA2_4
36 36 25 25
RX_WCDMA_2100 RX_WCDMA_2100 WPRXSE2 WPRXSE2 VDDA2_5 VDDA2_5
38 38 27 27
WPRXSE1 WPRXSE1 VDDA2_6 VDDA2_6
54 54
VDDA2_9 VDDA2_9
60 60
C130 C130
VDDA2_10 VDDA2_10
8 61 61
18p 18p NC1 NC1 VDDA2_11 VDDA2_11
9 62 62
NC2 NC2 VDDA2_12 VDDA2_12
15 15
NC4 NC4
16 16 40 40
NC5 NC5 NC11 NC11
17 17 41 41
NC6 NC6 NC12 NC12
18 18 42 42
NC7 NC7 NC13 NC13
19 19 43 43
NC8 NC8 NC14 NC14
37 37
NC9 NC9
39 39 52 52
NC10 NC10 PDET_IN PDET_IN
1
RFIN RFIN TX_GSM TX_GSM
69 69
PGND PGND
R111 R111
7
VC VC GSM_SAW_SW_MODE GSM_SAW_SW_MODE
100ohm 100ohm
C155 C155
100p 100p
C158 C158
0.01u 0.01u
GSM_PA_BAND GSM_PA_BAND
TX_DCS_PCS TX_DCS_PCS
GSM_PA_EN GSM_PA_EN GSM_PA_BAND GSM_PA_BAND MODE MODE
TCXO TCXO
LOW LOW GSM GSM
HIGH HIGH DCS/PCS DCS/PCS
R113 R113
GSM_PA_RAMP GSM_PA_RAMP
2.2K 2.2K
GSM_PA_EN GSM_PA_EN PA STATE PA STATE
C165 C165 C166 C166
LOW LOW OFF OFF
DNI DNI DNI DNI
HIGH HIGH ON ON
GSM_SAW_SW_MODE GSM_SAW_SW_MODE MODE MODE
LOW LOW GSM900 GSM900
HIGH HIGH GSM850 GSM850
L116 L116 1nH 1nH
L114 L114
WB_MIX_INM WB_MIX_INM
2nH 2nH
2 3
L117 L117
C172 C172 33p 33p 1 G1 G1 O1 O1
FL103 FL103 C174 C174
IN IN
SAFEB2G14FA0F00 SAFEB2G14FA0F00
3.9nH 3.9nH G2 G2 O2 O2
0.5p 0.5p
5 4
C173 C173
0.75p 0.75p
L118 L118 1nH 1nH
WB_MIX_INP WB_MIX_INP
PA_ON0 PA_ON0
VREG_RF_2.85V VREG_RF_2.85V
FL105 FL105
4 5 EFCH836MTDB1 EFCH836MTDB1
L126 L126 O1 O1 G3 G3 1
C186 C186
IN IN WCDMA_850_TX_OUT WCDMA_850_TX_OUT
18nH 18nH G2 G2 G1 G1
2200p 2200p
3 2
C187 C187
VREG_WCDMA_PA VREG_WCDMA_PA DNI DNI
FL107 FL107
SAFEB1G95KA0F00 SAFEB1G95KA0F00
3
L128 L128
4 G3 G3 1
OUT OUT IN IN WCDMA_2100_TX_OUT WCDMA_2100_TX_OUT
2.7nH 2.7nH G2 G2 G1 G1
5 2
C196 C196 C197 C197
C198 C198 C189 C189 DNI DNI DNI DNI
4.7u 4.7u
1000p 1000p
VREG_RF_2.85V VREG_RF_2.85V
C1006 C1006
1000p 1000p PA_ON1 PA_ON1
7 7 8 8 9 9
- 155 -
10 10 10 10 11 11 11 11 12 12 12 12
TX_IP TX_IP
C103 C103
68p 68p
TX_IM TX_IM
TX_QP TX_QP
C109 C109
68p 68p
TX_QM TX_QM
TCXO_RTR TCXO_RTR VREG_MSMP_2.7V VREG_MSMP_2.7V
0.01u 0.01u
C116 C116 C117 C117
RX_IP RX_IP 100p 100p 0.1u 0.1u
RX_IM RX_IM
RX_QP RX_QP
RX_QM RX_QM C120 C120
C121 C121 FB101 FB101
C122 C122 0.1u 0.1u
22p 22p
0.1u 0.1u VREG_S3_2.7V VREG_S3_2.7V
C124 C124 C125 C125
100p 100p 4.7u 4.7u
R109 R109
R108 R108 51 51
VREG_S2_2.1V VREG_S2_2.1V
R110 R110 5.1 5.1
0
C144 C144 C145 C145 C146 C146
1u 1u 0.1u 0.1u 22u 22u
C151 C151
PDET_IN PDET_IN
33p 33p
X101 X101
DSA321SCE-19.2M DSA321SCE-19.2M
R112 R112
4 1
VREG_TCXO_2.85V VREG_TCXO_2.85V VCC VCC VCONT VCONT TRK_LO_ADJ TRK_LO_ADJ
100ohm 100ohm
3 2
C161 C161 C162 C162 OUTPUT OUTPUT GND GND C163 C163
0.1u 0.1u 0.01u 0.01u 0.01u 0.01u
8 5
NC4 NC4 NC1 NC1
7 6
NC3 NC3 NC2 NC2
C167 C167
TCXO_PM TCXO_PM
1000p 1000p
C168 C168
TCXO_RTR TCXO_RTR
1000p 1000p
BLUE TOOTH BLUE TOOTH
BT101 BT101
NC1 NC1
C175 C175 DNI DNI
FEED FEED NC2 NC2
C176 C176
1.8nH 1.8nH
L119 L119
NA NA
16 16
ANT ANT
C179 C179 1000p 1000p
9 4
BT_CLK BT_CLK CLK_REF CLK_REF SBST SBST BT_SBST BT_SBST
M101 M101 11 11
SBCK SBCK BT_SBCK BT_SBCK
3 12 12
VCC_OUT VCC_OUT SBDT SBDT BT_SBDT BT_SBDT
LBRQ-2B43A LBRQ-2B43A
2 5
VDD_INT VDD_INT SYNC_DET_TX_EN SYNC_DET_TX_EN BT_TX_RX_N BT_TX_RX_N
R115 R115
10 10 13 13 0
C182 C182 C183 C183 VDD_MSM VDD_MSM RX_BB_TX_BB RX_BB_TX_BB BT_DATA BT_DATA
1u 1u 1u 1u
14 14 7 C184 C184 1000p 1000p
VDD_BAT VDD_BAT XTAL_IN XTAL_IN TCXO_BT_PM TCXO_BT_PM
20 20 19 19 18 18 17 17 15 15 8 6 1
VREG_MSMP_2.7V VREG_MSMP_2.7V
VREG_BT_2.85V VREG_BT_2.85V
C190 C190 C191 C191 C192 C192 C193 C193
100p 100p 0.1u 0.1u 2.2u 2.2u 100p 100p
smd_1608h_9_r smd_1608h_9_r
10 10 10 10 11 11 11 11 12 12 12 12
LGE Internal Use Only
A A
B B
C C
D D
E E
F F
G G
H H