LG P705 - Page 36

4. TROUBLE SHOOTING
- 36 -
Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
5001R
031
4001R
031
SW1001
43
2
1
ANT CO M MON
G3 G4
1.8n
C1094
R1003
47
33pC1107
C1071
100p
1.8pC1096
C1095 1.8p
C1033
10u
L1037
10n
R1001
0
DNI
L1043
2.7n
C1106
C1098
22p
2.7n
L1040
2.7nL1041
C1103
3.3p
L1034
8.2n
C1105
22p
02
0
1R
K72
22nL1035
DN I
C1100
FL1007
942.5MH z
45
1
32
G1
O 1
IN
G2 O2
DN I
C1101
C1099
2.7p
VBA T
L1039
2.7n
10p
C1097
U1003
9
8
7
6
5
01 4 11 3 21 2 31 1
14
15
16
17
PGN D
RFO U TM
RFO U TH
RFO U TL
CNFERR
SGV1NEV
CCV2NEV
1HDNGFRLNIFR 2HDNGFR
RFINM
RFINH
RFG NDM1
RFG NDM2
10n
C1104
VREG_RF_2. 7V
L1021
DN I
C1073
6.8n
4.7n
L1018
1950MHz, 2140MHz
FL1005
95
84
72
3
6 1
RXANT
TX
GND1 GND4
GND2 GND5
GND3 GND6
2101R
001
FL1004
1950MH z
5 2
4 1
3
G3
INO U T
G1G2
9701C
p001 p001
8701C
p001
6
701C
L1015
8.2n
100p
C1081
L1030
6.8n
15n
L1029
L1016
DN I
U 1002
PG N D 1
15
IN_BA ND_VIII
1
O UT_BA ND_VIII
14
VMO DE_0
2
GN D 3
13
VMO DE_1
3
VCC2_2
12
VCC2_1
4
GN D 2
11
VEN _BA N D _VIII
5
O UT_BA ND_I
10
VEN _BA N D _I
6
GN D 1
9
IN_BA ND_I
7
CPL_O U T
8
PG N D 2
16
330p
C1066
1n
C1065
DN I
C1083
L1022
3.3n
1p
C1074
12n
C1072
18pC1064
C1082
2.2n
5.6n
L1020
897.5 MH z
FL1003
5 3 2
4 1
IN
O U T
G1G2G3
7701C
p001
L1027 1.5n
L1023
8.2n
33p
C1080
L1025
0.5p
L1024
DN I
C1084
2.2n
L1017
DN I
C1068
15p
DNI
C1102
2.2n
L1038
39n
L1033
L1031
1.2n
FL1002
897.5MHz,942.5MHz
75
84
92
3
16
ANT
RX
TX
GND1 GND6
GND2 GND5
GND3 GND4
10u
C1067
DNI
L1042
001
1101R
R1010
62
C1009 100p
33
R1006
L1014
0.5p
L1011
0.75p
12n
L1010
L1013
33n
U 1000
31N
01K 9K
8K 7K
6K 5K 4K 01J 9J 8J 7J 6J 5J 4J 01H 9H 8H 7H 6H 5H 4H 01G 9G 8G 7G 6G 5G 4G
01F
9F 8F 7F 6F 5F 4F
01E
9E 8E 7E 6E 5E 4E
01D
9D 8D 7D 6D 5D 4D
N7
4N
1N
21M 11M 01M
M9
4M 21K
21H
21G
21F
2E
2C
1
1B 8B 7B 2B
31A
1A
5M 8M 8
N
31M 21N
N6
N3
M6
L12
G2L13
F 13K13
F 2A2
B10A12
B6G13
B1
A6D12
A5E12
H 2D13
H 1E13
F 1
D2B12
D1C12
A11
B13
A3C13
N2J13
J12
M2
M1H 13
L2
L1N11
N10
K1
K2N9
J2
J1A7
A8
G1A9
N5
E1B9
A10
B4
B3M3
B5C1
A4M7
RF_O N
TX _IP
TCXO
TX _IN
SBD T TX _Q P
TX _Q N
LB_RF_O U T1
LB_RF_O U T2 VTU N E1
VTU N E2
HB_R F_O U T1
VTU N E_G PS
HB_R F_O U T2
HB_R F_O U T3 PRX_Q P
PRX_Q N
W PRXLBP PRX_IP
PRX_IN
W PRXHBP
W PRXHBM
DRX_QP
DRX_QN
W DRXLB
DRX_IP
DRX_IN
W DRXHB1
W DRXHB2
NC
GCELL_IN P
DAC_IREF
GCELL_IN N
VDD A 1 _1
EG SM_IN P
VDD A 1 _2
EG SM_IN N
VDD A 1 _3
VDD A 1 _4
DCS_IN P
VDD A 1 _5
DCS_IN N VDD A 1 _6
GPC S_INP
VDD A 2 _1
GPC S_INN
VDD A 2 _2
VDD A 2 _3
GPS _IN VDD A 2 _4
PDET_IN
VDD A 2 _5
TX _RBIA S
VDD A 2 _6
W PRXSE1 VDD A 2 _7
W PRXSE2 VDD A 2 _8
VDD A 2 _9
VDD A 2 _10
VDD A 2 _11
VDD A 2 _12
TUO_2ESXRPW
TUO_1ESXRPW
PNI_XM_BW
MNI_XM_BW
MSM_DDV
1DNG 2DNG 3DNG 4DNG 5DNG 6DNG
7DNG
8DNG 9DNG 01DNG 11DNG 21DNG
7_1ADDV
W PRXLBM
31DNG 41DNG
51DNG
61DNG
8_1ADDV
VDD A 2 _13
82DNG 81DNG 04DNG 54DNG 12DNG 55DNG 16DNG
71DNG
03DNG 91DNG 44DNG 84DNG 95DNG 32DNG 62DNG
23DNG
93DNG 64DNG 25DNG 45DNG 26DNG
42DNG 13DNG
83DNG 34DNG 94DNG 22DNG 06DNG 72DNG
53DNG 14DNG 02DNG
15DNG 75DNG 46DNG 92DNG 43DNG
73DNG 24DNG
05DNG
65DNG
56DNG 52DNG 33DNG 63
D
NG
74DNG 35DNG
85DNG 36DNG
6
6
D
N
G
0.1u
C1019
C1054
0.1u
C1020
0.1u
C1021
0.1u 0.1u
C1022
C1046
0.1u 0.1u
C1047
4.7u
C1048C1045
0.1u
C1044
0.1u0.1u
C1043
0.1u
C1042C1039
0.1u
C1041
4.7u4.7u
C1038
0.1u
C1037C1035
0.1u
C1036
4.7u
C1040
0.1u
C1055
4.7u
VREG _RF_2.7V _RTR
100pC1030
12KR1007
1301C
DN I
C1026
100p
L100 8
5.6n
0.1u
C1027
33p
C1006
VRE G _RF_2.7V
100p
C1002
C1016
0.1u
C1007
1n
100p
C1003
33p
C1010
C1028
10u
1n
C1015
VSNS_RF_SMPS_2.1V
R1002
0
C1004
10n
C1005
10n
C1029
4.7u
C1017
4.7u
VRE G _SMPS_2.1V
150p
C1000
C1001
150p
C1008
150p
150p
C1011
33p
C1032
K13101R
0
R1014
DNI
R1015
u1.05801C
3.9p
C1086
L1026
2n
DNI
C1087
C1093
3.9p
DNI
C1090
1n
C1049
U1001
GND1
2
VBA T T
5
01DNG
72
GND2
19
9DNG
62
GND3
20
8DNG
52
GND4
21
ANT
18
PGND3
31
PGND2
30
PGND1
29
GND5
22
6DNG
32
7DNG
42
PGND6
34
PGND5
33
PGND4
32
7DNGP
53
8DNGP
63
9DNGP
73
PGND1 0
38
PGND1 1
39
PGND1 2
40
PGND1 3
41
PGND1 4
42
PGND1 5
43
PGND1 6
44
HB_IN
1
11DNG
82
LB_IN
3
VA PC
4
BS2
6
BS1
7
TXEN _
8
EDOM
9
W CD M A3
17
PMET
01
4XR
11
3XR
21
2XR
31
1XR
41
W CD M A1
15
W CD M A2
16
R1000
2.2K
L1003
82n
L1006
0.5p
L1001
DNI
VBAT
L1004
8.2n
FL1001
1842.5M Hz,1960M H z
103
52
81
9
6
74
IN _1842_5
O U T_1842_5_1
O U T_1842_5_2
O U T_1960_1
IN _1960 O U T_1960_2
GND1 GND3
GND2 GND4
C1059
1.2n
C1057
2.2n
C1061
100p
C1063
1.2n
C1053
2.2n
12n
C1023
10n
L1007
100n
L1002
12n
C1025
C1014 3.3p
C1012
3.3p
8001R
19
47p
C1034
C1051
1n
VSNS_RF_SMPS_2.1V
L1028
1.2n
33pC1088
C1052
1n
C1050
1n
9001R
19
C1024
39p
2140MHz
FL1006
45
1
32
G1
O 1
IN
G2 O 2
C1089
3.3n
FL1000
881.5MHz,942.5MHz
103
52
81
9
6
74
IN _881_5
O U T_881_5_1
O U T_881_5_2
O U T_942_5_1
IN _942_5 OUT_942_5_2
GND1 GND3
GND2 GND4
DNI
L1000
C1013
100p
3.9n
C1018
L1005
DNI
C1056 2.4n
DNI
L1009
C1058
18p
4.7n
L1012
SW1000
G1
ANTG2
22p
C1060 C1062
0.1u
L1032
1.2n
GND
TX_O N
AN T_SEL[2]
ANT_SEL[2]
ANT_SEL[1]
GSM_PA _RA M P
PA _R0
PA _R1
TX_Q _M
TX_Q _P
TX_I _M
TX_I _P
RX0 _I_M
RX0 _I_P
RX0 _Q _M
RX0 _Q _P
RX1 _Q _P
RX1 _Q _M
RX1 _I_M
RX1 _I_P
GPS_I N
WCDMA_LB_RTX
WCDMA _LB_RTX
ANT_SEL[3]
GSM_L B_TX
GSM _LB_TX
GSM_HB_TX
GSM _H B_TX
PD ET_IN
PD ET_IN
PA _O N1
PA _O N0
AN T_SEL[0]
ANT_SEL[0]
VRE G _MSM E_1.8V
RTR6285_SSBI
DA C_REF
TCX O _RTR_19.2MH Z
WCDMA_HB_RTX
WCDMA _HB_RTX
W CD MA _LB_TX
W CD MA _LB_TX
W CD MA _HB_TX
W CD MA _HB_TX
PNI_XIM_BH_AMDCW
WCDMA _HB_MIX_INP
MNI_XIM_BH_AMDCW
WCDMA _HB_MIX_INM
GSM900_RX_M
GSM 900_RX_M
GSM900_RX_P
GSM 900_RX_P
PCS_RX_M
PCS_RX _M
PCS_RX_P
PCS_RX _P
WCDMA1900_RX_LNA_OUT
WCD M A 1900_RX_LN A_O U T
WCDMA2100_RX_LNA_OUT
WCD M A 2100_RX_LN A_O U T
W CDMA _H B_RX
W CD MA _HB_RX
W CDMA _LB_RX_M
W CD MA _LB_RX_M
W CDMA _LB_RX_P
W CD MA _LB_RX_P
GSM850_RX_P
GSM 850_RX_P
GSM850_RX_M
GSM 850_RX_M
DCS_RX_P
DCS_RX_P
DCS_RX_M
DCS_RX_M
VRE G _RF_2.7V_RTR
1m m
Near to 4 Pin Near to 12 Pin
Near to 12 Pin
BAND2(2520): ACMD-7407
BAND1(2520): B7697
BAND8(2520) : SAYRJ 897MCA0B0A
BA N D 15:
BA N D 25:
BA N D 18:SKY77195
0603
W900/ 850
W2100/ 1900
BAND5(2520) : B7671
WCDMA Dual
1%
Nea r To RTR
GSM850(824-849MHz )
GSM900(880-915MHz )
HIGHHIGH
W1700
LOW
LOW
HIGH
LOW
HIGH
HIGH
HIGH
DCS1800/PCS1900 TX
GSM850/GSM900 TX
PCS1900 RX
HIGHHIGH
HIGH
LOW
LOW
LOWLOW
HIGH
HIGH
HIGH
HIGH
LOW (X)
W900(W850)
LOW (X)
LOW (X)
LOW (X)
LOWLOWLOW
LOW LOW LOW
LOWHIGHHIGH
LOW
ANTENNA SWITCH MODULE LOGIC(SKY77544)
LOW
ANT_SEL3
DCS1800 RX
GSM900 RX
ANT_SEL2ANT_SEL1ANT_SEL0
GSM850 RX
LOW
W2100
0603
FEM
GSM Qu ad
2m m
7.4dB
DCS(1805-1880 MHz)
PCS(1930-1990 MHz)
GSM(925-960 MHz)
GSM( 869-894 MHz)
7dB
PCS(1850-1910 MH z)
DCS(1710-1785 MH z)
0603
0603
0603