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4. TROUBLE SHOOTING
LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
+2.75V
SFAY0010801
C
G1
G2
KMS-518
SW101
A
C39
DNI
GND3
23
GND4
GND5
24
GSM850_EGSM_TX
11
12
GSM850_RX1
13
GSM850_RX2
9
PCN_PCS_TX
PCN_RX1
16
PCN_RX2
17
PCS_RX1
18
PCS_RX2
19
VDD
7
22
WCDMA_1900
WCDMA_2100
20
WCDMA_850
21
D5015
2
ANT
CTRL1
3
CTRL2
4
CTRL3
5
6
CTRL4
EGSM_RX1
14
15
EGSM_RX2
1
GND1
8
GND2
10
FL102
ANT102
L103
100nH
0.1u
C34
C40
33p
0
R102
C35
33p
C42
33p
C41
DNI
33p
C5
C11
0.75p
VREG_SYNTH
0
C4
0.75p
L104
15nH
L109
ANT_SEL3
ANT_SEL0
ANT_SEL1
ANT_SEL2
SFSY0034601
W2100 TX(1920 - 1980 MHz)
Rev.C
W850 RX(869 - 894 MHz)
SDDY0004701
WCDMA RX 2100 LNA Circuit
WCDMA RX 1900 LNA Circuit
W850 TX(824 - 849 MHz)
Band V
W1900 RX(1930 - 1990 MHz)
W2100 RX(2110 - 2170 MHz)
Band II
W1900 TX(1850 - 1910 MHz)
WCDMA
SDPY0002902
SFSY0028201
Band I
Rev.C
SDMY0001501
C94
2.7p
2.7nH
L140
10nH
L121
2.2nH
L137
33p
C112
33p
C138
DNI
R137
1K
C135
2.7nH
L142
C134
1p
C89
33p
G2
G3
G4
G5
G6
G7
RX
TX
FL109
ACMD-7402-TR1G
ANT
G1
2.2nH
C139
L141
3.3p
0.1u
C123
L120
NA
R136
1K
L143
4.7nH
33p
C113
33p
C104
C116
33p
33p
C111
L133
4.7nH
100p
C124
C127
3.3p
G1
2
G2
5
IN
1
O1
3
O2
4
FL113
SAFEB2G14FB0F00
C101
0.1u
33p
C132
3.3nH
L129
33p
C115
VDD_RX
33p
C130
DNI
C93
100p
C102
L126
2.2nH
C103
33p
L130
VDD_RX
NA
NA
L131
33p
C114
33p
C126
33p
C110
2
G1
5
G2
1
IN
3
O1
4
O2
SAFEB1G96FL0F00
FL110
DNI
C137
C90
33p
GND2
GND3
GND4
GND5
RX1
RX2
TX
B7683
FL107
ANT
GND1
C136
DNI
L134
1.8nH
C91
2.7p
ANT
GND1
GND2
GND3
GND4
GND5
GND6
RX_OUT
TX_IN
B7684
FL112
RX_WCDMA_2100
RX_WCDMA_1900_LNA_OUT
WB1900_MIX_INP
WB1900_MIX_INM
RX_WCDMA_850_M
RX_WCDMA_1900
RX_WCDMA_850_P
WB2100_MIX_INP
RX_WCDMA_2100_LNA_OUT
WB2100_MIX_INM
TP1
TP2
TP3
TP4
Summary of Contents for CT815
Page 1: ...Date May 2009 Issue 1 0 Service Manual Model CT815 Service Manual CT815 Internal Use Only ...
Page 221: ...Note ...
Page 222: ...Note ...