LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
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MODE
LOW
GSM_PA_BAND
DCS/PCS
HIGH
9dB
GSM
5dB
100
R1014
R1015
100
15p
C
1037
30
R1010
C1009
1p
2.7nH
L1012
R1003
1K
4.7u
C1036
8.2p
C1045
15p
C1044
1.8nH
L1002
R1005
2.2K
KMS-518
SW1000
A
C
G1
G2
VBATT
C1040
39p
180
R1011
ANT101
GND3
10
GND4
23
24
GND5
GSM850_EGSM_TX
11
12
GSM850_RX1
13
GSM850_RX2
9
PCN_PCS_TX
PCN_RX1
16
PCN_RX2
17
PCS_RX1
18
19
PCS_RX2
7
VDD
22
WCDMA_1900
WCDMA_2100
20
WCDMA_850
21
D5015
FL1000
ANT
2
CTRL1
3
CTRL2
4
5
CTRL3
6
CTRL4
EGSM_RX1
14
15
EGSM_RX2
GND1
1
GND2
8
C1004
51p
180
R1012
33p
C1046
C1039
1000p
C1047
DNI
R1006
1K
1K
R1004
ANT100
C1031
0.1uF
11
DCS_PCS_OUT
GND1
7
12
GND2
GSM_IN
8
9
GSM_OUT
6
NC1
NC2
10
3
TX_EN
4
VBATT
VRAMP
5
TQM7M5012
U1001
BAND_SELECT
2
1
DCS_PCS_IN
C1003
15p
L1011
12nH
1K
R1002
VREG_S3_2.7V
L1008
15nH
8.2nH
L1004
R1013
62
ANT_SEL0
ANT_SEL1
ANT_SEL2
ANT_SEL3
TX_DCS_PCS
TX_GSM
GSM_PA_EN
GSM_PA_BAND
GSM_PA_RAMP
TP1
TP2
TP5
TP3
TP4