4.16.2 Checking RF Tx Level
- 102 -
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
GSM_PA_BAND
DNI
C114
PCS
GSM
DCS
L101
18nH
L113
L104
5.6nH
56p
C133
L105
22nH
C135
82p
10n
C134
5.6nH
L107
C100
100p
C141
L
0
R109
t
C
2
C109
8.2nH
L114
NA
L115
PGND5
PGND6
22
PGND7
23
24
PGND8
25
PGND9
4
RSVD1
8
RSVD2
12
RSVD3
TX_EN
1
6
VAPC
VBATT
5
GSM_OUT
17
PGND1
PGND10
26
PGND11
27
PGND12
28
29
PGND13
30
PGND14
PGND15
31
32
PGND16
33
PGND17
PGND18
34
PGND19
35
18
PGND2
36
PGND20
PGND3
19
PGND4
20
21
SKY77329
U101
BS
3
DCS_PCS_IN
2
16
DCS_PCS_OUT
GND1
10
GND2
11
13
GND3
GND4
14
15
GND5
7
GSM_IN
9
G1
G2
RF
SW101
KMS-507
ANT
20
GND5
22
GND6
23
GND7
24
GND8
11
GSM850_EGSM_TX
18
GSM850_RX1
GSM850_RX2
19
PCN_PCS_TX
9
PCN_RX1
12
PCN_RX2
13
PCS_RX1
14
PCS_RX2
15
7
VDD
WCDMA_2100
21
DGM112M02
ANT
1
CTRL1
4
CTRL2
5
CTRL3
6
EGSM_RX1
16
17
EGSM_RX2
2
GND1
3
GND2
GND3
8
GND4
10
FL100
L1
6.8
1.5nH
L110
47nH
18nH
L111
4
L1
6.8
C112
10n
100p
L109
18nH
1p
C117
1000p
[Fig. 4.13] Schematic of the GSM Tx Block
[Fig. 4.14] Test Point of GSM Tx Block
TP1
TP2
TP3
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