LG GT500 - Page 123

- 124 -
LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
4.16.2 Step 2
Figure 4-6. Step 2 : GSM PAM Block
d
(Bottom)
GSM PAM
TP3
TP5
TP4
TP1
TP2
Main Board (bottom side)
- Power Source Block
g
GSM PA WITH ASM
0
R114
0
R115
0R112
33pC113
_TXEN
8
LB_RF_IN
39
MODE
PGND1
31 32
PGND2 PGND3
33 34
PGND4
RSVD
10
RX1
16
15
RX2
RX3
14
13
RX4
VAPC
4
VBATT
5
WCDMA1
18
19
WCDMA2
WCDMA3
20
BS1
7
6
BS2
GND1
2
27
GND10
GND11
28
29
GND12
GND13
30
11
GND2
GND3
12
21
GND4
GND5
22
GND6
23
GND7
24
25
GND8
GND9
26
1
HB_RF_IN
SKY77521
U101
17
ANT
C139 22p
22pC112
VBAT
C140 22p
DNI R106
R111 0
100pL102
KMS-518
SW100
A C G1 G2
C132 DNI
DNI
C126
10u C107
22pC114
47p C109
C130 22p
DNIR108
R105 0
22p C129
22pC125
ANT
G1
G2
0.01u C108
SW101
UFL-R-SMT10
WRF_BAND_2
WRF_BAND_1
GRX_1800
GRX_1900
GTX_VAM
ANTSW3
ANTSW2
ANTSW0
ANTSW1
GTX_1800_1900
GTX_850_900
WRF_BAND_8_5
GRX_850
GRX_900
TP3 TP4 TP5