Only For Training And Service Purposes - LG GT500 Service Manual

4. TROUBLE SHOOTING
4.16.2 Step 2
GSM PAM
(Bottom)
Figure 4-6. Step 2 : GSM PAM Block
GTX_850_900
GTX_1800_1900
R111 0
ANTSW2
R112 0
ANTSW1
R114
ANTSW0
R115
ANTSW3
LGE Internal Use Only
TP4
TP5
TP3
TP3
GND13 VBATT
30 5
GND12 VAPC
29 4
GND11
28 C112
GND10 WCDMA3
27 20 C113
GND9 WCDMA2
26 19 C114
GND8 WCDMA1
25 18
GND7
24
GND6 RX1
U101
23 16
GND5 RX2
22 15
GND4 RX3
21 14
GND3 RX4
12 13
GND2
R108
11
GND1 RSVD
2 10
LB_RF_IN MODE
3 9
HB_RF_IN
1
_TXEN
8
BS2
6
BS1 ANT
7 17
SKY77521
0
0
GSM PA WITH ASM
TP1
Main Board (bottom side)
- Power Source Block
TP4 TP5
VBAT
22p
WRF_BAND_2
33p
WRF_BAND_8_5
22p
WRF_BAND_1
GRX_850
GRX_900
GRX_1800
GRX_1900
DNI SW100
KMS-518
L102
C125 22p
- 124 - Copyright © 2009 LG Electronics. Inc. All right reserved.
TP2
R105 0
GTX_VAM
SW101
UFL-R-SMT10
100p
G1
ANT G2

Only for training and service purposes