Only For Training And Service Purposes - LG L704I Service Manual

4. TROUBLE SHOOTING
4.4.2. Checking TX POWER of UMTS 800MHz
TP4
LGE Internal Use Only
TP3
TP1
- 88 -
C1400 56p
56nH
L14
FL34
LMSP54MA-543
14
VC1
15
VC2
16
VC3
13
VDD
1
GND1
2
GND2
4
GND3
5
GND4
8
GND5
10
GND6
12
GND7
17
GND8
18
GND9
8
C1646 68p
C2005 7p
7
6
8.2nH 5
NA
9
L2003
C1473
TP1: C1646
TP4: C1667
WCDMA_800
TP2
Copyright © 2007 LG Electronics. Inc. All right reserved.
TP3: C1400
19
GSM900_RX1
20
GSM900_RX2
21
GSM1800_RX1
22
GSM1800_RX2
23
GSM1900_RX1
24
GSM1900_RX2
3
GSM1800_1900TX
6
GSM900TX
7
UMTS2
9
UMTS1
25
PIN_DIREC1
26
PIN_DIREC2
SFAY0008901
AWT6307R U574
1
GND1 VEN
R1305
0603
2
RFOUT VMODE PA_R0
0
C1667
3
GND2 RFIN
VCC
4
BGND VBATT +VPWR
C1645 C1628
10u
68p
68p C1419
TP2: C1419

Only for training and service purposes

PA_O
68p