Only For Training And Service Purposes - LG U370 Service Manual

4.6.3 Checking RF Rx Level
MM8430-2600RB3
SW100
TP3
WCDMA
2.7nH
L114
FL102
4 1
PGND RX
3 2 C162
ANT TX
3.3p
ACMD-7602
L118
NA
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Only for training and service purposes

TP1
C100
56p
L102
100nH
U100
+VPWR
C156 C158
4.7u
0.01u
U103
L116
2.2p
C164
C165
3.3nH
10nH
20dB
U103
CP0402A1950DNTR
PWR_DET
R120
R121 R122
47
130 130
7dB
- 83 -
4. TROUBLE SHOOTING
U100
FL10
U101
TP2
VREG_RF_SMPS
C111
47p
C122 C123
NA 15p
+VPWR
U104
C159
0.01u
WS2512_TR1G U104
10 1
VCC2 VCC1
9 2
GND4 RFIN
8 3
RFOUT GND1
7 4
PA_R0
GND3 VCONT
6
GND2
11 5
BGND VREF
TR100
KRX102U
C167
TR100
100p
TP1
TP2
TP3
TP4
19 5
VDD GSM900_RX1
6
U100
GSM900_RX2
1
GSM1800_RX1
2
GSM1800_RX2
7 3
GND1 GSM1900_RX1
8 4
GND2 GSM1900_RX2
10 9
GND3 WCDMA2100
12
GND4
13 18
GND5 CTRL1
15 22
GND6 CTRL2
17
GND7 D5011
20
GND8
21 16
GND9 GSM900_TX
23 14
GND10 GSM18001900_TX
FL101
C155
33p
FL101
EFCH1950TDF1
4 5
O1 G3
1
L115
C160
IN
G2 G1
5.6nH
TP3
NA
3 2
TP4
PA_ON
VREG_TCXO_2.85V
C435
1u
L122 C168
1.8nH 10p
L123
2.7nH
LGE Internal Use Only