LG -P970 Service Manual page 121

4.5.5 Checking RF Rx Level
TP5
Test Point (RF Rx Level)
GSM_TX
PA_RAMP
DCS_PCS_TX
LGE Internal Use Only
TP4
ENWY0003901(Hirose)
SW101
SW102
G1
G2 ANT ANT
1
L133
1.2n
C170
C171
1.8p
1.8p
PA_POW_DET
SS
VBAT
DRW
CLK
VSPI
C178
1u
C180
15p
C185 15p
TP3
Bias
TP1 TP1
C142 33p
2
COMMON
G3 G4
3 4 L107
27n DNI
VBAT
C150 C151 C152
22u
10n 22p
25
TX_LB
24
GND_LB
23
DET
22
SS
21
DRW
U104
20
CLK
19
VSPI
C179 0.1u 18
GND_SPI
17
VCMOS
16
VRAMP
15
GND_HB
14
TX_HB
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4. TROUBLE SHOOTING
TP2
L108
1
ANT
2
GND1
3
RX_850
RX_L1
4
GND2
5
RXTX_L2
6
GND3
7
RXTX_H
8
GND4
9
RXTX_M1
10
GND5
11
RX_M2 RX_1900
12
RX_1800
RX_M3
Only for training and service purposes
TP1