LG KP175 Service Manual page 42

(2) Checking Mobile SW & FEM
TEST POINT
ASM+PAM
CIRCUIT
6
DCS_RX
7
GSM_RX
U501
8
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Only for training and service purposes
C503
C502
C500
C500 C501 C502 C503
56p 68p 56p 56p
VBAT
C508 C510
10u 0.01u
1
VBATT
20
GND9
19
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4. TROUBLE SHOOTING
PA_BAND
PA_EN
R503
TX_RAMP
68
ANT_SW
WAVEFORM
EGSM RX
Graph 4.2.2 ASM Control Signal
LGE Internal Use Only
BS
Tx_EN
V_LOGIC