Checking Front-End Module Block - LG KF700 Service Manual

4.15 Checking Front-End Module Block

SW100
G1
G2
G3 ANT
20369-001E
VREG_RF_SMPS
ANT_SEL0
ANT_SEL1
ANT_SEL2
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Only for training and service purposes
SW101
KMS-507
G2
ANT RF
G1
TP4 TP1 TP2 TP3
C110 C111 C114
C113
0.1u
10n
10n
10n
[Fig. 4.13] Schematic of the Front-End Module Block
[Fig. 4.14] Test Point of Front-End Module Block
4. TROUBLE SHOOTING
C100
1
ANT
100p
2
GND1
3
GND2
8
GND3
10
GND4
20
GND5
22
GND6
23
GND7
24
GND8
GSM850_EGSM_TX
- 109 -
FL100
DGM112M02
12
PCN_RX1
13
PCN_RX2
14
PCS_RX1
15
PCS_RX2
16
EGSM_RX1
17
EGSM_RX2
18
GSM850_RX1
19
GSM850_RX2
21
WCDMA_2100
9
PCN_PCS_TX
11
LGE Internal Use Only