Checking Front-End Module Block - LG KF700Q Service Manual

4.15 Checking Front-End Module Block

VREG_RF_2.85V VREG_RF_2.85V
[Fig. 4.16] Schematic of the Front-End Module Block
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
TP1
C129 C129
33p 33p
ANT_SEL0 ANT_SEL0
ANT_SEL1 ANT_SEL1
ANT_SEL2 ANT_SEL2
ANT_SEL3 ANT_SEL3
[Fig. 4.17] Test Point of Front-End Module Block
- 109 -
4. TROUBLE SHOOTING
FL101 FL101
D5015 D5015
18 18
PCS_RX1 PCS_RX1
19 19
PCS_RX2 PCS_RX2
2 16 16
ANT ANT PCN_RX1 PCN_RX1
17 17
PCN_RX2 PCN_RX2
1 14 14
GND1 GND1 EGSM_RX1 EGSM_RX1
8 15 15
GND2 GND2 EGSM_RX2 EGSM_RX2
10 10
GND3 GND3
23 23 12 12
GND4 GND4 GSM850_RX1 GSM850_RX1
24 24 13 13
GND5 GND5 GSM850_RX2 GSM850_RX2
20 20
WCDMA_2100 WCDMA_2100
21 21
WCDMA_850 WCDMA_850
22 22
WCDMA_1900 WCDMA_1900
9
PCN_PCS_TX PCN_PCS_TX
11 11
GSM850_EGSM_TX GSM850_EGSM_TX
TP2
TP3
TP4
TP5
LGE Internal Use Only