Only For Training And Service Purposes - LG KP270 Service Manual

3. TECHNICAL BRIEF
ANT_SEL2
ANT_SEL6
ANT_SEL1
ANT_SEL4
[Figure 3.17.5-1] KP270 Front End Control (FEM input)
LGE Internal Use Only
2V85_VRF
FB503
C540
1000p
R516
R517
R518
R519
2V85_VRF
U505
NL27WZ32USG
C553
1 8
1u
A1 VCC
2 7
B1 Y1
3 6
Y2 B2 ANT_SEL3
4 5
GND A2 ANT_SEL5
FL501 LMSP43QL-771
GSM850_900TX
GSM1800_1900TX
2
ANT GSM850_RX1
GSM850_RX2
GSM900_RX1
GSM900_RX2
GSM1800_RX1
GSM1800_RX2
GSM1900_RX1
1
GND1 GSM1900_RX2
8
GND3
10
GND2
23
C541
GND4
24
0.1u
GND5
1K
1K
1K
1K
Copyright © 2008 LG Electronics. Inc. All right reserved.
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11
GSM_PAOUT_LB
9
GSM_PAOUT_HB
12
13
14
15
16
17
18
19
20
UMTS1 3G_RF_BC5_8
21
UMTS2
22
UMTS3 3G_RF_BC1

Only for training and service purposes