LG KP260 Service Manual page 96

7. CIRCUIT DIAGRAM
1 2
ANT500 ANT501
A
C504 1.5p
R504 DNI
B
SW500
RF500
ENWY0004501
C518
22p
C
2V75_VVCXO
GND8 GSM850_900_TX
22
GND7 GSM1800_1900_TX
18
GND6
16
GND5
14
GND4
13
GND3
12
GND2
10
GND1
9
VDD
21
C532 C533 VC2
20
22p 0.1u VC1
19
LMSP43QA-538
FL500
D
C544
22p
ANT_SW1 ANT_SW2
GSM850_EGSM TX H H
DCS_PCS TX L H
GSM850 RX L
H
EGSM900 RX H L
E
DCS1800 RX L L
PCS1900 RX L L
1 2
LGIC(42)-A-5505-10:01
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3 4 5
VBAT
C501 C502 C503
47p 0.01u 22u
SMPY0014001
L500
15
DCS_PCS_OUT
2.4nH
C510 C511
11
U501
EGSM_OUT
0.5p
DNI
SKY77318
19
RSVD_GND
21
P_GND
L501
C515 100p C516
DNI DNI
17
15
PCS1900
C525
GSM1900_RX2
8
5p
GSM1900_RX1
7
GSM1800_RX2 C527
6
GSM1800_RX1
5
5p
GSM900_RX2 DCS1800 C528
4
GSM900_RX1
3
5p
GSM850_RX2
2
GSM850_RX1 C534
1
5p
GSM900
C536
SFAY0008602
5.6p
C537
5.6p
ANT_SW1 GSM850
C541
ANT_SW2 2.2p
C543
2.2p
C545
22p
3 4 5
6 7 8
C505
39p
C508 C509
0.01u 0.01u
R506 C512 22p
3
DCS_PCS_IN
24
4
EGSM_IN
18
ENABLE
1
BS
C517 33p
R510
30
QP
C519
82p
QN
C521
0.1u
0.15MM
EUSY0280101
25
RX1900B
26 16
RX1900 VLDO2
27 15
RX1800B VLDO1
28 14
RX1800 VBAT
U502
29 13
RX900B VDD
AD6548
30 12
RX900 VCC_TXVCO
31 11
RX850B TXOP_HI
32 10
RX850 TXOP_LO
9
VLDO3
33
GND
IP
C542
82p
IN
X500
DSX321G-26M
4
1
Section Date Sign & Name
Designer
Checked
Approved
LG Electronics Inc.
6 7
- 97 -
9 10
R500 47
PA_BAND
R501 47
PA_EN
R502
TX_RAMP
1K
C506 C507
27p 27p
2V75_VVCXO
U500
C513
Not Mount
1000p 5
VCC
2 4
26M_BT
GND
3
R509 C514
2.2u
0
26M_DBB
MC74VHC1G04DFT2G
R511
AFC
10K
C520
0.1u
2V8_VMEM VBAT 2V75_VVCXO
C522
C523 C524 0.1u
27p 39p
C526 220n
C529 C530
0.1u 0.1u
C531
0.1u
C535
1u
S_DATA
S_EN
S_CLK
C538 C539 C540
100p 100p 100p
26MHz
3
2
EXXY0025201
Sheet/Sheets
MODEL KP260 / KP265
5/5
DRAWING
RF
NAME
DRAWING
VER 1.0
NO.
LG Electronics Inc.
LGMC
LGE Internal Use Only
A
A
C
D