LG U8120 Service Manual page 236

9. CIRCUIT DIAGRAM
1 2 3
A
WCDMA_TX
B
R1630
VCCWPA
0
N1630
RF9266
GND5
12
GND6
13
GND7
14
VCC21
15
C
C1632 VCC22
16
0.01u
GND8
17
VCC11
18
VCC12
19
C1631
10p
D
B1501
V_wivi_A RTEMP
V+ VO
4 3
E
GND1
2
GND2 NC
5 1
LM20BIM7X
V_wivi_A
F
V_wivi_B
G
H
1 2 3
4 5 6
N1650
CE0401G95DCB000-TT1
R1997
VDETECT
8
0
VBATI
VCC_DET
7
C1636
GND2 NA
6
R1631
VCC_BIAS2
5
0
VCC_BIAS1
4
GND1
3
VCTRL2
2
R1632 R1617
VCTRL1 WPAREF
1
0 0
C1635
NA RFLO
RFLOBAR
V_wivi_A
L1507
C1511
C1514 C1513
0.01u 0.01u
C1508
Z1500
SX-S205B
2.2p
6
1
G1 B_IN2
R1605 L1505
2 5
S_OUT G3
3 4 10nH
0 G2 B_IN1
C1507
L1506
R1606 R1604
NA NA
NA 4p
R1502
680
L1501
15nH
R1501
0
L1502
C1501
47p
15nH
R1504
680
R1703
0
4 5 6
7 8
R1633
NA
VBATI
R1629
0
R1621 N1620
WDCDCREF
MAX1820ZEBC
0
R1623
A1 B1
_SKIP SYNC
0
A2 C1
COMP _SHDN
A3 C2
OUT BATT 3838
L1621
A4 C3
R1626 REF LX
4.7uH
33K
B4 C4
C1623
GND PGND C1624
10u
C1622 4.7u
2012
22p
C1626
330p
C1715 C1714
100p 100p
L1720
NA
C1716
4.7p
BLM15BB750SN1J
R1503 R1510
75
0 0
C1702 C1701
22p 0.01u
C1512 C1510 C1509
10p
10p 0.01u 10p
L1503 L1504
C1602 C1601
5.6nH 8.2nH
22p 0.01u
C1504
10p
J2 A1
OUT QINBAR
J3 A2
OUTBAR QIN
J4 A3
GNDRF INBAR
J5 A4
MIXOUT IN
J6 A5
MIXOUTBAR VCCBB
J7 A6
VCCIF N1700 VCCIFPHD C1503
J8 A7
IFBP PHDIFOUT 22p
LZT-108-5322
J9 A8
IFBPBAR VCCIFPLL
J10 A9
VTUNERF GNDIFVCO1
H3 A10
C1505 GNDRFLO2 VCCIFVCO
H4 C4
22p
GNDRF1 CLK
H5 C5
GNDRF2 GNDIFPHD
H6 C6
GNDRF3 GNDIFPLL C1704 C1703
H7 C7
GNDIF WON 22p 0.01u
C1502
4p
R1711 R1710
0 4.7K
C1712 C1710 C1711
NA 150p 3300p
7 8
- 237 -
9 10 11
VCCWPA
R1627
WPOWERSENSE
39K
L1601
C1627 R1628 C1628
4.7u L1602 100K 1000p
L1603
L1604
NA
L1605
NA
IFLOBAR
IFLO
R1701
V_wivi_B
10
R1603
V_wivi_A
0
TP1701 TP1702
XOOA
XOOB
TP1504
TP1503
TP1502
TP1501
TXQB
TXQA
TXIB
TXIA
R1702
10
V_wivi_B
WDAT
WCLK
WSTR
Engineer:
LG ELECTRONICS INC.
SG Kang
3G HANDSETS LAB.
Drawn by:
DEVELOPMENT GROUP 1
SG Kang
R&D CHK:
TITLE:
UMTS TX (WIVI) to ISOLATOR
DOC CTRL CHK:
MFG ENGR CHK: U8120 PT V1.3 STG INTEL PAM
Changed by: Date Changed: Time Changed: QA CHK: REV: Drawing Number:
SG Kang Tuesday, September 04, 2003 5:04:02 pm
9 10 11
12
A
B
C
D
E
F
G
H
Size:
A2
12 1 8 A
Page:
3
12