LG Prada KE850 Service Manual page 121

7. CIRCUIT DIAGRAM
1 2
RF
A
TP401 TP402
L401 3.3nH
R410 0
C402 C403
B NA 0.75p
C
NA
C410
C411 NA
L402 6.8nH R411 0
C422 NA
C421 2.2p
D
GND25 GND15
27 26
GND24 GND14
28 25
GND23 GND13
29 24
GND22 GND12
30 23
GND21 GND11
31 22
GND20 GND10
32 21
GND19 GND9
33 20
E GND18 GND8
34 19
GND17 U403 GND7
35 18
GND16 GND6
36 SKY77340 17
GSM_OUT EN
9 8
GND5 GSM_IN
10 7
GND4 VRAMP
11 6
RSVD2 VBATT
12 5
C453 GND3 RSVD1
13 4
NA GND2 BS
14 3
GND1 DCS_PCS_IN
15 2
DCS_PCS_OUT MODE
16 1
Power Amp Module
VSUPPLY
C461
F 27p
R439
RF_TEMP
22K
R440
10K
G
H
1 2
3 4 5
C401 33p
G2
ANT RF
G1
SW401
KMS-506
Front End Module
18
GMS_RX-
GSM850
19
GSM_RX+
16
EGSM_RX-
EGSM 17
EGSM_RX+
14
DCS_RX-
DCS 15
DCS_RX+
12
PCS_RX-
PCS 13
PCS_RX+
LB RF Input 6
TX1G
8
TX2G
HB RF Input
C412 C413 C414 C415 C416 C417 C418 C419
NA NA 2.2p 2.2p 1.2p
1.5p 1.5p 1.2p
L404 L405 L406 L407
18nH 5.6nH
NA 5.6nH
VRF2V85 VRF1V5
C424
4700p C425
VRF1V5 VRF2V85
0.1u
FE2
33
VBIAS
34
VDDTX1V5 VDDRX2V8
35 20
TX1 VDDRX1V5
U404
36 19
TX2 VCO_RC
PMB6272
37 18
VDDTX2V8 VDDVCO2V8 R414
38 17
C432 VDDMIX2V8 RF Transceiver EN
39 16
R415 10
4.7u GND3 VDDXO2V8
40 15
C434 C435 FSYS1
14
2.2u 2.2u GND4 GND1
41 13
VRF2V7
R418
0
R419
C443 0
C444
NA
100p R421 0
VRF2V85 1V5_Core
R425 0
C448 C449 R426
NA NA
10
100p
R427
C452
0
C454 C455
NA NA
C458
R431
NA
R432
C460
R433
68u
C462
NA
R434
3 4 5
6 7 8
VRF2V85
R403
0
C405
0.1u
U401
YGHF-S006A
3
VDD
22
VCTRL1
21
VCTRL2
20
VCTRL3
2
GND1
4
GND2
5
GND3
7
GND4
9
GND5
10
GND6
VRF2V85 VRF2V7
R412
0
C426 C423 C427
0.1u NA 0.1u
820
R416
EN
NA 0
26M_BB C431
C433 470p
R417 1.8K
AFC
26MHz
VCC GND 10p
4 2
C442 C440
0.1u OUT VCONT
3 1
X401
R422 0
CLK
DA
R424 0
C445
NA
C446
NA
C456
47n
FSYS2
QX
C459
0
NA
Q
0
IX
0
C463
NA I
0
VC4
R435 100
VC3
R436 100
VC2
R437 100
VC1
R438 0
C464 C465 C466
C467
100p 100p 100p NA
PALEVEL
R441 1.2K
MODE
R442 0
TXON_PA
R443 0
820p NA NA
C468 C469 C470
6 7 8
- 122 -
9 10 11
Bluetooth
2V72_IO
C404
0.1u
R404
0
R405
R407 0
USIF_TXD
0
R409
USIF_RXD
0
NA NA
C406 C407
B6 C9
TDO SCL0_P0_13
VRF2V65 1V5_Core 1V8_SD A7 C8
TDI PCMFR2_SDA0_P0_12
TP410
B4 F8
C420 TMS SLEEPX_P0_15
B7 C2
0.1u
TCK CLK32_P1_5
A6
TRST_
B9 B1
RTCK WAKEUP_HOST_P1_8
A5 B2
JTAG_ WAKEUP_BT_P1_7
D1 TP411
RESET_
F1 H5
VDDSUP U402 RFOUT
D2
VDDCREG PMB8753
A8 A4
VDD_1 PAON
B3 A3
VDD_2 PSEL0
F9 B8
VDDC1 PSEL1
B5
VDDC2
G2 A2
VDDPMREG TX_CONF_RXON
H4
VDDRF
E1 F2
VDDRFREG1 VSSVCO
E2 F4
C428 C429 C430 VDDRFREG2 VSSRF1
H1 E5
0.1u 0.1u 0.1u VDDPLL VSSRF2
J6 F5
VCOCAP1 VSSRF3
H6 E4
VCOCAP2 VSSRF4
C436 C437 C438 C439
1.5p 0.1u 1000p 0.01u
FSYS2
L408 L409
C441 1000p
1.8nH 1.8nH
C447
2p
ANT401 FL401 DBF71B601
C450
1 4
UB B2
FEED
NC GND 100p
2 3
DC B1
10OL21C7AJ00001
NA
C451 C457
100p
Engineer :
LG Electronics
Drawn by :
TITLE:
R&D CHK :
V1_Main
DOC CTRL CHK :
RF, BLUETOOTH
PAM(Skyworks)
MFG ENGR CHK :
Changed by: Date Changed: Time Changed: QA CHK: V 1.0
Ver.
mentor 2005-06-01 3:07:35 pm
9 10 11
LGMC
12
A
B
I2S1_CLK
I2S1_WA0
I2S1_RX
I2S1_TX
C
NA NA
C408 C409
BT_VCXO_EN
CLK32K
BT_RST
D
E
F
G
H
Size:
A3
12 1 8 A
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