LG KF510C Service Manual page 125

8. CIRCUIT DIAGRAM
1 2 3
A
CN410
1
ANT400
B
GND400
100p C403
C475 22p
G2
ANT RF
G1
SW400
RF-650
L412
27nH
10nH
C405
C
2V85_VRF 2V85_VRF
1V5_VRF
C414
2.5p
C422 C423
0.1u 4.7n
D
VBIAS
LBAND_PAM_IN
HBAND_PAM_IN
R407
C438 C439
10
0.1u 0.1u
E
1V5_VRF
2V85_VRF
R413
10
C450 C451
220n 0.1u
F
G
H
1 2 3
LGE Internal Use Only
4 5 6
VC1 (FE1) VC2 (FE2) 2V85_VRF
GSM850 / 900_TX H L
GSM 1800 / 1900_ TX L H
GSM850 / 900_RX L L
C400
GSM 1800 / 1900_ RX L L
1000p
R400
Y2 A2 FE1
100ohm
VCC GND
R401
100ohm
Y1 A1 FE2
C401 C402
100p 100p
NC7WV16P6X U400
GND25 GND15
27
GND24 GND14
28
GND23 GND13
29
GND22 GND12
30
GND21 GND11
31
GND20 GND10
C406 32
GND19
0
33
GND18
34
GND17
U401
35
GND16 SKY77340
36
C407 C408
DNI DNI GSM_OUT
9
GND5 GSM_IN
10
GND4 VRAMP
11
RSVD2 VBATT
GSM850 GSM900 DCS1800 PCS1900 12
GND3 RSVD1
13
C480 GND2
22p 14
GND1 DCS_PCS_IN
15
C415 C416 DCS_PCS_OUT MODE
C417 C418 C419 C420 C421 16
2.5p
2.2p 2.2p 2.2p 2.2p 1.5p 1.5p C409 C410
DNI 0.5p
L405
L404
L403 L406
22nH 18nH 5.1nH 5.1nH
2V85_VRF 2V85_VRF
1V5_VRF
C430 C431 C432
0.1u 0.1u 0.1u
C433
0.1u
FE2
33
VBIAS
34
VDDTX1V5 VDDRX2V8
35 20
C434
TX1 VDDRX1V5
U402
36 19 R406 47n
TX2 VCO_RC
PMB6272
37 18 820
VDDTX2V8 VDDVCO2V8
38 17
VDDMIX2V8 EN RF_EN
39 16
GND3 VDDXO2V8 C437
40 15
FSYS1 26MHZ_MCLK
14
1000 pF
GND4 GND1
41 13 2V85_VRF
R410
10
C441
X400
1000p
3 1
OUT VCONT
4 2
VCC GND
C452 C453
26MHz
0.1u 1u
BT_CLK
RF_CLK
RF_DA
QX
Q
IX
I
4 5 6
7 8
[Rev.D] Change 5.6nH to 5.1nH (L406)
[Rev.D] Change 1.2pF to 1.5pF (C420, C421)
R402 22K
RF_TEMP
R403 10K
26
25
24
23
22
21 VSUPPLY
GND9
20
GND8
19
GND7
18
GND6
17
EN TXON_PA
8
LBAND_PAM_IN
7
PA_LEVEL
6 R404 1.2K
1 R405
5
VBIAS
4
BS PA_BAND
3
HBAND_PAM_IN
2
PA_MODE
1
C424 C425 C411 C426 C427 C428 C412 C429 C413
68u
0.1u 1u 27p 100p 100p 100p 820p 100p
BLUETOOTH_CSR
R412
10K
BT400 BT401
AFC
L408
C442
0.01u 100p
L407
C454
NA
DNI
C455 C456
15p 15p
FM_SND_R
FM_SND_L
C481
C460 1000 pF
CLK32K
C462 1000p
BT_CLK
L409 47
C463 820p
FM_ANT
C466
LFB212G45BA1A220 ICVS0518150FR
FL401
UB B1
3 5
NC_DC G2
2 6
NC B2
1
7
1V5_BT_LDO
C468
15p
BT_VCXO_EN
BT_RESETn
7 8
- 126 -
9 10 11
2V62_VIO
1V5_BT_LDO
C490
0.01u
C446
C444 C445
15p 0.1u 2.2u
47n C457
AU_REF I2C_DATA
A3 C8
SPKR_R I2C_CLK
A4 C7
SPKR_L
A5
USB_DN
220n R416 560
K6
FILT_EXT USB_DP
B3 J7
CLK_32K UART_CTS
C461 0.1u C9 H6
LO_REF UART_RTS
K3 H5
XTAL_OUT UART_RX
J2 K7 TP402
XTAL_IN UART_TX
K2 J8 TP403
L410
270nH
FM_P BLUECORE5-FM PCM2_CLK
B1 D9
FM_N M400 PCM2_SYNC
C465 820p A1 D10
PCM2_IN
E10
AUX_DAC PCM2_OUT
B5 D8
RX_N
D1
RX_P PCM_CLK
E1 H9 TP404
RF_P PCM_SYNC
NA
F1 J10 TP405
RF_N PCM_IN
C467
G1 K8 TP406
PCM_OUT
H7 TP407
2V65_VBT
TP408 C440
0.01u
FB401
C470 C471
2.2u 2.2u
C469
C472
0.1u
100p
2V62_VIO
9 10 11
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
12
A
B
C
D
E
F
UART_BT_RTS
UART_BT_CTS
UART_BT_TX
UART_BT_RX
I2S1_CLK
I2S1_WA0
I2S1_TX
I2S1_RX
G
H
12