LG KE590 Service Manual page 119

7. CIRCUIT DIAGRAM
1 2
A
B
R405
3.3nH
SW401 KMS-507 C415
ANT401 ANT402
G2
ANT RF
G1
33p
C417
C416
6.8nH
1p
C
D
VBAT
LDO Supplies
TPS79928DRVR U405
C433
6
0.1u IN OUT
5
NC NR
4
EN GND
PGND
REGEN
E
TPS79928DRVR U406
6
IN OUT
5
NC NR
4
EN GND
PGND
1 2
LGE Internal Use Only
3 4 5
GND13 EGSMGSM850TX
26 10
GND12 DCSPCSTX
25 5
GND11
24
GND10
23
GND9
22
GND8 PCSRX2
21 19
GND7 FL401 PCSRX1
20 18
GND6 HWXR693
9
GND5 SFAY00009801 DCSRX2
8 17
GND4 DCSRX1
7 16
GND3
6
GND2 EGSMRX2
4 15
GND1 EGSMRX1
2 14
VC_EGSMGSM850TX GSM850RX2
11 13
VC_DCSPCSTX GSM850RX1
3 12
C418
56p
120
R407
R410
8dB ATT
51
C420
15p 120
R412
R415 3.3nH
C424 C425
1p
NA
POUT_GSM
13
GND7
14
VLDO
15
VBAT
VBAT1
16
C427 C428 C429 C440
10u
0.1u 47n 1u VBAT2
17
GND5
18
POUT_XCS
19
R416 1nH
C431 C432
0.5p NA
VCC_SYN
1
2
3
7
C434 C435
0.01u 2.2u
C_VCCRF
1
2
3
7
C436 C437
0.01u 2.2u
3 4 5
6 7
C_VCCRF VCC_SYN
C403
0.01u
C404
0.01u
C407
3.9p
C405
3.9p C406
33nF
C409
C410 C408
22p 0.1u
68p
A1
PCSLNAI XON
B1
PCSLNAIB GNDVCXO_OR
C2
PCSDCSGND VOUTEF2
C1
DCSLNAI VCCVCXO
D1
DCSLNAIB VOUTEF1
D2
DCSG90GND VCCLOGIC2
E1
U403
G90LNAI GNDLOGIC
F1
G90LNAIB CLOGIC1
E2
R2A60167BG
G90G85GND VCCLOGIC1
G1
G85LNAI STROBE
H1 EUSY0316801
G85LNAIB SYSCLK
F2
G85GND RXTXDATA
G2
GNDLNA_TX1 RXTXEN
H2
TXON TEST1
E3
GNDDMIXIN CTRLEN
J2
DMIXIN CTRLDATA
J1
DMIXINB CTRLCLK
120
R408
R411
8dB ATT (NC) (NC) (NC)
C421
51
22p
120
C419 0.01u
R413
C422
0.01u
C423
1000p
(NC)
C_VCCRF
PIN_GSM
7
C426
TX_ON
6 NA
VRAMP
5
GND6
U404
4
VREG
RPF09036B
3
SMPY0014901
C430
BAND_SELECT
2
22p
PIN_XCS
1
- 120 -
8 9 10
VRIO
C401
0.01u
SN74AHC1GU04DCKR
C402
U401
5
1000p
R401
2 VCC 4
BT_CLK
IN OUT
GND
200
3
R402
1M
VRIO
0.01u
C411
U402
1 VCC
R404
_OE
5
2
A
3 4
8.2nH
Y SYSCLK
GND
SN74LVC1G125DRLR
B9
C8
D7
C412 0.1u
C9
D8
Slicer_IN
D9
VCC_SYN
E7
C413 0.01u C414 0.01u
F7
E9
VRIO
E8
F8
F9
DIGITALRF_DATA (DBB)
G7
DIGITALRF_ENABLE (DBB)
G6
G9
DIGITALRF_RF_CS (DBB)
G8
DIGITALRF_RF_DATA (DBB)
H9
DIGITALRF_RF_CLK (DBB)
R409 0
SYSCLKEN (ABB)
C_VCCRF
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
A
B
C
D