Table of Contents
Advertisement
7. CIRCUIT DIAGRAM
ANT400
ANT401
NC2
20
8.2nH
NC1
19
C410
GND5
18
GND4
16
C619
GND3
13
6.8p
GND2
12
GND1
9
VC2
10
VC1
14
LMSP43NA-504TEMP
C421
33p
C423
15p
C425
56p
VBAT
TPS79928DRVR
U403
6
1
IN
OUT
5
2
NC
NR
4
3
C438
EN
GND
7
0.1u
PGND
C439
0.01u
REGEN
TPS79928DRVR
U404
6
1
IN
OUT
5
2
NC
NR
4
3
EN
GND
7
PGND
C442
0.01u
LGE Internal Use Only
C403
2.7nH
L400
GSM850_900TX
0.5p
17
C411 2.7nH
GSM1800_1900TX
15
C412
3.3nH
GSM1900RX2
8
GSM1900RX1
7
GSM1800RX2
L401
6
GSM1800RX1
0.5p
5
C414
3.3nH
GSM900RX2
4
GSM900RX1
3
GSM850RX2
2
GSM850RX1
1
C415
100p
L403
10nH
C417 100p
FL400
10p
C418
L404
12nH
10p
C422
120
100ohm
R402
R403
R404
R405
51
68
120
100ohm
R406
R407
L405
3.3nH
C429
C430
NA
1.2p
POUT_GSM
13
GND7
14
VLDO
15
VBAT
VBAT1
U402
16
C432
C433
C434
RPF09036B
10u
33nF
47n
VBAT2
17
GND5
18
POUT_XCS
19
L406
2.2nH
C436
C437
NA
0.5p
VCC_SYN
C440
2.2u
C441
NA
R409
C_VCCRF
36K
TEMP_SENSE
PT400
R410
22K
47K
22K THERMISTER
C443
2.2u
C_VCCRF
VCC_SYN
C400
0.01u
C401
0.01u
C402
3.9p
C404
3.9p
C407
C406
68p
33nF
C408
C405
22p
0.1u
A1
B9
PCSLNAI
XON
B1
C8
PCSLNAIB
GNDVCXO_OR
C2
D7
PCSDCSGND
VOUTEF2
0.1u
C1
C9
C416
DCSLNAI
VCCVCXO
D1
D8
DCSLNAIB
VOUTEF1
D2
D9
DCSG90GND
VCCLOGIC2
E1
E7
U401
0.01u
G90LNAI
GNDLOGIC
C419
F1
F7
G90LNAIB
CLOGIC1
E2
E9
R2A60167BG
G90G85GND
VCCLOGIC1
G1
E8
G85LNAI
STROBE
H1
F8
G85LNAIB
SYSCLK
F2
F9
G85GND
RXTXDATA
G2
G7
GNDLNA_TX1
RXTXEN
H2
G6
TXON
TEST1
E3
G9
GNDDMIXIN
CTRLEN
J2
G8
DMIXIN
CTRLDATA
J1
H9
DMIXINB
CTRLCLK
C426
22p
C424
0.01u
C_VCCRF
C427
0.01u
C428
1000p
PIN_GSM
7
C431
TX_ON
6
NA
VRAMP
5
GND6
4
C_VCCRF
VREG
3
C435
BAND_SELECT
2
22p
PIN_XCS
1
- 144 -
VRIO
C409
0.01u
U400
1
VCC
L402
_OE
5
2 A
3
8.2nH
4
SYSCLK
Y
GND
SN74LVC1G125DRLR
SLICER_IN
VCC_SYN
C420 0.01u
VRIO
DIGITALRF_DATA
DIGITALRF_ENABLE
DIGITALRF_RF_CS
DIGITALRF_RF_DATA
DIGITALRF_RF_CLK
SYSCLKEN
KE520
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Advertisement
Table of Contents
Troubleshooting
