LG U8120 Service Manual page 237

9. CIRCUIT DIAGRAM
1 2 3
VBATI
A
BLM31PG601SN1
R1301
0
VDDBUF
PASENSE+
PASENSE-
PAREG
B
R1329
3K
C1322
IOUT
150p R1328
NA
VDIG
FF_IN
EXPOUT C1321
R1302 470p
C1320
0 470p
VDDPA
VSSPA C1300
0.068u
C
C1327 C1324
33p 100p
C1343 C1342 C1340
NA NA NA
R1343
C1341
10
GSM_TX
0
33p
C1352
0 15
DCS_TX
10p R1350
C1351 C1350
13
NA
NA
D R1361
NA
C1336
C1335 C1113 C1334
NA
22p 22p 22p
R1333
TXON
0 R1113
RXON
E
BSEL0
R1334
PCTL
0
MODA
MODB
R1211
MODC
100
R1210
MODD
100
L1200
VCCA
XOOB
R1272
F
NA
XOOA
R1273
NA
R1250
PULSESKIP
0
C1250
NA
G
VLOOP
H
1 2 3
4 5
L1300
C1315 C1311 C1312 C1313
10u 10u 0.01u 22p
2012 2012
R1327
0
R1326
C1326
NA 0.05
R1325
0
BLM15AB601SN1J
L1320 R1322 C1325
V1330
100p
2SD2216J
NA
NA
R1321 C1323
R1323 R1324
1K
100p NA NA
R1345
NA
N1330
LDB21897M15C
R1338 4
B2
1
UB
0 3
B1
3 L1330
EGSM_OUT DCS_PCS_IN R1339 R1337
33nH
NA NA C1332
4
DCS_PCS_OUT EGSM_IN
33p
SKY77321
1
TX_ENABLE
N1300
5 R1332
RSVD BS
0
L1332
75 N1331
LDB211G8020C
BLM15BB750SN1J
R1341 4
B2
L1333 1
UB
0
3
B1
L1331
75 R1342 R1340
22nH
C1331 NA NA
22p C1337 R1344
C1333
22p 0
10p
L1230
R1213
C1230 C1231
100
NA NA
R1212
100
K2
NC5
K3
MODA
K4
C1205 C1201 MODB
K5
22p 0.01u MODC
K6
MODD
K7 N1100
VCCPLL
C1271
K8 LZT-108-5325
XOOB
K9
1000p
XOOC
K10
NC6
L1201 H3
GNDBUF
5.6nH H4
NC3
1608
H5
PS
C1270
H6
GNDPLL
H7
1000p XOOLA STROBE
L1220
2012
100uH
C1225
R1224 R1220 R1222 R1223
560 1800p
0 120 390
C1221 C1220 C1224 C1222 C1223
0.01u NA 1200p 560p 330p
4 5
6 7 8
VDIG
R1151
0
I2CDAT
I2CCLK
SYSCLK2
RESOUT3n
RXON
R1335
VCCA
0
C1330
22p
C1114
7p
C1102 B7714 Z1100 C1100
O1 IN DCS_RX
4
2
10p O2 10p
6
G1 G2 G3
L1100 L1101
C1115
3.9nH 3.3nH
NA
C1101
10p
C1112
33p Z1110
3
B7705 2
C1110
L1110 O1 G1
1 GSM_RX
IN
18nH
O2 G2 33p
4 5
C1111
L1111
10nH
33p
R1121
L1120
NA
VCCA
A1
RFHD
A2
RFHC C1104 C1103
A3
GNDRF 0.01u 22p
A4
RFLB
A5
RFLA
A6
VCCRF
R1103
A7
QRB
A8 0 R1104
QRA
A9 0 R1105
IRB
A10 0 R1106
IRA
C4 0
REON
C5
CLK
C6
DATA
C7
R1240
0
C1240
NA
TP1201
TP1202
TP1203
L1202
C1203 C1202
22p 0.01u
6 7 8
- 238 -
9 10 11
C1156 TP1141 TP1142 TP1143
0.01u
F1
AVDD
D3
I2CDAT
D1 D5
I2CCLK QDAT QDATA
TP1151 G8 A4
MCLK IDAT IDATA
TP1152 D2 C5
DCLK
RESETB DCLK
A8
IRA
A7
IRB
A6 H4
QRA AUXO2 VDIG
A5 G5
QRB BEARP
B4 H5
RXSTR BEARN R1150
G7
PCMUL 0
E4 E6
AUXI1 GPDAT
F2 E5
CCO GPCLK VDIG_HERTA
F3
MICIP
G1 C3
MICIN DAC01 C1150 C1151 C1153 C1155
B8 B3
GPA0 DAC02 0.01u NA NA NA
B6 A3
GPA1 DAC03
C6
GPA2
N1101
C7
GPA3
LZT-108-5321
C8 C2
GPA4 DACCLK
D6 C1
GPA5 DACDAT
D8 D4
GPA6 DACSTR
D7
GPA7
E2
DEC1
H7 H2
PCMDL DEC2
F6 H3
PCMCLK DEC3 C1144
G6 B2
PCMSYN DEC4 C1142 0.068u
E7 E1
ADSTR DEC5 C1141 0.068u
C1140 0.068u
E3
REXT C1143 0.068u
0.068u
A1 A2
R1140 VSS1 VDD1
100K B1 B5
VSS2 VDD2
C4 B7
VSS3 VDD3
E8 F5
VSS4 VDD4
F4 F8
VSS5 VDD5
F7 H6
VSS6 VDD6 VDIG_HERTA
G3
VSS7
G4 G2
VSS8 NC1
H8 H1
VSS9 NC2
GPRFCTRL
RADCLK
RADDAT
RADSTR
VCCA
Engineer:
LG ELECTRONICS INC.
JS Joo
3G HANDSETS LAB.
Drawn by:
JS Joo DEVELOPMENT GROUP 1
R&D CHK: TITLE:
GSM/DCS (INGELA)
DOC CTRL CHK:
U8120 PT V1.3 STG INTEL PAM
MFG ENGR CHK:
Changed by: Date Changed: Time Changed: QA CHK: REV: Drawing Number:
JS Joo Tuesday, September 04, 2003 7:25:06 pm
9 10 11
12
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C
D
E
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Size:
A2
12 1 8 A
Page:
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