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8. CIRCUIT DIAGRAM
2
7
D
D
Iss.
10
3
2012
Name
LG Electronics Inc.
C
Sheets
Section
DRAWING
V1.1
B
Notice No.
Date
8
W3000
4/4
RF Circuit
1
Designer
Sheet/
A
5
1608
A
NO.
1%
Checked
6
C
MODEL
Sign & Name
DRAWING
NAME
LG Electronics Inc.
2
B
9
Approved
E
Date
4
LGIC(42)-A-5505-10:01
3
1
5
4
27p
C409
CH HWANG
2002
07/24
470p
C442
RF2.85V
RF2.85V
L418
8.2nH
15K
R424
22p
C437
C414
33p
0.5p
C427
1p
C432
L421
2.7nH
5.6K
R407
100p
C405
GND1
3
GND2
4
5
GND3
6
GND4
IN
1
2
OUT
TP405
MM8430-2600B
CN303
510
R410
10p
680p
C413
C425
2.2u
C458
0.1u
RF2.85V
2012
C428
C422
TP408
10uF
C418
12p
0.1u
C404
C439
0.1u
0.1u
C447
C415
NC
NC
R428
100
R404
RF2.85V
C461
22p
0.1u
C438
100p
C450
82nH
L411
RF2.85V
RF2.85V
COIL
1608
C403
22p
C453
NC
10u
C416
C460
2012
VBAT
470p
R402
10
NC
R427
C426
8200p
4
GND
2
IN
NR
5
OUT
1
_ERR
3
6
_SD
RF2.85V
FILM
2012
ADP3330
U414
NC
C452
C430
10p
390
R421
NC
R431
TP401
22p
10nH
L407
C446
100
R425
RF2.85V
10p
C444
NC
R429
NC
C443
15K
R401
1M
R426
C435
COG
1608
1n
C454
100p
C436
22p
VCC2
52
VCC3
VCC4
59
36
VCCD
VCCF
37
42
VCCFNCP
60
VCCTxVCO
VCCUHF
51
48
VDDBB
9
TxDCSPCS
1
4
TxEN
TxFN
25
24
TxFP
64
TxGSM
TxIN
21
10
TxINP
20
TxIP
TxQN
23
22
TxQP
2
TxVCOTune
UHFBYP
49
UHFCPO
41
50
UHFTune
8
VCC1
26
NC2
NC3
61
34
NC4
NC5
33
16
NC6
NC7
17
PCO1
5
6
PCO2
RXEN
3
RxIN
57
58
RxIP
RxQN
55
56
RxQP
SXENA
43
TXBYPASS
7
32
T_H
TxCPO
19
38
FREF
G1
GND1
40
GNDCP
GNDD
35
GNDFN
39
12
GNDLNAGSM
44
LDMUX
LE
47
LNADCSIN
13
LNAGSMIN
11
LNAPCSIN
15
54
LON
LOP
53
LPFADJ
31
NC1
63
62
CX74017
U441
46
CLK
28
CapIN
27
CapIP
30
CapQN
CapQP
29
DATA
45
14
FEENA
18
FILTN
FILTP
12p
C419
0.1u
C412
22p
C429
C441
470p
39p
C402
220
R409
51
R412
10
R417
C451
0.5p
RF2.85V
0.1u
C434
C456
1000p
C421
R422
1K
47p
C411
0.1u
0
R403
C440
12p
10uF
C459
0
R430
2012
C406
IN
2
OUT
4
VCC
5
RF2.85V
1000p
U413
SN74AHC1GU04DCKR
GND
3
L408
10nH
L419
1.5nH
470
R415
R416
470
TP403
18
GND6
GND7
19
20
GND8
21
GND9
GSM_IN
7
9
GSM_OUT
3
TX_ENABLE
4
VBATT
VCC1
8
12
VCC2
VCC_OUT
10
VRAMP
6
VREG
5
GND17
29
30
GND18
GND19
31
GND2
14
32
GND20
33
GND21
GND22
34
35
GND23
GND24
36
GND25
37
38
GND26
39
GND27
40
GND28
15
GND3
GND4
16
GND5
17
RF3110
U416
BAND_SELECT
2
1
DCS_IN
DCS_OUT
11
GND1
13
GND10
22
GND11
23
24
GND12
25
GND13
GND14
26
27
GND15
GND16
28
10
R419
TP407
39K
R423
X401
1
CTL
2
GND
3
OUT
VCC
4
1%
13MHz
10
R420
TP409
0.5p
C408
G2
6
G3
G4
8
1
IN1
3 IN2
7
OUT1
OUT2
5
R405
100
FAR-G6CS-1G8425-L250
FL406
2
G1
4
C420
47p
C401
100p
RF2.85V
2012
VBAT
C455
2.2u
27p
C448
C423
1.8p
RF2.85V
2.2K
R413
4p
C463
1u
OUT401
TP406
C417
C410
22p
4p
C462
L420
1.8nH
2
VC2
11
3.3nH
L406
FL405
LMSP54AA-097
8
ANT
DCS_RX
1
DCS_TX
3
EGSM_RX 10
EGSM_TX
5
GND1
4
GND2
6
GND3
7
GND4
9
GND5
12
GND6
13
VC1
12
R414
1.5nH
L409
10p
C433
L405
NC
R408
220
1000p
C457
TP404
TP402
C407
27p
22
R406
150nH
L414
390
R411
1608
R418
10
TP411
47p
C431
C424
220p
DCSSEL
GSMSEL
TXRAMP
TXPA
RF2.85V
BANDSEL1
VSYNTHEN
TEMPSENSE
13MHZ
2V7_VTCXO
AFC
PLL_CLK
PLL_DATA
PLL_LE
BANDSEL1
RX_EN
RXIN
RXIP
RXQN
RXQP
PLL_PD
T_H
TX_EN
TXIN
TXIP
TXQN
TXQP
8.4 RF CIRCUIT
Содержание W3000
Страница 1: ...GSM Phone SERVICE MANUAL MODEL W3000 P N XXXXX JUNE 2002 SERVICE MANUAL MODEL W3000 ...
Страница 23: ...Test point of Rx Levels Figure 3 7 Test point of Rx Levels 3 TECHNICAL BRIEF 22 2 1 3 4 ...
Страница 24: ...Test point of TX Levels Figure 3 8 Test point of TX Levels 1 3 TECHNICAL BRIEF 23 9 5 6 7 8 10 ...
Страница 27: ...3 TECHNICAL BRIEF 26 Figure 3 11 Transmitter Receiver RF Levels ...
Страница 28: ...3 TECHNICAL BRIEF 27 Figure 3 12 Regulator Output RF2V8 Figure 3 13 VCTCXO Power Supply 2V7_VTCXO ...
Страница 29: ...3 TECHNICAL BRIEF 28 Figure 3 14 13MHz Clock Figure 3 15 Control Signal of FEM in Rx mode GSM DCS both ...
Страница 31: ...3 TECHNICAL BRIEF 30 Figure 3 18 LE Clcok Data Figure 3 19 TXEN TARAMP TXPA ...
Страница 32: ...3 TECHNICAL BRIEF 31 Figure 3 20 TX IQ Signal Figure 3 21 RX IQ Signal TXIP TXQN ...
Страница 36: ...3 TECHNICAL BRIEF 35 Figure 3 23 System interconnection of AD6522 external interfaces ...
Страница 50: ... 49 4 TROUBLE SHOOTING 4 2 Rx Trouble Now See next Page to see How to check each parts RX Check Area ...
Страница 51: ...4 TROUBLE SHOOTING 50 4 2 1 Checking Regulator Circuit U414 1 U414 6 ...
Страница 52: ...4 TROUBLE SHOOTING 51 4 2 2 Checking VCTCXO Circuit X401 4 X401 3 Graph 4 1 VCTCXO 13MHz Graph 4 2 VCTCXO 2 7V ...
Страница 53: ...4 2 3 Checking Control Signal 4 TROUBLE SHOOTING 52 ...
Страница 56: ...4 TROUBLE SHOOTING 55 4 2 5 Checking Saw Filter Circuit FL406 3 FL406 5 FL406 7 FL406 1 ...
Страница 58: ...4 TROUBLE SHOOTING 57 4 3 Tx Trouble ...
Страница 62: ... 61 4 TROUBLE SHOOTING 4 3 4 Checking TX IQ Graph 4 13 TX IQ Signal ...
Страница 63: ... 62 4 TROUBLE SHOOTING 4 3 5 Checking RF TX Level L419 L409 L408 L417 U441 U416 R414 R405 R404 R403 R401 R406 ...
Страница 66: ...4 3 7 Receiver and Transmitter RF Level 65 4 TROUBLE SHOOTING ...
Страница 67: ... 66 4 TROUBLE SHOOTING 4 3 8 Receiver RF Level Figure 4 1 Test Points of Rx Level ...
Страница 68: ... 67 4 TROUBLE SHOOTING 4 3 9 Transmitter RF Level Figure 4 2 Test Points of Tx Level ...
Страница 71: ...4 4 Power On Trouble 70 4 TROUBLE SHOOTING SETTING Connect PIF and set remote switch off at PIF ...
Страница 74: ...4 TROUBLE SHOOTING 73 Test Q102 D101 Check The charging currentwill flowintothis direction R106 Q102 D101 ...
Страница 75: ...4 TROUBLE SHOOTING 74 4 6 LCD Trouble ...
Страница 77: ...4 TROUBLE SHOOTING 76 4 7 Receiver Trouble SETTING After Initialize Agilent 8960 Test in EGSM DCS Mode ...
Страница 78: ...4 TROUBLE SHOOTING 77 The Receiver part Circuit Diagram FL301 V307 ...
Страница 80: ...4 TROUBLE SHOOTING 79 Test Speaker Check J302 U303 melody IC U203 ...
Страница 82: ...4 TROUBLE SHOOTING 81 4 9 Mic Trouble SETTING After Initialize Agilent 8960 Test in EGSM DCS Mode ...
Страница 84: ...4 TROUBLE SHOOTING 83 C114 R104 R101 L101 L102 C124 R107 R105 C120 Q101 ...
Страница 90: ...4 TROUBLE SHOOTING 89 Test SIM Connector Check ...
Страница 91: ...4 TROUBLE SHOOTING 90 4 13 Earphone Trouble SETTING After Initialize Agilent 8960 Test in EGSM DCS Mode ...
Страница 92: ...4 TROUBLE SHOOTING 91 ...
Страница 93: ...4 TROUBLE SHOOTING 92 U306 U305 U308 ...
Страница 94: ...4 TROUBLE SHOOTING 93 C145 J301 R334 R307 C170 ...
Страница 97: ...4 TROUBLE SHOOTING 96 ...
Страница 98: ...4 TROUBLE SHOOTING 97 RA201 CN302 U308 U305 RA201 CN302 U306 ...
Страница 110: ...7 BLOCK DIAGRAM Figure 7 1 block diagram 109 7 BLOCK DIAGRAM ...
Страница 111: ...NOTE 110 ...
Страница 116: ... 115 9 PCB LAYOUT 9 PCB LAYOUT ...
Страница 117: ... 116 9 PCB LAYOUT ...