background image

INPUT_A/B & HMD

OUTPUT STAGE

MEMORY INTERFACE & OSD

POWER SECTION

PHDCLK

PDE

ZXO

PHSYNC

PVSYNC

PRA6

PRA7

PRA3

PRA5
PRA4

PRA1

PRA2

PRA0

PGA1

PGA2

PGA6

PGA0

PGA3

PGA5
PGA4

PGA7

PBA0

PBA3
PBA2

PBA5

PBA6

PBA7

PBA1

PBA4

ZXI

TTfc-INTn

AIG7
AIG6
AIG5
AIG4

AIG0

AIG1

AIG3
AIG2

BIB3

BIB4

BIG4

BIG5

BIB1

BIB5

BIB7

BIG2

BIB2

BIB6

BIG0

BIG1

BIG3

BIB0

BIR0

BIR1

BIR6

BIR7

BIR5

BIR3
BIR2

BIR4

BIG6

BIG7

MD75

MD74

MD73

MD71

MCLK

MCASn
MRASn

MWEn

MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA8
MA9
MA10

MA12

MA11

MCASn

MCLK

MWEn

MRASn

MA0
MA1
MA2
MA3

MA5

MA7

MA4

MA6

MA10

MA9

MA8

MA11
MA12

MD0
MD1
MD2
MD3
MD4
MD5
MD6
MD7
MD8
MD9

MD11

MD10

MD12
MD13
MD14
MD15

MD17

MD16

MD18
MD19
MD20
MD21

MD23

MD22

MD26

MD29

MD24
MD25

MD27
MD28

MD30
MD31

MD32
MD33
MD34
MD35

MD37

MD36

MD42

MD40

MD38

MD43

MD39

MD41

MD47
MD48

MD46

MD45

MD44

MD49

MD52

MD55

MD50
MD51

MD53
MD54

MD57

MD56

MD60

MD58

MD61

MD59

MD63

MD62

PWM7

PD32

NF4

MA7

MA5

MA9

MA6

MA12

MA8

MA0
MA1
MA2
MA3
MA4

MA10
MA11

MRASn
MCASn
MWEn
MCLK

MD65
MD66
MD67
MD68
MD69
MD70
MD72

MD64
MD76

MD39

MD47

MD45

MD40

MD48

MD41

MD46

MD49

MD43
MD42

MD44

MD38
MD37
MD36

MD62

MD56

MD50

MD60

MD61

MD58

MD52

MD57

MD51

MD63

MD54
MD53

MD59

MD55

MD20

MD14

MD18

MD19

MD16

MD10

MD15

MD21

MD12
MD11

MD17

MD13

MD29

MD24

MD34

MD22

MD31

MD23

MD32

MD27

MD25

MD30

MD33

MD26

MD35

MD28

MD1

MD5

MD8

MD3
MD2

MD9

MD7
MD6

MD0

MD4

MD77
MD78
MD79
MD80
MD81
MD82
MD83
MD84
MD85
MD86
MD87
MD88
MD89

MD91

MD90

MD95

MD92

MD94

MD93

HD_COAST

JP7
JP6
JP5
JP4

JP2

JP3

JP0

JP1

MA13

AIB3

AIB5

AIB6

AIB0

AIB1

AIB2

RGHSA

COASTA

RGHSA

COASTA

AIB4

AIB7

AIR7
AIR6
AIR5
AIR4

AIR0

AIR1

AIR3
AIR2

NE5

PD22

ND7

MOTION

MD67

MD79

MWEn

MA2

MA5

MA8

MD87

MD83

MD64
MD65

MD68

MD90

MD74

MD76

MCLK

MD70

MD85

MA11

MCASn

MA3

MA9

MD69

MD81

MA4

MA10

MD89

MD88

MA0

MD73

MD93

MD82

MD77

MD71

MD66

MD86

MD92

MD72

MRASn

MD80

MD94

MA6

MD84

MD91

MD75

MD95

MA12

MA1

MA7

MD78

MDQM

SDA

3,4,5,6,7,11

PDE 9
PVSYNC 9
PHSYNC 9

PHDPDP

11

PRA[0..7]

9

PGA[0..7] 9

PBA[0..7] 9

PHDPWM0

1

SCL

3,4,5,6,7,11

TTfc-RSTn

11

TTfc-INTn 11

AIG[0..7]

2,6

BIR[0..7]

3

BIB[0..7]

3,7,11

BIG[0..7]

3,7,11

PCLK 9

HDTV_HS

3

HDTV_CLK

3

HDTV_CS 3

HD_RGHS 3

HD_COAST 3

GHSYNC 3

GVSYNC 3

1VD_CLK

6

JPHS

11

JPHREF

11

JPCLK

11

JP[0..7]

11

DVI_DE

2

DVI_CLK

2

DVI_HS 2

DVI_VS 2

AIB[0..7]

2,6

AIR[0..7]

2

2VD_CLK

7

JPCK

11

2VD_CLK

7

+3V3

VDDAM

+2V5

+2V5

+2V5

+2V5

VDDAM

+3V3D

+3V3D

+3V3D

+3V3D

+3V3D

+3V3

+3V3D

+3V3D

+3V3

+2V5

+3V3D

+3V3

VCCV

VDDAP

VDDAP

+3V3D

+3V3D

+3V3D

+3V3D

+3V3D

+3V3D

PD42
TP9

R368

100R

PD42
TP5

X105

14.318MHz

C409
33p

R376
1M

R366

NC

R381

0R

C408
33p

C430
100n

C425
100n

C420
100n

C428
100n

C416

100n

R369

100R

PD32

TP3

PD22
TP4

C415
100n

C412
100n

C422
100n

C419
100n

C429
100n

C421
100n

C427
100n

C423
100n

C426
100n

C414
100n

C417
100n

C413
100n

C424
100n

C434

100uF/16V

C432

100uF/16V

I125

SDRAM2MX32-TSOP86

1
15

16
71

19

18

17

20

68

67

2
4
5
7
8
10
11
13
74
76
77
79
80
82
83
85

25
26
27
60
61
62
63
64
65
66
24

6

52
46
38
32
12

31
33
34
36
37
39
40
42
45
47
48
50
51
53
54
56

28
59

22
23

29
43

3
9
35
41
49
55
75
81

78

84

86

72

58

44

VDD
VDD

DQM0
DQM1

/RAS

/CAS

/WE

/CS

CLK

CKE

D0
D1
D2
D3
D4
D5
D6
D7
D8
D9

D10
D11
D12
D13
D14
D15

A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10

VSSQ

VSSQ
VSSQ
VSSQ
VSSQ
VSSQ

D16
D17
D18
D19
D20
D21
D22
D23
D24
D25
D26
D27
D28
D29
D30
D31

DQM2
DQM3

BA0
BA1

VDD
VDD

VDDQ
VDDQ
VDDQ
VDDQ
VDDQ
VDDQ
VDDQ
VDDQ

VSSQ

VSSQ

VSS

VSS

VSS

VSS

I126

SDRAM2MX32-TSOP86

1
15

16
71

19

18

17

20

68

67

2
4
5
7
8
10
11
13
74
76
77
79
80
82
83
85

25
26
27
60
61
62
63
64
65
66
24

6

52
46
38
32
12

31
33
34
36
37
39
40
42
45
47
48
50
51
53
54
56

28
59

22
23

29
43

3
9
35
41
49
55
75
81

78

84

86

72

58

44

VDD
VDD

DQM0
DQM1

/RAS

/CAS

/WE

/CS

CLK

CKE

D0
D1
D2
D3
D4
D5
D6
D7
D8
D9

D10
D11
D12
D13
D14
D15

A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10

VSSQ

VSSQ
VSSQ
VSSQ
VSSQ
VSSQ

D16
D17
D18
D19
D20
D21
D22
D23
D24
D25
D26
D27
D28
D29
D30
D31

DQM2
DQM3

BA0
BA1

VDD
VDD

VDDQ
VDDQ
VDDQ
VDDQ
VDDQ
VDDQ
VDDQ
VDDQ

VSSQ

VSSQ

VSS

VSS

VSS

VSS

R382

47R

L168

BEAD/200R

L169

BEAD/200R

C433
100n

C411
100n

C418

100n

C451
100n

C449
100n

C453
100n

C459
100n

C457
100n

L167
BEAD/200R

C435
100n

L166
BEAD/200R

C462
100n

C456
100n

C452
100n

C450
100n

C454
100n

C410
NC

C473
100n

C472

100uF/16V

C460
100n

C470
100n

C463
100n

C461
100n

C465
100n

C455
100n

C448
100n

C458
100n

C471
100n

C464
100n

R386
0R

C467
100n

R383

47R

I127
LM1084/2V5/T0263

3

2

1

VI

VO

ADJ

R385

NC

C468
100n

C469
100n

C447
470uF/16V

C466
100n

TP
TP6

R367

4K7

EXTPCLK
TP8

R374

0R

I124

SDRAM2MX32-TSOP86

1
15

16
71

19

18

17

20

68

67

2
4
5
7
8
10
11
13
74
76
77
79
80
82
83
85

25
26
27
60
61
62
63
64
65
66
24

6

52
46
38
32
12

31
33
34
36
37
39
40
42
45
47
48
50
51
53
54
56

28
59

22
23

29
43

3
9
35
41
49
55
75
81

78

84

86

72

58

44

VDD
VDD

DQM0
DQM1

/RAS

/CAS

/WE

/CS

CLK

CKE

D0
D1
D2
D3
D4
D5
D6
D7
D8
D9

D10
D11
D12
D13
D14
D15

A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10

VSSQ

VSSQ
VSSQ
VSSQ
VSSQ
VSSQ

D16
D17
D18
D19
D20
D21
D22
D23
D24
D25
D26
D27
D28
D29
D30
D31

DQM2
DQM3

BA0
BA1

VDD
VDD

VDDQ
VDDQ
VDDQ
VDDQ
VDDQ
VDDQ
VDDQ
VDDQ

VSSQ

VSSQ

VSS

VSS

VSS

VSS

C446
100n

C445
100n

C444
100n

R370

NC

INPUT A PORT

INPUT B PORT

HMD A

HMD B

HMD

Interrupt

INPUT CONTROL

INPUT

OVERLAY

PORT

V/Pr port

Y/Py port

U/Pb port

U/Pb port

Y/Py port

V/Pr port

A

B

C

I123A
t0932

Y5

W5

V5
U5
Y4

W4

V4
Y3

V10

Y9

W9

V9
U9
Y8

W8

V8

Y15
U14
V14

W14

Y14
V13

W13

Y13

W3

U4
U3

Y2

V17

W17

U17

U8

Y7

W7

V7
U7
Y6

W6

V6

V12

W12

Y12
V11

W11

Y11
Y10

W10

Y17
U16
V16

W16

Y16
U15
V15

W15

Y19

T16
U18

Y20
W18

R16
P16
V18

W19
Y18

K3

U1

T5

U2

V20

V19

U19

W20

IARED7
IARED6
IARED5
IARED4
IARED3
IARED2
IARED1
IARED0

IAGRN7
IAGRN6
IAGRN5
IAGRN4
IAGRN3
IAGRN2
IAGRN1
IAGRN0

IABLU7
IABLU6
IABLU5
IABLU4
IABLU3
IABLU2
IABLU1
IABLU0

IACLK/LLC
IADE
IAVS
IAHS

IBCLK/LLC
IBVS
IBHS

IBRED7
IBRED6
IBRED5
IBRED4
IBRED3
IBRED2
IBRED1
IBRED0

IBGRN7
IBGRN6
IBGRN5
IBGRN4
IBGRN3
IBGRN2
IBGRN1
IBGRN0

IBBLU7
IBBLU6
IBBLU5
IBBLU4
IBBLU3
IBBLU2
IBBLU1
IBBLU0

CSYNCA

VGAVSA
VGAHSA

COASTA

RGHSA

VGAVSB
VGAHSB
CSYNCB

COASTB

RGHSB

IRQn

ICCLK/LLC

ICHS

ICVS

IOVR/MDQ74

IOVG/MDQ73

IOVB/MDQ71

IOVFB/MDQ75

PANEL INTERFACE

CONTROL

STATUS/PWM

CLOCK

GENERATOR

V/Pr port

Y/Py port

U/Pv port

U/Pv port

Y/Py port

V/Pr port

I123C
t0932

G19
G20
H18
H19
H20
J18
J19
J20

K18
K19
K20
L20
L19
L18
M20
M19

M18
N20
N19
N18
P20
P19
P18
R20

B15
C15
D15
A16
B16
C16
D16
A17

B17
C17
A18
B18
A19
A20
B19
B20

C18
C19
C20
D17
D18
D19
D20
E17

F20

E20
F17
F18
E19

J3

K4

L4

M4

B13

A15
C14

G4
H4

J4

E18
F19

R5

F4

E5

D7

Y1

W2

L3

H3

PARED7
PARED6
PARED5
PARED4
PARED3
PARED2
PARED1
PARED0

PAGRN7
PAGRN6
PAGRN5
PAGRN4
PAGRN3
PAGRN2
PAGRN1
PAGRN0

PABLU7
PABLU6
PABLU5
PABLU4
PABLU3
PABLU2
PABLU1
PABLU0

PBRED7
PBRED6
PBRED5
PBRED4
PBRED3
PBRED2
PBRED1
PBRED0

PBGRN7
PBGRN6
PBGRN5
PBGRN4
PBGRN3
PBGRN2
PBGRN1
PBGRN0

PBBLU7
PBBLU6
PBBLU5
PBBLU4
PBBLU3
PBBLU2
PBBLU1
PBBLU0

PCLKI

PDE
PVS
PHS

PCLK

RSTn

SDA

SCL

POWERPD

IICADDR

PWM7/DQM
PWM6/V_DIFF
PWM5/Motion
PWM4/M_LED
PWM3/BE_LED
PWM2
PWM1
PWM0

PD32

PD22

MOTION

XtalO

XtalI

TESTAP
TESTSP

C436
100uF/16V

C440
100n

C439
100n

C438
100n

C437
100n

JPEG PORT

MEMORY INTERFACE

External

OSD port

I123B
t0932

N17
M17

L17
K17
J17

H17
G17
F16

G18

E16
P17

C12

B12

A12

C11

B11

A11

A10

B10

C10

A9

B9

C9

A8

B8

T4
T3
T2
T1
R4
R3
R2
R1
P3
P2
P1
N4
N3
N2
N1
M3
M2
M1
L2
L1
K1
K2
J1
J2
H1
H2
G1
G2
G3
F1
F2
F3
E1
E2
E3
E4
D1
D2
D3
C1
C2
B1
A1
B2
A2
C3
B3
A3
D4
C4
B4
A4
D5
C5
B5
A5
D6
C6
B6
A6
C7
B7
A7
C8

A13

B14

A14

C13

R17
R18

T20
U20

T19

T18

T17

R19

E6
E7
E8
E9

E10
E11
E12
E13
E14
E15

T6
T7
T8
T9

T10
T11
T12
T13
T14
T15

P4

JP7
JP6
JP5
JP4
JP3
JP2
JP1
JP0

JPCLK

JPHS
JPHREF

MADDR13

MADDR12

MADDR11

MADDR10

MADDR09

MADDR08

MADDR07

MADDR06

MADDR05

MADDR04

MADDR03

MADDR02

MADDR01

MADDR00

MDQ63
MDQ62
MDQ61
MDQ60
MDQ59
MDQ58
MDQ57
MDQ56
MDQ55
MDQ54
MDQ53
MDQ52
MDQ51
MDQ50
MDQ49
MDQ48
MDQ47
MDQ46
MDQ45
MDQ44
MDQ43
MDQ42
MDQ41
MDQ40
MDQ39
MDQ38
MDQ37
MDQ36
MDQ35
MDQ34
MDQ33
MDQ32
MDQ31
MDQ30
MDQ29
MDQ28
MDQ27
MDQ26
MDQ25
MDQ24
MDQ23
MDQ22
MDQ21
MDQ20
MDQ19
MDQ18
MDQ17
MDQ16
MDQ15
MDQ14
MDQ13
MDQ12
MDQ11
MDQ10

MDQ9
MDQ8
MDQ7
MDQ6
MDQ5
MDQ4
MDQ3
MDQ2
MDQ1
MDQ0

MCLK

MWEN

MCASn

MRASn

OVR/MDQ65
OVG/MDQ66

OVB/MDQ70
OVI/MDQ72

OVFB/MDQ69

OVS/MDQ68

OHS/MDQ67

OVCLK

MDQ76
MDQ77
MDQ78
MDQ79
MDQ80
MDQ81
MDQ82
MDQ83
MDQ84
MDQ85
MDQ86
MDQ87
MDQ88
MDQ89
MDQ90
MDQ91
MDQ92
MDQ93
MDQ94
MDQ95

SDAO/MDQ64

POWER SECTION

I123D

t0932

F5

H5

K5

M5

P5

U6

D8

D10

U11

D12

U13

D14

G16

J16

L16

N16

G5

J5

L5

N5

D9

U10

D11

U12

D13

H16

K16

M16

V2

W1

V1

V3

H8

H9

H10

H11

H12

H13

J8

J9

J10

J11

J12

J13

K8

K9

K10

K11

K12

K13

L8

L9

L10

L11

L12

L13

M8

M9

M10

M11

M12

M13

N8

N9

N10

N11

N12

N13

VDD25

VDD25

VDD25

VDD25

VDD25

VDD25

VDD25

VDD25

VDD25

VDD25

VDD25

VDD25

VDD25

VDD25

VDD25

VDD25

VDD33

VDD33

VDD33

VDD33

VDD33

VDD33

VDD33

VDD33

VDD33

VDD33

VDD33

VDD33

VDDAM

VDDAP

VSSAM

VSSAP

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

R371

NC

PD9
TP7

C431
470uF/16V

R378

47R

C443
100n

C442
100n

C441
100n

R379

NC

R380

0R

R377

47R

C562

100uF/16V

TP11

TP10

TP13

TP12

TP15

TP14

C558
100n

C554
100n

C560
100n

C559
100n

6.8 Scalar/Sdram

ViewSonic Corporation

                                                         

Confidential - Do Not Copy

       

N2750w-1

 

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Содержание N2750w-1

Страница 1: ...Service Manual ViewSonic N2750w 1 M Model No VS10576 1M 27 LCD TV N2750w 1M_SM Rev 1a Apr 2006 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583...

Страница 2: ...nd specifically disclaims any warranty of merchantability or fitness for any particular purpose Further ViewSonic reserves the right to revise this publication and to make changes from time to time in...

Страница 3: ...tions 4 4 Exploded View and Parts List 8 5 Block Diagram 10 6 Schematic Diagrams 11 7 Working Theorem 25 8 Wiring Diagram 27 9 PCB Layout Diagrams 28 10 Trouble Shooting Flow Chart 36 11 Adjustment 40...

Страница 4: ...ician Always unplug the LCD TV before cleaning it Clean the cabinet with a clean dry cloth Apply non ammonia based cleaner onto the cloth not directly onto the glass screen Keep the LCD TV away from m...

Страница 5: ...y Color 16 7M Color Max 8bit color Viewing Angle CR 10 Horizontal 85 85 Vertical 85 85 Contrast Ratio 1000 1 typical Brightness 550 cd m2 typical Response Time 8ms typical gray to gray Active Display...

Страница 6: ...080ms 0 064ms V Border 0 254ms 0 000ms 0 000ms 0 254ms H V Sync Interlace No No No No ITEM 5 6 7 8 TIMING 800 600 56HZ 800 600 60HZ 800 600 72HZ 800 600 75HZ Pixel Rate 36 000MHZ 40 000MHZ 50 000MHZ 4...

Страница 7: ...TOTAL 13 417ms 16 666ms 14 272ms 13 328ms V DISPLAY 12 549ms 15 880ms 13 599ms 12 795ms V B Porch 0 784ms 0 600ms 0 513ms 0 466ms Vs Width 0 060ms 0 124ms 0 106ms 0 050ms V Border 0 00ms 0 000ms 0 00...

Страница 8: ...pin assignments for DVI cable DVI 24 pins DVI connector is designed to match with DVI D digital signal cable the pin assignment is as the following Pin Signal Assignment Pin Signal Assignment Pin Sig...

Страница 9: ...11 X3 X3 1F11 1F11 X2 1F01 1F12 X4 1F06 X4 IR PCB ASS Y 1F12 X6 1F12 X4 AUDIO PCB ASS Y 1F28 X2 1F26 1F25 1F29 X2 1F19 X2 1F21 X4 1F21 1F13 X2 1F32 1F14 X3 5B02X6 5B01 X4 5B03 2C01 2C05 2C03 2C04 2C06...

Страница 10: ...F25 M SCW 0824 0811 2080003700 SCREW SPE 1SZZTER001A M3 6LMSWR17 FZMY1 8 8 1F26 N A 2027259002 DUST COVER JC278 ABS 94HB BLACK 4001 1 1 1F27 N A 2044266601 FUNCTION KEY JC278 ABS 94V0 AL PLATE FUNCTI...

Страница 11: ...r w de interlace trumpion p HD t0932 LVDS Tx PC Audio In YPbPr Audio In AV Audio In TV AV Audio Out L R L R VGA input CCIR656 RGB 24bits A port B port I2C Control To Panel ANT DVI HDCP interface SiI16...

Страница 12: ...2 1 VI VO ADJ R116 NC R104 10K R117 0R C118 47uF 16V C119 220uF 16V R111 4K7 C116 100n L108 40uH I103 SAKEN 8050SD 1 3 5 2 4 VIN GND ON OFF OUTPUT FEEDBACK D103 MS22 1 2 C114 100n R509 0R Q111 SI9933A...

Страница 13: ...25 510R R127 4K7 RP03 47RX4 1 5 2 6 3 7 4 8 ODD RED ODD GREEN ODD BLUE EVEN RED EVEN GREEN EVEN BLUE I105 SII169 10 11 12 13 14 15 16 17 20 21 22 23 24 25 26 27 30 31 32 33 34 35 36 37 49 50 51 52 53...

Страница 14: ...100n C165 100n C172 100n C169 100n P107 RCA JACK 1X3 1 2 3 4 5 6 C170 100n C177 100n C178 100n C186 100n C187 100n C188 100n C189 100n C190 100n C191 100n R166 100R I109 AD9883KST 110 54 48 43 49 38...

Страница 15: ...NC L126 BEAD 200R I111 FQ 1236MK3 2 3 4 5 6 11 12 13 14 9 7 8 15 16 1 10 NC VTout Vb 5V SCL SDA AS 2ndIFout CVBSout VIF 5V AFout AF R TH1 TH2 TH3 TH4 NC AGC AF L C202 10uF 50V R189 100R L125 BEAD 200R...

Страница 16: ...50V L131 BEAD 200R C240 33p C239 33p X101 18 432MHz L133 NC L139 BEAD 200R C244 100p C234 330P C235 330P C236 NC 10uf 50V R221 10K L138 BEAD 600R C245 100p C223 56p I114 MSP3425G_LQFP64 50 51 47 44 45...

Страница 17: ...AVD3 AGND1 AGND2 AGND3 RmidBP GmidBP BmidBP REFBP VD_PLL1 GND_PLL1 GND_PLL2 GND_PLLD VD_PLLD VD_PLL2 FILT TPAD SDA SCL RSTn I2C_Addr MA0 MA1 MA2 MA3 MA4 MA5 MA6 MA7 MA8 MA9 MA10 MA11 BA0 BA1 MCLK WEn...

Страница 18: ...MA6 MA7 MA8 MA9 MA10 MA11 BA0 BA1 MCLK WEn CASn RASn CSn MD0 MD1 MD2 MD3 MD4 MD5 MD6 MD7 MD8 MD9 MD10 MD11 MD12 MD13 MD14 MD15 Rout7 AD2_7 Rout6 AD2_6 Rout5 AD2_5 Rout4 AD2_4 Rout3 AD2_3 Rout2 AD2_2 R...

Страница 19: ...68 67 2 4 5 7 8 10 11 13 74 76 77 79 80 82 83 85 25 26 27 60 61 62 63 64 65 66 24 6 52 46 38 32 12 31 33 34 36 37 39 40 42 45 47 48 50 51 53 54 56 28 59 22 23 29 43 3 9 35 41 49 55 75 81 78 84 86 72 5...

Страница 20: ...0R CP05 NC CP06 NC R396 100R I129 NC 51 52 54 55 56 2 3 4 6 7 8 10 11 12 14 15 16 18 19 20 22 31 32 48 47 46 45 42 41 40 39 44 49 43 36 34 35 33 5 13 21 29 53 1 9 17 26 50 23 24 25 27 28 30 38 37 TXIN...

Страница 21: ...0 1u 16V 0603 R410 10K C514 NC P116 NC 1 2 3 4 R409 NC R398 NC C522 NC R408 NC C519 1u 16V 0603 C524 47uF 16V R416 68K I131 TPA6110A2 1 2 3 4 5 6 7 8 BYPASS GND STANDBY IN2 VO2 VDD VO1 IN1 C525 1u 16V...

Страница 22: ...126 125 124 123 122 121 66 2 26 51 1 75 15 102 79 107 119 62 86 27 28 29 30 91 90 92 93 94 95 96 97 103 110 109 111 112 108 38 104 71 72 73 74 P00 P01 P02 P03 P04 P05 P06 P07 P10 P11 P12 P13 P14 P15 P...

Страница 23: ...F 50V C609 10uF 50V AP8210Q PLQFP64 I601 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 24 23 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40...

Страница 24: ...0 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 N C VREFL VSSL MUTE SLEEP PROT N C TPP TEST VSSR VREFR N C VDDR INR NFINR NFPR NFNR N C CDOR CDIR N C SENSENR SENSEPR PVDDR PVSSR N C HP_R HN_R...

Страница 25: ...Y0_MENU KEY3_DOWN KEY4_INC LED_R PWRON GND GND GND GND P711 CON6_2mm 1 2 3 4 5 6 D711 S701 I711 CAM 1538TP5 1 2 3 VOUT GND VCC S705 S702 S703 S704 S706 S707 P701 CON7_2mm 1 2 3 4 5 6 7 D721 NC S721 I7...

Страница 26: ...SPS A D converters in the t0956 chip can be used for digitalizing RGB from PC or YPbPr component signals as well Piior to each channel contains the AGC and clamping circuits with paogrammable gain and...

Страница 27: ...ation PWMs Pulse Width Modulators from 28K to 100Hz E Audio Three audio sources put into MSP 3425G or MSP 3445G which fist select the sources and do pre amplify The bass rrelbe control also be provide...

Страница 28: ...115 P105 P106 P107 P122 P112 P118 P701 P711 P601 P602 P603 P108 P111 P117 P113 P116 P110 IR PCB AUDIO PCB CN2 CN3 CN1 P908 P905 W901 SPK R SPK L W901 P906 P907 P123 LCD PANEL LCD PANEL 8 Wiring Diagra...

Страница 29: ...9 PCB Layout Diagrams 9 1 MAIN PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy N2750w 1 28...

Страница 30: ...9 2 MAIN PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy N2750w 1 29...

Страница 31: ...9 3 AUDIO PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy N2750w 1 30...

Страница 32: ...9 4 AUDIO PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy N2750w 1 31...

Страница 33: ...9 5 KEYPAD PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy N2750w 1 32...

Страница 34: ...9 6 KEYPAD PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy N2750w 1 33...

Страница 35: ...9 7 IR PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy N2750w 1 34...

Страница 36: ...9 8 IR PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy N2750w 1 35...

Страница 37: ...Board Start 12V On C101 5V on C106 5V on C115 Check I101 D101 I104 I1 10 Check I103 D103 I114 I131 3 3V on C119 No Yes No No No Yes Yes Yes 3 3V on C145 Yes 2 5V on C431 Check I105 I128 Check I109 Che...

Страница 38: ...k I113 Pin3 Pin13 Check I114 Pin20 Pin21 TV AV S Video YCbCr No No No Yes Yes Yes Replace I113 Check I601 Pin13 Pin14 Replace I114 No Yes Yes No Check P111 Pin2 Pin5 PC Check Audio input Yes Check I60...

Страница 39: ...ignal at RP30 TV mode AV mode S Video mode YCbCr mode No No No No Yes Yes Yes Yes Replace X103 Check I116 has output signal at RP31 Check L142 is 3 3V Check I123 has out put signal at RP18 RP23 Replac...

Страница 40: ...38 Press menu Key if osd display Check Keypad pcb is ok Check Reset circuit Check inverter is OK Change Inverter Check I123 has output signal at RP18 RP23 Check I123 I127 X105 Check panel power is 5V...

Страница 41: ...he front detail specifications 1 Eeprom Initial A Timing 1024x768 60Hz B Pattern Cross hatch C Switch off the power and press the and key simultaneously and switch on the power At this time we can ent...

Страница 42: ...0 271 0 03 y 0 278 0 03 Y 300 cd m 2 H Press menu key select the OSD page on INPUT SELECT and select MAIN YPbPr Input source DVD Player Pattern color bar I Repeat the F and G step ViewSonic Corporati...

Страница 43: ...P81 1 12 Electronic LCD Panel CMO V270W1 L03 E 00001795 2212006100 1 13 Hardware Bracket Fix JC278 Base Aluminum Black 4001 HW 00001796 2071870401 1 14 Carton Box ViewSonic N2750W VS10576 1M P 0000179...

Страница 44: ...1798 2012177500 POLYFOAM JC278 EPE UP L 6P20 1 40 P 00001799 2012177600 POLYFOAM JC278 EPE UP R 6P21 1 41 P 00001800 2012178400 POLYFOAM JC278 EPE DOWN 6P22 1 42 N A 2055135010 LABEL VIEWSONIC N2750W...

Страница 45: ...5 T C472 1 82 N A 2346747496 CAP CHIP 85 C CS 0603 Y5V 16V 0 47u Z T C523 C616 2 83 E C 0404 3816 2346110296 CAP CHIP 125 C CS 0603 X7R 50V 1000p K T C556 C557 2 84 N A 2346115396 CAP CHIP 125 C CS 0...

Страница 46: ...6 148 N A 2379360196 BEAD HI IMPEDANCE Z 600ohm 100MHZ 0603 200mA L129 L130 L134 L135 L136 L137 L138 L140 L141 9 149 E R 0405 6600 2253200096 RES CHIP 1 10W RC 0603 1 10W 0 ohm J T L142 L143 R117 R131...

Страница 47: ...ohm J T R130 R132 R134 R136 R163 5 208 E R 0405 6409 2253210196 RES CHIP 1 10W RC 0603 1 10W 100 ohm J T R137 R150 R151 R152 R153 R164 R166 R167 R172 R174 R175 R189 R190 R219 R220 R242 R243 R368 R369...

Страница 48: ...ohm J T R674 1 245 E R 0405 6422 2259247008 RES CHIP NETWORKS 8P4R 1 16W 47 ohm J P 0 8 RP01 RP02 RP03 RP04 RP05 RP06 RP07 RP08 RP09 RP10 RP11 RP12 EP18 RP19 RP20 RP21 RP22 RP23 20 246 M SW 0815 0182...

Страница 49: ...7 Working Theorem 8 Wiring Diagram 9 PCB Layout Diagrams 10 Trouble Shooting Flow Chart 11 Adjustment 12 Recommended Spare Parts List B Are you satisfied with this Service Manual Item Excellent Good...

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