ViewSonic VA720-2 Service Manual Download | Manualshive

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SD1210A-2

C

QPWB-5408T8---C

C

7

9

Wednesday, March 20, 2002

Title

Size

Document Number

Rev

Date:

Sheet

of

VCLK1

OSD_HS

OSD_VS

HSYNC_X

G_IN0
G_IN1
G_IN2
G_IN3

G_IN4
G_IN5

G_IN6
G_IN7

RE2

RE0

RE1

RE3

BE2

RE7

BE1

BE3

BE0

BE7

BE5

BE4

BE6

G_IN[0..7]

FCLK1

BB7

BB6

BB5

BB4

BB[0..7]

BB0

BB1

BB2

BB3

BA[0..7]

BO2

BO1

BO3

BO0

BO7

BO5

BO4

BO6

BA7

BA6

BA5

BA4

BA0

BA1

BA2

BA3

GB[0..7]

GE2

GE1

GE3

GE0

GE7

GE5

GE4

GE6

GB7

GB6

GB5

GB4

GB2

GB1

GB0

GB3

GA[0..7]

GO2

GO1

GO3

GO0

GO7

GO5

GO4

GO6

GA4

GA7

GA6

GA5

GA0

RB[0..7]

RE2

RE1

RE3

RE0

RE7

RE5

RE4

RE6

RB7

RB6

RB5

RB4

RB0

RB1

RB2

RB3

RA[0..7]

RO2

RO1

RO3

RO0

RO7

RO5

RO4

RO6

RA7

RA6

RA5

RA4

RA0

RA1

RA2

RA3

HSYNC_X

VCLK1

GA3

GA2

GA1

GE5

GE1

GE2

GE4

GE6

GE0

GE3

GE7

GO3
GO2
GO1
GO0

RO7
RO6
RO5
RO4

RO3
RO2
RO1
RO0

BE0

BO1

BE7

BO5

BE6

BO2

BO0

BE3

BO6

BO3

BE4

BE5

BE2

BO7

BE1

BO4

GO7

RE5

RE6

RE4

FCLK1

GO5

GO6

GO4

R_IN[0..7]

R_IN2

R_IN1

R_IN3

R_IN7

R_IN5

R_IN6

R_IN4

R_IN0

B_IN[0..7]

B_IN6

B_IN4

B_IN7

B_IN5

B_IN3

B_IN0
B_IN1
B_IN2

ASIC_H

MCU_VS_OUT

ROM_SCL

ROM_SDA

ASIC_SCL

ASIC_SDA

12MHZ

VCLK00

FBLK

OSD_B

OSD_G

OSD_R

ASIC_RESET_

OSD_VS

OSD_HS

BB[0..7]

BA[0..7]

GB[0..7]

GA[0..7]

RB[0..7]

RA[0..7]

LCD_DE

LCD_VS

LCD_HS

LCD_CLK

ROM_RW

PLL1_PD

OSD_CLK

HSYNC_X

HSYNC_X_BAR

G_IN[0..7]

R_IN[0..7]

B_IN[0..7]

3_3VSD

3V3b

3_3VSD

3V3

5V

5V

3V3b

LP7

33LP

8

1

7

6

5

4

3

2

U11

24LC16

1

2

3

4

5

6

7

8

A0

A1

A2

VSS

SDA

SCL

WP

VDD

C121

33

CR5

(NC)CP

4

3

2

1

8

7

6

5

R85
33

R87
33

CR7

(NC)CP

4

3

2

1

8

7

6

5

U13

(NC)W170-01

1

2

3

4

5

6

7

8

FIN

IN

GND

FS0

FS1

OUT1

VDD

OUT2

U22
SD1010

1

2

3

4

5

6

7

8

9

10

11

12

14

13

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160

B_IN10

B_IN11

B_IN12

B_IN13

DATA_SEL

B_IN14

B_IN15

B_IN16

B_IN17

ROM_SCL

ROM_SDA

GND

CPU_SDA

CPU_SCL

PWM_CTL

CLK_1M

VDD

CLK_1M_O

RESET_B

R_OSD

G_OSD

B_OSD

EN_OSD

SCAN_EN

TEST_EN

VCLK01

FCLK0

VCLK00

FCLK1

VCLK1

HSYNC_O

VSYNC_O

DCLK_OUT

DE_OUT

GND

VDD

R_OUT0_E

R_OUT1_E

R_OUT2_E

R_OUT3_E

HSYNC_X

VSYNC_X

GND

R_OUT4_E

VDD

VDD

R_OUT5_E

GND

R_OUT6_E

R_OUT7_E

GND

R_OUT0_O

R_OUT1_O

R_OUT2_O

R_OUT3_O

VDD

R_OUT4_O

R_OUT5_O

R_OUT6_O

R_OUT7_O

GND

G_OUT0_E

G_OUT1_E

G_OUT2_E

G_OUT3_E

G_OUT4_E

VDD

G_OUT5_E

G_OUT6_E

G_OUT7_E

GND

GND

G_OUT0_O

G_OUT1_O

G_OUT2_O

G_OUT3_O

VDD

G_OUT4_O

G_OUT5_O

G_OUT6_O

G_OUT7_O

GND

GND

B_OUT0_E

B_OUT1_E

B_OUT2_E

B_OUT3_E

B_OUT4_E

B_OUT5_E

B_OUT6_E

VDD

VDD

B_OUT7_E

GND

B_OUT0_O

B_OUT1_O

B_OUT2_O

B_OUT3_O

VDD

B_OUT4_O

B_OUT5_O

B_OUT6_O

B_OUT7_O

GND

R_IN00

R_IN01

R_IN02

R_IN03

VDD

R_IN04

R_IN05

R_IN06

R_IN07

R_IN10

R_IN11

GND

R_IN12

R_IN13

VDD

R_IN14

R_IN15
R_IN16
R_IN17
GND
G_IN00
G_IN01
G_IN02
G_IN03
VDD
G_IN04
G_IN05
ADC_CLK0
G_IN06
G_IN07
GND
G_IN10
G_IN11
ADC_CLK1
G_IN12
G_IN13
VDD
G_IN14
G_IN15
G_IN16
G_IN17
GND
B_IN00
B_IN01
B_IN02
VDD
B_IN03
B_IN04
B_IN05
B_IN06
B_IN07
GND
HSYNC_I
VSYNC_I
DE_IN
VDD

R81
4.7K

R82
4.7K

C122
0.1U

R83 33

LP2

33LP

8

1

7

6

5

4

3

2

C124

47U/16V

C125

0.1U

LP4

33LP

8

1

7

6

5

4

3

2

C126

0.1U

C127

0.1U

CR2

(NC)CP

4

3

2

1

8

7

6

5

R89

22

CR4

(NC)CP

4

3

2

1

8

7

6

5

LP10

33LP

8

1

7

6

5

4

3

2

LP12

33LP

8

1

7

6

5

4

3

2

L26
BEAD

L29
NC

CR10

(NC)CP

4

3

2

1

8

7

6

5

LP1

33LP

8

1

7

6

5

4

3

2

L25
BEAD

LP3

33LP

8

1

7

6

5

4

3

2

LP9

33LP

8

1

7

6

5

4

3

2

CR12

(NC)CP

4

3

2

1

8

7

6

5

U20

NC(74AHC1G125)

1

2

3

4

5

OE_

A

GND

Y

VCC

LP11

33LP

8

1

7

6

5

4

3

2

CR9

(NC)CP

4

3

2

1

8

7

6

5

CR11

(NC)CP

4

3

2

1

8

7

6

5

C141

10u/10v

R90

0

C140

0.1u

C139

0.01u

CR3

(NC)CP

4

3

2

1

8

7

6

5

L28
BEAD

C142

NC

C138
NC

R88

22

L27
BEAD

C144

NC

C128

0.1U

U12

AV9173-01

1

2

3

4

5

6

7

8

FBIN

IN

GND

FSO

OE

CLK1

VDD

CLK2

L30
NC

C129

0.1U

C143

0.01u

C130

0.1U

C131

0.1U

CR1

(NC)CP

4

3

2

1

8

7

6

5

C132

0.1U

C133

0.1U

L24
BEAD

LP6

33LP

8

1

7

6

5

4

3

2

L21
BEAD

C134

0.1U

C135

0.1U

L22
NC

LP8

33LP

8

1

7

6

5

4

3

2

R84 33

C137

0.1U

CR6

(NC)CP

4

3

2

1

8

7

6

5

C136

0.1U

C123

NC

R80

33

R79

33

L23 BEAD

LP5

33LP

8

1

7

6

5

4

3

2

CR8

(NC)CP

4

3

2

1

8

7

6

5

C120

33

R86 33

ViewSonic Corporation

33

Confidential – Do Not Copy VE

7

00-1

VA720-2

«
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Summary of Contents for VA720-2

Page 1: ...vice Manual VE700 1_SM_545 Rev 1a May 2002 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 ViewSonic VE700 1 Model No VLCDS23724 1W 17 Color TFT LCD Display VA720 2 VLCDS23724...

Page 2: ...expressed or implied with respect to the contents hereof and specifically disclaims any warranty of merchantability or fitness for any particular purpose Further ViewSonic reserves the right to revise...

Page 3: ...ROLS 3 4 INTERNAL CONNECTOR PIN DEFINITION 4 5 CABLE PIN DEFINITION 10 6 BLOCK DIAGRAM 13 7 TROUBLE SHOOTING FLOW CHART 14 8 SPARE PARTS LIST 20 Confidential Do Not Copy ViewSonic Corporation iii 9 EX...

Page 4: ...otect the display from overheating Do not block ventilation slots and openings with objects or install the display in a place where ventilation may be hindered z Do not install this display near a mot...

Page 5: ...Angle CR 10 Horizontal 75 Vertical 70 RESPONSE TIME 40 ms typ Contrast Ratio 400 1 typ Brightness 250 cd m2 typ Active Display Area 337 9 mm horizontal x 270 3mm vertical AC DC adapter Input AC 87 26...

Page 6: ...o confirm the current selection 4 ADJUST UP To scroll up in menu or to increase value of selected item 5 ADJUST DOWN To scroll down in menu or to decrease value of selected item 6 POWER INDICATOR The...

Page 7: ...NTER For OSD Adjustment 3 UP For OSD Adjustment 4 DOWN For OSD Adjustment 5 RED For LED 6 GREEN For LED 7 PSW Power ON OFF 8 GND JP1 Output Terminal for inverter unit Connector P N VCNCP0906REJST Pin...

Page 8: ...gnal 7 GREEN RETURN GND for GREEN video signal 8 BLUE RETURN GND for BLUE video signal 9 5V_DDC TO DDC PIN 8 10 SYNC RETURN GND for SYNC Signal 11 GND GND 12 DDC data TO DDC PIN 5 SDA 13 H SYNC Horizo...

Page 9: ...XOOG5 20 XOOG4 21 XOOG3 22 XOOG2 23 XOOG1 24 XOOG0 25 GND 26 XOOB7 27 XOOB6 28 XOOB5 29 XOOB4 30 XOOB3 31 XOOB2 32 XOOB1 33 XOOB0 34 OPOL 35 OLOAD 36 ODOM 37 GND 38 XOCLK 39 GND 40 XODINV 41 GND 42 XO...

Page 10: ...FOR2 7 XFOR1 8 XFOG0 9 XFOG7 10 XFOG6 11 XFOG5 12 XFOG4 13 XFOG3 14 XFOG2 15 XFOG1 16 XFOG0 17 GND 18 XFOB7 19 XFOB6 20 XFOB5 21 XFOB4 22 XFOB3 23 XFOB2 24 XFOB1 25 XFOB0 26 XFFR7 27 XFFR6 28 XFFR5 29...

Page 11: ...XFFB2 49 XFFB1 50 XFFB0 J1 Output terminal for LCD PANEL Connector P N QCNCP2002T8 Pin NO Symbo Function 1 XOFG6 2 XOFG5 3 XOFG4 4 XOFG3 5 XOFG2 6 XOFG1 7 XOFG0 8 GND 9 XOFB7 10 XOFB6 11 XOFB5 12 XOFB...

Page 12: ...1 KEY 2 LED G 3 LED R 4 MENU S1 For OSD Adjustment 5 SELECT S2 For OSD Adjustment 6 GROUND 7 DOWN S4 For OSD Adjustment 8 UP S3 For OSD Adjustment INVERTER CON1 Inverter input Terminal Pin Symbo Func...

Page 13: ...ship Invertercable QCNWS0906T8010 24AWG Shieldingcable connection relationship PHR 6 PHR 6 Pin NO Pin NO 1 1 2 2 3 4 4 3 5 5 6 6 PHR 8 PHR 8 Pin NO Pin NO 1 8 2 7 3 6 4 5 5 4 6 3 7 2 8 1 ViewSonic Cor...

Page 14: ...5 5 42 42 6 6 43 43 7 7 44 44 8 8 45 45 9 9 46 46 10 10 47 47 11 11 48 48 12 12 49 49 13 13 50 50 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 23 24 24 25 25 26 26 27 27 28 28 29 29 30 30...

Page 15: ...NEL 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 23 24 24 25 25 26 26 27 27 28 28 29 29 30 30 PANEL cable QCODS1476T8 ViewSonic...

Page 16: ...HIC 12V 5V W1 DB15 A D CONVERTER SCALER SD1210 2 T CON U17 J2 J1 J3 DDC EPROM 24C21A Serial EEPROM MPU U14 MTV130P OSD JP1 TO INVERTER JP2 SWITCH MODE POWER SUPPLY 17 LCD PANEL SW BOARD DPWBN5415T8 TC...

Page 17: ...dd vertical line is dark Does picture display Back light On or off A dark picture or a picture full of colored vertical lines Check power LED Check display resoluton Check inverter Check I F board JP1...

Page 18: ...D o e s t h e s c r e e n d i s p l a y Y E S N O display ok YES OSD debug 3 NO solution with no display 2 loss of RGB NO screen shaking CHK LP1 LP12 CHK U1 C2 C4 R2 for PLL NO CHK R83 84 86 L23 YES J...

Page 19: ...o Not Copy No screen handler 2 Back light on YES NO 3 3V OK YES NO START RP 1 RP 6 YES U1 PIN 30 31 OK U17 PIN1 24 34 47 63 77 246 256 YES A CHK CKT SHEET 6 POWER NO NO CHKU1 3 3V2 3 3V3_PLL PIN 29 cl...

Page 20: ...Copy CHK CKT SHEET 6 POWER No screen handler 2 B A CHK U17 LED always ON or always OFF when powering on CHK U14 CKT YES NO CHK SYSTEM POWER CHK U8 OK NG CHK CKT SHEET 2 PANEL CHK U16 if recall functi...

Page 21: ...OSD DEBUG 3 CHK L17 OK CHK U14 PIN33 34 37 38 PUSH KEY SWITCH ViewSonic Corporation 18 Confidential Do Not Copy VE700 1 VA720 2...

Page 22: ...JP2 12V INPUT F3 L20 U9 3 V 3 panel _5v FOR U1 U22 U8 L17 PIN 2 U6 PIN 2 4 3 V 3 FOR U17 CHK SHEET 3 9 6V 25 09V 4 96 1 25 FOR U17 ViewSonic Corporation 19 Confidential Do Not Copy VE700 1 VA720 2...

Page 23: ...KEYBOARD CAB A 3 HINGE CAB A 2 420712 XEPSD40P12000 2 PCS 1 CAB A CAB B 2 420713 XBMSD30P06000 21 PCS 1 INVERTER 2 MAIN 5 SHIELD 10 D SUB 3 CABLE CLIP 1 420715 XBMSD40P08000 4 PCS 1 MHNGM0019 4 42071...

Page 24: ...B 1 PCS 1 I F BOARD FOR VIEW SONIC 17 260002 VRMDNVG 000J A 7 PCS 1 R21 39 55 90 112 116 117 260003 VRMDNVG 000J A 10 PCS 1 R122 124 130 131 132 134 137 138 141 142 260004 VRMDNVG 000J A 5 PCS 1 R148...

Page 25: ...PCS 1 C128 129 130 131 132 133 134 135 136 137 260070 VCLFHN1HG104Z A 7 PCS 1 C140 147 155 156 159 160 161 260071 VCLFHN1HG104Z A 7 PCS 1 C175 176 177 178 188 189 R68 260075 VCICHN1HH101J A 6 PCS 1 C2...

Page 26: ...1 SECOND SOURCE 260139 VSDSS22 A 3 PCS 1 D4 5 7 260139A VSDSS24 A 3 PCS 1 SECOND SOURCE 260139B VSDSK22 A 3 PCS 1 SECOND SOURCE 260139C VSDSK24 A 3 PCS 1 SECOND SOURCE 260139D VSDLYSS32 A 3 PCS 1 SEC...

Page 27: ...EJST 1 PCS 1 J1 MODEL CPWBVE700T8ACED LEVEL NO PARTS CODE QTY UNIT POSITION AND DESCRIPTION 421001 VVLM170ES04 1 SET 1 DUMB PANEL 17 AV 421002 RUNTP5392T8 1 PCS 1 INVERTER 421003 DPWBN5408T8 1 SET 1 I...

Page 28: ...9 EXPLODED DIAGRAM ViewSonic Corporation 25 Confidential Do Not Copy VE700 1 VA720 2...

Page 29: ...HIELD CASE INVERTER BOARD 12 RUBBER LEG 13 D SUB BRACKET 14 DECORATION PLATE 15 SHIELD CASE I F BOARD 16 I F BOARD 17 LCD PANEL 17 18 KENSINGTON BRACKET 19 REAR COVER 20 LOGO COVER 21 HINGE COVER 22 B...

Page 30: ...v L8 BEAD C33 0 01u C14 10p C12 NC C18 NC U2 74LV14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 A1 B1 A2 B2 A3 B3 GND B4 A4 B5 A5 B6 A6 VCC C40 0 1u R3 75 R11 33 R13 2K U4 2421 1 2 3 4 5 6 7 8 NC NC NC GND SDA S...

Page 31: ...3 3V GAVCC C46 100u 25V B1 15uH FL1 NC FL R22 47K C56 0 01u 16V C51 0 47u 16V C47 0 1u 25V 5V1 1 PAD FL2 NC FL FL3 NC FL C55 0 01u 16V C53 0 01u 16V C54 0 47u 16V R21 0 B2 BEAD C50 0 47u 16V B3 BEAD...

Page 32: ...5 2200p R25 0 R28 0 R31 2K C57 1u 25V R32 14 7K 1 L12 47uH R29 0 NMOS Q3 SI3434DV 1 2 3 4 5 6 D D G S D D R37 2 2K 1 C67 1u 50V R41 68K 5 R59 7 5K 1 C89 0 1u C76 0 1u 25V R45 39K 5 R53 10K Q4 2N7002E...

Page 33: ...XOEG 0 7 XOER 0 7 XOOB 0 7 XOOG 0 7 XOOR 0 7 BA5 QB3216C301T4 1 2 3 4 5 6 7 8 CA18 22CP 1 8 2 7 3 6 4 5 BA7 QB3216C301T4 1 2 3 4 5 6 7 8 CA24 22CP 1 8 2 7 3 6 4 5 CA22 22CP 1 8 2 7 3 6 4 5 BA22 QB321...

Page 34: ...XEDINV EPOL XECLK Gate_ON XOEG 0 7 XOER 0 7 XOOB 0 7 XOOG 0 7 XOOR 0 7 XEOB 0 7 XEOR 0 7 XEOG 0 7 XEEB 0 7 XEER 0 7 XEEG 0 7 XOEB 0 7 YVEE_ 4 95V YV1_ 25 09V AVDD_ 9 6V V 3 3V V33T1 1 PAD GATE1 1 PAD...

Page 35: ...100U 16V L19 BEAD C104 0 01u R153 24K C105 470u 16v C113 0 1U C102 0 1u R173 1k R67 10K C103 0 1u C189 0 1U R69 22 JP3 CON4 1 2 3 4 AI5 AI D34 1 U23 SI9435DY 1 2 3 4 5 6 7 8 S S S G D D D D C188 0 1u...

Page 36: ...N13 DATA_SEL B_IN14 B_IN15 B_IN16 B_IN17 ROM_SCL ROM_SDA GND CPU_SDA CPU_SCL PWM_CTL CLK_1M VDD CLK_1M_O RESET_B R_OSD G_OSD B_OSD EN_OSD SCAN_EN TEST_EN VCLK01 FCLK0 VCLK00 FCLK1 VCLK1 HSYNC_O VSYNC_...

Page 37: ...22P C152 22p R101 22 R107 100 L33 BEAD R106 10K C147 0 1u C191 NC Q14 MMBT3904L 1 2 3 D8 1N4148 R102 1M C160 0 1u C155 0 1u R160 2 2K R159 4 7K C190 NC C157 NC C156 0 1u U16 24LC16 1 2 3 4 5 6 7 8 A0...

Page 38: ...192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241...

Page 39: ...11 PCB LAYOUT DIAGRAM ViewSonic Corporation 36 Confidential Do Not Copy VE700 1 VA720 2...

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