LCD panel type 13 - go-gddq. · PDF fileModel No. VLCDS23724-2W 17” Color TFT LCD Display Service Manual ViewSonic VA720-2 ViewSonic 381 Brea Canyon Road, Walnut, California 91789

Model No. VLCDS23724-2W

17” Color TFT LCD Display

Service Manual

ViewSonic VA720-2

ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

(VA720-2_SM_593 Rev. 1a – Jan.. 2004)

Copyright

Copyright 2003 by ViewSonic Corporation. All rights reserved. No part of this publication may bereproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical,manual or otherwise, without the prior written permission of ViewSonic Corporation.

Disclaimer

ViewSonic makes no representations or warranties, either expressed or implied, with respect to thecontents hereof and specifically disclaims any warranty of merchantability or fitness for any particularpurpose. Further, ViewSonic reserves the right to revise this publication and to make changes from timeto time in the contents hereof without obligation of ViewSonic to notify any person of such revision orchanges.

Revision History

Revision Date Description Of Changes Approval1a 08/01/04 Initial Release DCN- 3608 Angela Luh

Trademarks

ViewSonic is a registered trademark of ViewSonic Corporation.All other trademarks used within this document are the property of their respective owners.

Optiquest is a registered trademark of ViewSonic Corporation.

ViewSonic Corporation Confidential - Do Not Copy VA720-2

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TABLE OF CONTENTS

2. Specification

3. Front Panel Function Control Description

4. Circuit Description

6. Trouble Shooting Flow Chart

9. Block Diagram

10. Schematic Diagrams

7. Recommended Spare Parts List

1. Precautions and Safety Notices

5. Adjusting Procedure

8. Exploded Diagram And Spare Parts List

iiViewSonic Corporation Confidential - Do Not Copy VA720-2

11. PCB Layout Diagrams

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2

4

5

6

7

11

15

18

19

21

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1. Precautions and Safety Notices

Prior to using this manual, please ensure that you have carefully followed all the procedures outlined in the user manual for this product. Read all of these instructions. Save these instructions for later use. Follow all warnings and instructions marked on the product. Do not use this product near water. This display should be installed on a solid horizontal base. When cleaning, use only a neutral detergent cleaner with a soft damp cloth. Do not spray with liquid or aerosol cleaners. Do not expose this display to direct sunlight or heat. Hot air may cause damage to the cabinet and other parts. Adequate ventilation must be maintained to ensure reliable and continued operation and to protect 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. Do not install this display near a motor or transformer where strong magnetism is generated. Images on the display will become distorted and the color irregular. Do not allow metal pieces or objects of any kind fall into the display from ventilation holes. Slots and openings in the cabinet and the back or bottom are provided for ventilation, to ensure reliable operation of the product and to protect it from overheating, those openings muse not be blocked or covered. The openings should never be blocked by placing the product on a bed, sofa, rug, or other similar surface. This product should never be placed near or over a radiator or heat register. This product should not be placed in a built-in installation unless proper ventilation is provided.

1ViewSonic Corporation Confidential - Do Not Copy VA720-2

2. Specification

2.1. PRODUCT SPECIFICATIONS

LCD panel type 17.0” TFT(AU)

Power Consumption 40 W

Displayable Resolution SXGA 1280 x 1024 maximum

Pixel dimension 0.264 mm x 0.264 mm

Display Color 16.7 M

Viewing Angle (CR≥10)

Horizontal: ±70° Vertical: ±70°

Response Time Tr:12ms Tf:4ms( typ).

Contrast Ratio 450:1 typ.

Brightness 200 cd/m2 (min),260 cd / m2 typ.

Active Display Area 337.9 mm horizontal x 270.3mm vertical

AC/DC adapter Input:AC 100~264V,47~63 Hz Output:+12V DC.

Dimensions ( WxHxD ) 415 mm(W) x 403(H) mm x 229(D) mm

Weight (Net / Gross) 5.4 / 7.6 kg (unit)

Input connector 15 Pin D-Sub.

Power management YES

Temperature

Operating : 0°C ~ +40°C Storage : -20°C ~ +60°C


2.2. FACTORY SUPPORTING MODES

Primary Preset VESA 1280 x 1024 @ 60 Hz

Factory Preset Modes 1. VESA 640 x 350 @ 70Hz, 31.47kHz, -/+ 2. VESA 720 x 400 @ 70Hz, 31.467kHz, +/- 3. VESA 640 x 480 @ 60Hz, 31.469kHz, -/- 4. VESA 640 x 480 @ 72Hz, 37.861kHz, -/- 5. VESA 640 x 480 @ 75Hz, 37.5kHz, -/- 6. MAC 640 x 480 @ 67Hz, 35kHz, 7. VESA 800 x 600 @ 56Hz, 35.156kHz, +/+ 8. VESA 800 x 600 @ 60Hz, 37.879kHz, +/+ 9. VESA 800 x 600@ 72Hz, 48.077kHz,+/+ 10. VESA 800 x 600 @ 75Hz, 46.875kHz, +/+

11. MAC 832 x 624 @ 75Hz, 49.725kHz, 12. VESA1024 x 768 @ 60Hz, 48.363kHz, -/- 13. VESA1024 x 768 @ 70Hz,56.476kHz, -/- 14. VESA 1024 x 768 @ 72Hz, 58.036kHz, -/- 15. VESA 1024 x 768 @ 75Hz, 60.023kHz, +/+ 16. MAC 1024 x 768 @ 75Hz, 60.241kHz, 17. VESA 1280 x 1024 @ 60Hz, 63.981kHz, +/+ 18. VESA 1280 x 1024 @ 75Hz, 79.976kHz, +/+

19. MAC 1152 x 870 @ 75Hz, 68.6kHz,

2.3. D-SUB CONNECTOR This section describes the pin assignment of the LCD’s video connector. It is called 15 Pin Mini D-sub Connector.

Pin NO. Signal Connector 1 Red Video Signal 2 Green Video Signal 3 Blue Video Signal 4 N.C. 5 Ground 6 Ground 7 Ground 8 Ground 9 +5v 10 Ground 11 N.C. 12 DDC data 13 Horizontal sync signal 14 Vertical sync signal 15 DDC clock


3. Front Panel Function Control Description

Location of Controls

[1]MENU ADJUST LED POWER [2]ENTER ADJUST

1) POWER :

Press the power button to turn the monitor on. Press it again to turn the monitor off. 2) [1]MENU :

Enter or exit the OSD adjustment menu.it also exit from the submenu back to previous menu. 3) [2]ENTER :

To 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 LED will light with green color in normal on state,and will light with orange color in power saving mode. 7) Brightness/Contrast: press button UP/DOWN . 8) Auto Image Adjust : press button [2] . 9) OSD lock and unlock: press two buttons [1]&[up] simultaneously for 10 seconds. 10) Power lock and unlock: press two buttons [1]&[Down] simultaneously for 10 seconds. 11) ALL RESET: First, power off the monitor, un-plug the AC cord, then press “ ” and “Power “ key at the same time and plug the AC cord. 12) Factory Mode:First, power off the monitor, un-plug the AC cord and be sure the signal cable is connected(D-sub

connected) , then press “2” and “Power “ key at the same time and plug the AC cord. 13) RUN-IN mode: First, power off the monitor, un-plug the AC cord and be sure the signal cable is not connected (D-sub not connected) , then press “2” and “Power “ key at the same time and plug the AC cord. 14) ISP mode:First, power off the monitor, unplug the AC cord, then press “2” and “Power “ and “down” key at the same time and plug the AC cord. 15) AUTO color: then press “1” and ““ and “” key at the same time.


4 Circuit Description


A. DC-DC CONVERTER AND LDO This brick converts the 12V input voltage to 5V for panel use and U9 converts the voltage from 5V to 3.3V ,

U8 converts the voltage from 5V to 2.5V for controller use. It consists of a PWM IC (LM2596), flywheel Diode (D4), buck choke (L1), and capacitor (C68,C69). U7 (LM2596) is a PWM generator working at 150Khz.

Self protection features include a two stage frequency reducing current limit for the output switch and an over temperature shutdown for complete protection under fault condition.

U8 is a low dropout voltage and fast trasient response three terminal regulator, the output voltage is 2.5V fixed. U9 is a low dropout voltage and fast trasient response three terminal regulator, the output voltage is 3.3V fixed.

B. Scaling controller The gm2121 is a graphics processing IC for Liquid Crystal Display (LCD) monitor at SXGA resolution . It provides a high-speed triple-ADC and PLL,a high quality zoom and shrink scaling engine , an on-screen display (OSD) controller, digital color controls, an on-chip micro-controller ( OCM ) and industry standard dual four channel LVDS transmitter for direct connect to LCD panel with LVDS interface. The triple-ADC is to convert RGB analog signal to digital signal. The gm2121 is a complete 8-bit up to 162MHz (SXGA 75Hz / UXGA 60Hz) monolithic analog interface optimized for capturing RGB graphic signal, +3.3V and +2.5V power supply is necessary.

The gm2121 scaling filter can combine it’s advanced scaling with a pixel-replication type scaling function.this is useful for improving the sharpness and definition of graphics when scaling at high zoom factors. Gm2121 provides

an 8 to 10 bit look-up table (LUT) for each input color channel intended for Gamma correction and to compensate for a non-linear response of the LCD panel . A 10-bit output results in an improved color depth control. The 10-bit output

is then dithered down to 8 bits( or 6 bits) per channel at the display .

5. Adjusting Procedure

First, power off the monitor, un-plug the AC cord and be sure the signal cable is connected(D-sub connected) , then press “2” key at the same time and plug the AC cord to factory.

Auto Image Adjust automatically sizes, centers, and fine tunes the video signal to eliminate waviness and distortion.Press the [2] button to obtain a sharper image.




YES

NO ON

OFF

GREEN Hsync,Vsync or DE error

ORANGE

OSD no respones Too dim

The brightness is different between upper and lower side of panel Partial picture without Color

Vertical,Horizontal None synchronousness

A few of colorfully Vertical lines Even(or odd) vertical Line is dark

Check SW board S1~S5

Check OSD adjustment

Check inverter Check backlight

Check signal cable Check I/F board Check LCD panel

Check LCD panel

Check I/F board

Check SW board JP1 Check inverter Check I/F board

Check power LED

Check display resolution Check inverter

Check I/F board CN1 Check LCD cable Check I/F board CN1

Check LCD panel J1

Check I/F board

A dark picture or a picturefull of colorfullyvertical lines

Does picturedisplay

Back-lightOn or off?

RGB SIGNAL ERROR

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YES

YES

NO

YES

START

CHECK+5V,+2.5VDD,+3.3V_DVDD PNL_VCC

END

CHECK POWER CKT(12V,+5V &+3.3V&+2.5V CKT)

POWER CKT

POWER CKT

YES

YES

NO

NO

OK

YES

Check U2 O/P Data TO gm2121 CKT

INPUT CKT

CHECK I/P R,G & B Video,HSYNC(pin 101),VSYNC(pin 100)

U5 to U2 Signal

START

CHECK Flash memory U5 CKT,D_SUB connector And U6(74LVC14)

INPUT CKT

REPLACE U6


YES

NO

NO

YES

YES

OK

FLASH MEMORY CKT START

FLASH MEMORY CKT

CHECK U3 RESET(pin 2),X1 (14.318MHZ ) SIGNAL

CCHECK U5 (pin2~12

,23,25~29) ADDRESS ; (pin13~15,17~21) DATA

SIGNAL

END

CHECK U5 OR REPLACE

YES

YES

YES

NO

NO

OK

GM2121 CKTSTART

END

REPLACE U4

CHECK U2 RXE3+ , RXE3- , RXE2+ ,RXE2- , RXE1+ , RXE1- , RXEC+ , RXEC-

CHECK U4 I2C SIGNAL

CHECK U6 INPUT

CHECK FLASH MEMORYINPUT & H&V BUFFERCKT

And RXO3+ , RXO3- , RXO2+ , RXO2- ,RXO1+ , RXO1- , RXO0+ , RXO0- , RXOC+, RXOC-

GM2121 CKT


YES

YES

OK YES

NO

YES

NO

OK

OSD CKT

END

CHECK OSDCABLE

CHECK U2 PIN8,9,13,16,33

STARTOSD CKT

CHECK OSD SWITCHS1~S8 CKT

REPLACE U2REPLACE OSD SWITCH

YES

YES

NO

YES

START

CHECK PNL_VCC,FB2 END

CHECK POWER CKT+5V

PANEL POWER CKT

PANEL POWER CKT

MENU/KEYGPIO17(pin 13)UP/KEYGPIO16(pin 9)SELECT/KEYGPIO22(pin 8)DOWN/KEYGPIO21(pin 16)POWER/KEY GPIO9(pin 33)


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MENU/KEY GPIO17(pin 13) UP/KEY GPIO16(pin 9) SELECT/KEY GPIO22(pin 8) DOWN/KEY GPIO21(pin 16) POWER/KEY GPIO9 (pin 33)

Item ViewSonic P/N Ref. P/N Description Location Q'ty1 B-IF-0222-0046 DPWBN5415T8---A I/F BOARD I/F BOARD 12 A-AD-0114-0146 RUNTP5459T8---- AC/DC ADAPTER AC/DC ADAPTER 13 A-VC-0101-0253 QCODS1492T8D--A VGA CABLE 1.8M VGA CABLE 1.8M 1

4 A-PC-0106-0180 QACC-1126D8D--- AC POWER CORD 1.8M AC POWER CORD 1.8M 1

5 A-PC-0106-0181 QACC-1228T8D-F- AC POWER CORD 1.8 EU AC POWER CORD 1.8 EU 16 C-BS-0303-0299 GSTN-2870D8F--A BASE BASE 17 M-MS-0808-8124 MHNGM0019D8---- HINGE HINGE 18 M-MS-0808-8901 LANGF2052D8---A BASE PLATE BASE PLATE 19 C-FP-0301-0912 GCABA2301D8F--B FRONT BEZEL FRONT BEZEL 1

10 C-BC-0302-0414 GCABB1734D8F--A BACK BEZEL BACK BEZEL 111 PL-NB-0707-0214 JKNBP2309D8F--A SWITCH KNOB SWITCH KNOB 1

12 M-CV-0830-2476 GCOVD2390D8F--- VIEWSONIC LOGO PLATE VIEWSONIC LOGO PLATE 113 M-CV-0830-2300 GCOVD2402D8F--A REAR COVER REAR COVER 114 M-MS-0808-8122 LANGF2051D8---- D-SUB BRACKET D-SUB BRACKET 115 M-MS-0808-6478 HBDGA1724D8---- VIEWSONIC LOGO VIEWSONIC LOGO 116 M-MS-0808-8126 PISLV0205D8---A DECORATION PLATE DECORATION PLATE 117 M-MS-0808-8125 PGAD-1009D8---- MOVABLE BUSHING MOVABLE BUSHING 1

18 P-FM-0602-0798 SPAKA6503D8F--- EPS PAD EPS PAD 119 P-BX-0601-0747 SPAKC3406D8---A CARTON CARTON 120 M-LCD-0826-0137 VVLM170EN05--N- PANEL(17" AU) PANEL(17" AU) 121 B-SB-0221-0483 RUNTP5469T8---- INVERTER INVERTER 122 A-VC-0101-0360 QCODS1676T8---- LVDS CABLE LVDS CABLE 123 B-IF-0222-0047 DPWBN5493T8---A I/F BOARD I/F BOARD 124 M-BK-0805-0010 LANGF2086D8---D MAIN BRACKET MAIN BRACKET 125 E-FS-0410-0099 QFS-Z402F-81UAA FOUSE 4A F1 126 E-IC-0401-2901 VSISST39VF010-S CPU (39VF010-90-4C-NH) U5 127 E-IC-0401-2902 VSIGM2121-----A SCALLER GENESIS GM2121 U2 128 M-MS-0808-8902 QSOCI1636N832-- 32PIN PLCC IC SOCKET U5 129 E-X-0415-0137 RCRSL1161T8---- CRYSTAL 14.318MHZ X1 130 E-IC-0401-2659 VSI24C16BP3---- EEPROM U4 131 M-FC-0809-0792 QCNCP1962T8---- Connector 30 PIN,FI-SE30P-HF CN1 132 A-CD-VA720-2 DDSKC0025T8---C CD DRIVER CD DRIVER 1

Recommended Spare Parts List VA720-2



Item ViewSonic P/N Ref. P/N Description Location Q'ty1 C-BS-0303-0299 GSTN-2870D8F--A SPRAY PAINT SPRAY PAINT 1PCS2 M-MS-0808-8124 MHNGM0019D8---- HINGE HINGE 1PCS3 M-MS-0808-8901 LANGF2052D8---A BASE PLATE BASE PLATE 1PCS4 M-SCW-0824-6737 XESSD30P06000-- BASE PLATE/BASE*5 BASE PLATE/BASE*5 5PCS5 M-SCW-0824-6736 XBSSD40P12000-- BASE PLATE/HINGE*4, BASE PLATE/HINGE*4, 4PCS6 M-MS-0808-7678 GLEGG1460D8F--- RUBBER LEG RUBBER LEG 4PCS7 B-IF-0222-0046 DPWBN5415T8---A SW BOARD SW BOARD 1SET8 M-WR-0828-0660 QCNWS0906T8010- INVERTER WIRE INVERTER WIRE 1PCS9 M-MS-0808-8131 QCNWS0908T8006- OSD WIRE OSD WIRE 1PCS

10 #N/A TLABZ4916T8---- INVERTER LABEL INVERTER LABEL 1PCS11 C-FP-0301-0912 GCABA2301D8F--B CAB-A CAB-A 1PCS12 C-BC-0302-0414 GCABB1734D8F--A SPRAY PAINT SPRAY PAINT 1PCS13 PL-NB-0707-0214 JKNBP2309D8F--A KNOB KNOB 1PCS14 M-CV-0830-2476 GCOVD2390D8F--- LOGO PLATE LOGO PLATE 1PCS15 M-CV-0830-2300 GCOVD2402D8F--A SPRAY PAINT SPRAY PAINT 1PCS16 M-MS-0808-8122 LANGF2051D8---- D_SUB BRACKET D_SUB BRACKET 1PCS17 M-MS-0808-8128 PSLDM6443D8---- SHIELD CASE(INVERTER BOARD) SHIELD CASE(INVERTER BOARD) 1PCS18 M-SCW-0824-6804 XEASD30P06000-- FOR MAIN BRACKET*12 FOR MAIN BRACKET*12 12PCS19 M-SCW-0824-6738 XEPSN26P06000-- KEY BOARD/CAB-A*3 KEY BOARD/CAB-A*3 3PCS20 M-SCW-0824-6734 XEPSB40P12000-- INSTEAD OF ABOVE SCREW INSTEAD OF ABOVE SCREW 2PCS21 M-SCW-0824-6733 XBMSD30P06000-- INVERTER*2,I/F*5,D-SUB*3 INVERTER*2,I/F*5,D-SUB*3 10PCS22 M-SCW-0824-6812 XEASD30P12TV0-- HINGE*2 HINGE*2 2PCS23 M-SCW-0824-6739 XBMSD40P08TV0-- MHNGM0019*4 MHNGM0019*4 4PCS24 M-MS-0808-5840 LBOSM1069D8---- BOSS FOR VGA CONNECTOR BOSS FOR VGA CONNECTOR 2PCS25 M-MS-0808-9174 HDECP1929D8F--- LENS LENS 1PCS26 M-MS-0808-6478 HBDGA1724D8---- VS LOGO VS LOGO 1PCS27 M-MS-0808-9179 PISL-1243D8---- MYLAR FOR INVERTER MYLAR FOR INVERTER 1PCS28 M-MS-0808-8126 PISLV0205D8---A DECORATION PLATE DECORATION PLATE 1PCS29 M-BK-0805-0012 LANGF2063D8---A KENSINGTON BRACKET KENSINGTON BRACKET 1PCS30 M-SCW-0824-6740 XBMSD30P04000-- INVERTER SHIELD*4 INVERTER SHIELD*4 4PCS31 #N/A PISLS1182D8---- PC PLATE PC PLATE 2PCS32 #N/A ZADHSDNJ-LK---- ADHESIVE ADHESIVE 0.5G33 #N/A ZTAPEN018D030U- TYPE 0.05M*3,0.1*1 TYPE 0.05M*3,0.1*1 0.25M34 #N/A CPWBVA720T8ACEB 6BIT A MINUS PANEL (17"AU) 6BIT A MINUS PANEL (17"AU) 1PCS35 #N/A CPWBGA720T8ACEB 6BIT A MINUS PANEL (17"AU) 6BIT A MINUS PANEL (17"AU) 1PCS36 A-AD-0114-0146 RUNTP5459T8---- AC/AD ADAPTER(HJC 4A 1.65) AC/AD ADAPTER(HJC 4A 1.65) 1PCS37 #N/A TLAB-5428T8---A MODEL LABEL MODEL LABEL 1PCS38 A-PC-0106-0181 QACC-1228T8D-F- AC POWER CORD EU 1.8M BLACK AC POWER CORD EU 1.8M BLACK 1PCS39 A-VC-0101-0253 QCODS1492T8D--A VGA CABLE 1.8M FOR PC99 VGA CABLE 1.8M FOR PC99 1PCS40 A-PC-0106-0180 QACC-1126D8D--- AC POWER CORD(1.8M)USA AC POWER CORD(1.8M)USA 1PCS41 M-LB-0813-0527 TLABZ3903D8---- UPC LABEL UPC LABEL 1PCS42 #N/A TLAB-5429T8---- S/N LABEL S/N LABEL 1PCS43 #N/A TINSE2901T8---A USER'S MANUAL USER'S MANUAL 1PCS44 #N/A TCAD-1303T8---- COLOR DOCVMENT COLOR DOCVMENT 1PCS45 #N/A TLAB-5430T8---- STAND LABEL STAND LABEL 1PCS46 #N/A TLAB-5434T8---- 2 WORD LABEL 2 WORD LABEL 1PCS47 P-FM-0602-0798 SPAKA6503D8F--- EPS PAD EPS PAD 1PCS48 P-BX-0601-0747 SPAKC3406D8---A CARTON CARTON 1PCS49 M-MS-0808-9180 SSAKH1356D8-T-- SET BAG SET BAG 1PCS50 #N/A SPAKW1155D8---C PALLET (981X1143) PALLET (981X1143) 0.0179PCS51 #N/A SPAKK6273D8---- CORNER PAPER CORNER PAPER 0.0714PCS52 M-MS-0808-5875 SPAKK1703T8Z--- CORNER PAPER (50X50X120)T CORNER PAPER (50X50X120)T 0.0714PCS53 #N/A SPAKK6322D8---- CORNER PAPER (50X50X1000)T CORNER PAPER (50X50X1000)T 0.0357PCS54 #N/A SPAKK6346D8---- CORRUGATED BOARD (980X1140)TB CORRUGATED BOARD (980X1140)TB 0.0357M55 #N/A SPAKK6357D8---- CORNER PAPER (50X50X2200)V CORNER PAPER (50X50X2200)V 0.0714MM56 #N/A ZSHETVR02X510-- WRAP SHEEP WRAP SHEEP 1.35M57 #N/A ZSHETVR05X1220- WRAP SHEEP WRAP SHEEP 28M58 #N/A ZTIE-P155Y1800- PACKING STAP PACKING STAP 0.5M59 #N/A ZTAPEQ019T040-- TAPE 50MM*1 TAPE 50MM*1 0.1PCS60 #N/A ZTAPEQ072T050-B TAPE 800MM*3,500MM*2 TAPE 800MM*3,500MM*2 3.4MM61 M-MS-0808-8402 PISL-1246D8---- PROTECT SHEET PROTECT SHEET 1PCS

MODEL: DPWBN5493T8---A(FOR MAIN BOARD)1 E-C-0404-3972 VCEACU1CH477M-P E,Capacitor,470UF/16V C68,69 (470UF/16V) 2PCS2 #N/A VCEACU1CG477M-P E,Capacitor,470UF/16V SECOND SOURCE 2PCS3 E-IC-0401-2659 VSI24C16BP3---- EEPROM,IC 24C16BP3 U4 1PCS4 #N/A VSI24C16ADP01-- EEPROM,IC 24C16ADP SECOND SOURCE 1PCS5 E-IC-0401-2660 VSI24WC16P----- EEPROM,IC CAT24WC16P SECOND SOURCE 1PCS6 E-IC-0401-2584 VSI24C16------- EEPROM,IC 24C16 SECOND SOURCE 1PCS7 E-IC-0401-2137 VSI24C21------- EEPROM,IC 24C21 U12 1PCS8 E-IC-0401-2287 VSI24LC21A-SN-A EEPROM,IC AT24C21-10C SECOND SOURCE 1PCS9 #N/A VSI24LCS21A---- EEPROM,IC 24LC21 SECOND SOURCE 1PCS

10 #N/A VCNCP0906REJST- Connector 6PIN JP3 (INVERTER CON) 1PCS11 #N/A VCNCP0908REJST- Connector 8PIN CN4 (OSD CON) 1PCS12 #N/A QCNCD1175T8---- VGA Connector (DB-15) CN3 (DB-15) 1PCS13 E-X-0415-0137 RCRSL1161T8---- OSC(14.318 MHZ) X1 (NTK 14.318MHZ) 1PCS14 #N/A RCRSL1154T8---- OSC(14.318 MHZ) SECOND SOURCE 1PCS

BOM LIST FOR VA720-2


Item ViewSonic P/N Ref. P/N Description Location Q'ty15 #N/A RCRSL1088T8---- OSC(14.318 MHZ) SECOND SOURCE 1PCS16 E-X-0415-0139 RCRSL1255T8---- OSC(14.318 MHZ) SECOND SOURCE 1PCS17 #N/A RCHOL1098T8640- CHOKE 64UH L1 1PCS18 #N/A RCHOL1100T8640- CHOKE 64UH SECOND SOURCE 1PCS19 #N/A QJAKD1018T8D--- POWER JACK JP2 1PCS20 #N/A VCEACU1CG337M-P E,Capacitor,330UF/16V C13, (330UF/16V) 1PCS21 #N/A VCEATU1CH107M5- E,Capacitor,100UF/16V C1,11,14,23,30,36,60,75,78,80,82,112 12PCS22 B-SB-0221-0505 TLAB-3547T8---- PWB LABEL PWB LABEL 1PCS23 E-IC-0401-2901 VSISST39VF010-S MCU IC,39VF010-90-4C-NH U5 (39VF010-90-4C-NH) 1PCS24 #N/A VSI39LV010-70-A MCU IC,39LVF010-70 SECOND SOURCE 1PCS25 #N/A TLAB-5522T8---- BIOS LABEL BIOS LABEL 1PCS26 #N/A QPWB-5493T8---D BARE A/D BOARD BARE A/D BOARD 1PCS27 M-MS-0808-8902 QSOCI1636N832-- IC SOCKET 32 PIN,PLCC-32,FRANCON ELEC U5 1PCS28 #N/A QSOCI1644T832-- IC SOCKET 32 PIN,PLCC-32,FRANCON ELEC SECOND SOURCE (FCN) 1PCS29 #N/A VSDAN202UT106-A DUAL DIODE ,DAN202 D21 1PCS30 #N/A VSDBAV99------A DIODE,BAV99(75V/4NS/250mW) D1,2,3,8,9,10,11 7PCS31 #N/A VSDBAV99A-----A DIODE,BAV99A(75V/4NS/250mW) SECOND SOURCE 7PCS32 #N/A VSDLYBAV99----A DIODE,LYBAV99(75V/4NS/250mW) SECOND SOURCE 7PCS33 #N/A VSDBAV99------A DIODE,BAV99(75V/4NS/250mW) D12,13,14, 3PCS34 #N/A VSDBAV99A-----A DIODE,BAV99A(75V/4NS/250mW) SECOND SOURCE 3PCS35 #N/A VSDLYBAV99----A DIODE,LYBAV99(75V/4NS/250mW) SECOND SOURCE 3PCS36 #N/A VSDLYSS32-----A Barrier rectifier,LYSS32 D4 1PCS37 #N/A VSDLYSS24-----A Barrier rectifier,LYSS24 SECOND SOURCE 1PCS38 #N/A VSDSS22-------A Barrier rectifier,DSS22 SECOND SOURCE 1PCS39 #N/A VSDSS24-------A Barrier rectifier,DSS24 SECOND SOURCE 1PCS40 #N/A VSDSK22-------A Barrier rectifier,DSK22 SECOND SOURCE 1PCS41 #N/A VSDSK24-------A Barrier rectifier,DSK24 SECOND SOURCE 1PCS42 #N/A VSDSS34-------A Barrier rectifier,DSS34 SECOND SOURCE 1PCS43 #N/A VSDSS34----GI-A Barrier rectifier,DSS34GI SECOND SOURCE 1PCS44 #N/A VSDSM340A-----A Barrier rectifier,DSM340A SECOND SOURCE 1PCS45 #N/A VSDB340A------A Barrier rectifier,DB340A SECOND SOURCE 1PCS46 #N/A VSZRLZ5.6B----A ZENER DIODE,5.6V ZD1,2,3,4,5,6, 6PCS47 #N/A VSZMMDZ5232B--A ZENER DIODE,5.6V SECOND SOURCE 6PCS48 E-IC-0401-2118 VSIAIC1084-33-A Power Regulator 3.3V IC AIC1084-33 U8 1PCS49 #N/A VSIAPL1084-33-A Power Regulator 3.3V IC APL1084-33 SECOND SOURCE 1PCS50 #N/A VSIRT9171-33--A Power Regulator 3.3V IC RT9171-33 SECOND SOURCE 1PCS51 #N/A VSIPJ1084CM-33A Power Regulator 3.3V IC PJ1084CM-33 SECOND SOURCE 1PCS52 #N/A VSILM2596S-5--- Power Regulator IC LM2596S-5 U7 (PWM IC) 1PCS53 E-IC-0401-2898 VSIAP1501-5K5-A Power Regulator IC AP1501-5K5 SECOND SOURCE 1PCS54 #N/A VSISI9433DY---A MOSFET,SI9433DY U1, 1PCS55 #N/A VSIFDS4435----A MOSFET,FDS4435 SECOND SOURCE 1PCS56 #N/A VSICEM4435----A MOSFET,CEM4435 SECOND SOURCE 1PCS57 #N/A VSICEM9433----A MOSFET,CEM9433 SECOND SOURCE 1PCS58 #N/A VSISI4435DY---A MOSFET,SI4435DY SECOND SOURCE 1PCS59 #N/A VSIAP4435M----A MOSFET,AP4435M SECOND SOURCE 1PCS60 #N/A VSIAO4411-----A MOSFET,A04411 SECOND SOURCE 1PCS61 #N/A VSISI9435DY---A Power PMOSFET IC SI9435DY SECOND SOURCE 1PCS62 #N/A VSICEM9435----A Power PMOSFET IC CEM9435 SECOND SOURCE 1PCS63 #N/A VSISDM9435A---A Power PMOSFET IC SDM9435A SECOND SOURCE 1PCS64 #N/A VSISI4435DYTR-A Power PMOSFET IC SI4435DYTR SECOND SOURCE 1PCS65 #N/A VSISN74LV14A--A INVERTER Gate IC SN74LV14A U6 1PCS66 #N/A VST2N3904-----A Transistor,2N3904,(NPN T.R VCEO=40VAC) Q1,2,3, 3PCS67 #N/A VSTMMBT3904T-MA Transistor,MMBT3904T,(NPN T.R VCEO=40VAC) SECOND SOURCE 3PCS68 #N/A VSTMMBT3904LT-A Transistor,MMBT3904LT,(NPN T.R VCEO=40VAC) SECOND SOURCE 3PCS69 #N/A VST2N3906-----A Transistor,2N3906,(PNP T.R VCEO=40VAC) Q4,5, 2PCS70 M-FC-0809-0792 QCNCP1962T8---- Connector 30 PIN,FI-SE30P-HF CN1 (FI-SE30P-HF) 1PCS71 #N/A QCNCP1979T8---- Connector 30 PIN,FI-S30P-HF SECOND SOURCE 1PCS72 E-FS-0410-0099 QFS-Z402F-81UAA FUSE, 4A/125V F1 1PCS73 #N/A VSIMIC811MU---A RESET IC,MIC811MU U3 (RESET IC) 1PCS74 #N/A VSIMAX811-----A RESET IC,MAX811 SECOND SOURCE 1PCS75 #N/A VSIADM811-----A RESET IC,ADM811 SECOND SOURCE 1PCS76 #N/A VSIIMP811LEUS-A RESET IC,IMP811LEUS SECOND SOURCE 1PCS77 #N/A VSIAME8815BEG-A LDO Regulator IC 5V/2.5V,AME8815BEG U9 1PCS78 #N/A VSIRC1117S25--A LDO Regulator IC 5V/2.5V,RC1117S25 SECOND SOURCE 1PCS79 #N/A VSIRT9164-25--A LDO Regulator IC 5V/2.5V,RT9164-25 SECOND SOURCE 1PCS80 #N/A VSIAPL1117-25-A LDO Regulator IC 5V/2.5V,APL1117-25 SECOND SOURCE 1PCS81 E-IC-0401-2902 VSIGM2121-----A GENESIS SCALER ,GM2121 U2 (SCALER) 1PCS82 #N/A VSDDL4001-----A DIODE,DL4001 D17 1PCS83 #N/A VSDM1---------A DIODE,M1 SECOND SOURCE 1PCS84 #N/A VSDSM4001A----A DIODE,SM4001A SECOND SOURCE 1PCS85 #N/A VRMDNVG--000J-A Resistor,SMT,0603,0Ω,±5%,1/16W R34,35,40,45,84,94 6PCS86 #N/A VRMDNVG--101J-A Resistor,SMT,0603,100Ω,±5%,1/16W R21,24,26,28,81,82,93,95 8PCS87 #N/A VRMDNVG--102J-A Resistor,SMT,0603,1KΩ,±5%,1/16W R38,39,41,44, 4PCS88 #N/A VRMDNVG--103J-A Resistor,SMT,0603,10KΩ,±5%,1/16W R12,13,20,22,29,30,78,79,90,91,92 11PCS89 #N/A VRMDNVG--181J-A Resistor,SMT,0603,180Ω,±5%,1/16W R9,10,11 3PCS90 #N/A VRMDNVG--201J-A Resistor,SMT,0603,200KΩ,±5%,1/16W R3 1PCS91 #N/A VRMDNVG--202J-A Resistor,SMT,0603,2KΩ,±5%,1/16W R4,15,17,46, 4PCS92 #N/A VRMDNVG--222J-A Resistor,SMT,0603,2.2KΩ,±5%,1/16W R36,37, 2PCS93 #N/A VRMDNVG--330J-A Resistor,SMT,0603,33Ω,±5%,1/16W R5,6,7,8,16 5PCS94 #N/A VRMDNVG--331J-A ResistorSMT,0603,330Ω,±5%,1/16W R43 1PCS


Item ViewSonic P/N Ref. P/N Description Location Q'ty95 #N/A VRMDNVG--472J-A Resistor,SMT,0603,4.7KΩ,±5%,1/16W R1, 1PCS96 #N/A VRMDNVG--471J-A Resistor,SMT,0603,470Ω,±5%,1/16W R49,50 2PCS97 #N/A VRMDNVG--750J-A Resistor,SMT,0603,75Ω,±5%,1/16W R31,32,33 3PCS98 #N/A VCLFHN1HG104Z-A Capacitor,SMT,0603,50V,0.1U C2,3,4,5,6,7,8,9,12,15, 10PCS99 #N/A VCLFHN1HG104Z-A Capacitor,SMT,0603,50V,0.1U C16,17,18,19,20,24,25,26,27,28, 10PCS100 #N/A VCLFHN1HG104Z-A Capacitor,SMT,0603,50V,0.1U C29,31,32,33,34,35,37,38,42,46, 10PCS101 #N/A VCLFHN1HG104Z-A Capacitor,SMT,0603,50V,0.1U C47,49,51,61,62,67,74,76,77,81, 10PCS102 #N/A VCLFHN1HG104Z-A Capacitor,SMT,0603,50V,0.1U C83,110 2PCS103 #N/A VCICHN1HH101J-A Capacitor,SMT,0603,50V,100P C48 1PCS104 #N/A VCIRHN1HG103K-A Capacitor,SMT,0603,50V,0.01U C43,44,45,50,53,54,66,73,79 9PCS105 #N/A VCIRHN1HG103K-A Capacitor,SMT,0603,50V,0.01U C88,89,90,91,92,93,94, 7PCS106 #N/A VCICHN1HH220J-A Capacitor,SMT,0603,50V,22P C40,41 2PCS107 #N/A VCICHN1HH221J-A Capacitor,SMT,0603,50V,220P C10,21,39, 3PCS108 #N/A VCLFHN1HG473Z-A Capacitor,SMT,0805,50V,0.047U C63, 1PCS109 #N/A VCLFCN1CG105Z-A Capacitor,SMT,0805,50V,1U C72,84,85 3PCS110 #N/A VCEABN1CX106M-A E,Capacitor,10UF/16V C22,71 2PCS111 #N/A VCEABN1CX106MNA E,Capacitor,10UF/16V SECOND SOURCE 2PCS112 #N/A VCEABN1CX107M-A E,Capacitor,100UF/16V C64,65 2PCS113 #N/A VCEABN1CX107MNA E,Capacitor,100UF/16V SECOND SOURCE 2PCS114 #N/A VCEABN1CX226M-A E,Capacitor,22UF/16V C52 1PCS115 #N/A VCLFCN1EY225K-A Capacitor,SMT,0805,50V,2.2U/16V C70 1PCS116 E-L-0407-1559 RFIL-5232T8300A BEAD,100MHZ/30Ω,±25%,NBQ16080 FB8,11,13,16,18,19,20(0603) 7PCS117 E-L-0407-1559 RFIL-5232T8300A BEAD,100MHZ/30Ω,±25%,NBQ16080 FB21,22,23,27,29,,(0603) 5PCS118 #N/A RFIL-5231T8600A BEAD,100MHZ/60Ω±25% SBK201209 FB1,3,4,6,30(0805) 5PCS119 #N/A RFIL-5233T8700A BEAD,100MHZ/70Ω±25% PBY453215 FB2,5,9,10,12,28(1812) 6PCS120 #N/A RFIL-5235T8121A BEAD,100MHZ/120Ω,±25%,NBQ16080 FB31,32,33 3PCS121 #N/A RNWRB1618T8103A Resistor array,SMT,8P4R,25V,10KΩ RN1,2,3,4,6,7, 7PCS

MODEL: DPWBN5415T8---A(SW BOARD)1 #N/A QPWB-5415T8---C S/W BARE BOARD S/W BARE BOARD 1PCS2 M-SW-0815-0212 QSW-A1129D8---- SW1,2,3,4,5 SW1,2,3,4,5 5PCS3 #N/A VSPSPR-39MVWF-- LED1 LED1 1PCS4 #N/A VCNCP0908REJST- J1 J1 1PCS5 M-WR-0828-0471 QJUM-1045D8050- J2,3,4 J2,3,4 3PCS6 M-WR-0828-0473 QJUM-1045D8100- J5 J5 1PCS7 B-SB-0221-0505 TLAB-3547T8---- PWB LABEL PWB LABEL 1PCS

MODEL: CPWBGA720T8ACEB1 M-LCD-0826-0137 VVLM170EN05--N- 6BIT A MINUS PANEL(17"AU) 6BIT A MINUS PANEL(17"AU) 1SET2 B-SB-0221-0483 RUNTP5469T8---- FOR AU 17" SIDE MOUNT INVERTER FOR AU 17" SIDE MOUNT INVERTER 1PCS3 B-IF-0222-0047 DPWBN5493T8---A I/F BOARD (FOR GENESS) I/F BOARD (FOR GENESS) 1SET4 A-VC-0101-0360 QCODS1676T8---- LVDS CABLE LVDS CABLE 1PCS5 #N/A DDSKC0025T8---C CD DRIVER CD DRIVER 1PCS6 M-BK-0805-0010 LANGF2086D8---D MAIN BRACKET MAIN BRACKET 1PCS7 M-SCW-0824-0809 LX-BZ1559N8---- PANEL FIX*6, PANEL FIX*6, 6PCS8 M-MS-0808-8944 PSLDM6500D8---- SHIELD CASE FOR I/F BOARD SHIELD CASE FOR I/F BOARD 1PCS9 M-BK-0805-0053 LANGF2066D8---- BRACKET(MAIN-SUB) BRACKET(MAIN-SUB) 1PCS

10 M-SCW-0824-6733 XBMSD30P06000-- FOR LANGF2066/2086C*4,GROUND*1 FOR LANGF2066/2086C*4,GROUND*1 5PCS11 M-SCW-0824-6740 XBMSD30P04000-- I/F SHIELD CASE I/F SHIELD CASE 9PCS12 #N/A ZTAPEL025S030-- TAPE 50MM*1,60MM*1,70MM*1,200MM*2 TAPE 50MM*1,60MM*1,70MM*1,200MM*2 580MM13 #N/A ZTAPEY020W066U- TAPE FOR CORE FIXING TAPE FOR CORE FIXING 70MM14 #N/A PRDAA6380D8---- HEATSINK HEATSINK 1PCS


1

2

34

5

10

7

9

12*4

21

20

19

18

15

16

11

13

814

6

17

22

23

24

25

26

27

28

2930

3226

29

25

24

31

(AU side mount panel)

33

EXPLODED DRAWING FOR VA720-2

8. Exploded Diagram And Spare Parts List


LuAn

12

3

4

5 67 8

9

2

PACKING METHOD


Item ViewSonic P/N Ref. P/N Description Q'TY1 C-FP-0301-0912 GCABA2301D8F--B FRONT COVER 12 M-MS-0808-9174 HDECP1929D8F--- LENS 13 PL-NB-0707-0170 JKNBP2309D8F--- FUNCTION KNOB 14 B-IF-0222-0046 DPWBN5415T8---A FUNCTION PCB 15 M-BK-0805-0062 LANGF2086D8---E MAIN BRACKET 16 M-BK-0805-0053 LANGF2066D8---- BRACKET(MAIN-SUB) 17 C-BS-0303-0299 GSTN-2870D8F--A BASE 18 M-MS-0808-8124 MHNGM0019D8---- HINGE 19 M-MS-0808-8901 LANGF2052D8---A BASE PLATE 1

10 B-SB-0221-0483 RUNTP5469T8---- INVERTER PCB 111 M-MS-0808-8128 PSLDM6443D8---- SHIELD CASE(INVERTER BOARD) 112 M-MS-0808-7678 GLEGG1460D8F--- RUBBER LEG 413 M-MS-0808-8122 LANGF2051D8---- D-SUB BRACKET 114 M-MS-0808-9205 PISLV0205D8---B DECORATION PLATE 115 M-MS-0808-8944 PSLDM6500D8---- SHIELD CASE(I/F BOARD) 116 B-IF-0222-0047 DPWBN5493T8---A I/F BOARD 117 M-LCD-0826-0137 VVLM170EN05--N- AU PANEL 118 M-BK-0805-0012 LANGF2063D8---A KENSINGTON BRACKET 119 C-BC-0302-0414 GCABB1734D8F--A REAR COVER 120 M-CV-0830-2476 GCOVD2390D8F--- LOGO COVER 121 M-CV-0830-2300 GCOVD2402D8F--A HINGE COVER 122 M-MS-0808-6478 HBDGA1724D8---- BIRD PLATE 123 M-SCW-0824-6804 XEASD30P06000-- SCREW(BRAZIER HEAD-3*6-Bronze) 1124 M-SCW-0824-6740 XBMSD30P04000-- SCREW(ROUND HEAD-M3*4-Bronze) 1425 M-SCW-0824-0809 LX-BZ1559N8---- SPECIAL SCREW M3*4 Nickle 626 M-SCW-0824-6733 XBMSD30P06000-- SCREW(ROUND HEAD-M3*6-Bronze) 1427 M-SCW-0824-6738 XEPSN26P06000-- SCREW(PAN HEAD-2.6*6-Nickle) 328 M-SCW-0824-6739 XBMSD40P08TV0-- SCREW(ROUND HEAD-Washer-M4*8-Bronze) 429 M-SCW-0824-6737 XESSD30P06000-- SCREW(FLAT HEAD-3*6-Bronze) 530 M-SCW-0824-6736 XBSSD40P12000-- SCREW(FLAT HEAD-4*12-Bronze) 431 M-SCW-0824-6734 XEPSB40P12000-- SCREW(PAN HEAD-4*12-Black) 232 M-MS-0808-5840 LBOSM1069D8---- HEX-ROD FOR VGA CONNECTOR 233 M-SCW-0824-0810 XEPSD30P08TV0-- SCREW(PAN HEAD-Washer-3*8-Bronze) 1

VA720-2 Exploded Parts List


9.BLOCK DIAGRAM

FROM A/D ADAPTOR

CON1

JP7

SW BOARD DPWBN5415T8---A

17” LCD PANEL

INVERTER RUNTP5469T8----

FLASH (U5)

SCALER GM2121 (U2)

CN1 30 PIN LVDS CABEL

DDC EPROM 24C21A (U12)

JP3 TO

INVERTER

CN4

CON1 C O N 3

C O N 2

C 0 N1

INTERFACE BOARD(DPWBN5493T8---A) COMPUTER GRAPHIC 12V 2.5V 5V

CN3 (DB15)

JP2 SWITCH MODE POWER SUPPLY


5

5

4

4

3

3

2

2

1

1

D

D

C

C

B

B

A

A

FULL CUSTPBIAS_POL

OCM-STARTDDC_PORT_SEL

GPROBEGM2121

[PD/AUDIO][MUTE/AUDIO]

[VOLUME/AUDIO]

[BLON/OFF]

[BRI_ADJ/BL]

[POWER/AUDIO]

文字面標示3.3V 12V於JP1

NC

NC

NC

NC

NC

RMADDDR8 PULL 於REV:B拉掉,避免ISP no work.

於rev:b更改isp功能pin,使isp能work

REV:A改至REV:B RN4.6->RN7.7;RN4.5->RN7.6;RN7.6->RN7.5 ;RN7.5->RN4.8;RN4.8->RN4.7;RN4.7->RN4.6;RN4.5->空腳位.

REV:A至REV:B GROUNDPLANE於RGB信號進入SCALER之前割.

REV:A改至REV:B GPIO 7,8 獨立處理LED亮燈問題

CN3於REV:B更改PITCH

VERY CLOSE TO VGA (DB-15 INPUT),REV:C remodify

VERY CLOSE TO VGA (DB-15 INPUT),REV:C remodify

remodify rev:C

remodify rev:C

REV:Dremodify100uF

REV:Dremodify100uF

REV:Dremodify100uF/DIP

REV:Dremodify100uF

REV:Dremodify100uF

REV:Dremodify100uF

REV:D remodify FB3

REV:D remodify TWOSOURCE

Title

HDATA2

PNLV

PNLON/OFF

PNLCTRL

BLUE+GREEN+RED+R+/

R-G-B-

VGA_CON

B+

R+G+

A-VS

VS-AIN

R++

A-HS VS-INHS-IN

FL5V

PNLC

GPO 0

GPIO 6GPIO 9

GPIO 10ROM_WEn

GPIO 2GPIO 1

GPIO 0

RXO1-

/RESET

RXO1+

RXO3-

RXEC-RXE3-

RMADDR8

RMADDR13

RXEC+

RMADDR9

GPO 2

RMDATA3

GREEN-

RXE2-

RMADDR3

RXOC+

RXE1-

RXO2+RXOC-

RMDATA2

GPIO 6

RMADDR8

PNLON/OFF

ROM_OEn

GPO 0

RMDATA5

RMADDR15

GPIO 17

BLUE+

RXO2+

RMADDR12

RMADDR6

SDA

TCLK

GREEN+

RMADDR[0..15]

RMADDR14

RMADDR7

GPO 1

RXOC+

RXE3+RXEC+

RXE2-

RED+

RXE0+RXE0-

RMDATA4

RMADDR5

RMADDR14

RMADDR0

RMADDR5

RXO1+

ROM_WEn

RMADDR10

RMADDR2GPIO 2

BLUE-

RMADDR11

RMADDR1

RXO0-

RMADDR9

RMADDR0

RED-

HDATA1

RXO1-

RMDATA7

RMADDR6RMADDR4

RMADDR1

RXE3+

RMADDR11

RMDATA0

VGA_DETGPIO 1

RXEC-

RMADDR2

RMADDR10

RXO3+

RXE1+

RMDATA6

GPIO 8

RXE[0..3];RXO[0..3]

RMADDR15

RXE1+

RXOC-

RXO0+

RXE2+

RXE0+

UART_DI

RXO2-

SCL

RXO0-

RMADDR15

RMADDR9

RXE3-

RXO3+

RMADDR7

UART_DO

GPIO 0

XTAL

RXO2-

RXO3-

RXE2+

RMDATA1

RMADDR3

RXE0-

RXO0+

VGA_DET

RXE1-

GPO 2

PBIASPPWR

GPIO 20

GPIO 10RMADDR13RMADDR14

GPIO 9

GPO 1

GPIO 14

RMADDR12GPIO 21

PBIASPPWR

GPIO 7

GPIO 15

GPIO 16GPIO 22

RMADDR8GPIO 16GPIO 22HDATA2

HDATA1GPIO 17GPIO 21

GPIO 7GPIO 8

G++

B+G+R+

G+/B++ B+/

HS-AIN

RMADDR4

3.3V_AVDD

GND

2.5V_AVDD_LV

2.5V_VDD

+5V

+2.5V_VDD

GND

3.3V_DVDD

GND

GND2.5V_AVDD

+3.3V_DVDD

+5V

GND GND

+5V

GND

GND

GND

+5V

GND

GNDGND

2.5V_AVDD

+5V

+5V

+5V +12V +3.3V_DVDD

GND

GND

GND

PNL_VCC

GND GNDGND

GND

+DDC5V

GND GND GND

+5V

+3.3V_DVDD

+3.3V_DVDD

GND GND

+3.3V_DVDD

GND

GND

GND GND GNDGND GND

+5V

GND

3.3V_DVDD

PNL_VCC

GNDGNDGND

2.5V_VDD

3.3V_AVD

GND

2.5V_AVDD_LV

3.3V_DVDD

3.3V_AVD

GND

GND

GND

GND

GND GND GND

GND

GND GND

GND

+5V

GNDGND GND GNDGND GND

GNDGND GND GND

GND

3.3V_AVD

3.3V_AVDD+3.3V_DVDD

3.3V_AVDD

R32

75

R35 100

Q1MMBT3904L

C

B

E

R95 100

U1

SI4433ADY

1234

8765

S1S2S3G1

D1D2D3D4

C21220pF

RN4 4x10K1234 5

678

R1

4.7K

R33

75

CN21234

U5

PLCC-32

329284

2523262756789

101112

2120191817151413

24

31

32

1

16

230

22

A15A14A13A12A11A10A9A8A7A6A5A4A3A2A1A0

DQ7DQ6DQ5DQ4DQ3DQ2DQ1DQ0

OE

WE

VCC

NC

GND

A16NC/A17

CE

R11100

R2910K

R31

75

RN2 4x10K1234 5

678

R3010K

R362.2K

C340.1uF

C150.1uF

C44 0.01uF

ZD55.6V

AC

C45 0.01uF

C80.1uF

R1310K

R10100

RN6 4x10K1234 5

678

C36100uF/DIP

C460.1uF

FB3 60/100M(0805)

R25

NR

CN3

DB15 HD

16

27

38

49

5

11

12

13

14

1510 C49

0.1uF

C310.1uF

C55

10pF

R8 33

C250.1uF

C190.1uF

C56

10pF

SCALER

U2

gm2121

135134131130127126

103102

23242526

2728

2932

34

62

3637

61

1011121398

17

16

1819

33

22

38

156155154153152151150149

148

139

654321

160159

140141

147

145146

142

7

119117

129133

125122121

14 30 143

113

20 43 79 98

4041

106

104

105

115

110

101100

15 21 31 44107

91 99 137

120118

114

116

111

35

123

59

60

63

58

5756555453

504948

47

46

45

5152

78

39

112

128132136124

90 157

158

138

64656667686970717273

74

7576

77

108

109

8081828384858687

8889929394959697

144

42

RED+RED-GREEN+GREEN-BLUE+BLUE-

XTALTCLK

GPIO0/PWM0GPIO1/PWM1GPIO2/PWM2

GPIO3/TIMER1

GPIO4/UART_DIGPIO5/UART_DO

GPIO6GPIO7

GPIO10

AVSS_OUT_LV_O

GPIO12/NVRAM_SDAGPIO13/NVRAM_SCL

AVDD_LV_E_2.5

GPIO20/HDATA3GPIO19/HDATA2GPIO18/HDATA1GPIO17/HDATA0GPIO16/HFSGPIO22/HCLK

RESETn

GPIO21/IRQn

GPIO15/DDC_SCLGPIO14/DDC_SDA

GPIO9

GPIO8/IRQINn

STI_TM1

ROM_ADDR0ROM_ADDR1ROM_ADDR2ROM_ADDR3ROM_ADDR4ROM_ADDR5ROM_ADDR6ROM_ADDR7

ROM_ADDR8

ROM_ADDR15

ROM_DATA0ROM_DATA1ROM_DATA2ROM_DATA3ROM_DATA4ROM_DATA5ROM_DATA6ROM_DATA7

ROM_ADDR14ROM_ADDR13

ROM_ADDR9

ROM_ADDR11ROM_ADDR10

ROM_ADDR12

ROM_OEn

VDD1_ADC_2.5VDD2_ADC_2.5

AGND_GREENAGND_RED

AGND_BLUEAGND_ADCSGND_ADC

RVD

D_3

.3R

VDD

_3.3

RVD

D_3

.3

AVDD_SDDS_3.3

CVD

D_2

.5C

VDD

_2.5

CVD

D_2

.5C

VDD

_2.5

PPWRPBIAS

VDD

_DPL

L_3.

3

AVDD_RPLL_3.3

AVSS_RPLL

VDD

_SD

DS_

3.3

VDD

_DD

DS_

3.3

HSYNCVSYNC

CR

VSS

CR

VSS

CR

VSS

CR

VSS

VSS_

DPL

L

CR

VSS

CR

VSS

CR

VSS

GND1_ADCGND2_ADC

AVSS_SDDS

VSS_

SDD

SVS

S_D

DD

S

GPIO11/ROM_WEn

ADC_TEST

AVDD_OUT_LV_E_2.5

AVSS_LV_E

AVDD_OUT_LV_O_2.5

AVSS_OUT_LV_E

CH0N_LV_ECH0P_LV_ECH1N_LV_ECH1P_LV_ECH2N_LV_E

CLKP_LV_ECH3N_LV_ECH3P_LV_E

AVSS_OUT_LV_E

AVDD_OUT_LV_E_2.5

VCO_LV

CLKN_LV_ECH2P_LV_E

CR

VSS

STI_TM2

VBUFC

AVDD_BLUE_3.3AVDD_GREEN_3.3AVDD_RED_3.3AVDD_ADC_3.3

RVD

D_3

.3

RVD

D_3

.3

CR

VSS

CVD

D_2

.5

CH3P_LV_OCH3N_LV_OCLKP_LV_OCLKN_LV_OCH2P_LV_OCH2N_LV_OCH1P_LV_OCH1N_LV_OCH0P_LV_OCH0N_LV_O

AVDD_OUT_LV_O_2.5

AVSS_OUT_LV_OAVSS_LV_O

AVDD_LV_O_2.5

AVDD_DDDS_3.3

AVSS_DDDS

RESERVEDRESERVEDRESERVEDRESERVEDRESERVEDRESERVEDRESERVEDRESERVED

GPO 0GPO 1GPO 2GPO 3GPO 4GPO 5GPO 6GPO 7

CR

VSS

CR

VSS

C350.1uF

FB3140/100M(0603)

C5710pF

C14100uF/DIP

C170.1uF

R27

NR

C5822pF

FB1 60/100M(0805)

U4

24LC16B

12345

678 A0

A1A2

VSSSISCKWPVCC

R5 33

C4022pF

C5922pF

R24100

C200.1uF

R3

200

FB5 70/100M(1812)

C290.1uF

R4 2K

R16 33

C10220pF

R93 100

C50 0.01uF

C20.1uF

R17 2K

ZD15.6V

AC

C120.1uF

R21 100

X1

14.318MHz

R20

10K

C510.1uF

FB7

30/1

00M

(060

3)

ZD25.6V

AC

C70.1uF

ZD45.6V

AC

U3A

DS1818-10SOT23

2

1

3

VCC

RSTN

GND

C260.1uF

C48100pF

RN3 4x10K1234 5

678

R1210K

R14 33

R92 10k

RN5 4x10K1234 5

678

C13220uF

C270.1uF

R15 2KD2

BAV99

1

3

2

C180.1uF

C53 0.01uF

C370.1uF

RN1 4x10K1234 5

678

D1BAV99

1

3

2

R26100

C11

100uF/DIP

ZD35.6V

AC

D3BAV99

1

3

2

C11110pF

C280.1uF

CN1

FI-SE30P-HF

123456789

101112131415161718192021222324252627282930

31

32

VINVINVINGNDGNDGNDRXO0-RXO0+RXO1-RXO1+RXO2-RXO2+GNDRXOC-RXOC+GNDRXO3-RXO3+RXE0-RXE0+RXE1-RXE1+GNDRXE2-RXE2+RXEC-RXEC+RXE3-RXE3+GND

GND

GND

R94 0

U3

MAX8111

23

4 GND

RESETMR

VCC

R19 33

FB30 60/100M(0805)

C30100uF/DIP

R2

N

C90.1uF

FB4 60/100M(0805)

FB3340/100M(0603)

C160.1uF

FB8

30/1

00M

(060

3)

C39220pF

R23

NR

R90

10K

R91 10kC30.1uF

R18 33

C470.1uF

U6

74LVC14

1

2

3

4

5

6

7 8

9

10

11

12

13

14A1

B1

A2

B2

A3

B3

GND B4

A4

B5

A5

B6

A6

VCC

RN7 4x10K1234 5

678

C54 0.01uF

R22

10K

C40.1uF

ZD65.6V

AC

C4122pF

R28100

C112

100uF/DIP

R6 33

FB6 60/100M(0805)

C50.1uF

FB2 70/100M(1812)

C23100uF/DIP

C420.1uF

C2210uF

C60.1uF

R7 33

R372.2K

C5222uF

FB3240/100M(0603)

C1100uF/DIP

C330.1uF

R34 100

JP1

2 31

C43 0.01uF

C380.1uF

R9100

C240.1uF

C320.1uF

RED/LED

HSYNC

DOWN/KEY

MENU/KEY

VSYNC

VSYNC

VS-IN

VGA-SDA

VGA-SCL

VOL-UP/KEY

VOL-DOWN/KEYMUTE/KEY

GPO 0

GPIO 1GPIO 0

PBIAS

GPO 2GPO 1

POWER/KEY

GREEN/LED

SELECT/KEYUP/KEY

VGA-SDAVGA-SCL

HSYNC

A-VS

10.SCHEMATIC DIAGRAMS


5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

ANALOG DDC 24C02 use R85 24C21 useR84

REV:AC95與R62文字面錯排,於REV:B修正

REV:A至REV:B POWER PLACEMENT 重新佈局

C71於REV:C更改LAYOUT TYPE

rev:C C65因機構問題,更改LAYOUTTYPE.

REV:Dremodify470uF




REV:Dremodify470uF

REV:DremodifyD17

DDC-SCL

WP

5V_VGA

DDC-SDA

FBDC-IN POWER VOUTDC-IN DC-IN+

BYPASS

RIGHT-IN

GAIN-SEL

LEFT-IN

LEFT_OUT-

MUTE/AUDIO

RIGHT-GAIN1

RIGHT_OUT+

PC-AUDIOL1

RIGHT_OUT+

LEFT_OUT+

LEFT_OUT+LEFT-DOCK

RIGHT-GAIN3RIGHT-GAIN2

AUDIOCTL

AUDIO_VOLUME

AUDIO5V

PC-A

UDIO

G

PC-AUDIOR1

BEEP-IN

RIGHT_OUT-

LEFT-GAIN1

RIGHT_OUT-

BRI_ADJ/BL

BR-2 BR-3

BL-2

BL-

1

12V-BL

BL-3

BLON/OFF

BR

I-1

PC-AUDIOR

PC-AUDIOL

LEFT-GAIN3

LEFT-GAIN2LEFT_OUT-

PD/AUDIO

AUDIO_VOLUME VOL/CT VOL/CTRL

RIGHT-DOCK

ON

/OFF

RED

GREEN

RE+

GR+

REE+

GEE+

DOWN

POWER-KEY

MENUENTERUP

POWER/AUDIO

AUDIO5VP

VOLUMTE

VOL-UPVOLDOWN

AU

DIO

-A

+DDC5V+5V

GND

GND

GND

GND

GND GND GND

+12V

GND GNDGND

GND

GND

GND GNDGND

GND

GND

+5V

+2.5V_VDD

+3.3V_DVDD

AUDIO+5VCC

AUDIO+5VCC

AUDIO+5VCC

AUDIO+5VCC

AGNDAGNDAGND

GND

AGND

AGND

AGND AGND AGND

AGND

AGND

+5V

GND GND

+5V+5V

GNDGND

+12V

AUDIO+5VCC

AGND

AGND

CGND

+5V

GND GND GND

GNDGND

AGND

+5V

GNDGND

AGNDGND

+5V+5V

GND GND

GND GND

GND

GND GND

GND

+5V

GND GNDGND GND

GND

GND GND GND GND GND GND GND

AGND

GND GNDGND

+5V

GND

GND GND

GND

GND

GND

GND

+5V+5V

Q5MMBT3906L

C

B

E

C76

0.1uF

FB9

70/100M(1812)

C94

0.01uF

C81

0.1uF

C106

220u

FC10810uF

C61

0.1uF

C65

100uF

CN4

OSD CON

4

5

6

7

8

9

10

11

1

2

3

MENU

ENTER

UP

DOWN

AMBER

GREEN

POWER

GND

VOLUP

VOLDOWN

VOLMUTE

C83

0.1uF

C75

100uF/DIP

Q8MMBT3904L

C

B

E

D11BAV99

1

3

2

R6720k

Q9MMBT3904L

C

B

E

C1040.33uF

U8 AIC1084-33

3 2

1

4VIN VOUT

GN

D

VOUT

Q6MMBT3904L

C

B

E

R66 20k/1206

R83 1k

U9 1117-2.5

3 2

1

4VIN VOUT

GN

D

VOUT

C74

0.1uF

R69 20k

U11

SI4433ADY

1234

8765

S1S2S3G1

D1D2D3D4

R6513k/1206

R77 1k

R68

20K/1206

R81 100

Q7MMBT3904L

C

B

E

D10BAV99

1

3

2

R49 680

R79

10K

D9BAV99

1

3

2

J1

PC_Audio

1

23

R47N

C100

0.068uF

D6BAV99

1

3

2

R50 680

D5BAV99

1

3

2

R57N

R72 20k

C67

0.1uF

R7420k

MTG2 THROUGH HOLE

456

7 9

10

1238

1112

R78

10K

FB1330/100M(0603)

L1 64uH/DIP

R802K

R48N

C99

0.33uF

C73

0.01uF

C63

47nF

R76 2k

FB26 70/100M(1812)

U7A

HEAT SINKA

C70

1uF

MTG5 THROUGH HOLE

456

7 9

10

1238

1112

R71

20k

C1092.2uF/0805

FB29 30/100M(0603)

R53 2k

R75

510

MTG1 THROUGH HOLE-A

1

R700

C72

1uF

D8BAV99

1

3

2

D7BAV99

1

3

2

FB16 30/100M(0603)

FB25

30(0603)

C77

0.1uF

C90

0.01uF

FB18 30/100M(0603)

R41 1K

JP3

INVERTER CON

123456

12V_BL12V_BLBRI_ADJBLON/OFFGNDGND

JP212DC-IN POWER

C87

1uF/0603

FB24

70/100M(1812)

C86

1uF/0603

FB28 70/100M(1812)

C88

0.01uF

R84

0

C78

100uF/DIPD12

BAV99

1

3

2

U10A

HEAT SINKB

C1100.1uF

FB2030/100M(0603)

C10710uF

FB1930/100M(0603)

FB1270/100M(1812)

FB1430/100M(0603)

MTG4 THROUGH HOLE

456

7 910

1238

1112

FB2130/100M(0603)

D17 1N4001(1812)1 2

D14BAV99

1

3

2

FB1130/100M(0603)

R51

10k

FB1530/100M(0603)

FB2230/100M(0603)

FB2730/100M(0603)

Q2MMBT3904L

C

B

E

C82

100uF/DIP

C102

0.1uF

FB23 30/100M(0603)

R64N

R52

10k

FB1730/100M(0603)

D13BAV99

1

3

2

C95

0.1uF

U12

24C214

8123

765GND

VCCA0A1A2

WPSCLSDA

R43 33

R54 2k

Q3MMBT3904L

C

B

E

C69

470uF

R63N

C84

1uF

R61

20K/1206

R46 2K

D4

SS34

R58 1k

C7122uF

C91

0.01uF

R60 13k/1206

D15BAV99

1

3

2

U10

LM4838

123456789

1011121314 15

16171819202122232425262728GND

ShutdownGain SelectModeMuteVddDC VolGNDRight DockRight InBeep InLeft InLeft DockGND Left Out+

VddLeft Out-

Left Gain2Left Gain1

GNDHP Sense

BypassGND

Right Gain1Right Gain2

Right Out-Vdd

Right Out+

R55 1kR56

1kC89

0.01uF

R6220K

R45

0

R731K

JP4

speaker_out

1234

R391K

U7

2596-5.0

1 2

4

5 3

+VIN VOUT

F.B

ON

/OFF

GN

D

C103

1uF/0603

C101

0.1uF

D16BAV99

1

3

2

R82 100

R381K

R40 0

C1050.1uF

C62

0.1uF

C96

0.068uF

R44 1K

C80100uF/DIP

R42N

C85

1uF

C64

100uF

FB1070/100M(1812)

C93

0.01uF

MTG3 THROUGH HOLE

456

7 9

10

1238

1112

C92

0.01uF

C68

470uF

R59 20k/1206

F1

5A

C60

100uF/DIP

Q4

MMBT3906L

C

B

E

C97

10uF/16v

R85

0

C79

0.01uF

C66

0.01uF

D21 DAN202U

321

A-VS

VGA-SCLVGA-SDA

MENU/KEY

UP/KEYSELECT/KEY

POWER/KEY

DOWN/KEY

PBIAS

GPIO 0

GPIO 1

RED/LED

GREEN/LED

GPO 0

VOL-DOWN/KEYVOL-UP/KEY

MUTE/KEY

GPO 2

GPO 1


11.PCB LAYOUT

MIN BOARD


SW BOARD


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Thank you in advance for your feedback on our Service Manual,which allows continuous improvement

of our products. We would appreciate your completion of the Assessment Matrix below, for return to ViewSonic

Corporation

8"&#""VA720-2B) !D

B!"!!.."!""B) !D

After completing this form, please return it to ViewSonic Quality Assurance

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, A

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in the USA at facsimile 1-909-839-7943. You may also e-mail any suggestions to the Director, Quality Systems & Processes([email protected])

Precautions And Safety Notices1.

8. Exploded Diagram and Spare Parts List


Adjusting Procedure

2. Specification

5.

4. Circuit Description

3.



Front Panel Function Control Description

9. Block Diagram

10. Schematic Diagrams

11. PCB Layout Diagrams

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ˇ ˘ Precautions And Safety Notices 1. 8. Exploded Diagram and Spare Parts List 7. Recommended Spare Parts List Adjusting Procedure 2. Specification 5. 4. Circuit Description 3. 6. Trouble Shooting Flow Chart Front Panel Function Control Description 9. Block Diagram 10. Schematic Diagrams

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Documents

LCD panel type 13 - go-gddq. · PDF fileModel No. VLCDS23724-2W 17” Color TFT LCD Display Service Manual ViewSonic VA720-2 ViewSonic 381 Brea Canyon Road, Walnut, California 91789