LCD panel type 13 - go-gddq. · PDF fileModel No. VLCDS23724-2W 17” Color TFT LCD...
Transcript of LCD panel type 13 - go-gddq. · PDF fileModel No. VLCDS23724-2W 17” Color TFT LCD...
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
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11. PCB Layout Diagrams
1
2
4
5
6
7
11
15
18
19
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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.
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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
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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
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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.
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4 Circuit Description
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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.
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6. Trouble Shooting Flow Chart
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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
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
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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
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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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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
7. Recommended Spare Parts List
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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
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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
13ViewSonic Corporation Confidential - Do Not Copy VA720-2
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
14ViewSonic Corporation Confidential - Do Not Copy VA720-2
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
15ViewSonic Corporation Confidential - Do Not Copy VA720-2
12
3
4
5 67 8
9
2
PACKING METHOD
16ViewSonic Corporation Confidential - Do Not Copy VA720-2
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
17ViewSonic Corporation Confidential - Do Not Copy VA720-2
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
18ViewSonic Corporation Confidential - Do Not Copy VA720-2
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
19ViewSonic Corporation Confidential - Do Not Copy VA720-2
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:Dremodify100uF/DIP
REV:Dremodify100uF/DIP
REV:Dremodify100uF/DIP
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
20ViewSonic Corporation Confidential - Do Not Copy VA720-2
11.PCB LAYOUT
MIN BOARD
21ViewSonic Corporation Confidential - Do Not Copy VA720-2
SW BOARD
22ViewSonic Corporation Confidential - Do Not Copy VA720-2
-&,
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
4"&"!*"")!"!""&!.VA720-2 B)5!D
, ,"
,!
,&&
, ,0E
, A
"!"!!5)B
"!5)B
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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
7. Recommended Spare Parts List
Adjusting Procedure
2. Specification
5.
4. Circuit Description
3.
6. Trouble Shooting Flow Chart
23ViewSonic Corporation Confidential - Do Not Copy VA720-2
Front Panel Function Control Description
9. Block Diagram
10. Schematic Diagrams
11. PCB Layout Diagrams