ViewSonic VP720B - ThinEdge - 17" LCD Monitor Service Manual
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ViewSonic VP720B - ThinEdge - 17" LCD Monitor Service Manual

17” color tft lcd display
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Service Manual

ViewSonic VP720-1
VP720b-1
Model No. VS10927
17" Color TFT LCD Display
(VP720-1_VP720b-1_SM Rev. 1a Jan.2006)
ViewSonic® 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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Summary of Contents for ViewSonic VP720B - ThinEdge - 17" LCD Monitor

  • Page 1: Service Manual

    Service Manual ViewSonic VP720-1 VP720b-1 Model No. VS10927 17” Color TFT LCD Display (VP720-1_VP720b-1_SM Rev. 1a Jan.2006) ViewSonic® 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583...

  • Page 2: Revision History

    Further, ViewSonic reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or changes.

  • Page 3: Table Of Contents

    4. Circuit Description 5. Adjustment Procedure 6. Troubleshooting Flow Chart 7. Block Diagram 8. Recommended Spare Parts List 9. Exploded Diagram and Exploded Parts List 10. Schematic Diagrams 11. PCB Layout Diagrams ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...

  • Page 4: Precautions And Safety Notices

    (13) Small amount of materials having no flammability grade is used in the LCD module. The LCD module should be supplied by power complied with requirements of Limited ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 5 Do not touch and that may cause “Mura” the surface of the polarizer. Take out the monitor with cushions Taking out the monitor by grasping the LCD panel. That may cause “Mura” ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 6 Place the monitor on a clean and soft foam pad. Placing the monitor on foreign objects. That could scratch the surface of the panel or cause “Mura” The panel is placed facedown on the lap. That may cause “Mura” ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...

  • Page 7: Specification

    No any sympathetic or abnormal noise allowed under Volume OSD ≤ 70% 5. Electrical Requirements Horizontal Frequency 24 – 82 kHz Vertical Refresh Rate 50 – 85 Hz. Maximum Pixel Clock 135 MHz Sync Polarity Independent of sync polarity. ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 8 Average ¡Ø 4ms (Over Drive by scalar) *GTG response time was defined as average value of Tr and Tf for gray to gray signal change. Mercury 3 mg per lamp Panel Defects Please see Panel Quality Specifications. ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 9 @ 70 Hz, 56.5 KHz 　 　 　 　 1024 x 768 @ 72 Hz, 58.1 KHz 　 　 　 　 1024 x 768 @ 75 Hz, 60.2 KHz 　 　 　 　 For Composite and SOG signal, ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 10 *3. The image quality of 85Hz mode might be worse than 75Hz. 6. Mechanical Dimension (Desktop) Width 376 mm (14.8 inch) Height (Height adjust to the bottom) 363mm (18.2 inch) Depth 229mm (9 inch) Monitor Weight 5.4 Kg (11.9 lbs) ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 11 Height Adjust 0 ~ ≥ 100 mm Pivot CW 90º Package Specifications The “Top Level Assembly” shall meet the ViewSonic Corporation ViewSonic Packaging Spec Packaging Spec, VSCPACSPEC003 ViewSonic Pallet Spec Refer to ViewSonic Pallet Load Specification REV.1.I The ink shall not rub off after a suitable drying time.

  • Page 12: Front Panel Function Control Description

    Also toggles between two controls on saves adjustments. some screens. Also a shortcut to toggle analog and digital connection. Power light Green = ON Orange = Power Saving Standby Power On/Off ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 13 • If necessary, make small adjustments using H. POSITION and V. POSITION until the screen image is completely visible. (The black border around the edge of the screen should barely touch the illuminated “active area” of the LCD display.) ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...

  • Page 14: Main Menu Controls

    Color Adjust provides several color adjustment modes, including preset color temperatures and a User Color mode which allows independent adjustment of red (R), green (G), and blue (B). The factory setting for this product is 6500K (6500 Kelvin). ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 15 Preset Timing Mode, colors return to the 6500K factory preset. Information displays the timing mode (video signal input) coming from the graphics card in the computer, the LCD model number, the serial number, and the ViewSonic website URL. See your graphics card’s user guide for ®...
  • Page 16 “15 second” setting, if a control is not pushed within 15 seconds, the display screen disappears. OSD Background allows the user to turn the OSD background On or Off. ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 17 Preset Timing Mode listed in the Specifications of this manual. Exception: This control does not affect changes made with the User Color control, Language Select or Power Lock setting. ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 18 [1] + [▲] OSD Lock No signal + [▼] + [▲] Burning mode [▲] + [2] + [ ] Factory Mode Remark : All the short cuts function are only available while OSD off ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...

  • Page 19: Circuit Description

    Every window can place anywhere on the screen. Rotary 90,180,270 degree Independent row shadowing/bordering. Programmable blinking effects for each character OSD-made internal pattern generator for factory mode Support 12x18~5x18 proportional font ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 20 The low-pass filter in front of H/V scale-down plays a role of anti-aliasing filter. Moreover, the filter prior to vertical scale-down can be config as high-pass filter to serve as vertical peaking filter. ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 21 The EM6A9320 provides programmable Read or Write burst lengths of 2, 4, 8. An auto precharge function may be enabled to provide a self-timed row precharge that is initiated at the end of the burst sequence. ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 22 There are two signal to control the inverter which come from system. Logic “high” level which send to I901 is turn on the inverter. BRI signal control brightness by DC level which was integral from PWM signal. ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 23 Ptot Total Power Dissipation (Tcase = 60°C) 6 W Tamb Ambient Operating Temperature 0 to 70 °C Tstg, Tj Storage and Junction Temperature -40 to 150 °C V6 Volume CTRL DC voltage 7 V 0 4 8 12 Area(cm2) ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...

  • Page 24: Adjustment Procedure

    800 x 600 @ 60Hz, 37.9kHz 15. 800 x 600 @ 72Hz, 48.1kHz 800 x 600 @ 72Hz, 48.1kHz 16. 800 x 600 @ 75Hz, 46.9kHz 800 x 600 @ 75Hz, 46.9kHz ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 25 Figure 7, 8 Dark Screen pixels should be compliant with the spec. White Balance White & Black The screen must have the Figure 9 Pattern pure white and black pattern, no other color. ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 26 Fine Line Morie Pattern (Figure1) Gray Scale Pattern (Figure2) Horizontal & Vertical Thickness Pattern (Figure 3) R. Color Pattern (Figure 4) G. Color Pattern (Figure5) B. Color Pattern (Figure 6) ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 27 Please select and enter “Auto Image Adjust” function on Main Menu to see if it is workable. The “Auto Image Adjust” function is aimed to offer a better screen quality by built-in ASIC. For optimum screen quality, the user has to adjust each function manually. ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 28 - If not, please return the unit to repair area. 1.5.9 Screen Uniformity and Flicker Test Signal: 1280*1024@60Hz Test Pattern: Full White Pattern - Check and see if it is in normal condition. ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 29 After final QC step, we have to erase all saved changes again and restore the factory defaults. You should do “All Mode Reset” again. 1.5.15 Power Off Monitor Turn off the monitor by pressing “Power” button. ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 30 2.2.1 Connect P2 of Fixture with printer port of PC by LPT Cable. 2.2.2 Connect P1 of Fixture with Monitor by VGA Cable. 2.2.3 Connect Power Cord to Monitor. 2.2.4 Connect PC to the additional monitor. ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 31 I. ISP Download program procedure Hardware Connect status: Down load isp program Step 1: Execute ISP.exe ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 32 Then press the Creat Security File Button to enter step 3. Step 3: Creat Security File Enter the three string into the blank like fig 2. Then press OK Button. ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 33 Press the Load MCU File button to select the file will be download. (*.hex) Step 5: Run Pressing the Run Button to start download program. Press OK button to Enter ISP mode. ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 34 If the test result shows “passed,” it means the connection is well. If not (failed), it means the connection has problems. Then you need to check the setup procedure or reboot the PC, or simply use another PC to do the firmware upgrade. ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 35 - VP720 Series Monitor - DDC Card - PC - RS232 cable - DVI-DVI Cable - Barcode Reader - VGA Cable VP720 DDC Card DVI-DVI Cable RS-232 Cable Barcode Reader VGA Cable ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 36 4.(when key in DVI DDC information, use VGA transform to DVI port ) 5.Connect Power Cord to VP720 Monitor. 3.3 DDC Key In Procedure 1.Run DDC.exe 2.Choose model number and conform the Time then Press “ENTER” key. ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 37 3.When appear the PIC “ choose DDC Card”, Press ALT+2 .Enter DDC 2B test interface. Choose DDC Card 4.Press F8 to choose corresponding model.DAT(VP720-A.DAT press“ENTER” key) VP720_A means the DDC under analog mode. VP720-D means the DDC under digital mode. ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 38 5.Press F9 enter the download interface 6.Key in the serial number or use the barcode reader to scan the barcode of the monitor, and press “ENTER” key. ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 39 7.The successful picture is as follows. ”Compare EDID ：OK! Press any key to continue”. 8.Let VP720 active, then see the information in OSD, it shows ”Serial NO : PXX054700001” ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 40 3.4 check method Use ViewSonic EDID Editor Connect the VP720 to PC with VGA Cable. Excute the EDID Editor, then Press Ctrl+F5. If the DDC is correct, you can see the information as follow: ViewSonic Corporation Confidential – Do Not Copy...
  • Page 41 1. Disassembly of Stand unit from Monitor 1.1 Unscrew four screws that secure Stand Unit. Stand 2. Disassembly of Front Cover,Rear Cover and Speaker. 2.1 Detach Front Cover from monitor. Front Cover ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 42 2.2 Unscrew 6 screws to remove Rear Cover. Rear Cover 2.3 Disconnect the wires to remove Speaker module. Speaker ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 43 3. Disassembly of Power Board,Main Board,Keypad Board and Panel Unit 3.1 Unscrew 6 screws to remove Shielding Plate. Hinge Shielding Plate 3.2. Unscrew 4 screws and disconnect the wires to remove Power Board. Power Board ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 44 3.3. Unscrew 2 screws and disconnect the wires to remove Main Board. Main Board 3.4. Lay Panel Unit facedown and unscrew 4 screws on its right and left sides to remove Panel Unit and Keypad Board. Panel Unit Panel Bracket Keypad Board ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...

  • Page 45: Packing Procedure

    1.4 Place the monitor into the carton and then put all the accessories into the carton. At last, close the Power Cord carton and seal it with tape. (Figure 5) DVI Cable VGA Cable Audio Cable Figure 4 Figure 5 User’s Guide ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...

  • Page 46: Troubleshooting Flow Chart

    OK ? CHECK I101 CHECK I101 1.8V 1.8V SUROUND CAP UROUND CAP BEAD OK ? OK ? CHECK I105, CHECK I105 2.5V 2.5V SUROUND CAP UROUND CAP BEAD OK ? OK ? ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 47 PIN41 3.3V? D102,L107 CHECK CHECK 24MHZ PIN15,16 X102,C232 C233 OK ? CHECK CHECK TRACE PIN15,PIN16 OK ? CLOCK OK ? CHECK CHECK I106 EVERY TWO KEYPAD PIN SHORT ? P107 OK ? ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 48 I108 or Check P102 Check Check I108 R-pack Pin 8,10,12 Sign Cable soldering Check Check I103 poor I106 poor L108,109,110 C104,105,107 soldering soldering R106,107,108 C108,109,110 I108 P105 poor fail or poor soldering soldering ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 49 6.5. NO AUDIO Check jack Check P603 Audio cable Check Check 12V TRACE Check Check I601 P601 Check speaker ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...

  • Page 50: Block Diagram

    Remark 2: All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR approved by ViewSonic Corporation. This is to eliminate repeated cross checks of each item between this version and prior versions.
  • Page 51 Remark 2: All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR approved by ViewSonic Corporation. This is to eliminate repeated cross checks of each item between this version and prior versions.
  • Page 52 BOM LIST (VP720-1) ViewSonic Model Number: VS10927-1W Rev: 1a Serial No. Prefix: PXV Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty #N/A 2341150996P CAP,CHIP 125'C CS 0603/COG/50V 5.0p J T C101 1.000" #N/A 2341150996P CAP,CHIP 125'C CS 0603/COG/50V 5.0p J T C102 1.000"...
  • Page 53 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty E-C-0404-3815 2346410496P CAP,CHIP 85'C CS 0603/Y5V/50V 0.1u Z T C207 1.000" E-C-0404-3815 2346410496P CAP,CHIP 85'C CS 0603/Y5V/50V 0.1u Z T C208 1.000" E-C-0404-3815 2346410496P CAP,CHIP 85'C CS 0603/Y5V/50V 0.1u Z T C209 1.000"...
  • Page 54 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty DIODE,ZENER SMD BZV55-C5V6 5% SOD-80C E-D-0403-1779 2364503996P PHILIPS D111 1.000" DIODE,ZENER SMD TZMC5V6 SOD-80 5.2-6.0V E-D-0403-2808 2364505616P VISHAY D111 1.000" DIODE,ZENER SMD BZV55-B5V6 2% SOD-80C #N/A 2364505636P PHILIPS D111 1.000"...
  • Page 55 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty #N/A 2365100896P MEMORY IC AT24C02N-10SC 8S1 ATMEL I104 1.000" IC,LINEAR(SMD) CM1117KCM-2.5V SOT223 #N/A 2365808596P CHAMPION I105 1.000" #N/A 2365811196P IC,LINEAR(SMD) AP1117E25A(2.5V)SOT223 AnaChip I105 1.000" MEMORY IC (FLASH) MTV512GMG64 LQFP-48 #N/A...
  • Page 56 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty E-R-0405-6409 2253210196P RES CHIP 1/10W RC 0603 1/10W 100 ohm J T R114 1.000" E-R-0405-6409 2253210196P RES CHIP 1/10W RC 0603 1/10W 100 ohm J T R115 1.000" E-R-0405-6409 2253210196P RES CHIP 1/10W RC 0603 1/10W 100 ohm J T R116 1.000"...
  • Page 57 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty E-R-0405-6419 2253247296P RES CHIP 1/10W RC 0603 1/10W 4.7Kohm J T R222 1.000" E-R-0405-6417 2253247096P RES CHIP 1/10W RC 0603 1/10W 47 ohm J T R223 1.000" E-R-0405-6411 2253210396P RES CHIP 1/10W RC 0603 1/10W 10Kohm J T R224 1.000"...
  • Page 58 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty #N/A 2364600496P DIODE,SWITCH SMD MM4148 SOD-80 GRANDE D907 1.000" E-D-0403-2041 2364600396P DIODE,SWITCH SMD LL4148 SOD-80 DIODES D908 1.000" E-00003534 2363600696P DIODE,SWITCH RLS4148-T11 SOD-80 ROHM D908 1.000" E-00003830 2364601396P DIODE,SWITCH SMD 1N4148W-7-F SOD-123 DIODES D908 1.000"...
  • Page 59 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty #N/A 2251418226P RES,CHIP 1/4 RC 1206 1/4 W 18.2Kohm F T R907 1.000" #N/A 2253451596P RES CHIP 1/4W RC 1206 1/4 W 5.1Mohm J T R911 1.000" #N/A 2253410596P RES CHIP 1/4W RC 1206 1/4 W 1.0Mohm J T R918 1.000"...
  • Page 60 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty #N/A 2361320191P XISTOR,NPN R HSC945-P TO-92 HSMC Q902 1.000" E-D-0403-2009 2363227295P DIODE,RECT 2A07 DO-15 1000V/2A TSC D801 1.000" E-D-0403-1531 2363221195P DIODE,RECT PG208 DO-15 PEC D801 1.000" E-D-0403-1671 2363224295P DIODE,RECT 20KDA60 NI D801 1.000"...
  • Page 61 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty M-WR-0828-0450 2428106075P JUMPER 0.6¡í *7.5mm J822 1.000" M-WR-0828-0478 2428106100P JUMPER 0.6¡í *10.0mm J901 1.000" M-WR-0828-0478 2428106100P JUMPER 0.6¡í *10.0mm J903 1.000" M-WR-0828-0478 2428106100P JUMPER 0.6¡í *10.0mm J904 1.000" M-WR-0828-0478 2428106100P JUMPER 0.6¡í *10.0mm J905 1.000"...
  • Page 62 2044268002P FUNCTION KEY VP920/ABS 94HB PS7604B 1F02 1.000" #N/A 2053755400P LED INDIC.-PWR VP920/PMMA 94HB 1F03 1.000" #N/A 2051353800P NAME PLATE VIEWSONIC BIRD LOGO H:8MM 1F04 1.000" #N/A 2433305040P SHIELDING FOAM W10*H6.5*L40mm K901 1.000" #N/A 2434325603P CU SHIELDING TAPE W25*L60mm (AL) K902 1.000"...
  • Page 63 6P11 0.021" P-00004565 2012183700P POLYFOAM VP720/EPS(R) 6P20 1.000" P-00004566 2012183800P POLYFOAM VP720/EPS(L) 6P21 1.000" M-LB-0813-0002 2056603050P SERIAL LABEL VIEWSONIC LCD SERIAL LABEL 6P51 1.000" M-LB-0813-0528 2055103400P LABEL JK0936F WEN 6P52 1.000" M-MS-0808-1317 2013053000P POLYETHY BAG 90CMX75CMX0.02t PE-LD 6P60 1.000" #N/A 2013054020P POLYETHY BAG 500*400MM T=0.03MM LDPE...
  • Page 64 BOM LIST (VP720b-1) ViewSonic Model Number: VS10927-1W Rev: 1a Serial No. Prefix: PXW Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty #N/A 2341150996P CAP,CHIP 125'C CS 0603/COG/50V 5.0p J T C101 1.000" #N/A 2341150996P CAP,CHIP 125'C CS 0603/COG/50V 5.0p J T C102 1.000"...
  • Page 65 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty E-C-0404-3815 2346410496P CAP,CHIP 85'C CS 0603/Y5V/50V 0.1u Z T C214 1.000" E-C-0404-3815 2346410496P CAP,CHIP 85'C CS 0603/Y5V/50V 0.1u Z T C215 1.000" E-C-0404-3815 2346410496P CAP,CHIP 85'C CS 0603/Y5V/50V 0.1u Z T C216 1.000"...
  • Page 66 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty E-D-0403-1892 2364200896P DIODE,RECT(SMD) BAS32L SOD80C PHILIPS D122 1.000" E-00003830 2364601396P DIODE,SWITCH SMD 1N4148W-7-F SOD-123 DIODES D122 1.000" E-00003534 2363600696P DIODE,SWITCH RLS4148-T11 SOD-80 ROHM D122 1.000" #N/A 2364600496P DIODE,SWITCH SMD MM4148 SOD-80 GRANDE D125 1.000"...
  • Page 67 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty #N/A 2251275096P RES,CHIP 1/10 RC 0603 1/10W 75 ohm F T R108 1.000" E-R-0405-6409 2253210196P RES CHIP 1/10W RC 0603 1/10W 100 ohm J T R109 1.000" E-R-0405-6409 2253210196P RES CHIP 1/10W RC 0603 1/10W 100 ohm J T R110 1.000"...
  • Page 68 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty E-R-0405-6417 2253247096P RES CHIP 1/10W RC 0603 1/10W 47 ohm J T R223 1.000" E-R-0405-6411 2253210396P RES CHIP 1/10W RC 0603 1/10W 10Kohm J T R224 1.000" #N/A 2253210696P RES CHIP 1/10W RC 0603 1/10W 10Mohm J T R230 1.000"...
  • Page 69 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty E-00003534 2363600696P DIODE,SWITCH RLS4148-T11 SOD-80 ROHM D912 1.000" E-00003830 2364601396P DIODE,SWITCH SMD 1N4148W-7-F SOD-123 DIODES D912 1.000" #N/A 2364600496P DIODE,SWITCH SMD MM4148 SOD-80 GRANDE D912 1.000" #N/A 2379822106P BEAD,HI-IMPEDANCE Z= 220 ohm(200MHZ~) 0805 200mA L601 1.000"...
  • Page 70 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty #N/A 2284110291P CAP CER CC 1000P/1KV X7R P=5.0 K T C820 1.000" #N/A 2284110291P CAP CER CC 1000P/1KV X7R P=5.0 K T C821 1.000" #N/A 2335447771P CAP,ELE LOW ESR 3000HR EC 470u/ 25V 10*16 P=5.0 C C823 1.000"...
  • Page 71 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty #N/A 2363601795P DIODE,SWITCH 1N4148TA_NL DO-35 FAIRCHILD D904 1.000" #N/A 2363601895P DIODE,SWITCH 1N4148 DO-35 TSC D904 1.000" E-D-0403-0531 2363600195P DIODE,SWITCH 1N4148 DO-35 D905 1.000" #N/A 2363601795P DIODE,SWITCH 1N4148TA_NL DO-35 FAIRCHILD D905 1.000"...
  • Page 72 Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty #N/A 2232410095P RES,CBN 1/4 RD 1/4W 10 ohm J T R932 1.000" #N/A 2232410095P RES,CBN 1/4 RD 1/4W 10 ohm J T R933 1.000" E-R-0405-4534 2239220015P RES,PRE 1/4 S RN 1/4WS 2.0Kohm F T52 R944 1.000"...
  • Page 73 2044268001P FUNCTION KEY VP920/ABS 94HB Midnight Gray 1F02 1.000" #N/A 2053755400P LED INDIC.-PWR VP920/PMMA 94HB 1F03 1.000" #N/A 2051353800P NAME PLATE VIEWSONIC BIRD LOGO H:8MM 1F04 1.000" #N/A 2433305040P SHIELDING FOAM W10*H6.5*L40mm K901 1.000" #N/A 2434325603P CU SHIELDING TAPE W25*L60mm (AL) K902 1.000"...

  • Page 74: Recommended Spare Parts List

    8. Exploded View And Exploded Parts List ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 75 ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 76 EXPLODED PARTS LIST (VP720/b-1) ViewSonic Model Number: VS10927-1W Rev: 1a Serial No. Prefix: PXV / PXW Item ViewSonic P/N Ref. P/N Description Q'ty #N/A 2024271202P FRONT BEZEL VP720 ABS 94HB PS7604B #N/A 2024271201P FRONT BEZEL VP720 ABS 94HB MIDNIGHT GRAY...
  • Page 77 PACKING PART LIST (VP720-1) ViewSonic Model Number: VS10927-1W Rev: 1a Serial No. Prefix: PXV Item ViewSonic P/N Ref. P/N Location Q'ty VP720 monitor M-MS-0808-1317 2013053000P POLYETHY BAG P-00004565 2012183700P POLYFOAM (R) P-00004566 2012183800P POLYFOAM (L) BASE ASS'Y #N/A 2013054020P POLYETHY BAG...

  • Page 78: Exploded Diagram And Exploded Parts List

    I601 TDA7496L DDC-SD A I106 ONBACKLI AUDIO AMP VOLUME CONTROL MTV512GMG64 DDC- SCL (OPTION) SPEAKE STANDBY I107 24LC16 EEPROM 3.3V P603 AUDIO IN KEY- PAD LED ViewSonic Corporation Model Title Date Rev: ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...

  • Page 79: Schematic Diagrams

    FEB_1206 1N4148 1N4148 2N3906 VGA_5V D103 NC/1N4148 C145 C146 BUS_POWER D125 47uF_16V R136 1N4148 5VCC D123 D124 Q104 1N4148/NC 1N4148/NC 2N3906 ViewSonic Corporation 3.3VCC R138 1.5K Model R256 0 Title Date Rev: ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 80 RX0P DATA0/5 SHLD BUS_POWER BUS_POWER DATA5- DATA5+ CLK-SHLD RXCP D120 RXCP CLK+ RXCN UDZ5.6B CLK- RXCN A-RED A-GREEN ViewSonic Corporation A-BLUE A-HSYNC A-GND SHEL12 INPUT & OUTPUT Model DVI-CON Title Date Rev: ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 81 100nF 22uF_16V C182 C183 C184 ADC_GND C181 22uF_16V 100nF 100nF 100nF R257 NC/22 RX2P DDC1_SDA RX2N R258 NC/22 ViewSonic Corporation RX1P RX1N DDC1_SCL RX0P RX0N RXCP RXCN SCALER Model Title Date Rev: ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 82 RTD_VREF VSSQ VSSQ VSSQ C219 R166 C220 VSSQ VSSQ 100nF 100nF VSSQ VSSQ VSSQ VSSQ VREF C,C Close DDR C,C Close RTD2363 ViewSonic Corporation R161 R162 R163 R164 Model Title Date Rev: ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 83 MTV512 BUS_POWER D117 D122 X102 24MHz 1N4148 1N4148 R203 C230 R204 R205 I104 100nF C232 C233 ViewSonic Corporation 4.7K 4.7K 10pF 10pF R206 MCU & KEYPAD Model DDC2_SCL R207 DDC2_SDA 24C02 Title Date Rev: ViewSonic Corporation Confidential – Do Not Copy...
  • Page 84 470U/16V C603 C606 1uF/50V L605 Bead R_OUT SOCKET OUTR TO SPEAER L602 R623 Bead 0805 470U/16V L606 C617 Bead SOLDER SIDE P602/NC L603 Bead 0805 ViewSonic Corporation AUDIO Model Title Date Rev: ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 85 3920 1%(CPT/CMO) 2740 1% (HS) 2740 1% (HS) 1206 EP05Q04 C919 Q909 0.068uF (CPT07Q) AP9977J R940 (15.4/1%) 82.5 1%(CPT) 33.2 1%(CMO) D916 75 1%(HS) 1206 OPTION ViewSonic Corporation INVERTER Model Title Date Rev: ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 86 110K 1% I803 4700PF/DIP R825 C803 D813 TL431D 13K 1% 4700pF C802 R809 1206 47R/1206 1N4148/DIP 4700pF C812 10000P/DIP C839 ViewSonic Corporation 1uF/50V S801 POWER Model AC IN 100~240V Title Date Rev: ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...

  • Page 87: Pcb Layout Diagrams

    11. PCB Layout Diagrams 11.1. MAIN PCB TOP VIEW ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 88 11.2. MAIN PCB BOTTOM VIEW ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 89 11.3. CON PCB TOP VIEW 11.4. CON PCB BOTTOM VIEW ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 90 11.5. POWER PCB TOP VIEW ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 91 11.6 POWER PCB BOTTOM VIEW ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1...
  • Page 92 Company: Add.: Fax: Tel: E-mail: After completing this form, please return it to ViewSonic Quality Assurance in the USA at facsimile 1-909-839-7943. You may also e-mail any suggestions to the Director, Quality Systems & Processes (marc.maupin@viewsonic.com) ViewSonic Corporation Confidential – Do Not Copy...

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