ViewSonic VP920-1 User Manual Download

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(VP920-1_VP920b-1_SM Rev. 1a Jan. 2006)

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

ViewSonic VP920-1

Model No. VS10929

19” Color TFT LCD Display

Service Manual

VP920b-1

Summary of Contents for VP920-1

Page 1: ... VP920 1_VP920b 1_SM Rev 1a Jan 2006 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 ViewSonic VP920 1 Model No VS10929 19 Color TFT LCD Display Service Manual VP920b 1 ...

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

Page 3: ...ty Notices 1 2 Specification 4 3 Front Panel Function Control Description 9 4 Circuit Description 16 5 Adjustment Procedure 21 6 Troubleshooting Flow Chart 43 7 Block Diagram 47 8 Recommended Spare Parts List 73 9 Exploded Diagram and Exploded Parts List 77 10 Schematic Diagrams 78 11 PCB Layout Diagrams 86 ...

Page 4: ...sure to turn off power supply when inserting or disconnecting from input connector 3 Wipe off water drop immediately Long contact with water may cause discoloration or spots 4 When the panel surface is soiled wipe it with absorbent cotton or other soft cloth 5 Since the panel is made of glass it may break or crack if dropped or bumped on hard surface 6 Since CMOS LSI is used in this module take ca...

Page 5: ...Handling and Placing Methods Correct Methods Incorrect Methods Only touch the metal frame of the LCD panel or the front cover of the monitor Do not touch the surface of the polarizer Surface of the LCD panel is pressed by fingers and that may cause Mura Take out the monitor with cushions Taking out the monitor by grasping the LCD panel That may cause Mura ViewSonic Corporation Confidential Do Not ...

Page 6: ...oft 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 VP920 1_VP920b 1 3 ...

Page 7: ...Speaker specification Line input connection 3 5 mm stereo jack Line input signal 1 0 Vrms Line input impedance 22 kOhm Maximum power output Electric 1 W 15 distortion Signal to Noise Ratio 40 dB Frequency response 100 Hz 20 Khz Distortion 5 THD 1kHz Vibration There should be no audible vibration with volume at 100 and treble bass at default Screen image There should be no affect on the screen imag...

Page 8: ...Contrast Brightness Max 200 cd m2 Min after 30 minute warm up Brightness Uniformity 75 Typ 70 Min Contrast Ratio 600 1 Typ 400 1 Min Color Depth 16 2 million colors 6 2 bit panel Horizontal Viewing Angle 140 degrees Typ 120 degrees Min CR 10 160 degrees Typ CR 5 Vertical Viewing Angle 130 degrees Typ 110 degrees Min CR 10 140 degrees Typ CR 5 Response Time 10 90 Ta 25 C On Off Typical 8 ms Maximun...

Page 9: ...mary 720x400 70Hz 4 640 x 480 50 Hz 24 7 KHz 5 640 x 480 60 Hz 31 5 KHz Toggle 640x480 60Hz and 720x480 60Hz by 1 2 primary 640x480 60Hz 6 640 x 480 67 Hz 35 KHz For MAC 7 640 x 480 72 Hz 37 9 KHz 8 640 x 480 75 Hz 37 5 KHz 9 640 x 480 85 Hz 43 3 KHz 10 720 x 400 70 Hz 31 5 KHz Toggle 640x400 70Hz and 720x400 70Hz by 1 2 primary 720x400 70Hz 11 720 x 480 60 Hz 31 5 KHz 480p Toggle 640x480 60Hz and...

Page 10: ... 5 KHz 720p 27 1280 x 720 60 Hz 45 KHz 720p 28 1280 x 768 50 Hz 39 6 KHz 29 1280 x 768 60 Hz 47 8 KHz For Composite and SOG signal toggle 1024x768 60Hz and 1280x768 60Hz by 1 2 primary 1024x768 60Hz 30 1280 x 768 75 Hz 60 3 KHz For Composite and SOG signal toggle 1024x768 75Hz and 1280x768 75Hz by 1 2 primary 1024x768 75Hz 31 1280 x 768 85 Hz 68 6 KHz For Composite and SOG signal toggle 1024x768 8...

Page 11: ...t Load Specification REV 1 I Ink The ink shall not rub off after a suitable drying time Multiple Trips The carton shall withstand 10 trips by any combination of air rail land or sea transportation One Unit Packing Standard Shipping Carton Type One piece construction with single wall 0 6 Kg Shipping Carton Handholds No Plastic handle PE LD 12 g Poly form EPS 128 g 2 pices Accessory plastic bags PE ...

Page 12: ...lays the control screen for the highlighted control Also toggles between two controls on some screens Also a shortcut to toggle analog and digital connection Power light Green ON Orange Power Saving Standby Power On Off Displays the Main Menu or exits the control screen and saves adjustments 3 Front Panel Function Control Description ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 ...

Page 13: ...the setting press the upSor downTbuttons 5 To save the adjustments and exit the menu press button 1 twice The following tips may help you optimize your display Adjust the computer s graphics card so that it outputs a 1280 x 1024 60Hz video signal to the LCD display Look for instructions on changing the refresh rate in the graphics card s user guide If necessary make small adjustments using H POSIT...

Page 14: ...n to its pre set value Contrast adjusts the difference between the image background black level and the foreground white level Brightness adjusts background black level of the screen image Input Select allows the user to toggle between an analog and a digital signal Audio Adjust increases the volume decreases the volume and mutes the audio Color Adjust provides several color adjustment modes inclu...

Page 15: ... green to the screen image for a darker color 5000K Adds blue and green to the screen image for a darker color User Color Individual adjustments for red R green G and blue B 1 To select color R G or B press button 2 2 To adjust selected color pressSorT Important If you select RECALL from the Main Menu when the product is set to a Preset Timing Mode colors return to the 6500K factory preset Informa...

Page 16: ... Menu displays the menu shown below Language Select allows the user to choose the language used in the menus and control screens Resolution Notice allows the user to enable or disable this notice OSD Position allows the user to move the OSD menus and control screens OSD Timeout sets the length of time the OSD screen is displayed For example with a 15 second setting if a control is not pushed withi...

Page 17: ... the display is operating in a factory 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 VP920 1_VP920b 1 14 ...

Page 18: ...all both of Contrast and Brightness to default 1 2 toggle display mode see segment Timing Table 1 White Balance Not shown on user s guide 1 Power Lock 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 VP920 1_VP920b 1 15 ...

Page 19: ...tra ZoomTM Fully programmable zoom ratios Independent horizontal vertical scaling High quality zoom algorithm Programmable Sharpness Smooth enhancement Support Anamorphic and Panoramic scaling Memory Arbitor Embedded DDR SDRAM memory Arbitor Support tearless Frame Rate Conversion Color Processor Digital brightness and contrast adjustments sRGB compliance Support dual R G B 10 bit Gamma correction ...

Page 20: ...t one of them to display RTD2363 owns a capability to display YPbPr input source which normally come from DVD Player or Setup Box etc The YPbPr source can be into 1st or 2nd ADC pins TMDS Input RTD2363 integrates high speed single link receiver and high bandwidth content protection HDCP function It can operate up to 165Mhz It can effectively deal with the weak signal in long cable application whic...

Page 21: ...3 4 5 Burst length 2 4 8 Burst Type Sequential Interleave Full page burst length for sequential type only Start address of full page burst should be even All inputs except DQ s DM are at the positive edge of the system clock No Write Interrupted by Read function 4 individual DM control for write masking only Auto Refresh and Self Refresh 4096 refresh cycles 32ms Power supplies VDD 2 5V _ 5 VDDQ 2 ...

Page 22: ...ended to use such pin as input function An open drain pin means it can sink at least 4mA current It can be used as input or output function and needs an external pull up resistor An 8051 standard pin is a pseudo open drain pin It can sink at least 4mA current when output is at low level and drives at least 4mA current for 160nS when output transits from low to high then keeps driving at 120 uA to ...

Page 23: ...Vrms GV Closed Loop Gain Vol Ctrl 4 5V 28 5 30 31 5 dB GvLine Monitor Out Gain Vol Ctrl 4 5V Zload 30K 1 5 0 1 5 dB AMin VOL Attenuation at Minimum Volume Vol Ctrl 0 5V 80 dB BW 0 6 MHz ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VS DC Supply Voltage 26 V VIN Maximum Input Voltage 8 Vpp Ptot Total Power Dissipation Tcase 60 C 6 W Tamb Ambient Operating Temperature 0 to 70 C Tstg Tj Storag...

Page 24: ...400 60Hz 31 5kHz 3 640 x 400 70Hz 31 5kHz 4 640 x 480 50Hz 24 7kHz 5 640 x 480 60Hz 31 5kHz 6 640 x 480 67Hz 35 0kHz 7 640 x 480 72Hz 37 9kHz 8 640 x 480 75Hz 37 5kHz 9 640 x 480 85Hz 43 27kHz 10 720 x 400 70Hz 31 5kHz 11 720 x 480 60Hz 31 5kHz 12 720 x 576 50Hz 31 3kHz 13 800 x 600 56Hz 35 1kHz 14 800 x 600 60Hz 37 9kHz 15 800 x 600 72Hz 48 1kHz 16 800 x 600 75Hz 46 9kHz 640 x 350 70Hz 31 5kHz 64...

Page 25: ... 8kHz 1280 x 768 75Hz 60 3kHz 1280 x 768 85Hz 68 6kHz 1280 x 960 50Hz 49 4kHz 1280 x 960 60Hz 59 7kHz 1280 x 960 75Hz 75 2kHz 1280 x 1024 60Hz 63 4kHz 1280 x 1024 75Hz 79 97kHz 1 4 2 Function Test Display Pattern Item Test Content Pattern Specification Remark 1 Frequency Tracking Fine Line Moire Eliminate visual wavy noise Figure 1 2 Contrast Brightness 16 Gray Scale 16 gray levels should be disti...

Page 26: ...n 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 VP920 1_VP920b 1 23 ...

Page 27: ...t This action will allow you to erase all end user s settings and restore the factory defaults 1 5 2 Auto Image Adjust 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 Confide...

Page 28: ...n Horizontal Vertical Line Thickness Pattern Check and see if the image boundary is within the screen frame If not readjust by the following steps a Select and enter Manual Image Adjust function on OSD Main Menu b Then select and enter Horizontal Size or Horizontal Vertical Position function to adjust the video boundary to be full scanned and within screen frame 1 5 7 White Balance Test Signal 128...

Page 29: ...play Modes Test Signal Analog 640 350 70Hz 640 480 60HZ 720 400 70Hz 800 600 60HZ 70HZ 75HZ 832 624 75Hz 1024 768 60HZ 70HZ 75HZ 1280 1024 60 75Hz Digital 640 350 70Hz 640 480 60HZ 720 400 70Hz 800 600 60HZ 70HZ 75HZ 1024 768 60 70 72 75 1152 870 75Hz 1280 1024 60Hz 75HZ Normally when the primary mode 1280 1024 60Hz is well adjusted and compliant with the specification the secondary display modes ...

Page 30: ...Upgrade VGA Cable PC Personal Computer LPT Cable Firmware Upgrade Program One additional monitor for checking the program execution Printer Port VP920 PC LPT Cable VGA Cable 2 2 Setup Procedure 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 ViewSoni...

Page 31: ...I ISP Download program procedure 1 Hardware Connect status 2 Down load isp program Step 1 Execute ISP exe ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 28 ...

Page 32: ...It need to be selected the MTV512MV64 for this project 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 VP920 1_VP920b 1 29 ...

Page 33: ...he 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 VP920 1_VP920b 1 30 ...

Page 34: ...ISP status and Monitor Turn off the power of monitor AC plug off and disconnect the D Sub connector To connect the D Sub connector and then turn on the power of monitor AC plug on 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 u...

Page 35: ...nd the DDC does not conform to the monitor you have to do the DDC key in 3 1 Equipment Needed VP920 Series Monitor DDC Card PC RS232 cable DVI DVI Cable Barcode Reader VGA Cable VP920 DDC Card PC DVI DVI Cable RS 232 Cable Barcode Reader VGA Cable ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 32 ...

Page 36: ... port 3 Connect RS 232 Cable and VP920 with VGA Cable 4 when key in DVI DDC information use VGA transform to DVI port 5 Connect Power Cord to VP920 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 VP920 1_VP920b 1 33 ...

Page 37: ... DDC 2B test interface Choose DDC Card 4 Press F8 to choose corresponding model DAT VP920A DAT press ENTER key VP920_A means the DDC under analog mode VP920D means the DDC under digital mode ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 34 ...

Page 38: ...s 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 VP920 1_VP920b 1 35 ...

Page 39: ...ul picture is as follows Compare EDID OK Press any key to continue 8 Let VP920 active then see the information in OSD it shows Serial NO PXX054700001 ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 36 ...

Page 40: ...wSonic EDID Editor Connect the VP920 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 VP920 1_VP920b 1 37 ...

Page 41: ...gure 2 3 Figure 1 Figure 2 Figure 3 1 3 Put the cushions on the monitor Figure 4 1 4 Place the monitor into the carton and then put all the accessories into the carton At last close the carton and seal it with tape Figure 5 DVI Cable VGA Cable Audio Cable Power Cord Figure 5 User s Guide Figure 4 ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 38 ...

Page 42: ...from Monitor 1 1 Unscrew four screws that secure Stand Unit Stand 2 Disassembly of Front Cover Rear Cover and Speaker 2 1 Unscrew 2 screws to detach Front Cover from monitor Front Cover ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 39 ...

Page 43: ...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 VP920 1_VP920b 1 40 ...

Page 44: ...d Keypad Board and Panel Unit 3 1 Unscrew 6 screws to remove Shielding Plate Shielding Plate 3 2 Unscrew 6 screws and disconnect the wires to remove Power Board Power Board ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 41 ...

Page 45: ... 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 Bracket Keypad Board Panel Unit ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 42 ...

Page 46: ...ARD OK CHECK I102 SUROUND CAP BEAD OK CHECK I101 SUROUND CAP BEAD OK CHECK I105 SUROUND CAP BEAD OK CHECK P101 AND ROUND CAP OK CHECK I102 3 3V UROUND CAP OK CHECK I101 1 8V UROUND CAP OK CHECK I105 2 5V UROUND CAP OK N N N N Y Y Y ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 43 ...

Page 47: ... Q909 Q910 CHECK T901 T902 Y MAIN BOARD 5V 12V CHECK RESET CHECK VCC5V OK CHECK I106 PIN41 3 3V CHECK 24MHZ PIN15 16 OK CHECK PIN15 PIN16 CLOCK OK CHECK I106 EVERY TWO PIN SHORT CHECK C234 R208 D121 D116 R186 CHECK L804 D823 D822 OK CHECK Q103 Q104 D101 D102 L107 CHECK X102 C232 C233 OK CHECK TRACE OK CHECK KEYPAD P107 OK N N N N N N ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 ...

Page 48: ... P105 WIRE Check I106 Check I O cable Check P102 Check VCC2 5V 3 3V 1 8V Check I103 Check PANEL N N N N N N N N N N N N N N N N N N Y Y Y Y Y Some bits lost Check I108 Pin I103 poor soldering P105 poor soldering I108 or R pack soldering I106 poor soldering Lose color R or G or B Check P102 Pin 8 10 12 Check L108 109 110 R106 107 108 I108 fail or poor soldering Check Sign Cable Check C104 105 107 C...

Page 49: ...6 5 NO AUDIO Check jack P603 Check 12V Check I601 Check speaker Check Audio cable Check 12V TRACE Check P601 N N N ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 46 ...

Page 50: ...R ECN ViewSonic P N Ref P N Location Universal number Unit Price FOB Lead time Q ty 1 PCB ASS Y BLOCK MAIN B 00004570 6201 7998907101 49 84 30 1 2 PCB ASS Y BLOCK CON B 00004555 6202 7978904021 0 52 30 1 3 PCB ASS Y BLOCK POWER B 00004571 6204 7998907101 12 22 30 1 4 BEZEL ASS Y VP920 ABS 94HB PANTONE 432C C 00004579 2603307884 1 67 30 1 5 CABI BACK ASSY VP920 ABS 94HB PANTONE 432C C 00004580 2603...

Page 51: ... 33 E C 0404 3815 2346410496P CAP CHIP 85 C CS 0603 Y5V 50V 0 1u Z T C162 1 000 34 E C 0404 3815 2346410496P CAP CHIP 85 C CS 0603 Y5V 50V 0 1u Z T C163 1 000 35 E C 0404 3815 2346410496P CAP CHIP 85 C CS 0603 Y5V 50V 0 1u Z T C164 1 000 36 E C 0404 3815 2346410496P CAP CHIP 85 C CS 0603 Y5V 50V 0 1u Z T C165 1 000 37 E C 0404 3815 2346410496P CAP CHIP 85 C CS 0603 Y5V 50V 0 1u Z T C166 1 000 38 E...

Page 52: ... COG 50V 100p J T C242 1 000 103 E C 0404 4828 2341110196P CAP CHIP 125 C CS 0603 COG 50V 100p J T C243 1 000 104 E C 0404 4828 2341110196P CAP CHIP 125 C CS 0603 COG 50V 100p J T C244 1 000 105 E C 0404 3815 2346410496P CAP CHIP 85 C CS 0603 Y5V 50V 0 1u Z T C245 1 000 106 N A 2364600496P DIODE SWITCH SMD MM4148 SOD 80 GRANDE D101 RA 1 000 107 E D 0403 1892 2364200896P DIODE RECT SMD BAS32L SOD80...

Page 53: ...0 173 N A 2365104396P MEMORY IC NT5DS4M32EG FBGA 144 NANYA I103 RA 1 000 174 N A 2365105796P MEMORY IC SDRAM EM6A9320BI 5MG FBGA144 Etron I103 RB 1 000 175 N A 2365911696P IC DIGITAL SMD 24LC02B SN SOIC 8 MICROCHIP I104 RA 1 000 176 N A 2365100896P MEMORY IC AT24C02N 10SC 8S1 ATMEL I104 RB 1 000 177 N A 2365808596P IC LINEAR SMD CM1117KCM 2 5V SOT223 CHAMPION I105 RA 1 000 178 N A 2365811196P IC L...

Page 54: ... 1 000 246 E R 0405 6409 2253210196P RES CHIP 1 10W RC 0603 1 10W 100 ohm J T R115 1 000 247 E R 0405 6409 2253210196P RES CHIP 1 10W RC 0603 1 10W 100 ohm J T R116 1 000 248 E R 0405 6409 2253210196P RES CHIP 1 10W RC 0603 1 10W 100 ohm J T R117 1 000 249 E R 0405 6409 2253210196P RES CHIP 1 10W RC 0603 1 10W 100 ohm J T R118 1 000 250 E R 0405 6411 2253210396P RES CHIP 1 10W RC 0603 1 10W 10Kohm...

Page 55: ...1 000 317 E R 0405 6419 2253247296P RES CHIP 1 10W RC 0603 1 10W 4 7Kohm J T R219 1 000 318 E R 0405 6419 2253247296P RES CHIP 1 10W RC 0603 1 10W 4 7Kohm J T R220 1 000 319 E R 0405 6419 2253247296P RES CHIP 1 10W RC 0603 1 10W 4 7Kohm J T R221 1 000 320 E R 0405 6419 2253247296P RES CHIP 1 10W RC 0603 1 10W 4 7Kohm J T R222 1 000 321 E R 0405 6417 2253247096P RES CHIP 1 10W RC 0603 1 10W 47 ohm ...

Page 56: ... Y5V P 5 0 Z T C807 1 000 390 N A 2302010291P CAP MTL MEF 0 001uF 50V P 5 0 J T C808 1 000 391 N A 2333433691P CAP ELE 105 C EC 33u 25V 5 11 P 5 0 T C809 1 000 392 N A 2333510791P CAP ELE 105 C EC 100u 35V 8 11 P 5 0 T C810 1 000 393 N A 2302010391P CAP MTL MEF 0 01uF 50V P 5 0 J T C812 1 000 394 E C 0404 2262 2285110291P CAP CER CC 1000P 1KV Y5P P 5 0 K T C813 1 000 395 E C 0404 3473 2281410291P ...

Page 57: ...04 RA 1 000 461 E D 0403 1671 2363224295P DIODE RECT 20KDA60 NI D804 RB 1 000 462 N A 2363233795P DIODE RECT PS2010 2A 1000V DO 15 PEC D804 RC 1 000 463 N A 2362900395P TRANSIENT VOLTAGE SUPPRESSOR P6KE130A DO 15 PEC D805 RA 1 000 464 N A 2362900895P TRANSIENT VOLTAGE SUPPRESSOR P6KE130A TG DO 15 WILLAS D805 RB 1 000 465 E D 0403 1497 2363221895P DIODE RECT UF4006G PEC D806 1 000 466 N A 236323079...

Page 58: ... 000 531 M WR 0828 0450 2428106075P JUMPER 0 6 7 5mm J806 1 000 532 M WR 0828 0450 2428106075P JUMPER 0 6 7 5mm J807 1 000 533 M WR 0828 0450 2428106075P JUMPER 0 6 7 5mm J808 1 000 534 M WR 0828 0450 2428106075P JUMPER 0 6 7 5mm J809 1 000 535 M WR 0828 0450 2428106075P JUMPER 0 6 7 5mm J810 1 000 536 M WR 0828 0450 2428106075P JUMPER 0 6 7 5mm J811 1 000 537 M WR 0828 0450 2428106075P JUMPER 0 6...

Page 59: ...0 604 N A 2232410095P RES CBN 1 4 RD 1 4W 10 ohm J T R912 1 000 605 E R 0405 3526 2233427195P RES CBN 1 4 S RD 1 4WS 270 ohm J T52 R913 1 000 606 N A 2239268105P RES PRE 1 4 S RN 1 4WS 681 ohm F T R914 1 000 607 M WR 0828 0450 2428106075P JUMPER 0 6 7 5mm R915 1 000 608 M WR 0828 0478 2428106100P JUMPER 0 6 10 0mm R916 1 000 609 E R 0405 3526 2233427195P RES CBN 1 4 S RD 1 4WS 270 ohm J T52 R917 1...

Page 60: ... STD1955NL TO 251 SamHop Q912 RC 1 000 677 E TH 0416 0042 2229201212P THERMISTOR PTH SCK 103 THINKING R802 1 000 678 E 00003545 2245175406P MATEL GLAZE MG 1 4W 750Kohm J P 7 0 R805 1 000 679 N A 2235427806P RES MTL 1 RS 1W 0 27 ohm J P 7 0 R811 1 000 680 N A 2235427806P RES MTL 1 RS 1W 0 27 ohm J P 7 0 R812 1 000 681 N A 2235647013P RES MTL 3 RS 3WS 47 ohm J P 20 0 R827 1 000 682 N A 2242315595P H...

Page 61: ...A 2106658200P HINGE VP920 SECC 2MM 3 20 PIVOT90 5B11 RA 1 000 749 N A 2106658201P HINGE VP920 SECC 2mm 3 20 PIVOT90TL 5B11 RB 1 000 750 N A 2106658300P HINGE VP920 AJ HINGE H L 100MM 5B12 RA 1 000 751 N A 2106658301P HINGE VP920 AJ HINGE H L 100mm TL 5B12 RB 1 000 752 M SCW 0824 0122 2084730102P SCREW BND T M3 10 BNDT 5B13 4 000 753 M SCW 0824 0122 2084730102P SCREW BND T M3 10 BNDT 5B14 4 000 754...

Page 62: ... VS10927 CPT 6P80 1 000 795 DC 00004561 2002310541P GUARANT CARD VIEWSONIC VP SERIES QSG 6P84 1 000 796 M MS 0808 1316 2013222536P POLYETHY BAG 250mmX350mmX0 3t ADD PE LD 6P85 1 000 797 N A 2011172002P CARTON BOX VIEWSONIC VP720b VS10927 6P01 1 000 798 N A 2055632177P LABEL VP720B VS10927 M CPT 6P02 1 000 799 N A 2055613474P LABEL VIEWSONIC 4ms STICKER 103X50mm 6P04 1 000 800 M LB 0813 0856 205561...

Page 63: ...25 C CS 0603 COG 50V 22p J T C160 1 000 33 E C 0404 3815 2346410496P CAP CHIP 85 C CS 0603 Y5V 50V 0 1u Z T C162 1 000 34 E C 0404 3815 2346410496P CAP CHIP 85 C CS 0603 Y5V 50V 0 1u Z T C163 1 000 35 E C 0404 3815 2346410496P CAP CHIP 85 C CS 0603 Y5V 50V 0 1u Z T C164 1 000 36 E C 0404 3815 2346410496P CAP CHIP 85 C CS 0603 Y5V 50V 0 1u Z T C165 1 000 37 E C 0404 3815 2346410496P CAP CHIP 85 C C...

Page 64: ...10096P CAP CHIP 125 C CS 0603 COG 50V 10p J T C233 1 000 95 E C 0404 4828 2341110196P CAP CHIP 125 C CS 0603 COG 50V 100p J T C235 1 000 96 E C 0404 4828 2341110196P CAP CHIP 125 C CS 0603 COG 50V 100p J T C236 1 000 97 E C 0404 4828 2341110196P CAP CHIP 125 C CS 0603 COG 50V 100p J T C237 1 000 98 E C 0404 4828 2341110196P CAP CHIP 125 C CS 0603 COG 50V 100p J T C238 1 000 99 E C 0404 4828 234111...

Page 65: ...V6 SOD 80 5 2 6 0V VISHAY D119 RB 1 000 145 N A 2364505636P DIODE ZENER SMD BZV55 B5V6 2 SOD 80C PHILIPS D119 RC 1 000 146 E D 0403 1779 2364503996P DIODE ZENER SMD BZV55 C5V6 5 SOD 80C PHILIPS D120 RA 1 000 147 E D 0403 2808 2364505616P DIODE ZENER SMD TZMC5V6 SOD 80 5 2 6 0V VISHAY D120 RB 1 000 148 N A 2364505636P DIODE ZENER SMD BZV55 B5V6 2 SOD 80C PHILIPS D120 RC 1 000 149 N A 2364600496P DI...

Page 66: ...0 198 E Q 0402 1624 2360301696P XISTOR NPN R SMD PMBS3904 SOT 23 PHILIPS Q101 RB 1 000 199 E Q 0402 1608 2360300896P XISTOR NPN R SMD MMBT3904K SOT 23 FAIRCHILD Q101 RC 1 000 200 N A 2360501396P FET P CH SMD AP2305GN SOT23 APEC Q102 RA 1 000 201 N A 2360501996P FET P CH SMD AO3415 SOT 23 AOS Q102 RB 1 000 202 E Q 0402 1607 2360100596P XISTOR PNP R SMD MMBT3906 NL SOT23 FAIRCHILD Q103 RA 1 000 203 ...

Page 67: ...J T R138 1 000 261 E R 0405 6410 2253210296P RES CHIP 1 10W RC 0603 1 10W 1 0Kohm J T R145 1 000 262 E R 0405 6419 2253247296P RES CHIP 1 10W RC 0603 1 10W 4 7Kohm J T R147 1 000 263 E R 0405 6419 2253247296P RES CHIP 1 10W RC 0603 1 10W 4 7Kohm J T R149 1 000 264 E R 0405 6419 2253247296P RES CHIP 1 10W RC 0603 1 10W 4 7Kohm J T R150 1 000 265 N A 2253251096P RES CHIP 1 10W RC 0603 1 10W 51 ohm J...

Page 68: ...096P RES CHIP 1 10W RC 0603 1 10W 22 ohm J T R246 1 000 330 E R 0405 6603 2253222096P RES CHIP 1 10W RC 0603 1 10W 22 ohm J T R247 1 000 331 E R 0405 6603 2253222096P RES CHIP 1 10W RC 0603 1 10W 22 ohm J T R248 1 000 332 E R 0405 6603 2253222096P RES CHIP 1 10W RC 0603 1 10W 22 ohm J T R249 1 000 333 E R 0405 6413 2253220296P RES CHIP 1 10W RC 0603 1 10W 2 0Kohm J T R250 1 000 334 E R 0405 6410 2...

Page 69: ... MTL MEF 0 001uF 50V P 5 0 J T C832 1 000 400 N A 2302047391P CAP MTL MEF 0 047uF 50V P 5 0 J T C901 1 000 401 E C 0404 3473 2281410291P CAP CER CC 1000pF 50V Z5V Z T C903 1 000 402 E C 0404 3473 2281410291P CAP CER CC 1000pF 50V Z5V Z T C904 1 000 403 N A 2335347713P CAP ELE LOW ESR 105 C EC 470u 16V 8 12 P 5 0 T C906 1 000 404 E C 0404 1815 2281410491P CAP CER CC 0 1u 50V Y5V P 5 0 Z T C907 1 00...

Page 70: ...3230795P DIODE RECT 1H5G TG WS R 1 WILLAS D807 RA 1 000 467 N A 2363601395P DIODE SWITCH 1U4G 400V 1A R 1 PEC D807 RB 1 000 468 N A 2363515395P DIODE ZENER HZ27 2 26 2V 27 6V HITACHI D808 1 000 469 E D 0403 0531 2363600195P DIODE SWITCH 1N4148 DO 35 D809 RA 1 000 470 N A 2363601795P DIODE SWITCH 1N4148TA_NL DO 35 FAIRCHILD D809 RB 1 000 471 N A 2363601895P DIODE SWITCH 1N4148 DO 35 TSC D809 RC 1 0...

Page 71: ...UMPER 0 6 7 5mm J809 1 000 535 M WR 0828 0450 2428106075P JUMPER 0 6 7 5mm J810 1 000 536 M WR 0828 0450 2428106075P JUMPER 0 6 7 5mm J811 1 000 537 M WR 0828 0450 2428106075P JUMPER 0 6 7 5mm J812 1 000 538 M WR 0828 0450 2428106075P JUMPER 0 6 7 5mm J813 1 000 539 M WR 0828 0450 2428106075P JUMPER 0 6 7 5mm J814 1 000 540 M WR 0828 0450 2428106075P JUMPER 0 6 7 5mm J817 1 000 541 M WR 0828 0450 ...

Page 72: ...3526 2233427195P RES CBN 1 4 S RD 1 4WS 270 ohm J T52 R913 1 000 606 N A 2239268105P RES PRE 1 4 S RN 1 4WS 681 ohm F T R914 1 000 607 M WR 0828 0450 2428106075P JUMPER 0 6 7 5mm R915 1 000 608 M WR 0828 0478 2428106100P JUMPER 0 6 10 0mm R916 1 000 609 E R 0405 3526 2233427195P RES CBN 1 4 S RD 1 4WS 270 ohm J T52 R917 1 000 610 E R 0405 3213 2233410595P RES CBN 1 4 S RD 1 4WS 1 0Mohm J T52 R918 ...

Page 73: ...1611100P FET N CH AOU402 TO 251 AOS Q912 RB 1 000 676 N A 2361612100P FET N CH STD1955NL TO 251 SamHop Q912 RC 1 000 677 E TH 0416 0042 2229201212P THERMISTOR PTH SCK 103 THINKING R802 1 000 678 E 00003545 2245175406P MATEL GLAZE MG 1 4W 750Kohm J P 7 0 R805 1 000 679 N A 2235427806P RES MTL 1 RS 1W 0 27 ohm J P 7 0 R811 1 000 680 N A 2235427806P RES MTL 1 RS 1W 0 27 ohm J P 7 0 R812 1 000 681 N A...

Page 74: ...B07 1 000 745 N A 2028554602P NECK uP B ABS 94HB Midnight Gray 5B08 1 000 746 N A 2028554702P NECK DOWN F ABS 94HB Midnight Gray 5B09 1 000 747 N A 2028554802P NECK DOWN B ABS 94HB Midnight Gray 5B10 1 000 748 N A 2106658200P HINGE VP920 SECC 2MM 3 20 PIVOT90 5B11 RA 1 000 749 N A 2106658201P HINGE VP920 SECC 2mm 3 20 PIVOT90TL 5B11 RB 1 000 750 N A 2106658300P HINGE VP920 AJ HINGE H L 100MM 5B12 ...

Page 75: ...93 DC 00001586 2055613435P LABEL VIEWSONIC INSET PAGE 1280X1024 6P06 1 000 794 DC 00004562 2438501222P CD OWNER GUIDE VP720 1 SERIES VS10927 CPT 6P80 1 000 795 DC 00004561 2002310541P GUARANT CARD VIEWSONIC VP SERIES QSG 6P84 1 000 796 M MS 0808 1316 2013222536P POLYETHY BAG 250mmX350mmX0 3t ADD PE LD 6P85 1 000 797 N A 2011172002P CARTON BOX VIEWSONIC VP720b VS10927 6P01 1 000 798 N A 2055632177P...

Page 76: ...8 Exploded View And Exploded Parts List ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 73 ...

Page 77: ...ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 74 ...

Page 78: ...VP920 SECC T 2MM STAND 1 20 N A 2083740082P SCREW BND T M4 8 BND T 6 21 PL PD 0714 0113 2039819301P FOOT PAD RUBBER O20 2TMM SQUARE GRAIN 4 22 1 C 00004559 2027260501P DUST COVER DP A HINGE COVER ABS94HB BLAC 1 22 2 N A 2027260503P DUST COVER VP920 ABS 94HB Midnight Gray 1 23 1 C 00004560 2027260601P DUST COVER DP A VESA COVER ABS94HB BLACK 1 23 2 N A 2027260603P DUST COVER VP920 ABS 94HB Midnight...

Page 79: ...187P VGA CABLE 1 13 N A 2011192105P CARTON BOX 1 14 N A 2055632178P LABEL 1 15 N A 2055613474P LABEL 1 ViewSonic Model Number VS10929 1W Rev 1a Serial No Prefix PXY Item ViewSonic P N Ref P N Location Q ty 1 N A VP920b monitor 1 2 M MS 0808 1317 2013053000P POLYETHY BAG 1 3 P 00004576 2012183500P POLYFOAM R 1 4 P 00004577 2012183600P POLYFOAM L 1 5 BASE ASS Y 1 6 N A 2013054020P POLYETHY BAG 1 7 D...

Page 80: ...ITCHING POWER SUPPLY V901 LCD PANEL V Sync 5V 1 8V 2 5V 3 3V DDC SDA SDA SCL SDA I901 OZ9RR INVERTER AC 110 220V INPUT 12V ONBACKLITE RXO RXE CLK 5V 5V I601 TDA7496L AUDIO AMP OPTION P603 AUDIO IN P60 SPEAKE 12V ONBACKLITE R L R PANEL POWER H V 3 3V DDR DQ 31 0 DDR A 11 0 I103 DDR MEMORY IC 2 5V I104 24LC02 EEPROM DDC2 SDA DDC2 SCL ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 77...

Page 81: ...1 2 3 ADJ GND VOUT VIN R128 4 7K R135 10k R132 10K L105 NC D132 GS1B R255 NC 0 C132 NC L104 FEB_1206 C136 100u 16V C133 10uF 50V D124 1N4148 NC 1 2 C135 2200PF R124 1K L102 CX000800000 1206 D131 GS1B C138 100u 16V Q101 2N3904 1 2 3 R126 1K P101 9 8 7 6 5 4 3 2 1 C140 100nF C146 47uF_16V Q104 2N3906 1 2 3 C145 NC C142 100nF I105 LT1117 TO223 1 2 3 4 ADJ GND VOUT VIN 4 C141 100uF_16V C137 100u 16V D...

Page 82: ...30 10M L108 0 FEB_0603_19Ω R112 100 C111 12pF R103 100 D109 UDZ5 6B R104 2K D112 UDZ5 6B C116 100nF R102 100 D110 UDZ5 6B R113 100 D104 BAV99_SOT 3 1 2 D120 UDZ5 6B D105 BAV99_SOT 3 1 2 D106 BAV99_SOT 3 1 2 R106 75 C112 22pF R111 1K C101 5pF R122 NC R110 100 R123 NC D114 UDZ5 6B L110 0 FEB_0603_19Ω D111 UDZ5 6B C110 47nF R114 100 C103 5pF R108 75 C109 47nF D119 UDZ5 6B P103 DVI CON 25 1 2 3 4 5 6 ...

Page 83: ...TA 2 TCON 3 GPO 24 V3_DATA 3 TCON 4 GPO 25 V3_DATA 4 TCON 5 GPO 26 V3_DATA 5 TCON 7 GPO 27 V3_DATA 6 TCON 8 GPO 28 V3_DATA 7 VCC P GND G V1_CLK V1_DATA 0 V1_DATA 1 V1_DATA 2 V1_DATA 3 V1_DATA 4 V1_DATA 5 V1_DATA 6 V1_DATA 7 VCC P GND G GPO 9 DDC_SDA1b GPO 10 XOUT XIN GNDX G VDDX P VXTAL P TEST1PIN TEST2PIN GNDAPLL TSTPAD REXT TMDSV RX2P RX2N TMDSG RX1P RX1N TMDSV RX0P RX0N TMDSG RXCP RXCN TMDSG TM...

Page 84: ...9 C6 C7 K6 K7 D4 D6 D7 D9 K4 K9 E5 E6 E7 E8 F5 F6 F7 F8 G5 G6 G7 G8 H5 H6 H7 H8 L12 B3 B10 G3 G10 K8 K11 K12 L2 L3 L9 M2 M4 M5 L5 M6 M7 L8 M8 M9 M10 L7 K5 L6 DQ3 DQ4 DQ5 DQ6 DQ7 DQ0 DQ1 DQ2 DQ16 DQ17 DQ18 DQ19 DQ20 DQ21 DQ22 DQ23 DQ24 DQ25 DQ26 DQ27 DQ28 DQ29 DQ30 DQ31 DQ8 DQ9 DQ10 DQ11 DQ12 DQ13 DQ14 DQ15 VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VSSQ VSSQ VSSQ VSSQ VSSQ VSSQ VSSQ VSSQ VS...

Page 85: ... 5 P6 6 CLKO1 P6 7 X1 P3 2 INT0 P3 3 INT1 P3 4 T0 P3 5 T1 P7 6 CLKO2 P7 7 NC NC NC NC NC NC DA0 P5 0 DA1 P5 1 DA2 P5 2 DA3 P5 3 DA4 P5 4 R194 4 7K C237 100pF D115 NC 1N4148 1 2 R191 4 7K C238 100pF Q107 2N3906 1 2 3 R211 4 7K C239 100pF D121 1N4148 1 2 C240 100pF R199 4 7K C241 100pF C243 100pF C221 0 1u C242 100pF D122 1N4148 1 2 C244 100pF R185 10K I104 24C02 1 2 3 4 5 6 7 8 A0 A1 A2 GND SDA SCL...

Page 86: ...S L P603 AUDIO INPUT GREEN 4 5 3 2 1 P603 pitch 2mm 1 2 3 C605 470U 16V C616 1n I601 TDA7496L 9 7 6 5 4 8 10 20 11 12 19 17 16 14 15 18 13 3 2 1 INR VAROUT_R VOLUME VAROUT_L INL NC SVR GND7 STBY MUTE GND6 OUTL VP2 OUTR VP1 GND5 GND4 GND3 GND2 GND1 C617 1n R613 10K L606 Bead L603 Bead 0805 R612 10K Q601 2SC945 SOCKET P601 TO SPEAER 4 3 2 1 L L R R L601 Bead 0805 R622 100 L602 Bead 0805 C606 470U 16...

Page 87: ...1 1000uF 10V T801 ER28 3 5 4 1 7 8 9 11 12 10 R833 1M 1 2WS R830 20K 1 L802 ET 20 R825 13K 1 C810 100uF 35V Q802 2SA1020Y D820 31DQ06 L805 ET 20 C808 1000P D803 2A07 D808 HZ27 2 R801 NC D804 2A07 D801 2A07 L804 5uH C809 33uF 25V D802 2A07 C803 4700pF R803 1M 0 5W L806 BEAD D806 UF4007 L823 BEAD CORE R807 10 R808 24 3K 1 R831 110K 1 Q801 AP04N70BF R812 0 27 1W C806 0 01uF 250V D809 1N4148 R809 47 R...

Page 88: ...C911 47nF D919 NC R934 1M D910 1N4148 Q911 AOU402 R928 NC C902 10P 3KV R918 1M Q912 AOU402 R930 5 1K R938 10K C910 0 1uF C928 2 2uF 35V R911 10 R927 2 2K 1 R912 10 R914 681 1 C915 470uF 16V C920 1800pF R935 JUMPER L901 BEAD R915 JUMPER D902 1N4148 C926 1000P R937 909 1 R909 2 2K 1 C927 1000P R913 270 C913 330P C924 47nF R917 270 P901 1 2 C912 27P R936 909 1 Q913 2N7002 I902 78L05 3 1 2 IN OUT GND ...

Page 89: ...11 PCB Layout Diagrams 11 1 MAINPCBTOPVIEW ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 86 ...

Page 90: ...11 2 MAIN PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 87 ...

Page 91: ...11 3 CON PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 88 11 4 CON PCB BOTTOM VIEW ...

Page 92: ...11 5 POWER PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 89 ...

Page 93: ...11 6 POWER PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 90 ...

Page 94: ...ty Systems Processes marc maupin viewsonic com d o o G t n e l l e c x E Precautions and Safety Notices 1 8 Exploded Diagram and Exploded Parts List 7 Recommended Spare Parts List Adjustment Procedure 2 Specification 5 4 Circuit Description 3 6 Troubleshooting Flow Chart Front Panel Function Control Description 9 Block Diagram 10 Schematic Diagrams 11 PCB Layout Diagrams Service Manual Content Ser...

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