ViewSonic VLCDS26064-4W User Manual Download

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Model No.

20"

Color TFT LCD Display

Service Manual

ViewSonic

VP20

ViewSonic

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

(

VP2

000s

_SM_

892

Rev. 1

Mar.

200

)

VLCDS26064-4W

Summary of Contents for VLCDS26064-4W

Page 1: ...Model No 20 Color TFT LCD Display Service Manual ViewSonic VP2000s ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 VP2000s_SM_892 Rev 1b Mar 2005 VLCDS26064 4W ...

Page 2: ... 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 Revision History Trademarks ViewSonic is a registered trademark of ViewSonic Corporation All other trademarks used within this document ...

Page 3: ...Troubleshooting Flow Chart 9 Block Diagram 10 Schematic Diagrams 7 Recommended Spare Parts List 1 Precautions and Safety Notices 5 Adjustment Procedure 8 Exploded Diagram and Spare Parts List 11 PCB Layout Diagrams 1 3 13 19 20 38 41 51 53 54 61 ii ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 4: ...cause of the high voltage used in the inverter circuit the voltage is exposed in such areas as the associated transformer circuits 4 LCD Module Handling Precautions 4 1 Handling Precautions 1 Since front polarizer is easily damaged pay attention not to scratch it 2 Be sure to turn off power supply when connecting or disconnecting input connector 3 Wipe off water drops immediately Long contact with...

Page 5: ...he LCD contains a small amount of mercury Please follow local ordinances or regulations for disposal 13 The LCD module contains a small amount of materials having no flammability grade The LCD module should be supplied with power that complies with the requirements of Limited Power Source IEC60950 or UL1950 or an exemption should be applied for 14 The LCD module is designed so that the CCFL in it ...

Page 6: ...te Sync TTL level Polarity Positive or Negative d H V composite Sync TTL level Polarity Positive or Negative e SOG Sync level 0 3Vp p Input connector a Analog D sub 15pin x 1 b Digital DVI I 29 pin x 1 Analog Digital c USB up stream x1 VP201s b only Output connector a USB down stream x 4 VP201s b only Display data channel DDC2B Signal frequency range a Horizontal a 1 Analog 30KHz 92KHz a 2 Digital...

Page 7: ...glish CD ROM Warranty card HD15 HD15 cable DVI D DVI D cable 3 Regulatory Standard certification Regulatory standards UL cUL FCC B CB CE ENERGY NOM TUV GS TUV ERGO covers ISO13406 2 MPRII TCO 03 for VP201s VP2000s TCO99 for VP201b NEMKO SEMKO DEMKO FIMKO GOST R 20 ORIGINAL COPIES HYGIENIC SASO PCBC VCCI BSMI CCC PSB C TICK TUV S Note 1 Luminance variation FIG 1 Luminance test points L 408mm W 306m...

Page 8: ...I A DVI D Color Adjust SRBG 9300K 6500K default 5400K 5000K User Color R G B Information Resolution Horizontal Frequency Vertical Frequency Model Number Serial Number Web Site Manual Image Adjust H V Position2 H Position V Position H Size2 Fine Tune2 Scaling3 Fill Screen Fill Aspect Ratio4 1 1 Setup Menu Language English French German Spanish Italian Finnish Japanese Traditional Chinese Simplified...

Page 9: ...e pattern at 100IRE 4 2 Adjust R G and B Gain to meet following chromaticity spec 5400K x 0 335 0 005 y 0 350 0 005 Y 180cd m2 Both analog DVI 5 5000K alignment 5 1 Input 1600x1200 60Hz full white pattern at 100IRE 5 2 Adjust R G and B Gain to meet following chromaticity spec 5000 K x 0 346 0 005 y 0 359 0 005 Y 180cd m2 Both analog DVI 6 sRGB alignment 6 1 Input 1600x1200 60Hz full white pattern ...

Page 10: ...ce test 3 1 Picture quality Test pattern signal The following image faults shall not be conspicuous 1 100IRE white raster pattern Seam Noise Beat Flicker 2 Cross hatch pattern Ringing Overshoot Smear V jitter H jitter 3 Color bar Color distortion Noise Beat Color tangent 4 Gray scale 16 steps Noise Beat Gamma distortion 5 1 dot ON 1 dot OFF pattern Noise Flicker 6 40IRE gray raster Noise Beat Gamm...

Page 11: ...On Resolution Notice Enabled 720x400 640x400 720x400 User color 50 Language English Clear burn in mode Clear user mode table 4 3 Factory shipment settings 4 3 1 Main power switch Off 4 3 2 AC power button Off 4 3 3 Others settings same as All mode recall settings 5 Power management tests 5 1 Power consumption test table Monitor status LED color Video signal Power consumption Recover time Normal Un...

Page 12: ...Each port must pass the test 7 2 Use a PC to check the USB VID which should be 0543 and the PID which should be 1169 7 3 For USB test settings see Appendix E 8 For auto alignment it is necessary to execute the auto image adjust command for 3 DOS modes 640x350 720x400 640x400 9 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 13: ...0 480 480 480 480 400 600 V front porch Lines 37 12 3 10 3 9 1 1 12 1 Mode No 11 12 13 14 15 16 17 18 19 20 Mode Name VESA 800 x 600 VESA 800 x 600 VESA 800 x 600 VESA 800 x 600 MAC 832 x 624 VESA 1024 x 768 VESA 1024 x 768 XGA 1024 x 768 VESA 1024 x 768 VESA 1024 x 768 Horizontal Freq KHz 37 879 48 077 46 875 53 674 49 727 48 363 56 476 58 099 60 023 68 677 Video clock Freq 40 000 50 000 49 500 5...

Page 14: ... 1688 1688 1728 1650 2160 H sync Dots 128 112 136 112 144 160 40 192 H back porch Dots 144 312 224 248 248 224 270 304 H active Dots 1152 1280 1280 1280 1280 1280 1280 1600 H front porch Dots 32 96 88 48 16 64 60 64 Vertical Freq Hz 75 062 60 000 74 857 60 020 75 025 85 024 60 000 60 000 Sync Polarity V total Lines 915 1000 1005 1066 1066 1072 750 1250 V sync Lines 3 3 4 3 3 3 5 3 V back porch Lin...

Page 15: ... 20 20 20 20 20 00 00 110 00 FC 00 56 50 32 30 30 30 73 120 0A 20 20 20 20 20 00 1F i 128 bytes of EDID code for VP2000s digital 0 1 2 3 4 5 6 7 8 9 0 00 FF FF FF FF FF FF 00 5A 63 10 1A 23 01 01 01 01 01 0E 01 03 20 80 29 1F 78 2E 60 E5 A3 57 4B 30 9C 25 11 50 54 BF EF 80 A9 40 40 81 80 81 40 71 4F 61 59 45 59 50 31 59 31 0A 48 3F 40 30 62 B0 60 32 40 40 C0 13 00 98 32 11 00 70 00 1E 00 00 00 FF ...

Page 16: ...ols Scrolls through menu options and adjusts the displayed control Also a shortcut to display the Contrast adjustment control screen Power On Off Displays 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 Displays the Main Menu or exits the control screen ...

Page 17: ... 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 video signal 1600 x 1200 60 Hz to the LCD display Look for instructions on changing the refresh rate in your graphics card s user guide If necessary make small adjustments using H POSITION and V POSITION until the screen image is complet...

Page 18: ... the user to toggle between analog and digital input signals Color Adjust provides several color adjustment modes including preset color temperatures and RGB mode which allows red R green G and blue B to be adjusted independently The factory setting for this product is 6500K 6500 Kelvin 9300K Adds blue to the screen image for cooler white used in most office settings with fluorescent lighting 6500...

Page 19: ...on is 1600 x 1200 and the refresh rate is 60 Hertz Manual Image Adjust displays the Manual Image Adjust menu The Manual Image Adjust controls are explained below Horizontal Size adjusts the width of the screen image Horizontal Position moves the screen image left or right Vertical Position moves the screen image up or down 5400K Adds green to the screen image for a darker color 5000K Adds blue and...

Page 20: ... display will do a one time detection for available inputs when first powered on and choose among the available signals bas Scaling adjusts a video input signal at a resolution other than 1600 x 1200 to the native screen size using the following options 1 1 adjusts the video signal so that the height and width of the picture are the same Fill all adjusts the video signal to fill the screen Fill As...

Page 21: ...n the On Screen Display background on or off OSD Pivot This function is used to rotate the OSD menu when the display is changed from Landscape to Portrait mode OSD Position allows the user to move the on screen display menus and control screens OSD Timeout sets the length of time an on screen display screen is displayed For example with a 15 second setting if a control is not pushed within 15 seco...

Page 22: ...nd video processing IC for Liquid Crystal Display LCD monitors and televisions incorporating Picture in Picture up to WUXGA output resolutions The gm1601H provides all key IC functions required for image capture processing and display timing control On chip functions include a high speed triple ADC and PLL Ultra Reliable DVI receiver high quality zoom and shrink scaling engines Motion Adaptive De ...

Page 23: ...off signal on and off erratic or incorrect frequency noisy inputs any possible combination of unplugging of power or signal cables or any setting of user accessible controls Likewise the monitor should survive extended periods of operation with line voltage reduced below the specified minimum 7 An isolation transformer should be used when performing alignment and tests Portions of the power supply...

Page 24: ...tory mode In OSD select Auto BI function Select S RGB 9300K 6500K 5400K or 5000K to adjust RGB gain then save adjustments Select the Copy TODS Copy TODA and Copy TODD functions Download new ISP program Return to initial mode by pushing 1 up down AC on off for 3 seconds Push the 1 key to exit the OSD Execute the All mode recall function by pushing the ISP new program option 21 ViewSonic Corporation...

Page 25: ... 2 4 2 Adjust R G and B Gain to meet following chromaticity spec 5400K x 0 335 0 005 y 0 350 0 005 Y 180cd m2 Both analog DVI 5 2 2 5 5000K alignment 5 2 2 5 1 Input 1600x1200 60Hz full white pattern at 100IRE 5 2 2 5 2 Adjust R G and B Gain to meet following chromaticity spec 5000 K x 0 346 0 005 y 0 359 0 005 Y 180cd m2 Both analog DVI 5 2 2 6 sRGB alignment 5 2 2 6 1 Input 1600x1200 60Hz full w...

Page 26: ...r to Factory mode 1 key DC power on 5 3 3 Enter Factory Mode Press up key 5 3 3 1 Set the color temperature mode to sRGB and press the 2 Key The R G B Gain value will beadjusted note the values 5 3 3 2 Repeat for each color temperature 5 3 4 Install Gprobe 5 3 5 Install Gprobe_1601 23 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 27: ...5 3 6 Click Gprobe 4 24 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 28: ...25 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 29: ...5 3 7 Connect ISP Tool 26 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 30: ...5 3 7 1 ISP Tools 5 3 7 2 Connect ISP Tool to COM1 Connect to COM 1 Connect to D Sub Output 12V COM port 27 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 31: ...5 3 7 3 Connect ISP Tool to Display Connect to COM 1 D Sub 28 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 32: ...Connect to D Sub Signal cable 29 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 33: ...5 3 8 Confirm connection setup Gprobe setting 30 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 34: ...5 3 8 1 Open BATCH file in Gprobe 4 Set to SERIAL1 Set to COM1 Set to 115200 31 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 35: ...32 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 36: ...5 3 9 Open VP2000BATCH 33 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 37: ...5 3 10 Key in BATCH VP2000BATCH TXT 34 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 38: ...5 3 11 Press Enter key 35 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 39: ... 13 EEPROM initial 1key up key down key AC Power off on 5 3 14 Execute Auto White Balance 5 3 14 1 Set LCD Monitor to Burn In mode Down key 2 key DC power on ISP finishes 36 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 40: ...and save 5 Select CopyToDA CopyToDD functions 6 Push the 1 key to exit the OSD 7 Execute the All mode recall function Push the 2 key DC power on 1 Set LCD Monitor to Burn In mode Down key 2 key DC power on 2 Input Cross hatch 640 x 350 70 Hz 3 Execute auto adjust 4 Input Cross hatch 640 x 400 70 Hz 5 Use the hot key function 1 key 2 key to change mode to 640 x 400 70 7 Input Cross hatch 720 x 400 ...

Page 41: ...51 and Adaptor Verify that C262 positive is at 5V Failure point FB251 FB251 failure Failure point D251 IC251 L251 Q255 failure Check 1 IC255 is O P 3 3V 2 IC253 is O P 1 8V 3 IC256 is O P 2 5V 4 IC252 is O P 3 3V Yes Yes Yes No No No Failure point IC255 IC253 IC252 IC256 No 6 Troubleshooting Flow Chart 38 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 42: ...r on and DC power on Check that C265 positive is at 18V Is LED illuminated Follow item 6 1 Q258 D252 L263 L254 Verify that C276 pin8 is at 18V Q251 Q262 failure Inverter failure Yes Yes Yes Yes No No No 39 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 43: ...nal cable is disconnected Yes Yes No IC606 IC607 Failure 6 4 Keypad does not work Verify that the cable between the interface board and key board is properly connected Q401 Q402 Q403 Q404 failure Failure point The keypad is disconnected Yes Failure point No 40 ViewSonic Corporation Confidential Do Not Copy VP2000s D sub DVI A or DVI D is normal ...

Page 44: ...T 1 L20CBR05ACA M MS 0808 8624 3211030700 1 48 PE FILM t 0 02mm W 500 M MS 0808 5135 3520082400 0 04 49 SPONGE EVA 5 8 5 T 5 BLK M MS 0808 2276 3240160801 1 50 SWITCH MEMBRANCE PET 99 5 9 VP181 M SW 0815 0224 3000725101 1 51 TAPE AL FOIL W 25 80023 CATERON M MS 0808 1679 3222201300 0 18 52 TAPE AL FOIL W 50 TAPE AL 35FR 3M Added 03 01 05 M 00001850 3222201510 0 11 53 TAPE PE W 50 VIEWSONIC SECURIT...

Page 45: ... NO5 M MS 0808 2660 3470903500 1 70 HANDLE PE 209 18 T1 8 TOP NO501 M MS 0808 2662 3470903600 1 71 NAME PLATE VSC 3 BIRD LOGO AL 11 0 M MS 0808 8556 3200649100 1 72 PLASTIC STRIP W 12 T 5 BLACK PL SP 0723 0002 3520142700 1 73 POWER KNOB POM 901U 5140 S8LFB1LS PL NB 0707 1075 3360627100 1 74 RUBBER PAD 22 4 T3 BLK PL PD 0714 0140 3240970900 1 75 RUBBER PAD 25 10 1 5 BLACK STICK Added 03 01 05 M MS ...

Page 46: ...R 3M 0 11 34 M MS 0808 1680 3222400310 TAPE W 16 897 3M 0 03 35 M MS 0808 8557 3240055600 CONDUCTIVE TAPE AL W50 L55 1120 1 36 M MS 0808 2276 3240160801 SPONGE EVA 5 8 5 T 5 BLK 1 37 M MS 0808 5271 3240498900 RUBBER PAD 25 10 1 5 BLACK STICK 1 38 M MS 0808 2631 3240946900 RUBBER SILICON 12 12 T5 2 39 PL PD 0714 0140 3240970900 RUBBER PAD 22 4 T3 BLK 1 40 M MS 0808 0016 3241127301 INSULATOR PC 130 ...

Page 47: ...0714 0101 3240968900 RUBBER PAD 20 20 T3 BLK 1 113 M MS 0808 8632 3460150703 BRACKET BASE2 SECC 173 190 4 T2 VP201 1 114 M MS 0808 8635 3460151002 BRACKET BASE3 SECC 173 190 4 T2 VP201 1 115 M MS 0808 8636 3460151102 BRACKET BASE1 SECC 173 190 4 T2 VP201 1 116 N A 3790184400 BKT BASE FOOT ASSY L20CBR05ACB 2 117 M SCW 0824 0783 3105280400 SCREW M M3 0 5 4 FLAT C S20C ZN NL 2 118 PL PD 0714 0100 324...

Page 48: ...7 N A 1200758000 CAP MO DP 50V 1U K X7R TP R C205 1 188 N A 144146819103 CAP AL 25V 680U M 10 16 TP5 C202 C203 C204 0 189 N A 144146819107 CAP AL 25V 680U M 10 16 TP5 C202 C203 C204 3 190 E C 0404 3852 144162201400 CAP AL 50V 22U M 5 11 TP5 C105 1 191 N A 144164701400 CAP AL 50V 47U M 6 3 11 TP5 C108 1 192 N A 145401510005 CAP AL 400V 150U M 18 35 5 C101 1 193 N A 145401510033 CAP AL 400V 150U M 1...

Page 49: ...0K F 0603 R52 1 259 N A 0341095300 RES CH 1 10W 221K F 0603 R17 1 260 N A 0341104300 RES CH 1 10W 470K F 0603 R15 1 261 N A 0341139300 RES CH 1 10W 910 F 0603 R11 R23 R27 R31 R7 5 262 E R 0405 7038 0341421300 RES CH 1 10W 560 F 0603 R72 R73 R74 R76 R77 5 263 E R 0405 6685 0343103300 RES CH 1 10W 10K J 0603 R13 R33 R35 R81 4 264 E R 0405 7050 0343104300 RES CH 1 10W 100K J 0603 R1 R19 R20 R21 R25 R...

Page 50: ...0 CABLE ASSY 1007 26 7HOLES DAC 18B014 1 314 DC 00001459 5012046900 CARD ATTENTION SHEET 190 125 VSC 20 21 1 315 DC 00001473 5012047200 ARD INFORMATION 190 125 EPA 1 316 M LCD 0826 0205 5052000450 LCD 20 1 TFT PANEL UXGA 1 317 B 00001844 5600110395 PWB ASSY I F BD L20DBR 05GAB 1 318 E R 0405 7124 0313000000 RES CH 1 4W ZERO J 1206 R670 1 319 N A 0341052300 RES CH 1 10W 4 7K F 0603 R260 R261 2 320 ...

Page 51: ...3 0 353 N A 0730060412 CRYSTAL 14 318MHZ 30PPM 30PF 49US X401 1 354 N A 0841110802 FUSE F P 5A 125V UL CSA F251 1 355 E C 0404 5322 149024701208 CAP AL CP 6 3V 47U M 5 5 5 C267 C278 C401 C411 C424 C 433 C441 C449 C457 C477 10 356 N A 149024701233 CAP AL CP 6 3V 47U M 5 5 4 C267 C278 C401 C411 C424 C 433 C441 C449 C457 C477 0 357 N A 149101021533 CAP AL CP 10V 1KU M 10 10 C262 C263 2 358 N A 149122...

Page 52: ... 5V 5A TO 252 IC256 1 391 N A 2500082837 IC REGU LDO 3 3V 5A TO 252 IC252 1 392 E IC 0401 2927 2500088636 IC VOL DETECTOR 4 4V SOT 23 IC402 1 393 N A 2500161537 IC REGU LDO 1 8V 5A TO 263 IC253 1 394 N A 2510019129 IC PWM SOP 16P IC251 1 395 N A 2530235227 IC IMAGE PROCESSOR PBGA 416B IC401 1 396 N A 2600100353 IC TRIPLE 2 1 MULTIPLEXERS TSSOP 24P IC607 1 397 E IC 0450 0050 2610015107 IC 2 CHANNEL...

Page 53: ...474 3075415766 CONN FFC FPC BOTTOM 30P P1 0 SMT 1 425 N A 3075415866 CONN FFC FPC BOTTOM 8P P1 0 SMT 1 426 M LB 0813 0913 3202005900 LABEL SERIAL 42 11 SONY 1 427 M LB 0813 0914 3202009100 LABEL REGISTRATION 40 16 1 428 M LB 0813 0915 3202215900 LABEL MCU 11 11 POLYESTER 50 0 125 50 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 54: ...8 Exploded Diagram and Spare Parts List 51 ViewSonic Corporation Confidential Do Not Copy VP2000s ...

Page 55: ...LE NYLON66 94V2 41 3 17 M CV 0830 2472 3360245300 COVER BOTTOM ABS 41 S0LBA1AT 1 18 M MS 0808 8632 3460150703 BRACKET BASE2 SECC 173 190 4 T2 VP201 1 19 M MS 0808 8635 3460151002 BRACKET BASE3 SECC 173 190 4 T2 VP201 1 20 M MS 0808 8636 3460151102 BRACKET BASE1 SECC 173 190 4 T2 VP201 1 21 PL PD 0714 0101 3240968900 RUBBER PAD 20 20 T3 BLK 1 22 PL PD 0714 0100 3240957000 RUBBER PAD OD20 T4 BLACK 2...

Page 56: ...9 Block Diagram 53 ViewSonic Corporation Confidential Do Not Copy VP2000s ENABLE ...

Page 57: ...10 Schematic Diagrams 54 ViewSonic Corporation Confidential Do Not Copy VP2000s Power Board ...

Page 58: ...55 ViewSonic Corporation Confidential Do Not Copy VP2000s Main Board ...

Page 59: ...56 ViewSonic Corporation Confidential Do Not Copy VP2000s Main Board ...

Page 60: ...57 ViewSonic Corporation Confidential Do Not Copy VP2000s Main Key Board ...

Page 61: ...58 ViewSonic Corporation Confidential Do Not Copy VP2000s Power Board ...

Page 62: ...59 ViewSonic Corporation Confidential Do Not Copy VP2000s Inverter Board ...

Page 63: ...11 PCB Layout Diagrams 60 ViewSonic Corporation Confidential Do Not Copy VP2000s Main Board ...

Page 64: ...61 ViewSonic Corporation Confidential Do Not Copy VP2000s Main Board Bottom ...

Page 65: ...62 ViewSonic Corporation Confidential Do Not Copy VP2000s Power Board ...

Page 66: ...63 ViewSonic Corporation Confidential Do Not Copy VP2000s Power Board Bottom ...

Page 67: ...64 ViewSonic Corporation Confidential Do Not Copy VP2000s Inverter Board ...

Page 68: ...65 ViewSonic Corporation Confidential Do Not Copy VP2000s Inverter Board Bottom ...

Page 69: ...y 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 Spare 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 Service...

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