ViewSonic VX900-2 User Manual Download

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Service Manual

ViewSonic

VX900-2

Model No.

VLCDS26105-2W

” Color TFT LCD Display

(VX900-2_SM_637 - Rev.1a-Feb 2003)

ViewSonic

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

Summary of Contents for VX900-2

Page 1: ...Service Manual ViewSonic VX900 2 Model No VLCDS26105 2W 19 Color TFT LCD Display VX900 2_SM_637 Rev 1a Feb 2003 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583...

Page 2: ...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...

Page 3: ...overheating Do not block ventilation slots and openings with objects or install the display in a place where ventilation may be hindered z Do not install this display near a motor or transformer wher...

Page 4: ...n Control Description 23 2 1 User control functions 23 2 2 OSD operation flow 24 3 Circuit Description 33 3 1 Interface Board 33 3 2 Audio Board 37 4 Troubleshooting Flow Chart 40 4 1 Figure of Wavefo...

Page 5: ...jw ViewSonic Corporation Confidential Do Not Copy VX900 2 8 Schematic Daigrams 59 7 Explode Diagram and Mechanical Parts List 58 Appendix 10 Recomended Spare Parts List 69 Reader s Response 11 Complet...

Page 6: ...24 dot SXGA 250 cd m typ 200 min 600 1 typ 400 min 16 777 216 Up 85 Down 85 min Left 85 Right 85 min CR 10 1 Anti Glare Input Signals RGB Digital Analog 0 7 Vp p 75 Separate sync Composite sync Sync O...

Page 7: ...audio cable connected Current Rating AC input DC input 0 7A 4 0A AC 100 240V DC 12 0V Dimensions Net Gross 442 0 W x 474 6 H x 180 6 D mm 565 0 W x 525 0 H x 260 0 D mm Weight Net Gross 7 5Kg 10 2Kg E...

Page 8: ...I CCIB EMC CCEE PSB Singapore Safety TCO 99 NOM and Argentina IRAM thru TUV OSD Language English French German Spanish Finnish Italian Japanese Traditional Chinese Simplified Chinese Others Tilt Angle...

Page 9: ...TFT MVA Dot pitch 0 098 H x 0 294 V mm Pixel pitch 0 294 H x 0 294 V mm Dot number 1280 x 1024 x 3 dots Backlight Edge lighting type with 4 CCFLs Cold Cathode Fluorescent Tube Brightness 200 cd m2 min...

Page 10: ...0 Hz 20 KHz 2 3 3 5 Connector PC99 requirement Audio in Lime Green pantone 577C 2 3 3 6 Cable length 1 8 m 2 3 3 7 Audio DPMS Speakers stay on when the rest of the monitor is in power saving 2 3 3 8 S...

Page 11: ...d 5 Reserved No connection 6 DDC CLK DDC2B Clock 7 DDC DAT DDC2B Data 8 Reserved 8 Reserved No connection 9 RX1 TMDS negative differential input channel 1 10 RX1 TMDS positive differential input chann...

Page 12: ...Hz 70 0 1 0Hz 720X400 70 Dos text MOD 3 31 468 1 0KHz 59 94 1 0Hz 640X480 60 VESA STANDARD MOD 4 35 01 1 0KHz 66 67 1 0Hz 640X480 66 MAC MOD 5 37 86 1 0KHz 72 81 1 0Hz 640X480 72 VESA STANDARD MOD 6 3...

Page 13: ...Horizontal Width 376 32 mm typical Vertical Width 301 06 mm typical 2 6 2 Optical Characteristics General qualities The following data was measured by BM7 of TOPCON data are panel optical data for an...

Page 14: ...Viewing angle AU 0 AR 0 Warm Up time minimum 30 minutes Measuring instrument TOPCOM BM 7 Luminance Meter Measuring distance 500 mm Measuring angle 2 BM 7 500mm 2 Degree Notes Note 1 Contrast ratio is...

Page 15: ...QEM Q ENQEM 4 0QTOCN Note 3 Definition of response time is as follows Response time is measured when the display data is changed from white to black 21 ViewSonic Corporation Confidential Do Not Copy V...

Page 16: ...OFF Note 4 Judge points for brightness uniformity Brightness uniformity is judged at nine 9 points on display area 9 3 5 7 1 128 512 896 98 384 670 6 2 4 8 BUNI Bmin Bmax Bmax Maximum Brightness Bmin...

Page 17: ...1 Minimum Luminance of white center 250 nits Typical 200 nits Minimum White Uniformity 75 5 points measurement Chromaticity values red green blue center x 0 030 y 0 030 Color temperature x 0 323 0 03...

Page 18: ...ty When the input display mode is not 1280x1024 the image area is changed as follows Flex Scan Input display Expanded Rate Expanded Mode Mode Resolution Horizontal Vertical Resolution Expansion 1 640x...

Page 19: ...Appendix III 3 4 2 Bar Code Number Label Carton Box Material Art Paper Color White Base Black Letter Size 76 W X 76 H mm Location Carton Box Side Wall Contents Appendix III 3 4 3 Serial Number Label...

Page 20: ...h 40 C Humidity 20 To 85 39 degree welt bulb Altitude 0 3 000 Meter 5 2 Non operating Conditions Temperature 20 Through 60 C Humidity 5 To 85 39 degree welt bulb Altitude 0 12 000 meter 6 Factory sett...

Page 21: ...endix I Preset Signal Timings H total H pulse H front H back Horizontal V total V pulse V front V back V active Vertical H Video H active V Video 27 ViewSonic Corporation Confidential Do Not Copy VX90...

Page 22: ...Negative Negative Negative Negative V sync Polarity Negative Positive Negative Negative Negative Negative Negative H resolution dots 640 720 640 640 640 640 640 V resolution lines 350 400 480 480 480...

Page 23: ...084 78 750 94 500 108 74 250 135 H sync Ths 136 136 96 96 112 40 144 H back porch Thb 144 160 176 208 248 270 248 Count num H total Thd 1328 1344 1312 1376 1688 1658 1688 H front porch Thf 24 24 16 4...

Page 24: ...Negative Negative Negative Negative V sync Polarity Negative Positive Negative Negative Negative Negative Negative H resolution dots 640 720 640 640 640 640 640 V resolution lines 350 400 400 480 480...

Page 25: ...997 60 02 60 00 Pixel rate MHz 78 084 78 750 94 500 108 74 250 H sync Ths 136 96 96 112 40 H back porch Thb 160 176 208 248 270 Count num H total Thd 1344 1312 1376 1688 1658 H front porch Thf 24 16...

Page 26: ...31 31 31 31 31 11 11 221 11 GD 11 67 69 4 41 41 3E 43 231 1B 31 31 31 31 31 11 BE Digital 239 CZUFT PG FEJE DPEF 1 2 3 4 5 6 7 8 9 1 11 GG GG GG GG GG GG 11 6B 74 21 22 1 12 12 12 12 12 1D 12 14 31 91...

Page 27: ...Serial No Label UPC MODEL NUMBER VLCDS26105 2W SERIAL NUMBER A24YYWWnnnnn 7 66907 80262 7 ViewSonic VX900 2 M Made In China ViewSonic VX900 Model Number VLCDS26105 2W Serial Number A24YYWWnnnnn 33 Vi...

Page 28: ...OSD will toggle the digital input port and analog input port to display 3 Press up and down button simultaneously will reset the contrast and brightness to default 4 Press 1 button will enter OSD mai...

Page 29: ...utton exit the screen must exit the OSD to save the settings Auto Image Adjust automatically sizes centers and fine tunes the video signal to eliminate waviness and distortion Press the 2 button to co...

Page 30: ...and contrast Brightness adjusts backlight brightness level of screen image increase brightness decrease brightness Input Select press or button to select Input Source Audio press or button to scroll...

Page 31: ...s more of the sound to the left speaker directs more of the sound to the right speaker Bass Treble adjusts the high treble and low bass frequency audio output Press 2 button to select bass adjustment...

Page 32: ...most office settings with fluorescent lighting 6500K Adds red to screen image for warmer white and richer red 5400K Adds green to screen image for a darker color 5000K Adds blue and green to screen i...

Page 33: ...on H Position moves screen image left or right move screen image to left moves screen image to right Press the 2 button to toggle between H or V Position V Position moves screen image up or down move...

Page 34: ...reen image decreases Width of screen image increases width of image Fine Tune Sharpness adjusts the clarity of a non SXGA 1280 x 1024 RGB signal Press or to adjust Setup Menu 3 ViewSonic Corporation C...

Page 35: ...or button to select the Enable or Disable the Resolution Notice OSD Position press the 2 button to select the OSD Position press the 2 button to select the OSD H Position or OSD V Position OSD H Posit...

Page 36: ...osition moves OSD down moves the OSD up OSD Time out sets the length of time the On Screen Display screen is displayed before exiting OSD Background 42 ViewSonic Corporation Confidential Do Not Copy V...

Page 37: ...Number Serial Number Web Site Manual Image Adjust H V Position Horizontal Size Fine Tune Sharpness Setup Menu Language Select Resolution Notice OSD Position OSD Time out OSD Background Memory Recall...

Page 38: ...IC402 IC501 DVI_SCL SCL SDA IC404 DATA EEPROM BOARD KEY AUDIO CN302 IC603 74F14 HD 15 CN601 HS VS 15PINS CN600 RGB VGA_SDA VGA_SCL 5V DVI D BACKLIGHT_EN BACKLIGHT_CONTROL 2 5V 3 3V 3 3V 3 3V LVDS IC50...

Page 39: ...Pin 114 controls Inverter enable or disable 45 ViewSonic Corporation Confidential Do Not Copy VX900 2 Pin 113 enable vcc for panel Pin 125 send a HI signal when audio is invalid send a LOW signal whe...

Page 40: ...is recommended as internal PLL and logic circuits derive the required clock frequencies from this single source by default Other crystal frequencies may be used but require custom bootstrapping and p...

Page 41: ...nded to simplify the gm5120 system software implementation by providing embedded macro functions such as OSD menu configurations It is not intended to replace the system microprocessor An arbitration...

Page 42: ...put to LVDS output drivers The frequency of CLKOUT is the same as the input clock CLKIN The SN75LVDS83 requires no external components and little or no control The data bus appears the same at the inp...

Page 43: ...r utilizing CMOS Technology Volume Bass Treble Balance Front Rear Fader Processor are incorporated into a single chip Loudness function and Selectable input gain are also provided to build a highly ef...

Page 44: ...LFout O Left front speaker output 26 Dgnd Digital ground 27 Date I IIC Date 28 Clk I IIC Clk ICA1 control regulate the voltage 12Vto9V to the ICA2 Volume signal through ICA2 pin24 right pin25 left int...

Page 45: ...4 Troubleshooting Flow Chart 1 Figure of Waveform FIG 1 12V FIG 2 5V FIG 3 3 3V FIG 4 2 5V FIG 5 32 GRAY SIGNAL INPUT FIG 6 H SYNC 51 ViewSonic Corporation Confidential Do Not Copy VX900 2...

Page 46: ...FIG 7 V SYNC FIG 8 14 3M CLOCK FIG 9 DISPLAY CLOCK FIG 10 DISPLAY H SYNC FIG 11 DISPLAY V SYNC FIG 12 DISPLAY ENABLE 52 ViewSonic Corporation Confidential Do Not Copy VX900 2...

Page 47: ...FIG 13 LVDS TX0 FIG 14 LVDS TX0 FIG 15 LVDS CLOCK FIG 16 LVDS CLOCK FIG 17 AUDIO SINE SIGNAL IN FIG 18 AUDIO SINE SIGNAL OUT 53 ViewSonic Corporation Confidential Do Not Copy VX900 2...

Page 48: ...is at 5V FIG 2 Check that the voltage level of CN100 is approximately 12V Check CN301 pin1 is12V pin5 is 5V IC100 failure FB100 FB101 failure F100 or power board failure YES NO YES NO YES NO Inverter...

Page 49: ...48 FIG 14 Pin39 FIG 15 Pin40 FIG 16 Failure point The cable is disconnected Failure point The cable is disconnected Check CN301 pin1 is12V pin5 is 5V Check IC502 Pin 2 4 is low voltage Failure point 1...

Page 50: ...oard failure 2 Disconnected between CN100 and power board Check that FB100 FB101 is 12V YES NO Check that IC100 pin 2 is about 5V YES NO Failure point F100 failure Failure point FB100 FB101 failure Fa...

Page 51: ...point 1 JA1 failure 2 IC400 pin123 failure Check ICA2 pin11 Pin15 signal is FIG 17 Check ICA1 pin2 is about 12V NO YES YES NO Check ICA5 ICA6 pin 4 is about 5V Failure point 1 QA6 or QA7 failure 2 ICA...

Page 52: ...6 and FIG 7 NO YES NO NO Check that the cable is fully connected between the Interface board and Key board Failure point The cable is disconnected Failure point 1 IC400 pin 1 4 42 43 46 47 125 206 fai...

Page 53: ...5 Adjust Procedure CONTENTS A INSTRUMENT ALIGNMENT 1 PREPARATION OF MANUAL ALIGNMENT 2 COLOR TEMPERATURE ALIGNMENT 3 FACTORY PRESET SETTING 59 ViewSonic Corporation Confidential Do Not Copy VX900 2...

Page 54: ...MED CHROMA 2226 OR EQUIVALENT PRODUCTS COLOR METER MINOLTA CA210 OR EQUIVALENT PRODUCTS 1 4 METHOD TO ENTER EXIT FACTORY MODE 1 4 1 PRESS 2 AND DOWN KEY AND POWER ON TO SET THE MONITOR TO THE BURN IN...

Page 55: ...UNDER FACTORY MODE SELECT COLOR TEMP MANUAL ITEM ON FACTORY OSD MENU IT WILL DISPLAY THE FOLLOWING COLOR TEMPERATURE ADJUST MENU USE UP AND DOWN TO MOVE CURSOR BETWEEN ITEMS 9300 6500 5400 AND 5000 PR...

Page 56: ...R TEMPERATURE ADJUSTMENT AND DO ANOTHER COLOR TEMPERAUTE ADJUSTMENT THE ABOVE RESULT R G B GAIN WILL AUTOMATICALLY BE SAVED 2 2 6500 K ALIGNMENT 2 2 1 USE UP OR DOWN KEY TO MOVE CURSOR TO 6500 COLOR T...

Page 57: ...RE THEN PRESS 2 KEY TO SELECT 5000 COLOR TEMPERATURE ADJUSTMENT 2 4 2 USE 2 TO MOVE CURSOR TO R DRIVER OR G DRIVER OR B DRIVER AND THEN PRESS UP OR DOWN KEY TO ADJUST IT TO MEET FOLLOWING CHROMATICITY...

Page 58: ...6 Mechanical Assembly 64 ViewSonic Corporation Confidential Do Not Copy VX900 2...

Page 59: ...65 ViewSonic Corporation Confidential Do Not Copy VX900 2...

Page 60: ...66 ViewSonic Corporation Confidential Do Not Copy VX900 2...

Page 61: ...67 ViewSonic Corporation Confidential Do Not Copy VX900 2...

Page 62: ...215 0038 5600110046 AUDIO BD ASSY 24 M MH 0822 0008 3460141300 BRACKET D SUB SECC 296 8 46 T0 8 25 M SCW 0824 0412 3109020400 SCREW TAPPING 4 1 6 10 PAN C S18C 26 M SCW 0824 0410 3100300600 SCREW M3 0...

Page 63: ...69 ViewSonic Corporation Confidential Do Not Copy VX900 2 7 Explode Diagram...

Page 64: ...Sechmatic Daigrams 6 ViewSonic Corporation Confidential Do Not Copy VX900 2...

Page 65: ...72 ViewSonic Corporation Confidential Do Not Copy VX900 2...

Page 66: ...73 ViewSonic Corporation Confidential Do Not Copy VX900 2...

Page 67: ...74 ViewSonic Corporation Confidential Do Not Copy VX900 2...

Page 68: ...75 ViewSonic Corporation Confidential Do Not Copy VX900 2...

Page 69: ...76 ViewSonic Corporation Confidential Do Not Copy VX900 2...

Page 70: ...PCB Layout 77 ViewSonic Corporation Confidential Do Not Copy VX900 2...

Page 71: ...78 ViewSonic Corporation Confidential Do Not Copy VX900 2...

Page 72: ...79 ViewSonic Corporation Confidential Do Not Copy VX900 2...

Page 73: ...3109011400 SCREW T M3 0 5 6 BIND C S18C Z AUDIO PANEL BKT 21 M SCW 0824 0413 3109011400 SCREW T M3 0 5 6 BIND C S18C Z I V PANEL BKT 22 M SCW 0824 0413 3109011400 SCREW T M3 0 5 6 BIND C S18C Z I F PA...

Page 74: ...I V SPTE 228 4 73 2 63 M MS 0808 8163 3461750601 HINGE SUB ASSY R 64 M MS 0808 8164 3461750701 HINGE SUB ASSY L 65 P FM 0602 0814 3500084101 CUSHION B EPS 550 245 190 66 P FM 0602 0815 3500084201 CUSH...

Page 75: ...00 SCREW T 3 1 27 8 PAN C S20C 3 PCE 28 M SCW 0824 0412 3109020400 SCREW T 4 1 6 8 PAN C S18C Z 4 PCE 29 M SCW 0824 0620 3109020500 SCREW T 4 1 6 10 PAN C S18C 2 PCE 30 M SCW 0824 0620 3109020500 SCRE...

Page 76: ...1 PLASTIC ABS 94HB 41 D 180 11 GRM 90 4020371609 SD 0150 41 PLASTIC ABS 94HB 41 SD 0150 11 GRM 91 4020371614 PA 707 41 PLASTIC ABS 94HB 41 PA 707 11 GRM 92 C BC 0302 0481 3360240700 R C ABS 41 VX900 1...

Page 77: ...702 60222 RES CH 1 10W 2 2K J 0603 1 PCE 392 E R 0405 7031 0343472300 2322 702 60472 RES CH 1 10W 4 7K J 0603 1 PCE 393 E R 0405 7031 0343472300 2322 702 60472 RES CH 1 10W 4 7K J 0603 1 PCE 394 E R 0...

Page 78: ...ROCESSOR SO 28P 1 PCE 450 E IC 0401 1928 2530100016 TDA1517 N3 IC 2 6 STEREO CARD RADIO 9P 1 PCE 451 E L 0407 1546 2921093512 MLB 160808 0040A N CORE BEAD 100MHZ 40 OHM 0 4A 0 1 PCE 452 E L 0407 1546...

Page 79: ...1 E R 0405 6685 0343103300 ERJ 3GEYJ 103 RES CH 1 10W 10K J 0603 1 PCE 512 E R 0405 6685 0343103300 ERJ 3GEYJ 103 RES CH 1 10W 10K J 0603 1 PCE 513 E R 0405 6685 0343103300 ERJ 3GEYJ 103 RES CH 1 10W...

Page 80: ...PCE 573 0730060412 AT014318F30AA CRYSTAL 14 318MHZ 30PPM AT 49 1 PCE 574 0841110702 0251004 NRT1 FUSE F P 4A 125V UL CSA 1 PCE 575 148121011303 UWX1C101MCR1GB CAP AL CP 16V 100U M 6 3 5 4 1 PCE 576 14...

Page 81: ...CP 50V 22P J C0G 0603 1 PCE 632 E C 0404 4878 1511514000 2238 867 15229 CAP MC CP 50V 22P J C0G 0603 1 PCE 633 E C 0404 4878 1511514000 2238 867 15229 CAP MC CP 50V 22P J C0G 0603 1 PCE 634 E C 0404 4...

Page 82: ...696 1552458000 C0603X104K025T CAP MC CP 25V 1U K X7R 0603 1 PCE 697 1552458000 C0603X104K025T CAP MC CP 25V 1U K X7R 0603 1 PCE 698 1552458000 C0603X104K025T CAP MC CP 25V 1U K X7R 0603 1 PCE 699 1552...

Page 83: ...TR IC REGU ADJ 3A TO 252 1 PCE 756 2500088136 XC61CC4402MR IC VOL DETECTOR 4 4V SOT 23 1 PCE 757 2500092109 SI 8050SD IC VOLT REGU 5V 3A TO 263 5 1 PCE 758 2500223009 SI 3033KS TL IC REGU 3 3V 1A SMD...

Page 84: ...1 PCE 810 2970035501 PWB M0 L4 FR 4 140 117 I F BD 1 PCE 811 3020015200 1041003201 SOCKET IC 32P P1 27 SMD 1 PCE 812 3070337934 A2002WR2 11P WAFER 2 0mm 11P R ANGLE 1 PCE 813 3075308757 DV11201 P8 1...

Page 85: ...ut the content after reading VX900 2 Service Manual e m a N e l t i T y n a p m o C d d A l e T x a F l i a m E m e t I t n e l l e c x E d o o G r i a F d a B t n e t n o C l a u n a M e c i v r e S...

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