ViewSonic VX750 VLCDS27089-1W User Manual Download

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Model No.

089

-1W

”

Color

TFT LCD Display

Service Manual

ViewSonic

X750

ViewSonic

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

(

X750

SM_

755

Rev. 1

Apr.

200

)

Summary of Contents for VX750 VLCDS27089-1W

Page 1: ...Model No VLCDS27089 1W 17 Color TFT LCD Display Service Manual ViewSonic VX7501 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 VX750_SM_755 Rev 1a Apr 2004...

Page 2: ...ereof 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...

Page 3: ...Trouble Shooting Flow Chart 9 Block Diagram 10 Schematic Diagrams 7 Recommended Spare Parts List 1 Precautions and Safety Notices 5 Adjusting Procedure 8 Exploded Diagram And Spare Parts List 11 PCB...

Page 4: ...g this check 4 2 Connect a 1500 ohm 10 watt resistor paralleled with a 0 15uF capacitor between each metallic part and a good earth ground 4 3 Use an AC voltmeter with 1000 ohm volt or more sensitivit...

Page 5: ...pitch 0 264 mm Response time 4 12 16ms Tr Brightness 100 whi Typical 270 cd m Min 220cd Contrast Typical 450 1 Min 300 1 Viewing angle 75 75 65 60 L R T B CR 10 Synchronization Fh 31 82 KHz Fv 50 85Hz...

Page 6: ...ol Also a shortcut to display the Contrast adjustment control screen 2 Enter Displays the control screen for the highlighted control INPUT SELECT Also toggles between two controls on some screens Also...

Page 7: ...it outputs a video signal 1280 x 1024 60 Hz to the LCDdislay Look for instructions on changing the refresh rate in your graphic card s user guide If necessary make small adjustments using H POSITION a...

Page 8: ...Adjust provides several color options preset color temperatures and User which allows you to adjust red R green G and blue B The factory setting for this product is 6500K 6500 Kelvin 6500K Adds red t...

Page 9: ...n i Manual Image Adjust The Image Adjust controls are explained below 1 To select color R G or B press button 2 2 To adjust selected color press I or J 3 When you are finished making all color adjustm...

Page 10: ...ned below Resolution Notice advises the optimal resolution to use Language Select allows you to choose the language used in H Size Horizontal Size adjusts the width of the screen image NOTE Vertical s...

Page 11: ...that while making adjustments from the OSD control screens you can also view open software applications or the Windows desktop OSD OSD Timeout sets the length of time an on screen display screen is d...

Page 12: ...eca 1 Contrast and Bright 1 5 Audio volume can be controlled with VOL key and VOL key When Audi 2Enter key can disable audio output ctors 2 1 AC inlet CEE2 2 2 Audio Line in Line out and Earphone re C...

Page 13: ...ock 7 SDA DDC2B Data 8 VS Reserved No connection 9 RX1 TMDS negative differential input channel 1 10 RX1 TMDS positive differential input channel 1 11 GND Logic Ground 12 RX3 Reserved No connection 13...

Page 14: ...r consumption 38W typical 50Watts Max Output voltage 0 4 16A Load 12 Vdc 5 3 2 2Power Management State Power Indicator On 45Watts Blue Standby 1Watts Amber Off 1Watts Off 3 3 Acceptable timing If the...

Page 15: ...A2 56 4C 30 96 25 1A 50 54 BF EF 80 81 80 40 81 40 71 4F 01 01 01 01 01 01 50 01 01 01 01 30 2A 00 98 51 00 60 2A 40 30 70 13 00 52 0E 11 00 70 00 1E 00 00 00 FF 00 41 32 4E 80 30 33 30 31 30 30 30 3...

Page 16: ...N Y 0 586 BLUE Y 0 103 WHITE Y 0 329 35 ESTABLISHED TIMING I 720 X 400 70HZ IBM VGA 640 X 480 60HZ IBM VGA 640 X 480 67HZ APPLE MAC II 640 X 480 72HZ VESA 640 X 480 75HZ VESA 800 X 600 56HZ VESA 800 X...

Page 17: ...LINES BLANKING TIME 42 LINES SYNC OFFSET 1 LINES SYNC PULSE WIDTH 3 LINES BORDER 0 LINES FREQUENCY 60 02 HZ DIGITAL SEPARATE HORIZONTAL POLARITY VERTICAL POLARITY _____________________________________...

Page 18: ...FF 00 5A 63 10 14 D7 01 01 01 01 01 0D 01 03 20 80 22 1B 78 2E 0C 55 A2 56 4C 30 96 25 1A 50 54 BF EF 80 81 80 40 81 40 71 4F 31 0A 01 01 01 01 50 01 01 01 01 30 2A 00 98 51 00 60 2A 40 30 70 13 00 52...

Page 19: ...0 146 White X 0 313 Red Y 0 336 Green Y 0 586 Blue Y 0 103 White Y 0 329 35 ESTABLISHED TIMING I 720 X 400 70Hz IBM VGA 640 X 480 60Hz IBM VGA 640 X 480 67Hz Apple Mac II 640 X 480 72Hz VESA 640 X 480...

Page 20: ...ime 1024 lines Blanking Time 42 lines Sync Offset 1 lines Sync Pulse Width 3 lines Border 0 lines Frequency 60 02 Hz Digital Separate Horizontal Polarity Vertical Polarity 72 89 Detailed Timing Descri...

Page 21: ...1831A is a high performance dual input graphics processing IC for LCD monitors with resolutions up to SXGA It provides all key IC functions required for LCD panel On chip functions include an 8 bit tr...

Page 22: ...Pin 1 Pin 102 Pin 103 Pin 106 Pin 107 Pin 120 Pin 125 Pin 108 113 and Pin 128 The MST1831A driver interface is highly programmable It supports dual bus dual port for SXGA drivers 6 1 2 Power Regulato...

Page 23: ...ration Confidential Do Not Copy VX750 necessary 6 4 Inverter Board This is a specific inverter for VX750 monitor backlight which converts 12Vdc to drive four cold cathode fluorescence tubes Electrical...

Page 24: ...htness Item Press 1 Menu Menu Button to exit the item 2 Brightness Item Press VOL Button to make brightness high Press VOL Button to make brightness low Press Enter Button to enter Contrast Item Press...

Page 25: ...Press 1 Menu Button to exit Information page 7 Manual Image Adjust Page Press Enter Button to enter Manual Image Adjust page Press 1 Menu Button to exit Manual Image Adjust page Press Up Button to the...

Page 26: ...tem Press Enter Button to enter Language Select item Press 1 Menu Button to exit Language Select item Press Up Button to the previous option or Down Button to the next option English French Option Pre...

Page 27: ...Button to do the memory recall function Press 1 Menu Button to exit the page 2 Other Menu 1 Contrast Dialog Press Down or Up Button to enter the Contrast Dialog Press 1 Menu Button to exit the Contra...

Page 28: ...the page 1 Contrast Item Press VOL Button to make contrast high Press VOL Button to make contrast low Press Enter Button to enter Brightness Item Press 1 Menu Menu Button to exit the item 2 Brightnes...

Page 29: ...e current option low 5 Information Page Press Entr Button to show the information Press 1 Menu Button to exit Information page 6 Manual Image Adjust Page Press Enter Button to enter Manual Image Adjus...

Page 30: ...zontal Position option Press 1 Menu Button to exit Vertical Position option Press Vol Button to make current option low 4 OSD Time Out Item Press Enter Button to enter OSD Time Out item Press 1 Menu B...

Page 31: ...o make volume low Press Vol Button to make volume high 4 Mute Dialog Press Vol or Vol Button to enter the Mute Dialog Press Enter Button to switch volume Dialog 5 Auto Image Adjust Dialog Press Enter...

Page 32: ...ware update program LM5ISP exe 1 2 Setup Procedure 1 2 1 Connect CN1 of Fixture to Printer Port of NB 1 2 2 Connect CN2 of Fixture to VGA Cable 1 2 3 Connect VGA Cable to Analog Input of monitor 1 2 4...

Page 33: ...1 3 LM5ISP Firmware Update 1 3 1 Run the LM5ISP exe Program 30 ViewSonic Corporation Confidential Do Not Copy VX750...

Page 34: ...1 3 2 Select the model name of Option Page 31 ViewSonic Corporation Confidential Do Not Copy VX750...

Page 35: ...1 3 3 Read Firmware data from HEX File and then press Action 32 ViewSonic Corporation Confidential Do Not Copy VX750...

Page 36: ...1 5 DDC update program LM5ISP exe 2 2 Setup Procedure 2 2 1 Connect CN1 of Fixture to Printer Port of NB 2 2 2 Connect CN2 of Fixture to VGA Cable 2 2 3 Connect VGA Cable to Analog Input of monitor 2...

Page 37: ...2 3 LM5ISP DDC Update 2 3 1 Run the LM5ISP exe Program 34 ViewSonic Corporation Confidential Do Not Copy VX750...

Page 38: ...2 3 2 Select the model name of Option Page 35 ViewSonic Corporation Confidential Do Not Copy VX750...

Page 39: ...2 3 3 Read DDC data from Monitor 36 ViewSonic Corporation Confidential Do Not Copy VX750...

Page 40: ...2 3 4 Key in the New Serial Number and then press Enter key 37 ViewSonic Corporation Confidential Do Not Copy VX750...

Page 41: ...nter Mute Mode Power supply of U7 OK Short or open soldering of U7 Low level at Pin of U7 R11 C107 OK Pin 1 of U7 Always 1V Change U7 Pop out audio menu push Enter Key to quit mute mode Check power su...

Page 42: ...2 Display color abnormal 39 ViewSonic Corporation Confidential Do Not Copy VX750...

Page 43: ...3 Monitor can not power on 40 ViewSonic Corporation Confidential Do Not Copy VX750...

Page 44: ...4 Monitor white screen 41 ViewSonic Corporation Confidential Do Not Copy VX750...

Page 45: ...5 Monitor black screen 42 ViewSonic Corporation Confidential Do Not Copy VX750...

Page 46: ...6 Audio noise 43 ViewSonic Corporation Confidential Do Not Copy VX750...

Page 47: ...7 Analog input always shows NO SIGNAL 44 ViewSonic Corporation Confidential Do Not Copy VX750...

Page 48: ...8 Digital input always shows NO SIGNAL 45 ViewSonic Corporation Confidential Do Not Copy VX750...

Page 49: ...21L7VSB0030 Main Board main board 4 weeks 1 2 B SB 0221 0596 AS022172511 Inverter inverter 4 weeks 1 3 P BX 0601 0936 HFL7V003010 Carton carton 4 weeks 1 4 P FM 0602 0845 HBL7V003016 Polyfrom left po...

Page 50: ...6 bezel sub ass y bezel 4 weeks 1 11 PL PS 0715 0981 38L7VEBVS02 Enter base ass y enter base 4 weeks 1 12 PL PS 0715 0982 34L7VSSVS05 Stand sub ass y stand 4 weeks 1 13 B MB 0201 0827 27L7VCSVS05 Chas...

Page 51: ...122 1 29 N A CS21003J906 RES CHIP 1K 1 10W 5 0603 L15 L16 L17 L18 L19 L20 L21 R79 R96 R120 10 30 N A CS24703J900 RES CHIP 4 7K 1 10W 5 0603 R82 R84 R85 R134 4 31 N A CS31003J908 RES CHIP 10K 1 10W 5 0...

Page 52: ...23L7VBB0018 L7VX BUTTON B ASSY POWER KEY 1 98 N A BEBY0002DA0 LED DIP BLUE YELLOW L 130WCP 1QBDN1XW LED1 LED2 2 99 N A DAL7VTB12D3 PCB BUTTON 2 L7VX TB 2L 50 12 REVD 1 100 M MS 0808 7693 DFHD04MR124 C...

Page 53: ...M SCW 0824 0725 MF30050IBJ6 SCREW F3 5 I NI 2 154 N A 28L7VPKVS07 L7VX PACKING ASSY 1 155 A AD 0114 0205 AG12042CK00 ADP 12V 4 2A ADP 50GH BB 100 240V 1A1A 1 156 N A DD0L7VPC201 CABLE ASSY L7V1 8M PC...

Page 54: ...8 Exploded Diagram And Spare Parts List 51 ViewSonic Corporation Confidential Do Not Copy VX750...

Page 55: ...AL FOIL L7VX FCL7V013 REV3A 4 29 M MS 0808 9600 FCL7V014019 FILM BEZEL L7VX FCL7V014 REV3A 1 30 M LB 0813 0894 HCL7V005010 WARNING LABEL INVERTOR HCL7V005 3A 1 31 M SCW 0824 6760 MS30060IM18 SCREW F3...

Page 56: ...ECTOR_2P CN14 PHONE JACK CN12 PHONE JACK CN10 PHONE JACK CN11 M OSFET SI 9410DY Q11 PANEL DC JACK CN15 Adapt or AC DC AC I N DC12V DSUB_15P CN1 ANALOG IN DVI _D_24P CN2 DVI IN I nver t er CONNECTOR_6P...

Page 57: ...er U6 Crystal 14 318MHz X1 Digital Input DVI D 24pin CN2 Analog Input D sub 15pin CN1 Panel TPA3002D2 U7 Line in CN12 MST1831A U3 Line out CN10 Out Connector1 CN13 3P Out Connector2 CN13 2P LM4881 U8...

Page 58: ...V Input From Adaptor AIC1563 U9 TPA3002D2 U7 P MQS NDS9410 Q11 LT1117 U11 LT1117 U10 For U2 U6 U5 PANEL For U3 For U3 5V LM4881 U8 3 3V 2 5V Inverter 5V 55 ViewSonic Corporation Confidential Do Not Co...

Page 59: ...08 8P R 1 2 3 4 5 6 7 8 SW2 HDK632A 1 3 2 4 SW3 HDK632A 1 3 2 4 SW4 HDK632A 1 3 2 4 SW5 HDK632A 1 3 2 4 SW6 HDK632A 1 3 2 4 SW7 HDK632A 1 3 2 4 SW1 HDK632A 1 3 2 4 VOL IN SEL VOL UP DOWN MENU ENTER 56...

Page 60: ...Button Board Power CN2 4606 04 04P R 1 2 3 4 LED2 EL 209 2EGW A1 C A2 LED1 EL 209 2EGW A1 C A2 SW1 HDK632A 1 3 2 4 POWER IO blue orange 57 ViewSonic Corporation Confidential Do Not Copy VX750...

Page 61: ...047u 3 L6 100 6 SOGIN 5 C3 0 047u D13 Z5 6 NC 2 1 D19 Z5 6 NC 2 1 TX2 5 VSYNC IN H R148 5R 6 R29 10K 6NC S5 CON2 12 R16 2 2K 6 NC C13 33P 6 CN1 VGA NC 1 6 2 7 3 8 4 9 5 11 12 13 14 15 10 16 17 VCC DDC...

Page 62: ...5 0 DA0 P6 3 AD3 P6 2 AD2 P6 1 AD1 P6 0 AD0 VDD HALFV DA8 HLFHO DA9 HCLAMP DA7 P5 6 DA6 KEY_UP_O R138 2K NC 1 2 D26 DAN217K NC 1 2 3 C47 0 1U 6 1 2 VCPU 5V MH0002 VDD3V3 DSUB_5V R62 0 6 NC 1 2 CN3 450...

Page 63: ...T PWM0 PWM1 RA0P RA0N AVDD AVDD_MPLL AVDD_DVI BYPASS AVDD_DVI VDDP VDDP VDDP VDDP VDDP VDDP VDDP VDDC VDDC VDDC VDDC AVSS_DVI AVSS AVSS_MPLL AVSS_LPLL AVSS_PLL AVSS_DVI GNDP GNDP GNDP GNDP GNDP GNDP G...

Page 64: ...29 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 R93 10K 6 NC BG2N 5 BG0N 5 XSTB 5 2 FB1N 5 2 VDD3V3 C72 330U 16V NC 1 E GND LVB2M L26 0 8 NC LVACKP 5 GND FG2P 5 C75 0 1U 6 1 2 FR2N 5 L27 0 8 NC LCDVCC G F...

Page 65: ...Q9 2N7002 3 1 2 C114 0 1u 6 AGND SPKRO AGND SD C90 0 01U 6 C80 22u 25V C84 0 1u 6 AGND AVDD R108 10K 6 NS SPKRO R98 0 6 C101 22u 25V L33 R104 120K 6 L37 AGND C85 100u 16V C112 22u 25V LIN R109 20K 6 1...

Page 66: ...122 120p 6 1 2 C128 100u 16V R117 47 6 C118 0 1u 6 1 2 Q12 MMST3906 D35 RB081L 20 2 1 C130 100u 16V R126 330 6 1 2 12V L44 CX000800000 1206 C117 1u 8 1 2 C127 1000u 6 3V L43 47UH 1 2 R125 200 6 1 2 D3...

Page 67: ...11 PCB Layout Diagrams Main Board 64 ViewSonic Corporation Confidential Do Not Copy VX750...

Page 68: ...65 ViewSonic Corporation Confidential Do Not Copy VX750 Main Board...

Page 69: ...66 ViewSonic Corporation Confidential Do Not Copy VX750 Main Board...

Page 70: ...Main Board 67 ViewSonic Corporation Confidential Do Not Copy VX750...

Page 71: ...68 ViewSonic Corporation Confidential Do Not Copy VX750 Main Board...

Page 72: ...69 ViewSonic Corporation Confidential Do Not Copy VX750 Control Board...

Page 73: ...g VX750 Service Manual m e t I t n e l l e c x E d o o G r i a F d a B 1 2 3 t i n U r i a F d a B in the USA at facsimile 1 909 839 7943 You may also e mail any suggestions to the Director Quality Sy...

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