ViewSonic VLCDS25973-4W User Manual Download

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Model No.

5973

/5W

”

Color

TFT LCD Display

Service Manual

ViewSonic

P912s/b

ViewSonic

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

(

P912s/b

SM_

902

Rev. 1

Mar.

200

)

Summary of Contents for VLCDS25973-4W

Page 1: ...Model No VLCDS25973 4W 5W 19 Color TFT LCD Display Service Manual ViewSonic VP912s b1 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 VP912s b_SM_902 Rev 1b Mar 2005 ...

Page 2: ...ess 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 ViewSonic is a registered trademark of ViewSonic Corporation All other trademarks used within this document are the property of their respective owners ...

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 5 8 15 18 42 46 56 71 72 78 ii ViewSonic Corporation Confidential Do Not Copy VP912s b ...

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: ... LCD panel or the front cover of the monitor Do not touch the surface of the polarizer If the surface of the LCD panel is pressed by fingers that may cause MURA Take out the monitor by grasping the cushions If the monitor is removed by grasping the LCD panel that may cause MURA Correct Methods Incorrect Methods ...

Page 7: ...al Do Not Copy VP912s b Place the monitor on a clean and soft foam pad If the monitor is placed on foreign objects that could scratch the surface of the panel or cause MURA If the panel is placed facedown on the lap that may cause MURA ...

Page 8: ...ector Defaults to the first detected input Video Cable Connector DB 15 Pin out Compliant DDC 2B Video Signals 1 Video RGB Analog Separate Composite and Sync on Green 2 TMDS Digital Video Impedance 75 Ohms Analog 100 Ohms Digital Exclusions Not compatible with interlaced video 3 Power Power Supply Internal Power Supply Primary LSE0204A1250 2nd source Tiger power TOF 5001 Input Voltage Range 90 to 2...

Page 9: ...280x 720 60Hz 45kHz HDTV Digital 640 x 350 70Hz 31 5kHz 640 x 400 60Hz 31 5kHz 640 x 400 70Hz 31 5kHz 640 x 480 50Hz 24 7kHz 640 x 480 60Hz 31 5kHz 640 x 480 67Hz 35 0kHz 640 x 480 72Hz 37 9kHz 640 x 480 75Hz 37 5kHz 640 x 480 85Hz 43 27kHz 720 x 400 70Hz 31 5kHz 800 x 600 56Hz 35 1kHz 800 x 600 60Hz 37 9kHz 800 x 600 75Hz 46 9kHz 800 x 600 72Hz 48 1kHz 800 x 600 85Hz 53 7kHz 832 x 624 75Hz 49 7kH...

Page 10: ...6 2 bit Viewing Angle Horizontal CR 10 Minimum 130º 65º Typical 135º 70º 65º Viewing Angle Vertical CR 10 Minimum 125º 65º 60º Response Time 10 90 Ta 25 C 12 ms Tr 3 6 ms Tf 8 4 ms typ 21 ms Tr 6 3 ms Tf 14 7 ms max 6 Mechanical Dimensions Width 416 mm 16 4 inch Height 460 mm 18 1 inch Depth 238 mm 9 4 inch Monitor Weight 7 5 kg 16 5 lbs Ergonomics Tilt Up From 0º up to 20º 2º Tilt Down From 0º do...

Page 11: ...djusts 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 and saves adjustments 3 Front Panel Fu...

Page 12: ...reen image is completely visible The black border around the edge of the screen should barely touch the illuminated active area of the LCD display 9 ViewSonic Corporation Confidential Do Not Copy VP912s b NOTE All OnView menus and adjustment screens disappear automatically after about 30 seconds This time period is adjustable through the Setup menu and the OSD timeout control described on page 10 ...

Page 13: ...computer connected to the VP912b VP912s Color Adjust provides several color adjustment modes preset color temperatures and RGB which allows you to adjust red R green G and blue B separately 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 6500K Adds red to the screen image for warme...

Page 14: ...e graphics card in your computer the LCD model number the serial number and the ViewSonic website URL See your graphic card s user guide for instructions on changing the resolution and refresh rate vertical frequency NOTE VESA 1280 x 1024 60Hz recommended means that the resolution is 1280 x 1024 and the refresh rate is 60 Hertz Manual Image Adjust Sub menu H Size Horizontal Size adjusts the width ...

Page 15: ... the menu shown below Language Select allows the user to choose the language used in the menus and control screens Control Explanation Resolution Notice allows you to enable or disable this notice If you enable the Resolution Notice shown above and your computer is set at a resolution other than 1280 x 1024 the following screen appears 12 ViewSonic Corporation Confidential Do Not Copy VP912s b ...

Page 16: ...ority If multiple computers will be connected to the display this function can be used to select which computer has priority The display will do a one time detection for available inputs when first powered on and choose one depending on the selected input priority For example If the Input Priority setting is D SUB1 D SUB2 DVI then the first priority will be given to D SUB1 when the display turns o...

Page 17: ...lack and white pattern with 1280 1024 60Hz resolution 1 Down hold for 10 seconds Power Lock Unlock User won t be able to turn off the monitor 1 Up hold for 10 seconds OSD Lock Unlock It will lock all functions Up Down Power On with signal Hold for 3 seconds Release Power button first and then Up Down buttons All Mode Reset It will erase all end users settings and restore the factory defaults Up Do...

Page 18: ... of driving a 3A load without any additional transistor component The AP1501 operates at a switching frequency of 150KHz and thus allows smaller sized filter components than what would be needed with lower frequency switch regulator 4 Circuit Description 15 ViewSonic Corporation Confidential Do Not Copy VP912s b ...

Page 19: ...fter the device performs chip erase or block erase operation it can be reprogrammed on a byte by byte basis 3 GM5120 The gm5110 20 is a graphic processing IC for Liquid Crystal Display LCD monitors at XGA SXGA resolution It provides all key IC functions required for the highest quality LCD monitors On chip functions include a high speed triple ADC and PLL Ultra Reliable DVI TM receiver a high qual...

Page 20: ... LVDS link The HC63LVDM83A can be programmed for rising edge or falling edge clocks through a dedicated pin The THC63LVDF84A receiver converts the LVDS data streams back into 28 bits of CMOS TTL data with falling edge clock At a transmit clock frequency of 85MHz 24 bits of RGB data and 4 bits of LCD timing and control data HSYNC VSYNC CNTL1 CNTL2 are transmitted at a rate of 595 Mbps per LVDS data...

Page 21: ... 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 11 800 x 600 56Hz 35 1kHz 12 800 x 600 60Hz 37 9kHz 13 800 x 600 75Hz 46 9kHz 14 800 x 600 72Hz 48 1kHz 15 800 x 600 85Hz 53 7kHz 640 x 350 70Hz 31 5kHz 640 x 400 60Hz 31 5kHz 640 x 40...

Page 22: ...on Remark 1 Frequency Tracking Fine Line Moire Eliminate visual wavy noise Figure 1 2 Contrast Brightness 16 Gray Scale 16 gray levels should be distinguishable Figure 2 3 Boundary Horizontal Vertical Thickness Horizontal and Vertical position of video should be adjustable to be within the screen frame Figure 3 4 RGB Color Performance RGB Color Intensities Contrast of each R G B color should be no...

Page 23: ...al Thickness Pattern Figure 3 R Color Pattern Figure 4 G Color Pattern Figure5 B Color Pattern Figure 6 Full White Patter Figure 7 Dark Screen Pattern Figure 8 20 ViewSonic Corporation Confidential Do Not Copy VP912s b ...

Page 24: ...to adjust each function manually 1 5 3 Firmware Test Pattern Burn In Mode Refer to Chapter III 3 Hot Keys for Function Controls Make sure the F W is the latest version 1 5 4 DDC Test Pattern EDID program Make sure it can pass test program 1 5 5 Fine Tune and Sharpness Test Signal 1280 1024 60Hz Test Pattern Line Moire Pattern Check and see if the image has noise and focus performs well Eliminate v...

Page 25: ...ontrast Test Signal 1280 1024 60Hz Test Pattern R G B Color Intensities Pattern and 16 Gray Scale Pattern Check and see if each color is normal and distinguishable 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 1 5 10 Dead Pixel and Line Test Signal 1280 1024 60Hz...

Page 26: ...0 x 480 85Hz 43 27kHz 720 x 400 70Hz 31 5kHz 800 x 600 56Hz 35 1kHz 800 x 600 60Hz 37 9kHz 800 x 600 75Hz 46 9kHz 800 x 600 72Hz 48 1kHz 800 x 600 85Hz 53 7kHz 832 x 624 75Hz 49 7kHz 1024 x 768 60Hz 48 4kHz 1024 x 768 70Hz 56 5kHz 1024 x 768 72Hz 58 1kHz 1024 x 768 75Hz 60 0kHz 1024 x 768 85Hz 68 67kHz 1152 x 864 75Hz 67 5kHz 1152 x 870 75Hz 68 7kHz 1280 x 1024 75Hz 79 97kHz 1280x 720 60Hz 45kHz H...

Page 27: ...apter P N 47 58201 001 1 for Fixture 12 VDC VGA Cable P N 42 59901 003 1 Pin 4 11 should be connected to GND PC Personal Computer with printer port OS Window 98 ME 2000 Printer Cable P N 42 59906 001 1 Firmware Upgrade Program One additional monitor for checking the program execution PC VP912 Fixture Power Adapter for Fixture P N 47 58201 001 Printer Cable P N 42 59906 001 VGA Cable P N 42 59901 0...

Page 28: ...y VGA Cable 3 Plug Power Adapter to Fixture 4 Connect Power Cord to VP912 Monitor and turn on the Power Switch 5 Connect PC to the additional monitor 25 ViewSonic Corporation Confidential Do Not Copy VP912s b P1 to VGA Cable P2 to Printer Cable JP1 to Power Adapter Connect to Power Cord Switch on Power Switch Connect to VGA Cable ...

Page 29: ...6 Install GProbe Program by selecting and clicking Gprobe icon Press Yes or Next buttons until the installation is complete 26 ViewSonic Corporation Confidential Do Not Copy VP912s b ...

Page 30: ...27 ViewSonic Corporation Confidential Do Not Copy VP912s b ...

Page 31: ...28 ViewSonic Corporation Confidential Do Not Copy VP912s b ...

Page 32: ...29 ViewSonic Corporation Confidential Do Not Copy VP912s b ...

Page 33: ... files bdisp txt p204_205 bin and vp912_AU_V2_001_04611 bin in the computer 30 ViewSonic Corporation Confidential Do Not Copy VP912s b 2 Open bdisp txt file Key in the path where you save the driver p204_205 bin and firmware vp912_AU_V2_001_040611 bin ...

Page 34: ...31 ViewSonic Corporation Confidential Do Not Copy VP912s b 3 Execute Gprobe program 4 Click Connection Setup icon Select Protocol DDC 2Bi3 Port Printer1 0x378 Speed 70000 ...

Page 35: ...ws Error Message please check your Hardware set up procedure is correct or not 32 ViewSonic Corporation Confidential Do Not Copy VP912s b 6 Key in batch c VP912 bdisp txt after Probe and then press Enter key to begin programming automatically The path is where you save bdisp txt file ...

Page 36: ...dential Do Not Copy VP912s b 7 The successful picture is as follows 8 Turn off the power switch of VP912 and turn it on again Then enter Burn In Mode and Serial Number will appear Check if the version of BIOS is correct Power Switch ...

Page 37: ...failed Test failed Test failed Test failed Error executing batch file at line 4 Execution time 5 72s GProbe b If there is error to execute the command at or after line11 in the bdisp txt batch file please copy the error line of the bdisp txt batch file to Gprobe in the Gprobe program and then press Enter For example there is Error executing batch file at line 16 see the following picture Then you ...

Page 38: ...st passed Test passed Erasing FLASH Done Writing FLASH Writing FLASH FAILED Error executing batch file at line 16 Execution time 9 61s GProbe Line 16 Line 16 35 ViewSonic Corporation Confidential Do Not Copy VP912s b ...

Page 39: ...ned on that means the flash memory of the main board is out of work You then have to replace the main board 3 DDC Key In Procedure Note 1 Every time after replacing the main board you have to do the DDC key in 2 If you find the DDC does not conform to the monitor you have to do the DDC key in 3 1 Equipment Needed VP912 Series Monitor Fixture V3 for DDC Key in JP3 must be closed RS232 Cable P N 42 ...

Page 40: ...dditional monitor for checking the program execution COM1 to RS232 Cable JP3 must be closed V3 Fixture PC VP912 Power Adapter for Fixture P N 47 56001 402 RS 232 Cable P N 42 55907 001 DVI DVI Cable Barcode Reader VGA Cable P N 42 59901 008 37 ViewSonic Corporation Confidential Do Not Copy VP912s b ...

Page 41: ...ure with COM1 of PC by RS 232 Cable 3 2 4 Plug Power Adapter to Fixture JP1 3 2 5 Connect Power Cord to VP912 Monitor 3 2 6 Connect PC to the additional monitor 38 ViewSonic Corporation Confidential Do Not Copy VP912s b JP1 to Power Adapter P1 to RS232 Cable P2 P4 to VGA Cable P3 to DVI DVI Cable JP3 must be closed Turn on Power Switch Connect to Power Cord DVI Port VGA Port ...

Page 42: ...ting mode 39 ViewSonic Corporation Confidential Do Not Copy VP912s b 1 Press 1 and Power buttons simultaneously to enter Factory Mode Note The Method to check if Factory Mode is enabled Press 1 and Up buttons simultaneously if the message of DMT XXX appears that means Factory Mode is enabled ...

Page 43: ... The English of the serial number should be capital letters 5 The successful picture is as follows The checksum values will appear after DDC is upgraded successfully in both VGA and DFP DVI modes 40 ViewSonic Corporation Confidential Do Not Copy VP912s b ...

Page 44: ...heck DDC CheckSum is correct or not 7 Enter Burn In Mode Turn off the power switch of the rear cover of VP912 and turn it on again Check if the serial number is correct 41 ViewSonic Corporation Confidential Do Not Copy VP912s b ...

Page 45: ...ter with SXGA resolution and sound card or a Pattern Generator 2 Main Procedure Note Before troubleshooting first execute All Mode Reset to restore the monitor s settings to the factory defaults Power on Start Power LCD ok A Power circuit Troubleshooting No B Performance Troubleshooting C Function Troubleshooting No Yes No Is function adjustment OK Yes Yes Is display performance ok End 6 Troublesh...

Page 46: ...s screen white Yes Replug or Change FPC Cable Yes Is screen black No Change Main Board Abnormal Color Start Change Inverter Board No Change LCD Panel Yes Yes Yes No No Change Main Board No Change LCD Panel Yes Yes No Yes Yes Change Main Board No Change LCD Panel Yes Yes No 43 ViewSonic Corporation Confidential Do Not Copy VP912s b ...

Page 47: ...o Change Main Board Yes Yes Yes No No Refer to No No Yes Refer to Adjust Fine Tune Sharpness or Auto Adjustment No Change Main Board Yes Yes Yes End Notes 1 Make sure the VGA cable is connected to the PC directly not via any data transfer or distribution devices After this action if the ghost image disappears go to Yes otherwise go to No 2 Check the compatibility of the computer If it is a compati...

Page 48: ...2 3 C Control Function Troubleshooting Change Control Board Start No Change Main Board Yes Yes End 45 ViewSonic Corporation Confidential Do Not Copy VP912s b ...

Page 49: ...RKT 1 35 Lock BRKT CAP SECC 0 8t M BK 0805 0023 61 00042 001 Lock BRKT 1 36 Shielding BRKT MB MST9151B SECC 1 0t VP191 HW 00001425 61 61202 002 Shielding BRKT 1 37 Shielding Plate INV TinePlate 0 3t VP191 M MS 0808 9559 61 61203 001 Shielding Plate 1 38 Bird Logo AL E015 004 ViewSonic M MS 0808 7800 35 61202 001 LOGO 1 39 Cosmetic Strip Adhesive 180 10 0 3 t mm PC VS08 VP191b M 00000685 35 61204 0...

Page 50: ...Chinese M LB 0813 0737 36 58308 001 WARRANTY 1 4 Shipping Warranty Sticker S Chinese ViewSonic M LB 0813 0739 36 58309 001 WARRANTY 1 5 Packing PE Bag LDPE 820 850 0 05t VP191 191b For Carton M MS 0808 8794 51 61219 001 PE BAG 1 A Model VP912b 1A Item ECR ECN ViewSonic P N Ref P N Location Universal number Q ty 1 Accessories Power Cord 1830mm SP30 IS14 A PC 0106 0272 42 50115 001 POWER CORD 1 Desc...

Page 51: ... Plate 1 42 Bird Logo AL E015 004 ViewSonic M MS 0808 7800 35 61202 001 Logo 1 43 EMI Gasket UGT 7 0 5 8mm M MS 0808 9541 41 54002 002 EMI Gasket 2 44 EMI Tape 80560 25 30mm M MS 0808 7799 41 54612 001 EMI Tape 6 45 EMI Tape 80560 30 50mm M MS 0808 7798 41 53615 001 EMI Tape 2 46 Filament Tape 3M NO 8915 25mm 55M M MS 0808 8797 51 00014 002 Filament Tape 0 0032 47 Mylar Adhesive 150 45 0 25t VG710...

Page 52: ...MMA VP191 1 30 M MS 0808 7797 51 61216 001 MYLAR ADHESIVE t 0 3mm VP191 1 31 P BX 0601 1083 51 61218 002 PC 30 12 0 65t mm VP191F 3 32 M MS 0808 9552 51 61217 001 MYLAR PROTECT FILM 400 315 0 1t 1 33 N A 51 62709 002 MYLAR ADHESIVE 150 45 0 25t VG710 1 34 M MS 0808 9912 52 59901 001 RUBBER 35 10 4mm 2 35 M MS 0808 9914 52 61202 002 RUBBER KIT SILICONE 20 10 3 5mm 2 36 M MS 0808 9913 52 61202 003 R...

Page 53: ...W CHIP 0603 TA I TECHNOLOGY R127 R128 R129 R1 64 R165 R166 R49 R 50 R51 9 73 N A 01 75139 501 RES RP 750 5 1 10W CHIP 0805 R142 R143 2 74 N A 02 10174 404 CAP CE 100u 20 16V 6 3 11 RADIAL 105 deg C106 C116 C17 C95 C96 CT1 CT10 CT11 CT12 CT13 CT19 C T20 CT23 CT24 CT2 5 CT6 CT9 17 75 N A 02 10747 101 CAP CC 0 01uF 10 50V X7R 0603 YCTC TEAM YOUNG C132 C133 C135 C1 37 C182 C184 6 76 N A 02 10887 101 C...

Page 54: ...DEMUX U12 1 108 N A 21 24LC1 601 IC EEPROM 24LC16B SN M 2K 8 BIT IIC BUS 8 U11 1 109 N A 22 61203 002 PROGRAMMED IC VP912 GM5321 1 110 N A 21 Pm39L V02 IC Pm39LV020 CMOS FLASH MEMORY 2M BIT 3 0 U7 1 111 N A 39 61206 002 FW BIOS SOURCE CODE VP912 FOR GM5321 1 112 N A 35 00017 001 LABEL BIOS 13 11mm BLANK 1 113 N A 35 00018 001 LABEL BARCODE 13 26 5mm BLANK 1 114 N A 35 59907 001 LABEL SPEC ASIC 13 ...

Page 55: ...912 001 ViewSonic security tape 50t 100000mm 0 01 154 N A 55 55103 001 CORNER BOARD 40 40 5 1050mm 0 0625 155 N A 55 57202 001 CORNER BOARD 40 40 5 960mm 0 0625 156 N A 55 61205 001 CORNER BOARD 40 40 5 2040mm VP191 0 125 157 N A 55 61204 002 COVER PALLET AB FLUTE 114 102 0 7cm FOR V 0 03125 158 N A 58 61201 001 WOOD PALLET 1140 1020 115 for VP191 0 03125 159 N A 70 612DP 011 COMMON PACKAGE CS VS0...

Page 56: ...t mm VP191F 3 32 M MS 0808 9552 51 61217 001 MYLAR PROTECT FILM 400 315 0 1t 1 33 N A 51 62709 002 MYLAR ADHESIVE 150 45 0 25t VG710 1 34 M MS 0808 9912 52 59901 001 RUBBER 35 10 4mm 2 35 M MS 0808 9914 52 61202 002 RUBBER KIT SILICONE 20 10 3 5mm 2 36 M MS 0808 9913 52 61202 003 RUBBER KIT SILICONE 20 10 7 0mm 2 37 HW 00001424 61 61201 003 LCD BRKT MB GM5321 SECC 1 0t VP191 912 1 38 HW 00001425 6...

Page 57: ...C43 C44 C45 C46 C47 C48 C49 C5 C50 C51 C52 C53 C56 C57 C58 C59 C6C60 C63 C64 C65 C66 C67 C68 C69 C7 C70 C75 C76 C77 C78 C79 C8 C80 C82 C83 C84 C85 C86 C87 C8 8 C89 C9 C90 C91 C92 C93 C9 4 C97 C98 C99 109 77 N A 02 10987 101 CAP CC 1uF 80 20 16V Y5V 0603 C113 1 78 N A 02 20437 101 CAP CC 20pF 5 50V NPO CHIP 0603 C73 C74 2 79 N A 02 22447 101 CAP CC 22pF 5 50V NPO 0603 YCTC TEAM YOUNG C147 C148 C149...

Page 58: ...BER FOOT 25 10 1 2t 1 130 PL PD 0714 0091 52 61201 001 RUBBER PAD 27d 2t VP191 4 131 M MS 0808 8772 61 61204 001 BASE PLATE SPHC 3 0t Zn 1 132 M MS 0808 8755 61 61205 001 HINGE VP191 1 133 M CV 0830 2457 75 61202 003 ASSY HINGE CAP CS VS06 VP191s 1 134 M CV 0830 0297 51 61204 003 HINGE CAP 1 PC ABS VS06 VP191s 1 135 M CV 0830 0298 51 61205 003 HINGE CAP 2 PC ABS VS06 VP191s 1 136 M CV 0830 2456 75...

Page 59: ...8 Exploded Diagram And Spare Parts List 56 ViewSonic Corporation Confidential Do Not Copy VP912s b 61 ...

Page 60: ...91 1 31 M WR 0828 0719 42 61205 001 W A 3P UL1007 18 50mm VP191 INLET 1 32 M MS 0808 9559 61 61203 001 SHIELDING PLATE INV Tineplate 0 3t VP191 1 33 M SCW 0824 6753 85 4A323 040 SCREW FLAT MECH M3 4 BLACK 3 34 M SCW 0824 6961 85 1H123 040 SCREW PAN MECH W SPG M3 4 Ni 9 35 M SCW 0824 0651 85 1F123 060 SCREW PAN MECH W SF M3 6 Ni 10 36 M SCW 0824 6826 85 1F323 080 SCREW PAN MECH W SF M3 8 BLACK 4 37...

Page 61: ... 00000183 42 59910 A01 CABLE VGA 15P 1800mm 2 75mm 2 CORE 1 6 A VC 0101 0262 42 59902 012 CABLE DVI D 1 8M 2 CORE MOLEX 1 7 P 00000334 51 00081 009 PE BAG LDPE 570 850 0 1t W HOLE 1 8 M MS 0808 9552 51 61217 001 MYLAR PROTECT FILM 400 315 0 1t 1 9 P 00001414 55 61201 008 CARTON AB 18 490 265 440 VP912b W GM5321 1 10 P FM 0602 0579 56 61201 001 CUSHION R EPS VP191 1 11 P FM 0602 0580 56 61202 001 C...

Page 62: ...Figure 2 1 3 Apply protective film to protect the monitor face Figure 3 1 4 Put the monitor in the PE bag and seal the bag with tape Figure 4 PE BAG Protection film Figure 3 Protection Film 1 3 1 3 1 3 Figure 4 59 ViewSonic Corporation Confidential Do Not Copy VP912s b Figure 2 Position of tape Switch Figure 1 25mm ...

Page 63: ...tor into the carton and then put all the accessories 1 VGA cable 2 DVI D cable 3 user guide CD 4 power cord into the carton At last close the carton and seal it with tape Figure 6 3 4 2 1 Figure 5 Figure 6 60 ViewSonic Corporation Confidential Do Not Copy VP912s b ...

Page 64: ...and unit from Monitor Put the monitor facedown Take off Oval Cap and pry Hinge Cap off The Front View The Rear View Hinge Cap Oval Cap 1 1 61 ViewSonic Corporation Confidential Do Not Copy VP912s b B Disassembly Procedure ...

Page 65: ... Unit 1 3 Unscrew five screws of Base Plate to remove Base Plate from Hinge 1 4 Unscrew three screws that secure Base Plate to separate Base Plate from Base Cover PanelUnit Stand Hinge Base Plate Base Cover Base Plate 62 ViewSonic Corporation Confidential Do Not Copy VP912s b ...

Page 66: ...two screws that secure Hinge Front Arm to detach Front Arm from 1 5 Unscrew two screws that secure Rear Arm to separate Rear Arm from Hinge RearArm Hinge Front Arm Hinge 63 ViewSonic Corporation Confidential Do Not Copy VP912s b ...

Page 67: ...sembly of Rear Cover Unscrew four screws of Rear Cover and then detach LCD Panel module from Rear Cover Rear Cover LCD Panel Module LCD Panel Module 64 ViewSonic Corporation Confidential Do Not Copy VP912s b 1 ...

Page 68: ...Shielding Plate and remove Shielding Plate ShieldingPlate Unscrew two screws and uplug five wires to remove Inverter Board Inverter Board EMI Tape 65 ViewSonic Corporation Confidential Do Not Copy VP912s b 1 2 Note EMI tape cannot be reused please apply new EMI tape in the original position ...

Page 69: ...Board wire to remove Main Board Unscrew eleven screws that secure M B Shielding Bracket uplug one wire to remove M B Shielding Bracket M BShieldingBracket Wire EMI Tape Hex Screw Screw Wire Main Board Control Board wire 66 ViewSonic Corporation Confidential Do Not Copy VP912s b 3 4 two pieces of EMI tape and ...

Page 70: ...Unscrew four screws that secure Power Board and unplug one wire to remove Power Board Power Board with Mylar 67 ViewSonic Corporation Confidential Do Not Copy VP912s b 5 ...

Page 71: ...s that are connected to Switch Wire and press four tenons that secure Switch wire and Inlet Wire and use flat screw driver to pull and press out Inlet andSwitchWires InletWire SwitchWire Tenon SwitchWire 68 ViewSonic Corporation Confidential Do Not Copy VP912s b ...

Page 72: ...ard wire and press four tenons to remove Front Cover from LCD Panel Unscrew four screws beside LCD Bracket to detach LCD Panel from LCD Bracket Tenon Front Cover Control Board wire Screw LCD Bracket LCDPanel 69 ViewSonic Corporation Confidential Do Not Copy VP912s b 1 2 ...

Page 73: ...Cable Tape 70 ViewSonic Corporation Confidential Do Not Copy VP912s b 3 Tear off two pieces of tape to remove one cable ...

Page 74: ...M 7 7 Thursday June 24 2004 C Title Size Document Number Rev Date Sheet of SCL SDA DDC_IIC AC 110 240V 12V HS VS DDC_IIC VL VH BLON 12V 12VIN 5V 3 3VD 3 3VA 2 5V DVS DHS DEN DCLK DDC_IIC HS VS R G B R G B D_SUB DDC INVERTER DPMS ASIC ADAPTER FLASH MEMORY PANEL XTAL EEPROM DDC DVI DDC D_SUB LVDS 71 ViewSonic Corporation Confidential Do Not Copy VP912s b 9 Block Diagram ...

Page 75: ...H L5 22uH C53 NC C43 0 1uF C34 0 1uF R1 330 1 R13 33 C52 NC D1 IN5822 C176 0 1uF R6 0 C15 100uF 16V R12 10K U2 XC6201 3 1 2 VI VO GND R2 NC L10 BEAD 1206 R5 1K C33 0 C27 100uF 16V Q3 2N3904 1 2 3 C4 100uF 16V C21 10k C39 0 1uF C8 0 1uF C19 100uF 16V L1 22uH C41 0 1uF U4 AP1501 1 2 4 5 3 VIN VOUT VOS S S GND C36 0 1uF C28 0 1uF C20 NC R14 NC C22 100uF 16V L6 BEAD 0805 C14 NC JP1 HEADER 10 2 0 1 2 3...

Page 76: ...C SELA B OE VCC R47 75 R30 NC U6 ICL7660S 1 2 3 4 8 7 6 5 BOOST CAP GND CAP V OSC LV Vout R52 NC C78 0 01uF C71 0 01uF C79 0 01uF R36 0 R33 100 C76 0 01uF C55 0 1u C56 0 1u C77 0 01uF C60 100uF 16V R32 0 R137 0 C80 0 01uF R136 0 R42 0 R31 NC R43 100 R38 100 R25 NC R19 100 C75 0 01uF R28 NC 1 2 3 SOT23 D2 BAV70 R26 NC R27 NC R16 2 2K R20 100 C69 0 1u R21 NC U7 24LC21A 4 8 1 2 3 7 6 5 GND VCC NC NC ...

Page 77: ...RX1 RX0 RX0 XTAL TCLK GPIO0 PWM0 GPIO1 PWM1 GPIO2 PWM2 GPIO3 TIMER1 GPIO4 UART_D1 GPIO5 UART_D0 GPIO11 ROM_WEn GPIO12 NVRAM_SDA GPIO13 NVRAM_SCL DCLK DEN DVS DHS RXC RXC REXT GPIO16 HFSn GPIO22 HCLK RESETn GPIO21 IRQn DDC_SCL DDC_SDA GPIO8 IRQINn CLKOUT ROM_ADDR0 ROM_ADDR1 ROM_ADDR2 ROM_ADDR3 ROM_ADDR4 ROM_ADDR5 ROM_ADDR6 ROM_ADDR7 ROM_ADDR8 ROM_ADDR15 ROM_DATA0 ROM_DATA1 ROM_DATA2 ROM_DATA3 ROM_D...

Page 78: ...1 ER2 DBE2 DBE0 DBE1 DBE3 OG 0 7 3 OR 0 7 3 EB 0 7 3 EG 0 7 3 ER 0 7 3 OB 0 7 3 DRO 0 7 5 DGO 0 7 5 DBO 0 7 5 DRE 0 7 5 DGE 0 7 5 DBE 0 7 5 RP6 100X4 1 8 2 7 3 6 4 5 RP9 100X4 1 8 2 7 3 6 4 5 RP2 100X4 1 8 2 7 3 6 4 5 RP4 100X4 1 8 2 7 3 6 4 5 RP5 100X4 1 8 2 7 3 6 4 5 RP7 100X4 1 8 2 7 3 6 4 5 RP8 100X4 1 8 2 7 3 6 4 5 RP3 100X4 1 8 2 7 3 6 4 5 CP3 NC 1 2 7 3 6 4 5 8 RP10 100X4 1 8 2 7 3 6 4 5 CP...

Page 79: ...uF C135 100pF C154 0 1uF C149 0 1uF C157 100pF C156 0 1uF C158 100pF U12 DS90CF383 1 2 3 4 6 5 13 21 7 8 9 17 10 11 12 14 15 16 18 19 20 22 23 24 25 27 28 30 26 51 52 54 55 56 53 29 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 VCC TxIN5 TxIN6 TxIN7 TxIN8 GND GND GND TxIN9 TxIN10 VCC VCC TxIN11 TxIN12 TxIN13 TxIN14 TxIN15 TxIN16 TxIN17 TxIN18 TxIN19 TxIN20 TxIN21 TxIN22 TxIN23 TxIN24...

Page 80: ...0 R104 0 R115 2 2K U16C 74LVC126 9 8 10 R112 33 R105 0 R124 1k RP15 1k 1 8 2 7 3 6 4 5 U14 PCB2421 4 8 1 2 3 7 6 5 GND VCC A0 A1 A2 WP SCL SDA CP14 NC 1 2 7 3 6 4 5 8 U16D 74LVC126 12 11 13 R100 100 C169 0 1uF C162 22pF R97 2 2K R110 0 C160 0 1uF C168 0 1uF JP11 SMD 1 2 3 4 5 6 7 8 9 10 R114 2 2K R116 100 R101 100 R113 33 R120 NC R96 2 2K C164 47pF U15 PCB2421 4 8 1 2 3 7 6 5 GND VCC A0 A1 A2 WP S...

Page 81: ...11 PCB Layout Diagrams 78 ViewSonic Corporation Confidential Do Not Copy VP912s b ...

Page 82: ...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 M...

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