ViewSonic VLCDS25973-2W User Manual Download

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Service Manual

Model No.

25973-2W/3W

”

Color

TFT LCD Display

ViewSonic

VP191b/s

-1

ViewSonic

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

(

P191b/s

SM_

678

Rev. 1

Oct

200

)

Summary of Contents for VLCDS25973-2W

Page 1: ...Service Manual Model No VLCDS25973 2W 3W 19 Color TFT LCD Display ViewSonic VP191b s 1 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 VP191b s_SM_678 Rev 1c Oct 2004 ...

Page 2: ...urpose 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 Optiquest is a registere...

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 Layout Diagrams 1 3 7 17 19 42 46 54 69 70 76 ii ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 4: ...e 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 inserting or disconnecting from input connector 3 Wipe off water drop immediately Long contact with ...

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

Page 6: ... Digital Video Impedance 75 Ohms Analog 100 Ohms Digital Maximum PC Video Signal 950 mV with no damage to monitor Maximum Mac Video Signal 1250 mV with no damage to monitor Sync Signals TTL DDC 2B Compliant with Revision 1 3 Sync Compatibility Separate Sync Composite Sync SOG Video Compatibility Shall be compatible with all PC type computers Macintosh computers and after market video cards Resolut...

Page 7: ...andomly missing at nominal input Power Supply Acoustics The power supply shall not produce audible noise that would be detectable by the user Audible shall defined to be in compliance with ISO 7779 DIN EN27779 1991 Noise measurements of machines acoustics Power Switch noise shall not be considered US Type Power Cable Separate 3 prong NEMA 5 15P type plug Length 1 8m Connects to display Color Black...

Page 8: ...x 870 75Hz 68 7kHz Yes Yes 24 1280 x 1024 60Hz 63 4kHz Yes Yes 25 1280 x 1024 75Hz 79 97kHz Yes Yes 26 1280x 720 60Hz 45kHz HDTV Yes Yes Primary Presets 1280x1024 60Hz User Presets Number of User Presets recognized timings Available 10 presets total in FIFO configuration Changing Modes Maximum Mode Change Blank Time for image stability 5 seconds Max excluding Auto Adjust time Under DOS mode 640 x ...

Page 9: ...t 9300K 6500K default 5400K 5000KUser Color R G B Information H Frequency V Frequency Resolution Pixel Clock Serial Number Model Number www ViewSonic com Manual Image Adjust Horizontal Size 1 H V Position 1 Fine Tune 1 Sharpness 2 Setup Menu Language English French German Spanish Italian Finnish Japanese Simplified Chinese Traditional Chinese Resolution Notice Input Priority Analog1Æ Analog 2ÆDVI ...

Page 10: ...dicating Power Button lock or unlock is in progress and when complete it will indicate Power Button Locked Note 2 Power should only be lockable in the On State Memory Recall Actions Memory Recall action on the analog and digital mode as below 1 Recall white balance to factory setting 2 Set the factory defaults as shown in Section 4 8 3 Clean all the mode setting buffer 4 Execute Auto Image Adjust ...

Page 11: ...ource Panel Model number Fujitsu FLC48SXC8V 11AA Type MVA type with LVDS interface Active Size 376 32 H x 301 06 V Pixel Arrangement RGB Vertical Stripe Pixel Pitch 0 294 mm Glass Treatment Anti Glare Hard coating 2H of Backlights 4 CCFL edge light 2 top 2 bottom Backlight Life 50 000 Hours Min Luminance Center CT 6500K Contrast Brightness Max 300 cd m2 Typ after 30 minute warm up 210 cd m2 Min af...

Page 12: ...max 5920K CCT min 4935K Preset 4 CCT typ 5000K Wx 0 346 Wy 0 359 CCT max 5400K CCT min 4653K Preset Color Temperature Adjustability Each color preset shall be adjustable Red Green and Blue shall be individually controlled Video Cards Compatibility Peaking Performance Peaking is not adjustable Raster Artifacts Video Artifacts No visible streaking sag or smearing artifacts when driven by the specifi...

Page 13: ...an 0 80 Delta E in the 1976 CIE L a b Colorspace Neck Base Speaker Cover Rear Cover and Rear Logo Color The reference for the Neck Base Speaker Cover Rear Cover and Rear Logo Color is the Black VP191s Midnight Gray VP191b VP191b H color chip provided by ViewSonic The color difference between any two cabinet components shall be less than 0 80 Delta E in the 1976 CIE L a b Colorspace Cabinet Color D...

Page 14: ...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 and saves adjustments 3 F...

Page 15: ...press button 1 twice The following tips may help you optimize your display Adjust your computer s graphic card so that it outputs a video signal 1280 x 1024 60Hz to the LCD display Look for instructions on changing the refresh rate in your graphic card s user guide If necessary make small adjustments using H POSITION and V POSITION until the screen image is completely visible The black border arou...

Page 16: ...puter connected to the VP191 VP191b VP191s 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 wa...

Page 17: ...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 18: ...ays the menu shown below Language allows you 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 15 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 19: ...1 then the next priority will be given to D SUB 2 etc In the case of only one signal being present at the three inputs then the display will automatically detect and display that signal The Input Priority setting can also be disabled In this case the input will return to the last setting when the display is first turned on The user will need to control all the port settings manually under this con...

Page 20: ...es of 8 bits each This device is designed to use a 3 0 Volt to 3 6 Volt power supply to perform in system programming The 1 Megabit memory array is divided into thirty two uniform blocks of 4 Kbytes each for data and or code storage The block architecture allows users to flexibly make chip erase or block erase operation The block erase feature allows a particular block to be erased and reprogramme...

Page 21: ...flexibility and quality gm5110 5120 System Design Example 4 LVDS THC63LVDM83A The THC63LVDM83A transmitter converts 28 bits of CMOS TTL data into LVDS Low Voltage Differential Signaling data stream A phase locked transmit clock is transmitted in parallel with the data streams over a fifth LVDS link The HC63LVDM83A can be programmed for rising edge or falling edge clocks through a dedicated pin The...

Page 22: ...ress buttons simultaneously and Power on with signal hold on for 3 seconds Then the screen will show All Mode Reset 5 Adjusting Procedure 5 1 Function Test and Alignment Procedure 5 1 1 Product 5 1 2 Test Equipment 5 1 3 Hot Key 19 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 23: ...ds Then the screen will show Burn In Mode Press button you can find the information about this monitor 3 White Balance Set the screen on 640 480 60Hz resolution pure black and white pattern no other color Press and simultaneously 1 1 20 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 24: ...s and the OSD will lock Repeat the action and the OSD will unlock 5 Power Lock Press and buttons simultaneously for 10 seconds and the Power will lock Repeat the action and the Power will unlock 1 1 21 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 25: ...y Before function test and alignment each LCD Monitor should be run in and warmed up for at least 30 minutes with the following conditions a In room temperature b With full white screen R G B Black c With cycled display modes 640 480 H 43 27kHz V 85Hz 800 600 H 53 7kHz V 85Hz 1024 768 H 68 67kHz V 85Hz 1280 1024 H 79 97kHz V 75Hz 1 2 5 1 4 Test Condition 22 ViewSonic Corporation Confidential Do No...

Page 26: ... 4kHz 1280x1024 75Hz 79 97kHz 1280x720 60Hz 45kHz Analog 640x350 70Hz 31 5kHz 640x400 70Hz 31 5kHz 640x480 60Hz 31 5kHz 640x480 75Hz 37 5kHz 640x480 72Hz 37 9kHz 640x480 85Hz 43 27kHz 720x400 70Hz 31 5kHz 800x600 56Hz 35 1kHz 800x600 60Hz 37 9kHz 800x600 75Hz 46 9kHz 800x600 72Hz 48 1kHz 800x600 85Hz 53 7kHz 1024x768 60Hz 48 4kHz 1024x768 70Hz 56 5kHz 1024x768 72Hz 58 1kHz 1024x768 75Hz 60 0kHz 10...

Page 27: ...h t n i h t i w e b o t e l b a t s u j d a e b e m a r f 3 e r u g i F 4 r o l o C B G R e c n a m r o f r e P r o l o C B G R s e i t i s n e t n I d l u o h s r o l o c B G R h c a e f o t s a r t n o C l a m r o n e b e r u g i F 6 5 4 5 y t i m r o f i n U n e e r c S r e k c i l F e t i h W l l u F c e p s e h t h t i w t n a i l p m o c e b d l u o h S 7 e r u g F 6 e n i L l e x i P d a e ...

Page 28: ...G Color Pattern Figure 5 B Color Pattern Figure 6 Full White Pattern Figure 7 Dark Screen Pattern Figure 8 Black White Pattern Figure 9 25 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 29: ...adjust by the following steps a Select and enter Fine Tune function on Manual Image Adjust to adjust the image to eliminate visual wavy noise b Then select and enter Sharpness function to adjust the clarity and focus of the screen image TestSignal 1280 1024 60Hz Test Pattern Horizontal Vertical Line Thickness Pattern Check and see if the image boundary is within the screen frame If not readjust by...

Page 30: ...024 60 75Hz Digital 640 350 70Hz 640 450 75Hz 640 480 60 72 75Hz 720 400 70Hz 800 600 56 60 72 75 85Hz 1024 768 60 70 72 75 85Hz 1152 870 75Hz 1280 720 60Hz 1280 1024 60 75Hz Normally when the primary mode 1280 1024 75Hz is well adjusted and compliant with the specification the secondary display modes will also be compliant with the spec It is still necessary to check with the general test pattern...

Page 31: ...01 008 1 PC Personal Computer LTPCable P N 42 59906 001 1 Firmware Upgrade Program One additional monitor for checking the program execution Printer Port PC VP191Monitor VGACable P N 42 59901 008 Fixture 28 ViewSonic Corporation Confidential Do Not Copy VP191b s 5 2 Firmware Upgrade Procedure 5 2 1 Equipment Needed ...

Page 32: ...with VP191 Monitor by VGACable 3 Plug Power Adapter to Fixture 4 Connect Power Cord to VP191 Monitor and turn on the Power Switch 5 Connect PC to the additional monitor P2 to LTPCable JP1 to Power Adapter P1 toVGACable VGAPort Connect to Power Cord Turn on the Power Switch 29 ViewSonic Corporation Confidential Do Not Copy VP191b s 5 2 2 Set up Procedure ...

Page 33: ...6 Install GProbe Program by selecting and clicking Gprobe icon Press Yes or Next buttons until the program is finished 30 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 34: ...31 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 35: ...32 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 36: ...05 bin and vp191_v3_20a bin in the computer 2 Open bdisp txt file Key in the path where you save the driver p204_205 bin and firmware vp191_v3_20a bin 33 ViewSonic Corporation Confidential Do Not Copy VP191b s 5 2 3 Firmware Upgrade Procedure ...

Page 37: ...obe program 4 Key in batch c VP191 bdisp txt after GProbe then press Enter key to begin programming automatically the path is where you save bdisp txt file 34 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 38: ...5 The successful picture is as follows 6 Enter Burn In Mode refer to Chapter 6 3 and you could find that Serial Number disappears 35 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 39: ...r Burn In Mode and Serial Number will appear Check if the version of BIOS is correct Power Switch 8 Connect the signal and the monitor will slant to red color Refer to Chapter 6 3 to do White Balance 9 At last do All Mode Reset 36 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 40: ...C Personal Computer Power Adapter P N 47 56001 501 1 for Fixture DDC Key In Program One additional monitor for checking the program execution COM1 to RS232Cable PC VP191Monitor VGACable P N 42 59901 008 Fixture RS 232Cable P N 42 55907 001 37 ViewSonic Corporation Confidential Do Not Copy VP191b s 5 3 DDK Key In Procedure 5 3 1 Equipment Needed ...

Page 41: ...e 4 Plug Power Adapter to Fixture 5 Connect Power Cord to VP191 Monitor and turn on the Power Switch 6 Connect PC to the additional monitor P3 toDVI DVI Cable JP1 to Power Adapter P1 to RS232 Cable P2 P4 toVGA Cables Power Adapter for Fixture P N 47 56001 501 VGAPort Connect to Power Cord Turn on the Power Switch DVIPort 38 ViewSonic Corporation Confidential Do Not Copy VP191b s 5 3 2 Set Up Proce...

Page 42: ...1 Select and executeDDC Key In program 2 Key in the serial number and press Enter key 39 ViewSonic Corporation Confidential Do Not Copy VP191b s 5 3 3 DDC Key In Procedure ...

Page 43: ...cessful picture is as follows There are checksum values appearing when VGA and DVI success 4 Press button Shift to check DDC CheckSum is correct or not 40 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 44: ...r 6 3 Turn off the power switch of the rear cover of VP191 a nd turn it on again Then enter Burn In Mode again and Information of OSD Main Menu Check if the information is correct 41 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 45: ...B Performance Troubleshooting C Control Function Troubleshooting Yes This chapter provides technicians and people who have an electronic background a pri mary description about maintaining the product Moreover you can get the appropriate opera tion to solve some complicated problems of component repairing and professional problems 42 ViewSonic Corporation Confidential Do Not Copy VP191b s 6 Troubl...

Page 46: ... No Yes No Change LCDPanel Change Main Board Abnormal Color Yes Yes No Yes Replug Change FPC Cable No 1 Yes No Change LCDPanel Change Main Board Is screen black Yes Yes No Yes Change Inverter Board No 43 ViewSonic Corporation Confidential Do Not Copy VP191b s 6 2 1 Power Circuit Troubleshooting 6 2 2 Performance Troubleshooting ...

Page 47: ... Main Board Change VGACable Change LCDPanel Is screen scrolling Is screen flickering Yes Yes Yes Yes No No End Yes No No Yes Change LCDPanel Change Inverter Board Is LCD line defective Bad Uniformity Yes No Yes Change Main Board Have line bar or noise Yes Yes No 1 Yes No Yes Ghost image No Change LCDPanel Yes Refer to Notice 1 No No Change Main Board Adjust Fine Tune Sharpness or Auto Adjustment A...

Page 48: ...Yes Start No Change Main Board Change Control Board Yes End 45 ViewSonic Corporation Confidential Do Not Copy VP191b s 6 2 3 Control Function Troubleshooting ...

Page 49: ... MS 0808 7797 51 61216 001 MYLAR 1 29 EMI Tape 80560 30 50mm M MS 0808 7798 41 53615 001 EMI TAPE 2 30 EMI GASKET UGT 7 0 5 8mm M MS 0808 9541 41 54002 002 EMI GASKET 2 31 EMI Tape 80560 25 30mm M MS 0808 7799 41 54612 001 EMI TAPE 6 32 BIRD LOGO AL E015 004 ViewSonic M MS 0808 7800 35 61202 001 LOGO 1 33 CARTON AB 18 490 265 440 VP191b P BX 0601 0801 55 61201 002 CARTON 1 34 CUSHION R EPS VP191 P...

Page 50: ...E t 0 3mm VP191 M MS 0808 7797 51 61216 001 MYLAR 1 29 EMI Tape 80560 30 50mm M MS 0808 7798 41 53615 001 EMI TAPE 2 30 EMI GASKET UGT 7 0 5 8mm M MS 0808 9541 41 54002 002 EMI GASKET 2 31 EMI Tape 80560 25 30mm M MS 0808 7799 41 54612 001 EMI TAPE 6 32 BIRD LOGO AL E015 004 ViewSonic M MS 0808 7800 35 61202 001 LOGO 1 33 CARTON AB 18 490 265 440 VP191s P BX 0601 0835 55 61201 003 CARTON 1 34 CUSH...

Page 51: ...HIELDING PLATE INV Tineplate 0 3t VP191 INVERTER BRACKET 1 28 M MS 0808 9552 51 61217 001 MYLAR PROTECT FILM 400 315 0 1t PROTECTION FILM FOR PANEL 1 29 P BX 0601 1082 51 61218 003 PC 20 12 1 0t mm VP191F 1 30 P BX 0601 1083 51 61218 002 PC 30 12 0 65t mm VP191F 4 31 N A 51 62709 002 MYLAR ADHESIVE 150 45 0 25t VG710 1 32 PL PD 0714 0063 52 57503 002 RUBBER FOOT 35 10 2t VX2000 1 33 M MS 0808 9554...

Page 52: ...2 22447 101 CAP CC 22pF 5 50V NPO 0603 YCTC TEAM C162 C178 C179 C94 C95 5 79 N A 02 47174 404 CAP CE 470u 20 16V 8 11 5 105 Degree RADIA C6 1 80 N A 02 47437 101 CAP CC 47pF 5 50V NPO 0603 C163 C164 C165 C166 4 81 N A 02 50347 101 CAP CC 5pF 5 50V NPO X7R 0603 C123 C124 2 82 N A 03 00008 401 INDCTR BEAD MLB 321611 0120P N1 MAG LAYERS L10 L12 2 83 N A 03 00072 401 EMI Bead MLB 201209 0300A N1 L11 L...

Page 53: ...CAP 2 PC ABS VS08 VP191b HINGE CAP 2 1 135 C BS 0303 0377 75 61204 002 ASSY BASE COVER CS VS08 VP191 BASE COVER 1 136 M CV 0830 2430 51 61209 002 BASE COVER PC ABS VS08 VP191b 1 137 M MS 0808 7795 51 61214 001 WEAR PLATE FRONT VP191 1 138 M MS 0808 7796 51 61215 001 WEAR PLATE REAR VP191 1 139 M SCW 0824 6753 85 4A323 040 SCREW FLATE MECH M3 4 BLACK 4 140 M SCW 0824 0868 85 4A623 080 SCREW FLAT ME...

Page 54: ...SHIELDING PLATE INV Tineplate 0 3t VP191 INVERTER BRACKET 1 28 M MS 0808 9552 51 61217 001 MYLAR PROTECT FILM 400 315 0 1t PROTECTION FILM FOR PANEL 1 29 P BX 0601 1082 51 61218 003 PC 20 12 1 0t mm VP191F 1 30 P BX 0601 1083 51 61218 002 PC 30 12 0 65t mm VP191F 4 31 N A 51 62709 002 MYLAR ADHESIVE 150 45 0 25t VG710 1 32 PL PD 0714 0063 52 57503 002 RUBBER FOOT 35 10 2t VX2000 1 33 M MS 0808 955...

Page 55: ...PO 0603 YCTC TEAM C162 C178 C179 C94 C95 5 79 N A 02 47174 404 CAP CE 470u 20 16V 8 11 5 105 Degree RADIA C6 1 80 N A 02 47437 101 CAP CC 47pF 5 50V NPO 0603 C163 C164 C165 C166 4 81 N A 02 50347 101 CAP CC 5pF 5 50V NPO X7R 0603 C123 C124 2 82 N A 03 00008 401 INDCTR BEAD MLB 321611 0120P N1 MAG LAYERS L10 L12 2 83 N A 03 00072 401 EMI Bead MLB 201209 0300A N1 L11 L6 L9 3 N A 03 15100 301 INDCTR ...

Page 56: ...135 M CV 0830 2456 75 61204 003 ASSY BASE COVER PC ABS VS06 VP191s BASE COVER 1 136 M CV 0830 2454 51 61209 003 BASE COVER PC ABS VS06 VP191s 1 137 M MS 0808 7795 51 61214 001 WEAR PLATE FRONT VP191 1 138 M MS 0808 7796 51 61215 001 WEAR PLATE REAR VP191 1 139 M SCW 0824 6753 85 4A323 040 SCREW FLATE MECH M3 4 BLACK 4 140 M SCW 0824 0868 85 4A623 080 SCREW FLAT MECH M3 8 BLACK NYLOK 1 141 M SCW 08...

Page 57: ...8 Exploded Diagram And Spare Parts List 8 1 Exploded Diagram 54 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 58: ...LDING BRKT MB SECC 1 0t VP191 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 FLATE 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 P...

Page 59: ...DING BRKT MB SECC 1 0t VP191 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 FLATE 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 PA...

Page 60: ...e package and exploded overview replaceable parts list You can place an order for correct parts in the recommended parts list 57 ViewSonic Corporation Confidential Do Not Copy VP191b s 8 2 Packing for shipping Package Overview ...

Page 61: ...61201 001 D C SAMSUNG VS09 VP191b 1 ViewSonic Model Number VLCDS25973 Rev 1b Item ViewSonic P N Ref P N Description Q ty 1 M LB 0813 0706 35 58203 001 LABEL CARTON 76 76mm 1 2 A CD VP191S 36 61201 004 USER GUIDE CD VP191s 1 3 A PC 0106 0272 42 50115 001 CABLE POWER CORD 1830mm SP30 IS14 1 4 M MS 0808 9911 51 61220 001 PE BAG LDPE 150 65 0 04t mm VP171 191 1 5 A VC 0101 0261 42 59901 003 CABLE VGA ...

Page 62: ...he PE bag on the monitor 2 Lower the stand of the monitor then put the Cushions on the monitor 59 ViewSonic Corporation Confidential Do Not Copy VP191b s 8 3 Packing Procedure 3 Put the monitor into the carton ...

Page 63: ...as the following picture 4 Put the VGAcable DVI D cable User s Guide and Power Cord into the carton close the cover of carton and tape Cables User sGuide 60 ViewSonic Corporation Confidential Do Not Copy VP191b s 5 Tape the carton closed ...

Page 64: ...Cap off Hinge Cap Oval Cap 2 Unscrew four screws that secure Stand unit and detach Stand unit from the monitor Stand unit 85 5A124 080 61 ViewSonic Corporation Confidential Do Not Copy VP191b s 8 4 Procedure of Disassembly 8 4 1 Disassembly of Stand Unit From Monitor ...

Page 65: ...0 3 Unscrew four screws of Base Plate to remove Hinge Base Cover 4 Unscrew three screws that secure Base Plate to separate Base Plate from Base Cover Base Plate Hinge Base Plate 62 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 66: ...cure Front Arm to detach Front Arm from Hinge RearArm FrontArm Hinge Hinge 85 UA123 080 85 UA123 080 1 X4 1 Unscrew four screws of Rear Cover then detach LCD Panel module from Rear Cover Rear Cover Rear Cover LCDPanel Module 85 1F123 080 63 ViewSonic Corporation Confidential Do Not Copy VP191b s 8 4 2 Disassembly of Rear Cover ...

Page 67: ...30 85 1C124 060 2 Disconnect the wire connect between M B and Power Board 3 Unscrew 10 screws that secure M B Shielding Bracket and remove the EMI tape to remove M B Shielding Bracket M B Shielding Bracket 3 64 ViewSonic Corporation Confidential Do Not Copy VP191b s 8 4 3 Disassembly of Inverter Board Main Board and Power Board ...

Page 68: ...re Power Board to remove Power Board Detach Power Board Mylar Power Board Power Board Mylar Inverter Board 4 Unscrew two screws that secure Inverter Board and disconect five connectors to remove Inverter Board 65 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 69: ... Disconnect the wires which are connected to Main Board 7 2 Inlet Wire Switch Wire 1 Unscrew one screw that secures Inlet Wire and disconnect two wires that are connected to Switch Wire 2 Use flat screw driver to pull and press out Inlet and Switch Wires 1 X1 66 ViewSonic Corporation Confidential Do Not Copy VP191b s 8 4 4 Disassembly of Switch and Inlet Wires ...

Page 70: ...r from LCD Bracket Control Board wire Front Cover 85 ZA123 060 2 Unscrew four screws beside LCD Bracket to detach LCDPanel from LCDBracket LCDBracket LCDPanel 67 ViewSonic Corporation Confidential Do Not Copy VP191b s 8 4 5 Disassembly of Front Cover Module and LCD Panel ...

Page 71: ...3 3 Turn LCD Panel around and remove the tape on the wire to disconnect the wire 68 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 72: ...M5120 FJ 11AA PANEL 14 318MHz EEPROM EEPROM 50 60Hz INPUT INPUT TMDS Pm39LV010R A D BUS 24LC16B LVDS Singal RB GB BB 0 7 RA GA BA 0 7 INPUT EEPROM Multiplexer 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 ...

Page 73: ... L4 22uH L5 22uH C53 NC C34 0 1uF R1 330 1 C43 0 1uF C52 NC R13 33 D1 IN5822 C176 0 1uF R6 0 R12 10K C15 100uF 16V U2 XC6201 3 1 2 VI VO GND R2 NC L10 BEAD 1206 R5 1K C33 0 Q3 2N3904 1 2 3 C27 100uF 16V C4 100uF 16V C21 10k C39 0 1uF C8 0 1uF C19 100uF 16V C41 0 1uF L1 22uH C36 0 1uF U4 AP1501 1 2 4 5 3 VIN VOUT VOS S S GND C28 0 1uF R14 NC C20 NC C22 100uF 16V L6 BEAD 0805 C14 NC JP1 HEADER 10 2 ...

Page 74: ...47 75 R52 NC U6 ICL7660S 1 2 3 4 8 7 6 5 BOOST CAP GND CAP V OSC LV Vout R30 NC R136 50 0 C78 0 01uF C79 0 01uF C71 0 01uF R36 0 R33 100 C55 0 1u C76 0 01uF C77 0 01uF C56 0 1u R137 NC R32 0 C60 100uF 16V R136 NC C80 0 01uF R42 0 R137 55 0 R43 100 R31 0 R38 100 R25 NC C75 0 01uF R19 100 R28 NC R26 NC 1 2 3 SOT23 D2 BAV70 R27 0 R16 2 2K R20 100 C69 0 1u R21 NC U7 24LC21A 4 8 1 2 3 7 6 5 GND VCC NC ...

Page 75: ...RX2 RX1 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_DAT...

Page 76: ... ER3 ER1 ER2 DRE2 DRE0 DRE1 DRE3 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...

Page 77: ...155 0 1uF 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...

Page 78: ...R106 510 R115 2 2K R104 0 U16C 74LVC126 9 8 10 R112 33 R124 1k R105 0 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 R100 100 U16D 74LVC126 12 11 13 C169 0 1uF R97 2 2K C162 22pF C160 0 1uF R110 0 JP11 SMD 1 2 3 4 5 6 7 8 9 10 C168 0 1uF R114 2 2K R101 100 R116 100 R96 2 2K R120 NC R113 33 U15 PCB2421 4 8 1 2 3 7 6 5 GND VCC A0 A1 A2 WP SCL ...

Page 79: ...11 PCB Layout Diagrams Main Board 76 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 80: ...Main Board 77 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 81: ...Control Board 78 ViewSonic Corporation Confidential Do Not Copy VP191b s ...

Page 82: ...g VP191b s 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 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 Adjusting Procedure 2 Spe...

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