ViewSonic VX724-1 VS10049 User Manual Download

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Model No.

VS10049

”

Color TFT LCD Display

Service Manual

ViewSonic V

X724

ViewSonic

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

(

VX724

-1

_SM

Rev

1b Jun.

200

)

Summary of Contents for VX724-1 VS10049

Page 1: ...Model No VS10049 17 Color TFT LCD Display Service Manual ViewSonic VX724 1 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 VX724 1_SM Rev 1b Jun 2006...

Page 2: ...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 time in the contents hereof with...

Page 3: ...Specification 5 3 Front Panel Function Control Description 17 4 Circuit Description 23 5 Adjustment Procedure 35 6 Troubleshooting Flow Chart 57 7 Recommended Spare Parts List 63 8 Exploded Diagram a...

Page 4: ...ause 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 fro...

Page 5: ...e 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 s...

Page 6: ...he monitor Do not touch the surface of the polarizer If the surface of the panel is pressed by fingers this may cause MURA Take out the monitor by grasping the cushion If the monitor is removed by gra...

Page 7: ...hods Incorrect Methods Place the monitor on a clean soft foam pad If the monitor is placed on foreign objects that could scratch the surface of the panel 4 ViewSonic Corporation Confidential Do Not Co...

Page 8: ...Green 2 TMDS 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 DDC 1 2B Compl...

Page 9: ...ltage for one cycle with no damage Power Supply Missing Cycle Immunity Shall be able to function properly without reset or visible screen artifacts when cycle of AC power is randomly missing at nomina...

Page 10: ...Yes 9 640 x 480 85Hz 43 27kHz No No 10 720 x 400 70Hz 31 5kHz Yes Yes 11 800 x 600 56Hz 35 1kHz Yes Yes 12 800 x 600 60Hz 37 9kHz Yes Yes 13 800 x 600 75Hz 46 9kHz Yes Yes 14 800 x 600 72Hz 48 1kHz Y...

Page 11: ...nge Blank Time for image stability 3 seconds Max excluding Auto Image Adjust time Under DOS mode 640 x 350 720 x 400 640 x 400 it should recall factory setting when execute Auto I mage Adjust The moni...

Page 12: ...ter 30 minute warm up 240 cd m2 Min after 30 minute warm up Brightness Uniformity 80 typ 75 min MIN LUMINANCE IN 9 POINTS MAX LUMINANCE IN 9 POINTS Contrast Ratio 500 1 Typ 300 1 Min Color Depth 16 mi...

Page 13: ...htness Uniformity Dw 1 25 typ 1 33 max dw Max luminance of 9 points Min luminance of 9 points Contrast Ratio 500 1 typ 300 1 min Color Depth 16 2 million colors 6 2 bit panel Viewing Angle Horizontal...

Page 14: ...htness Uniformity Dw 1 25 typ 1 33 max dw Max luminance of 9 points Min luminance of 9 points Contrast Ratio 600 1 typ 400 1 min Color Depth 16 2 million colors 6 2 bit panel Viewing Angle Horizontal...

Page 15: ...Color Temperature 6500K Same as the Luminance in section 4 7 TFT LCD PANEL Lv Def Condition Contrast Default Brightness Default Color Temperature 6500K Lv Def Lv Max x 100 85 Display Size Horizontal D...

Page 16: ...reen 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 w...

Page 17: ...r Cover Gap The max gap between the bottom of the front bezel and the top of the speaker cover shall be less than 1 2 mm The gap deviation must be less than 0 3mm External Jumpers There shall be no ex...

Page 18: ...The carton shall withstand 10 trips by any combination of air rail land or sea transportation Shipping Carton Type One piece construction with double wall 1 08 Kg Shipping Carton Handholds Yes on side...

Page 19: ...Six Faces 76 2 cm 3 Edges Radiating From Weak Corner 76 2 cm Drop Test Data shall be submitted for approval to ViewSonic before Mass Production ENVIRONMENTAL Operating Temperature 0 C to 40 C Storage...

Page 20: ...rolls through menu options and adjusts the displayed control Also a shortcut to display the Contrast adjustment control screen Displays the control screen for the highlighted control Also toggles betw...

Page 21: ...justments 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 1280 x 1024 60Hz video signal to the LCD...

Page 22: ...ss adjusts background black level of the screen image Input Select allows you to toggle between an analog and a digital signal Color Adjust provides several color adjustment modes including preset col...

Page 23: ...Timing Mode colors return to the 6500K factory preset Information displays the timing mode video signal input coming from the graphics card in the computer the LCD model number the serial number and...

Page 24: ...boundaries Sharpness adjusts the clarity and focus of the screen image Setup menu displays the menu shown below The Setup Menu controls are explained below Language select allows the user to choose t...

Page 25: ...Background allows the user to turn the On Screen Display background On or Off Memory Recall returns the adjustments back to factory settings if the display is operating in a factory Preset Timing Mode...

Page 26: ...INPUT SELECT up arrow button down arrow button button 1 MENU 1 2 The D sub 15 pin connector DVI I connector and AC IN jack are located on the back side of the cabinet 1 3 The OSD menu includes the fol...

Page 27: ...10 RX1 TMDS positive differential input channel 1 11 GND Logic Ground 12 RX3 Reserved No connection 13 RX3 Reserved No connection 14 5V Power 15 GND Logic Ground 16 HP SENSE Pin Pull High 17 RX0 TMDS...

Page 28: ...ay can automatically detect and display input signals whose timing falls within the following limits Horizontal Sync frequency 30 82 kHz Vertical Sync frequency 56 75Hz 3 4 Signal level and input impe...

Page 29: ...________________________________________ 08 09 ID Manufacturer Name VSC 11 10 Product ID Code 181C 12 15 Last 5 Digits of Serial Number Not Used 16 Week of Manufacture 01 17 Year of Manufacture 2005 1...

Page 30: ..._________________________________________________________________ Horizontal Image Size 338 mm Vertical Image Size 270 mm Refreshed Mode Non Interlaced Normal Display No Stereo Horizontal Active Time...

Page 31: ...____________________________________________________________________ 90 107 Detailed Timing Descriptor Block 3 Monitor Range Limits Min Vertical Freq 50 Hz Max Vertical Freq 85 Hz Min Horiz Freq 30 KH...

Page 32: ..._____________________________________________________ 08 09 ID Manufacturer Name VSC 11 10 Product ID Code 181C 12 15 Last 5 Digits of Serial Number Not Used 16 Week of Manufacture 01 17 Year of Manuf...

Page 33: ...108 00 MHz ______________________________________________________________________ Horizontal Image Size 338 mm Vertical Image Size 270 mm Refreshed Mode Non Interlaced Normal Display No Stereo Horizon...

Page 34: ...____________________ 72 89 Detailed Timing Descriptor Block 2 Monitor Serial Number PSN050100001 ______________________________________________________________________ 90 107 Detailed Timing Descripto...

Page 35: ...ek RTD2523 The RTD2523 is a graphics processing IC designed for LCD monitors It provides all key IC functions required for LCD displays On chip functions include a high speed triple ADC PLL high scali...

Page 36: ...ed to serve as a 3 3 V or 2 5 V regulator 6 1 3 Power Regulator AIC1117CY U1 U3 The AIC1117CY is a monolithic control IC containing the primary functions required for DC to DC converters The device co...

Page 37: ...urrent 3 5A Turn on delay 3secs 6 2 Power Inverter Board This is a specific power inverter board for VX912 monitor with output of 40W 12V 3 5A It provides 12 VDC to drive the four cold cathode fluores...

Page 38: ...to decrease the brightness Press the 2 button to enter the contrast adjustment page Press the 1 button to exit the page 3 Input Select Page Press the 2 button to switch to digital input mode 4 Color...

Page 39: ...to shift the image upward Press the button to shift the image downward 2 Horizontal Size Item Press the 2 button to enter the horizontal size adjustment page Press the 1 button to exit the page Press...

Page 40: ...tton to shift the menu to the right Press the button to shift the menu to the left b Vertical Position Option Press the 2 button to enter the horizontal position adjustment page Press the 1 button to...

Page 41: ...the button to highlight the previous item or the button to highlight the next item Press the 1 Menu button to exit the Main Menu 1 Auto Image Adjust Page Press the 2 button to execute the auto image a...

Page 42: ...e manual image adjustment page Press the 1 button to exit the page Press the button to highlight the previous item or the button to highlight the next item 1 Sharpness Item Press the 2 button to enter...

Page 43: ...m Press the 2 button to enter the OSD time out adjustment page Press the 1 button to exit the page Press the button to increase the OSD time out Press the button to decrease the OSD time out 5 OSD Bac...

Page 44: ...f the screen If the V Sync signal rate is greater than than 85Hz or its resolution is greater than SXGA the Out of Range message will appear in the center of the screen Activating Factory Mode and Bur...

Page 45: ...2Hz 37 9kHz Yes Yes 8 640 x 480 75Hz 37 5kHz Yes Yes 9 640 x 480 85Hz 43 27kHz Yes Yes 10 720 x 400 70Hz 31 5kHz Yes Yes 11 800 x 600 56Hz 35 1kHz Yes Yes 12 800 x 600 60Hz 37 9kHz Yes Yes 13 800 x 60...

Page 46: ...re set to 100 Pattern 2 3 RGB color performance RGB color Check the color temperature of RGB signal color Pattern 3 4 5 4 Sub pixel defect RGB color Check for sub pixel defects Pattern 3 4 5 5 Full wh...

Page 47: ...Pattern 5 Pattern6 Pattern 7 Pattern 8 Pattern 9 44 ViewSonic Corporation Confidential Do Not Copy VX724 1...

Page 48: ...puter LPT cable Fixture LM5ISP Firmware upgrade program When examining a monitor please check whether the firmware version is the latest If not please follow the procedure below to upgrade to the late...

Page 49: ...rdware PC or notebook parallel printer cable ISP tooling Software If OS is Win2000 or WinXP please install PORT95NT exe In order to ensure that the system can execute the ISP program please adjust the...

Page 50: ...ble click the PORT95NT exe icon in Windows and install the program see Fig 0 1 3 Continue through the installation process by pressing Next four times see Fig 0 2 47 ViewSonic Corporation Confidential...

Page 51: ...ig 0 3 Fig 0 4 4 Choose Typical then press Next see Fig 0 3 5 Continue through the installation process by pressing Next four times see Fig 0 4 48 ViewSonic Corporation Confidential Do Not Copy VX724...

Page 52: ...0 5 Install ISP 1 The user may download the ISP driver and PORT95NT installation package from the Myson Century website www myson com 2 The files extracted from the ZIP file are listed in Fig 1 0 Doub...

Page 53: ...ess the Next button to continue see Fig 1 1 4 Press the Change button to change the install path if desired and then press the Next button to continue see Fig 1 2 50 ViewSonic Corporation Confidential...

Page 54: ...Fig 1 3 Fig 1 4 5 Press the Install button to continue see Fig 1 3 6 When installation has finished press the Finish button see Fig 1 4 51 ViewSonic Corporation Confidential Do Not Copy VX724 1...

Page 55: ...he program menu default setting see Fig 2 1 2 The security file is a key to use ISP functions press the OK button See Fig 2 2 3 The warning shown in Fig 2 3 is used to remind the user that a CPU rate...

Page 56: ...bus Security code 4 As shown in Fig 2 4 press the Create Security File button to key in a security code and use the slider bar to adjust the speed of the IIC bus 53 ViewSonic Corporation Confidential...

Page 57: ...t requires two command numbers and the commands must be keyed in sequentially 7C 4C 77 The command numbers and commands must be set by the user while coding For more details please refer to section 6...

Page 58: ...pendix C Using ISP to program MCU 1 As shown in Fig 3 1 select the MTV type first load the binary or intel hex file to be programmed into the MCU click OK then press the RUN button 55 ViewSonic Corpor...

Page 59: ...d file will be cleared 3 CRC cyclic redundancy check the host can check the result in the CRC register instead of reading every byte in flash The Check MCU CRC OK message indicates that the host has v...

Page 60: ...1 Display color abnormal 6 Troubleshooting Flow Chart 57 ViewSonic Corporation Confidential Do Not Copy VX724 1...

Page 61: ...heck CN 6 R79 Change M B NO NO NO NO Change adaptor Repair open short Change X1 X2 Change failed part NO Fix power supply circuit OK OK Open short Pin 40 of U6 Check power supply 12V 5V 2 5V 3 3V 2 Mo...

Page 62: ...3 Monitor white screen 59 ViewSonic Corporation Confidential Do Not Copy VX724 1...

Page 63: ...4 Monitor black screen 60 ViewSonic Corporation Confidential Do Not Copy VX724 1...

Page 64: ...5 Analog input always shows NO SIGNAL 61 ViewSonic Corporation Confidential Do Not Copy VX724 1...

Page 65: ...6 Digital input always shows NO SIGNAL 62 ViewSonic Corporation Confidential Do Not Copy VX724 1...

Page 66: ...011 cushion 1 23 End cap R P FM 0602 0876 HBL7V008018 cushion 1 24 EPE bags P 00000434 HAL7V005018 EPE bags 1 25 Plastics Rubber Plug Vesa Added 07 15 05 M 00003441 GAL7V013011 Rubber Plug Vesa 4 M Mo...

Page 67: ...sticker on carton 1 28 Rubber Plug Vesa M 00003441 GAL7V013011 Rubber Plug Vesa 4 29 LCD film L7VC M MS 0808 7399 JXL7V003017 LCD FILM 1 30 Packing Material EPE bags P 00000434 HAL7V005018 EPE bags 1...

Page 68: ...005011 LOGO PLATE ELLIPSE L7VC FEL7V005 REV3A 1 35 M MS 0808 9411 FBL70008014 LOCK METAL L70B FBL70008 REV3A GP 1 36 M CV 0830 2542 FBL7V042011 HINGE L L7VD FBL7V042 REV3B 1 37 M CV 0830 2544 FBL7V043...

Page 69: ...007011 END CAP L L7VD HBL7V007 REV3A 1 83 P FM 0602 0876 HBL7V008018 END CAP R L7VD HBL7V008 REV3A 1 84 M LB 0813 0747 HCL7V004013 CORE LABEL HCL7V004 REV3A 1 85 N A HCL7V029016 ID LABEL VX724 L7VD HC...

Page 70: ...B 00002522 DD0L9V0B000 CABLE MB OVER DRIVER 30P 50MM L9V 5 GP 1 39 N A FCL7G001016 AL FOIL L7G FCL7G001 REV3A HAN GP 1 40 N A GAL7E002013 LCD RUBBER L7E GAL7E002 REV3B GP 1 41 N A FCL9V002016 POWER MY...

Page 71: ...8 Exploded Diagram and Spare Parts List 68 ViewSonic Corporation Confidential Do Not Copy VX724 1...

Page 72: ...7V042011 Hinge L 1 17 M SCW 0824 6825 MM30040IJ21 Screw M3 4 I 4 18 B CB 0206 0188 23L7VBB0034 Button B ass y 1 19 M MS 0808 9411 FBL70008014 Lock Metal 1 20 M CV 0830 2543 EAL7V021013 LCD cover 1 21...

Page 73: ...BBJ1 SCREW F3 0 7 0 B NI 4 16 M CV 0830 2542 FBL7V042011 Hinge L 1 17 M SCW 0824 6825 MM30040IJ21 Screw M3 4 I BNI 4 18 B CB 0206 0188 23L7VBB0034 Button B ass y 1 19 M MS 0808 9411 FBL70008014 Lock M...

Page 74: ...02838 HFL7V013015 Carton 1 7 M LB 0813 1042 HCL7V019011 Carton label 1 8 P 00000434 HAL7V005018 EPE bag 1 PACKING PART LIST VX724 1 VX724 1 ViewSonic Model Number VS10049 Rev 1a Item ViewSonic P N Ref...

Page 75: ...procedure 1 Apply protective film to the display surface 2 Put the monitor in EPE bag and seal the bag with tape 3 Fit the cushions onto the monitor 72 ViewSonic Corporation Confidential Do Not Copy...

Page 76: ...the accessories into the carton QSG Power cord Then close the carton Disassembling the monitor 1 Turn the monitor to face the back and remove the I O cover 2 Remove the stand back cover 73 ViewSonic...

Page 77: ...ack hinge screws and separate the stand and head pieces 4 Place the monitor face down on a soft flat stable surface 5 Separate the back cover and the front bezel 74 ViewSonic Corporation Confidential...

Page 78: ...the button board B B and pull the cable out from the 7 Remove the B B 8 Remove the screws on the PCB shield remove the PCB shield Screws connector on the main board M B 75 ViewSonic Corporation Confi...

Page 79: ...9 Remove the MB LCD connector and loosen the four screws on the PCB holder Screws 10 Separate the PCB holder from the panel 76 ViewSonic Corporation Confidential Do Not Copy VX724 1...

Page 80: ...11 Loosen the four screws on the sides of the panel 12 Remove the front bezel and panel 77 ViewSonic Corporation Confidential Do Not Copy VX724 1...

Page 81: ...13 Remove the four hexagon screws beside the DVI D SUB connectors 14 Remove the screws that fix the power board and main board 78 ViewSonic Corporation Confidential Do Not Copy VX724 1...

Page 82: ...CPU MTV312V64 RST Keypad SCL SCL SDA SDA BRIGHTNESS 5V Switch Si2301DS RTD2523 Triple ADC Interface Clock GEN Host Interface Panel Interface EEPROM 24C16 Crystal 24 576MHz IRQ AR AG AB HSYNC VSYNC ON...

Page 83: ...80 ViewSonic Corporation Confidential Do Not Copy VX724 1...

Page 84: ...739 RSDS AND LVDS 2 5V POWER PC VGA LCDVCC 3 3V 3 3V 2 5V LCDPWR_ON12V INVCTRL 12V EEPROM 24LC16 SCALAR RTD2523 LCD PANEL 17 19 RSDS AND LVDS AC 90 264V BRIGHTNESS ANALOG RGB LCDPWR_ON3 3V DDC MICRO C...

Page 85: ...6 D20 Z5 6 NC 1 3 L10 0 6 R49 100 6NC D27 Z5 6 NC 1 3 C26 22P 6 R34 100 6 C18 0 047u 6 C30 0 1U 6 NC D9 DAN217K NC 2 1 3 R31 100 6 D24 Z5 6 NC 1 3 R33 100 6 L9 0 6 D28 Z5 6 NC 1 3 R45 2K 6 NC R46 100...

Page 86: ...4 98 113 110 112 127 25 24 21 22 23 20 19 18 17 16 78 79 80 81 82 85 86 87 88 89 90 106 107 91 51 52 53 55 59 60 61 62 63 64 65 66 67 68 73 74 75 76 77 104 93 102 103 101 100 94 99 92 36 34 105 46 44...

Page 87: ...6 R87 33K 6 R80 2K 6 R40 4 7K 6 R115 4 7K 6 R81 2K 6 R100 1K 6 R89 33K 6 R165 NC 100K 6 U8 24LC16 1 2 3 4 5 6 7 8 A0 A1 A2 VSS SI SCK WP VCC Q12 2N3906 2 1 3 R101 1K 6 R90 33K 6 C103 NC 1U 16V R102 2...

Page 88: ...2200P 6 L22 FEB_1206 C70 100U 16V Q8 SI2301DS 3 1 2 C69 0 1U 6 R70 82K 6 C67 2200P 6 L21 NC R68 10K 6 Q9 DTC144EUA 2 3 1 R67 82K 6 C74 NC 100U 16V Q11 NC DTC144EUA 2 3 1 R75 NC 82K 6 C73 NC 0 1U 6 R77...

Page 89: ...ax 3 3V LVDS_GND 5V LVDS_GND LVDS_GND LVDS_GND LVDS_GND LVDS_GND LVDS_GND L1 CX000800000 8 1 H2 MTH276D126 2 3 4 5 6 7 8 9 R2 330 6 1 R1 200 6 1 U1 AIC1084 TO252 1 2 3 ADJ GND VOUT VIN 1 H1 MTH276D126...

Page 90: ...103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152...

Page 91: ...3 2 1 C2 1u 6 R14 10K 6 NC EC1 10uF 16V R2 0 1206 U2 AIC1563 1 2 3 4 5 6 7 8 DC DE CF GND FB VCC IS BOOST C11 0 1U 6 R144 4 7K 6 Q3 MMST3906 Q4 SN7002E 3 2 1 C7 0 1u 6 C9 120p 6 EC4 330u 16V D3 RB081...

Page 92: ...11 PCB Layout Diagrams Main Board Control Board 89 ViewSonic Corporation Confidential Do Not Copy VX724 1...

Page 93: ...Flow Chart 7 Recommended Spare Parts List 8 Exploded Diagram and Exploded Parts List 9 Block Diagrams 10 Schematic Diagrams 11 PCB Layout Diagrams B Are you satisfied with this Service Manual Item Exc...

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