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ViewSonic VE910B Service Manual

19” color tft lcd display
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Service Manual

ViewSonic VE910/b
Model No. VS10715
19" Color TFT LCD Display
(VE910_SM Rev. 1a Jun. 2005)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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  • Page 1: Service Manual

    Service Manual ViewSonic VE910/b Model No. VS10715 19” Color TFT LCD Display (VE910_SM Rev. 1a Jun. 2005) ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583...

  • Page 2: Revision History

    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.

  • Page 3: Table Of Contents

    4. Circuit Description 5. Adjustment Procedure 6. Troubleshooting Flow Chart 7. Recommended Spare Parts List 8. Exploded Diagram and Exploded Parts List 9. Block Diagram 10. Schematic Diagrams 11. PCB Layout Diagrams Confidential - Do Not Copy ViewSonic Corporation VE910/b...

  • Page 4: Precautions And Safety Notices

    CFL Reflector edge softly. Otherwise the TFT Module may be damaged. (10) At the insertion or removal of the Signal Interface Connector, be sure not to rotate or tilt the Interface Connector of the TFT Module. Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 5 (14) The LCD module is designed so that the CCFL in it is supplied by a Limited Current Circuit (IEC60950 or UL1950). Do not connect the CCFL to a Hazardous Voltage Circuit. Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 6 Do not touch and that may cause“Mura” the surface of the polarizer. Take out the monitor with cushions Taking out the monitor by grasping the LCD panel. That may cause“Mura” Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 7 Place the monitor on a clean and soft foam pad. Placing the monitor on foreign objects. That could scratch the surface of the panel or cause “Mura” The panel is placed facedown on the lap. That may cause “Mura” Confidential - Do Not Copy ViewSonic Corporation VE910/b...

  • Page 8: Specification

    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 Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 9 Storage Temperature -20°C to +60°C Operating Relative Humidity 10% to 90% RH Non-Condensing Storage Relative Humidity 5% to 90% RH Non-Condensing Operating Altitude 0 to +3,000 meters Storage Altitude 0 to +12,000 meters Confidential - Do Not Copy ViewSonic Corporation VE910/b...

  • Page 10: Front Panel Function Control Description

    Green = ON Contrast adjustment control Orange = Power Saving screen. Also a shortcut to Auto Image Adjust. Displays the Main Menu Power or exits the control screen On/Off and saves adjustments. Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 11 • If necessary, make small adjustments using H. POSITION and V. POSITION until the screen image is completely visible . (The black border around the edge of the screen should barely touch the illuminated “active area” of the LCD dislay.) Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 12 — Adds red to the screen image for warmer white and 6500K richer red. Default setting. — Adds green to the screen image for a darker color. 5400K Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 13 Vertical moves the screen image up and down. (Horizontal Size) adjusts the width of the screen image. H. Size Vertical size is automatic with your LCD dislay. NOTE: Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 14 OSD Timeout screen is displayed. For example, with a “15 second” setting, if a control is not pushed within 15 seconds, the display screen disappears. Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 15 [1] + [▼ ▼ ▼ ▼ ] + [▲ ▲ ▲ ▲ ] White Balance. (Keep pushing 5 sec) [1] + [▼ ▼ ▼ ▼ ] Power Lock [1] + [▲ ▲ ▲ ▲ ] OSD Lock Confidential - Do Not Copy ViewSonic Corporation VE910/b...

  • Page 16: Circuit Description

    Analog HSYNC input 8 VSYNC Schmitt Trigger Input w/ 5V-tolerant Analog VSYNC input 9 REFP Internal ADC top de-coupling pin 22 REFM Internal ADC bottom de-coupling pin 23 RINP Analog Input Analog red input 19 Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 17 GND Ground Ground 10, 21, 31, 56 ELECTRICAL SPECIFICATIONS Analog Interface Characteristics Parameter Min Typ Max Unit Resolution 8 Bits DC ACCURACY Differential Nonlinearity ±0.5 +1.50/-1.0 LSB Integral Nonlinearity ±1 LSB No Missing Codes Guaranteed ANALOG INPUT Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 18 Exposure to absolute maximum ratings foextended periods may affect device reliability. ORDERING GUIDE Model Temperature Range Package Description Package Option TSU16AS 0°C to +70°C SDIP Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 19 There are two signal to control the inverter which come from system. Logic “high” level which send to I901 is turn on the inverter. BRI signal control brightness by DC level which was integral from PWM signal. Confidential - Do Not Copy ViewSonic Corporation VE910/b...

  • Page 20: Adjustment Procedure

    1024 x 768 @ 85Hz, 68.67kHz 1152 x 864 @ 75Hz, 67.5kHz 1152 x 870 @ 75Hz, 68.7kHz 1280 x 1024 @ 60Hz, 63.4kHz 1280 x 1024 @ 75Hz, 79.97kHz 1280x 720 @ 60Hz, 45kHz (HDTV) Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 21 Figure 9 Pattern pure white and black pattern, no other color. Fine Line Morie Pattern (Figure1) Gray Scale Pattern (Figure2) Horizontal & Vertical Thickness Pattern (Figure 3) R. Color Pattern (Figure 4) Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 22 Please select and enter “Auto Image Adjust” function on Main Menu to see if it is workable. The “Auto Image Adjust” function is aimed to offer a better screen quality by built-in ASIC. For optimum screen quality, the user has to adjust each function manually. Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 23 E. Power turn off, Press and turn on power at the same time after “▲” and “ ” power LED is on, release key, Then press “ ” key go to factory mode. (Fig.1) (Fig.1) Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 24 - 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. Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 25 After final QC step, we have to erase all saved changes again and restore the factory defaults. You should do “All Mode Reset” again. 1.5.15 Power Off Monitor Turn off the monitor by pressing “Power” button. Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 26 - Fixture for Firmware Upgrade - VGA Cable - PC (Personal Computer) - LPT Cable - Firmware Upgrade Program - One additional monitor for checking the program execution Printer Port VE910 VGA Cable LPT Cable Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 27 2.2.4 Connect Power Cord to Q190mb Monitor. 2.2.5 Connect PC to the additional monitor. 2.3. ISP Download program procedure 2.3.1 Hardware Connect status: 2.3.2 Down load isp program Step 1: Execute ISP.exe Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 28 Then press the Creat Security File Button to enter step 3. Step 3: Creat Security File Enter the three string into the blank like fig 2. Then press OK Button. Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 29 Press the Load MCU File button to select the file will be download. (*.hex) Step 5: Run Pressing the Run Button to start download program. Press OK button to Enter ISP mode. Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 30 If the test result shows “passed,” it means the connection is well. If not (failed), it means the connection has problems. Then you need to check the setup procedure or reboot the PC, or simply use another PC to do the firmware upgrade. Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 31 2. If you find the DDC does not conform to the monitor, you have to do the DDC key in. 3.1. Equipment Needed VE910 Monitor DDC Card RS232 cable Barcode Reader VGA Cable VE910 DDC Card RS-232 Cable VGA Cable Barcode Reader Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 32 (when key in DVI DDC information, use VGA transform to DVI port ) 3.2.4 Connect Power Cord to VE910 Monitor. 3.3. DDC Key In Procedure 3.3.1 Run DDC.exe 3.3.2 Choose model number and conform the Time then Press “ENTER” key. Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 33 3.3.3 When appear the PIC “ choose DDC Card”, Press ALT+2 Enter DDC 2B test interface. Choose DDC Card 3.3.4 Press F8 to choose corresponding model.DAT (VE910.DAT press “ENTER” key) Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 34 3.3.5 Press F9 enter the download interface 3.3.6 Key in the serial number or use the barcode reader to scan the barcode of the monitor, and press “ENTER” key. Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 35 3.3.7 The successful picture is as follows. ”Compare EDID ：OK! Press any key to continue”. 3.3.8 Let VE910 active then see the information in OSD, it shows ”Serial NO : PPZ0517A3178” Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 36 3.4. Check Method Use ViewSonic EDID Editor Connect the VE910 to PC with VGA Cable. Excute the EDID Editor, then Press Ctrl+F5. If the DDC is correct, you can see the information as follow: Confidential - Do Not Copy ViewSonic Corporation...

  • Page 37: Troubleshooting Flow Chart

    CHECK CHECK I102 AND POWER BOARD 5V OK? SUROUND CAP CHECK CHECK I104, SUROUND I104 3.3V 3.3V CAP BEAD SUROUND CAP CHECK CHECK I103, SUROUND I103 1.8V 1.8V CAP BEAD SUROUND CAP Confidential - Do Not Copy ViewSonic Corporation VE910/b...

  • Page 38: Mcu No Function

    3.3 V ? CHECK 12 MHZ CHECK D807,I801,I801 PIN18, X101, C126 C127 OK? CHECK Y CHECK TRACE D807,I801,I801 PIN14,PIN15 RP04 RP05 CLOCK OK? CHECK CHECK D807,I801,I801 I102,EVERY TWO PIN KEYPAD SHORT? P103 OK? Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 39 I108 or Check Check Check R-pack P102 Pin102~128 Sign Cable soldering Pin 8,10,12 Check Check I106 poor I107 poor L101,102,103 C115,118,122 soldering soldering R112,115,119 C117,121,124 I108 P105 poor fail or soldering Poor soldering Confidential - Do Not Copy ViewSonic Corporation VE910/b...

  • Page 40: Recommended Spare Parts List

    P-00003015 2012179900 6P21 Plastics: STAND VE910 ABS 94HB BLACK 4001 C-00003006 2028259301 5B01 RECOMMENDED SPARE PARTS LIST (VE910b-1 for "AUO V5 Panel") ViewSonic Model Number: VS10715-1W Rev: 1a Serial No. Prefix: PPZ Item Description ViewSonic P/N Ref.P/N Location Universal number#...
  • Page 41 BOM LIST (VE910/b-1) ViewSonic Model Number: VS10715-1W Rev: 1a Universal Item ViewSonic P/N Ref. P/N Description Location Q'ty number# C-00003022 2024268701 FRONT BEZEL VE910 ABS 94HB PS-7604B 1F01 PL-00003024 2053754700 LED INDIC.-PWR VE910 PMMA 94HB COLOR CLEAR 1F02 PL-00003025 2044267101...
  • Page 42 Universal Item ViewSonic P/N Ref. P/N Description Location Q'ty number# C807 C832 C845 C907 E-C-0404-4833 2281110491 CAP,CER CC 0.1u/50V C910 C917 C921 C923 C925 C928 #N/A 2281118191 CAP,CER CC 180p/50V C808 #N/A 2281168291 CAP CER CC 6800pF/50V C812 E-C-0404-1834 2333647591 CAP,ELE 105'C EC 4.7u/ 50V 5*11 P=5.0 T...
  • Page 43 Universal Item ViewSonic P/N Ref. P/N Description Location Q'ty number# #N/A 2365335046 LINEAR IC OZ9932G SOIC-8 O2-MICRO I901 J101 J110 J111 J116 J126 J802 J903 J904 M-WR-0828-0478 2428106100 JUMPER 0.6f *10.0mm J906 J907 L801 R916 R935 M-WR-0828-0460 2428106125 JUMPER 0.6f *12.5mm...
  • Page 44 Universal Item ViewSonic P/N Ref. P/N Description Location Q'ty number# #N/A 2239211035 RES,PRE 1/4 S RN 1/4WS 110.00K F T52 MINI R808 R923 #N/A 2235560816 RES,MTL 2 RS 2WS 0.6 ohm J P=7.0 R811 E-R-0405-2306 2233433295 RES,CBN 1/4 S RD 1/4WS 3.3Kohm J T52...

  • Page 45: Exploded Diagram And Exploded Parts List

    8. Exploded Diagram and Exploded Parts List FIG.1 V901 MAIN PCB ASS'Y 5 X2 24 X5 NOTE.2 I/O Cable KEYPAD PCB ASS'Y 20 X2 NOTE.2 NOTE.1 18 X2 18 X2 15 X4 NOTE.1 FIG.1 Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 46 EXPLODED PARTS LIST (VE910/b-1) ViewSonic Model Number: VS10715-1W Rev: 1a Item ViewSonic P/N Ref. P/N Description Q'ty C-00003022 2024268701 FRONT BEZEL VE910 ABS 94HB PS-7604B C-00003023 2024268702 FRONT BEZEL VE910-B ABS 94HB MIDNIGHT GRAY PL-00003024 2053754700 LED INDIC.-PWR VE910 PMMA 94HB COLOR CLEAR...

  • Page 47: Packing Procedure

    1.4 Place the monitor into the carton and then put all the accessories into the carton. At last, close the carton and seal it with tape. (Figure 4) Power Cord Figure 3 Figure 4 User’s Guide Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 48 Disassembly Procedure 1. Disassembly of Stand unit from Monitor 1.1 Remove two Hinge Cover. 1.2 Unscrew four screws that secure Stand Unit. 1.3 Detach Stand Unit from the monitor. Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 49 2. Disassembly of Front Cover and Rear Cover 2.1 Unscrew two screws that secure Rear Cover to remove Front Cover. 2.2 Unscrew 2 screws to remove Rear Cover. Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 50 3.2. Unscrew 2 screws to remove Shielding Plate. Shielding Plate 3.3. Unscrew 2 screws and disconnect the connector to remove VGA Cable. VGA Cable 3.4. Unscrew 7 screws and disconnect the wires to remove Main Board. Main Board Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 51 3.5. Lay Panel Unit facedown and unscrew 4 screws on its right and left sides to remove Panel Unit and Keypad Board. Keypad Board Panel Unit Panel Bracket Confidential - Do Not Copy ViewSonic Corporation VE910/b...

  • Page 52: Block Diagram

    Q102 D919 ,D91 0 3.3V SCALAR Q901 I104 I101 1.8V I103 X101 SYNC 3.3VMCU R,G,B INPUT R113 I102,DDC R111 D109 ,D110,D11 2 H,V SYNC EEPROM VGA D-SUB P101 I105 X101 SCL,SDA VGA5V Confidential - Do Not Copy ViewSonic Corporation VE910/b...

  • Page 53: Schematic Diagrams

    10.1. DC - DC SOT-223 I103 VCC_1v8 AP1117T18 VCC_1v8 ( 4 ) C141 100uF/16V add heat piece VCC5V--(5,6) TO-263 VCC_3v3 I104 R139 AP1084T33 VCC_3v3 (3, 4,6 ) 1w1ohm C148 C144 C145 100uF/16V Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 54 VSYNC ( 4 ) R110 C107 Z102 R112 C108 Z101 2.2K 5.6V 5.6V 33pF 2.2K 220pF DDC-SDA R114 DDC_DAT ( 6 ) DDC-SCL R115 DDC_CLK ( 6 ) Z103 Z104 5.6V 5.6V Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 55 0.1uF ( 6 ) TCLK AD2 ( 6 ) AD1 ( 6 ) AD0 ( 6 ) AD3 ( 6 ) XOUT VCC_3v3 R162 R163 AdjBACKLIGHT ( 2 ) BRIGHT C189 10uF/50V Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 56 RXE1- LVB0P LVB0P RXE0+ RXE0+ LVB0M LVB0M RXE0- REX0- BL106-30RL-A VCC5V VLCD Q102 AP2305 ( 2,3,6 ) VCC5V R122 R124 D111 Q101 ( 6 ) onPANEL 2SC945 R123 4.7K R127 C136 1u/50V Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 57 R137 R135 RP04 P103 POWER R133 R136 LCD_ONOFF LED_AMBER LED_A LED_G LED_GREEN MENU Q103 Q104 MENU PLUS 2N3906 2N3906 MINUS DOWN EXIT SELECT C129 C130 C131 C132 C133 C134 C135 RP05 JST-PH8P-2.0-90 Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 58 10.6. KEY PAD P701 2_SELECT DOWN MENU LED_GREEN LED_AMBER LCD_ONOFF JST-PH8P-2.0-180 D701 S701 S702 S704 S703 S705 P/N : Key_pad 2202131400 Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 59 5.6K 4700PF/DIP R825 D814 0.5X3T 11.8K 1% F801 I802 R831 T2.5A/250V TLP621 I803 91K 1% C815 TL431D D810 C803 4.7U/50V 4700pF C802 R837 1K 4700pF R851 JUMPER WIRE S801 AC IN 100~240V Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 60 330PF/50V 470U/16V 1N4148 0.1uF D916 C923 R934 R929 R926 R923 SB140 0.1uF Brightness 51.1K/1% 110K/1% 91K/1% C917 Q911 R930 D914 C924 R937 R936 0.1uF AP9977GM 5.1K 1N4148 68nF 698/1% 698/1% D910 1N4148 Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 61 Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 62 Confidential - Do Not Copy ViewSonic Corporation VE910/b...
  • Page 63 Confidential - Do Not Copy ViewSonic Corporation VE910/b...

  • Page 64: Pcb Layout Diagrams

    Add.: Fax: Tel: E-mail: After completing this form, please return it to ViewSonic Quality Assurance 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) Confidential - Do Not Copy...

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