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Service Manual ViewSonic VE1920wmb-2 Model No. VS10866 19” Color TFT LCD Display (VA1920wmb-2_SM Rev. 1a Aug. 2006) ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583 Copyright Copyright © 2006 by ViewSonic Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of ViewSonic Corporation. Disclaimer ViewSonic makes no representations or warranties, either expressed or implied, with respect to the contents hereof and specifically disclaims any warranty of merchantability or fitness for any particular purpose. Further, ViewSonic reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or changes. Trademarks Optiquest is a registered trademark of ViewSonic Corporation. ViewSonic is a registered trademark of ViewSonic Corporation. All other trademarks used within this document are the property of their respective owners. Revision History Revision SM Editing Date 1a 8/23/2006 ViewSonic Corporation ECR Number Description of Changes Initial Release Editor Jamie Chang i Confidential - Do Not Copy VE1920wmb-2 TABLE OF CONTENTS 1. Precautions and Safety Notices 1 2. Specification 3 3. Front Panel Function Control Description 7 4. Circuit Description 11 5. Adjustment Procedure 12 6. Troubleshooting Flow Chart 32 7. Recommended Spare Parts List 40 8. Exploded Diagram and Exploded Parts List 42 9. Block Diagram 44 10. Schematic Diagrams 45 11. PCB Layout Diagrams 53 ViewSonic Corporation ii Confidential - Do Not Copy VE1920wmb-2 1. Precautions and Safety Notices 1.1. Appropriate Operation (1) Turn off the product before cleaning. (2) Use only a dry soft cloth when cleaning the LCD panel surface. (3) Use a soft cloth soaked with mild detergent to clean the display housing. (4) Use only a high quality, safety approved AC/DC power cord. (5) Disconnect the power plug from the AC outlet if the product will not be used for a long period of time. (6) If smoke, abnormal noise, or strange odor is present, immediately switch the LCD display off. (7) Do not touch the LCD panel surface with sharp or hard objects. (8) Do not place heavy objects on the LCD display, video cable, or power cord. (9) Do not use abrasive cleaners, waxes or solvents for your cleaning. (10) Do not operate the product under the following conditions: - Extremely hot, cold or humid environment. - Areas containing excessive dust and dirt. - Near any appliance generating a strong magnetic field. - In direct sunlight. 2. Caution No modification of any circuit should be attempted. Service work should only be performed after you are thoroughly familiar with all of the following safety checks and servicing guidelines. 3. Safety Check Care should be taken while servicing this LCD display. Because 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 water may cause discoloration or spots. (4) When the panel surface is soiled, wipe it with absorbent cotton or other soft cloth. (5) Since the panel is made of glass, it may break or crack if dropped or bumped on hard surface. (6) Since CMOS LSI is used in this module, take care of static electricity and ensure human earth when handling. (7) Do not open or modify the Module Assembly. (8) Do not press the reflector sheet at the back of the module in any direction. (9) In the event that a Module must be put back into the packing container slot after it was taken out of the container, do not press the center of the CCFL Reflector edge. Instead, press at the far ends of the 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. (11) After installation of the TFT Module into an enclosure (LCD monitor housing, for example), do not twist or bend the TFT Module even momentarily. When designing the enclosure, it should be taken into consideration that no bending/twisting forces may be applied to the TFT Module from outside. Otherwise the TFT Module may be damaged. (12) The cold cathode fluorescent lamp in the 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 is supplied by a Limited Current Circuit (IEC60950 or UL1950). Do not connect the CCFL to a Hazardous Voltage Circuit ViewSonic Corporation 1 Confidential - Do Not Copy VE1920wmb-2 Correct methods : Only touch the metal-frame of the panel or the front cover of the monitor. Do not touch the surface of the polarizer . Incorrect Methods : Surface of the panel is pressed by fingers & this may cause “ MURA “ Take out the monitor with cushion Take out the monitor by grasping the LCD panel. That may cause “ MURA“. Place the monitor on a clean & soft foam pad . Place the monitor on foreign objects . That could scratch the surface of panel ViewSonic Corporation 2 Confidential - Do Not Copy VE1920wmb-2 2. Specification Introduction TFTLCD PANEL Input Signal Sync Compatibility Compatibility Power Voltage Power Consumption Audio Ergonomics OSD Control Dimension Weight Operating Condition Storage Condition Regulation FEATURES Size Luminance (Typ, cd/㎡) Contrast Ratio (Typ) Colors ( 6 bit + 2 bit FRC) Response Time (Typ) Viewing Angle (H/V) Recommend resolution Analog (75ohms, 0.7/1.0 Vp-p) Digital Separate Sync Composite Sync Sync on Green PC Power Mac TV Box (NextVision 6) AC 100-240V, 50/60Hz On Mode(Max / Typ) Active Off Mode (Max) Amplifier / Speaker Tilt ( 20 ° to -5 °) Swivel Pivot Height Adjust [; X] [ 1 ] [▼] [▲] [ 2 ] [ ] VE1920wm/wmb 19” wide 300 cd/㎡ 500:1 16.2 M colors 8 ms 150 ° / 130 ° 1440 x 900@60Hz Yes Yes Yes No No Yes Yes Yes Yes 36W(max) / 32W(typ) 1W 1.5 W / 2.5W x 2 Yes No No 0-100mm Yes 451 x 426 x 221 (mm) Physical (W x H x D mm) 17.8 x 16.8 x 8.7 (in) 492 x478 x186 (mm) Package (W x H x D mm) 19.3 x 18.8 x 7.3 (in)) Physical (Net kg/lb) 5.1 kg ( 11.2 lb) Package (Gross Kg/lb) 6.6 kg ( 14.5 lb) Temperature (℉/℃) 41℉-95℉/+5℃-+35℃ Humidity (%) 20 % - 80 % Temperature (℉/℃) -4℉-131℉/-20℃-55℃ Humidity (%) 20 % - 85 % CB / TCO03 / UL/cUL / FCC-B / ICES 003 / Argentina-TUV/S / NOM / EPA Energy Star / TUV/Ergo / ISO13406-2 / TUV/GS / CE / GOST-R / SASO / BSMI / PSB / C-Tick / Korea (MIC) / CCC GENERAL specification Test Resolution & Frequency 1440 x 900 @ 60Hz Test Image Size Full Size Contrast and Brightness Controls ViewSonic Corporation Factory Default: Contrast = 70%, Brightness = 100% 3 Confidential - Do Not Copy VE1920wmb-2 VIDEO INTERFACE Analog Input Connector DB-15 (Analog), refer the appendix A Digital Input Connector DVI-D (Digital) ,refer the appendix B Default Input Connector Defaults to the first detected input Video Cable Strain Relief Equal to twice the weight of the monitor for five minutes Video Cable Connector DB-15 Pin out Compliant DDC 2B Video Signals 1. Video RGB (Analog) 2. DVI (Digital) Separate Video Impedance 75 Ohms (Analog) 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 Video Compatibility Shall be compatible with all PC type computers, Macintosh computers, and after market video cards 640 x 350*, 640 x 480, 720 x 400* (640 x 400*), 800 x 600, 832 x 624, 1024 x 768, 1152 x 864, 1280 x 768, 1280 x 960, 1280 x 1024, 1440 x Resolution Compatibility 900 * The image vertical size might not be full screen. But the image vertical position should be at the center. Exclusions Not compatible with interlaced video POWER SUPPLY Power Supply (Adapter) Input Voltage Range Input Frequency Range Short Circuit Protection Over Current Protection Leakage Current Efficiency Fuse Power Dissipation Max Input AC Current Inrush Current (Cold Start) Power Supply Cold Start Power Supply Transient Immunity Power Supply Line Surge Immunity Power Supply Missing Cycle Immunity Power Supply Acoustics ViewSonic Corporation Part Number: 27-D003247 90 to 264 VAC 47 to 63 Hertz OUTPUT CAN BE SHORTED WITHOUT DAMAGE FUSE 3.15A TYPICAL AT 250 VAC 75 MA (MAX) AT 240VAC / 50HZ 80 % TYPICAL AT 100VAC @60HZ INTERNAL AND NOT USER REPLACEABLE 32W(typ) 1.6 ARMS @ nominal RANGE 80 A @ 240VAC , 50HZ SHALL START AND FUNCTION PROPERLY WHEN UNDER FULL LOAD, WITH ALL COMBINATIONS OF INPUT VOLTAGE, INPUT FREQUENCY, AND OPERATING TEMPERATURE SHALL BE ABLE TO WITHSTAND AN EN61000-4-4 ±2KV TRANSIENT TEST WITH NO DAMAGE Shall be able to withstand ±2KV (L-L) and ±2.3KV (L-PE) with no damage Shall be able to function properly, without reset or visible screen artifacts, when ½ cycle of AC power is randomly missing at nominal input The power supply shall not produce audible noise that would be 4 Confidential - Do Not Copy VE1920wmb-2 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 Separate 3-prong NEMA 5-15P type plug. Length = 1.8m. Connects to display. Color = Black Schuko CEE7-7 type plug. Length = 1.8m, Connects to display. Color = Black Separate 3-prong type plug. Length = 1.8m. Connects to display. Color = Black Separate 2-prong NEMA 1-15P type plug. Length = 1.8m. Connects to display. Color = Black VESA DPMS Signaling ON Mode < 36 W (max) / 32 W (typ) ACTIVE OFF < 1 W ON Mode = N/A, ACTIVE OFF < 5 sec US Type Power Cable European Type Power Cable CCC Type Power Cable PSE Type Power Cable Power Saving Operation (Method) Power Consumption Recovery Time ELECTRICAL REQUIREMENT Horizontal / Vertical Frequency Horizontal Frequency 30 – 82 kHz Vertical Refresh Rate 50 – 85* Hz. Maximum Pixel Clock 135 MHz (EDID file is 140MHz) Sync Polarity Independent of sync polarity. Timing Table Item Timing Analog Digital 1 640 x 350 @ 70Hz, 31.5kHz Yes Yes 2 640 x 400 @ 60Hz, 31.5kHz Yes* Yes 3 640 x 400 @ 70Hz, 31.5kHz Yes Yes 4 640 x 480 @ 60Hz, 31.5kHz Yes Yes 5 640 x 480 @ 67Hz, 35.0kHz Yes Yes 6 640 x 480 @ 72Hz, 37.9kHz Yes Yes 7 640 x 480 @ 75Hz, 37.5kHz Yes Yes 8 640 x 480 @ 85Hz, 43.27kHz Yes Yes 9 720 x 400 @ 70Hz, 31.5kHz Yes Yes 10 800 x 600 @ 56Hz, 35.1kHz Yes Yes 11 800 x 600 @ 60Hz, 37.9kHz Yes Yes 12 800 x 600 @ 75Hz, 46.9kHz Yes Yes 13 800 x 600 @ 72Hz, 48.1kHz Yes Yes 14 800 x 600 @ 85Hz, 53.7kHz Yes Yes 15 832 x 624 @ 75Hz, 49.7kHz Yes Yes 16 1024 x 768 @ 60Hz, 48.4kHz Yes Yes 17 1024 x 768 @ 70Hz, 56.5kHz Yes Yes 18 1024 x 768 @ 72Hz, 58.1kHz Yes Yes ViewSonic Corporation 5 Confidential - Do Not Copy VE1920wmb-2 19 1024 x 768 @ 75Hz, 60.0kHz Yes Yes 20 1024 x 768 @ 85Hz, 68.67kHz Yes Yes 21 1152 x 864@ 75Hz, 67.5kHz Yes Yes 22 1280 x 1024 @ 60Hz, 63.4kHz Yes Yes 23 1280 x 1024 @ 75Hz, 79.97kHz Yes No 24 1280x 768 @ 60Hz, 47.78kHz Yes Yes 25 1280 x 960 @60Hz, 60kHz Yes Yes 26 1440 x 900 @ 60Hz, 55.96kHz Yes Yes *The image vertical size might not be full screen. Primary Presets 1440 x 900 @ 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 : 3 seconds (Max), excluding “Auto Adjust” time ● Under DOS mode (640 x 350, 720 x 400 & 640 x 400), there is no “Auto Adjust” feature. ● The monitor needs to do “Auto Adjust” the first time a new mode is detected but except the DOS mode 640 x 350, 720 x 400 & 640 x 400.(see section “0-Touch™ Function Actions”) ● While running Change Mode, Auto Adjust or Memory Recall, the image shall blank ViewSonic Corporation 6 Confidential - Do Not Copy VE1920wmb-2 3. Front Panel Function Control Description Front Panel Hardware Controls Power Switch (Front Head) Power Control, soft Power Switch. Power LED (Front Head) Green – ON Orange – Active Off Dark = Soft Power Switch OFF [ ] Power [ 1 ] BUTTON 1 [ 2 ] Button 2 [▲] UP ARROW BUTTON [▼] DOWN ARROW BUTTON [; X] Audio Mute on/off Front Panel Controls (Head) [;X] [ 1 ] [▼] [▲] [ 2 ] [ ] Note: Power Button, Button 1 and Button 2 and Mute Button must be one-shot logic operation. (i.e. there should be no cycling) Reaction Time OSD must fully appear within 0.5s after pushing Button 1 Short Cuts Function from the button(s) [1] Main Menu [2] Input toggle (Analog or Digital) [▼] or [▲] [▼] + [▲] [1] + [2] [1] + [▼] + [▲] To immediately activate Contrast menu. It should be change to Brightness OSD by push button [2] Recall both of Contrast and Brightness to default Toggle 720x400 and 640x400 mode when input 720x400 or 640x400 mode White Balance. (Not shown on user’s guide) [1] + [▼] Power Lock [1] + [▲] OSD Lock [;X] Audio Mute on /off Remark : All the short cuts function are only available while OSD off ViewSonic Corporation 7 Confidential - Do Not Copy VE1920wmb-2 Main Menu Controls Auto Image Adjust*1 Contrast/Brightness*2*4 Input Select Analog, Digital Audio Adjust Volume*4, Mute*4 Color Adjust sRGB, 9300K, 6500K(default), 5400, 5000, User Color [R, G, B] Information H Frequency, V Frequency, Resolution, Pixel Clock, Serial Number, Model Number, “www.ViewSonic.com” Manual Image Adjust H. Size*1, H./V. Position*1, Fine Tune*1, Sharpness*3 Setup Menu Language [English, French, German, Spanish, Italian, Finnish, Japanese, Traditional Chinese, Simplified Chinese], Resolution Notice, OSD Position, OSD Timeout, OSD Background Memory Recall *1 These functions are not available in Digital Mode *2 These functions are not available under sRGB Mode *3 These functions are not available under Native Resolution Mode *4 These functions setting can be recalled to default by [▼]+[▲] [Remark] Please refer to the detail in the Appendix C Function descriptions OSD Lock short cuts function for the buttons The OSD lock will be activated by pressing the front panel control buttons "(1), & (▲)" for 10 seconds. If the user then tries to access the OSD by pressing any of the buttons "1", "▼", "▲", "2" a message will appear on the screen for 3 seconds showing "OSD Locked". The OSD lock will be deactivated by pressing the front panel control buttons "(1), & (▲)" again for 10 seconds. Note1: When the OSD is locked will lock all functions, including “Volume” and “Mute” Note 2: Status bar indicating OSD Lock or Unlock is in progress and when complete it will indicate “OSD Locked” Note 3: OSD Lock should not lock Power Button and Power Lock function Power Lock short cuts function for the buttons The power button lock will be activated by pressing the front panel control buttons "(1), & (▼)" for 10 seconds. Locking the power button means that the user won't be able to turn off the LCD while the power button is locked. If the user presses the power button while it is locked, a message will appear on the screen for 3 seconds showing "Power Button Locked". It also means that with the power button locked, the LCD would automatically turn back "On" when power is restored after a power failure. If the power button is not in the locked mode, then power should return to it's previous state when power is restored after a power failure. The power button lock will be deactivated by pressing the front panel control buttons "(1), & (▼)" again ViewSonic Corporation 8 Confidential - Do Not Copy VE1920wmb-2 for 10 seconds. Note 1: Status bar indicating 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. Set the factory defaults as shown in Section 4-8 2. Clean all the mode setting buffer 3. Execute Auto Image Adjust Note: Memory Recall should have no effect for Language, Power Lock, User Color Settings or Input Priority Resolution Notice Actions 1. Resolution Notice OSD should show on screen after changing to non-native mode for 30 sec 2. The OSD should disappear after 10 sec or by pushing button [1] or [2] Resolution Notice function should be disabled when push button [2] under Resolution Notice OSD 0-Touch™ Function Actions 1. Execute Auto Image Adjust when new mode detected, and save the settings to buffer for further use 2. It should be reset by Memory Recall function (Should not reset by power off, power unplug and others) OSD Auto Save The OSD shall save new settings when it is turned off by the user or when it times out. There shall not be a separate save AUDIO INTERFACE (SPEAKER SPECIFICATION) Line input connection 3.5 mm stereo jack Line input signal 1 Vrms Line input impedance 20k ohms Maximum power output (Electric) 1.5W / CH Signal to Noise Ratio 72 dB Frequency response 300 TO 20KHZ Distortion 8%@1kHz There should be no audible vibration with volume at 100%. (Input Vibration Screen image signal within 1 Vrms) There should be no affect on the screen image stability under any conditions Connector PC99 requirement Audio in Lime Green pantone # 577C Cable type / length 3.5mm stereo cable / 1.8m length Audio DPMS NOTE: THERE IS NO GUARANTEE <1 W POWER CONSUMPTION IN ACTIVE OFF MODE, WHEN THE AUDIO CABLE IS CONNECTED ViewSonic Corporation 9 Confidential - Do Not Copy VE1920wmb-2 OSD Table Layer 1 Layer 2 Layer 3 Auto Image Adjust Contrast/Brightness Contrast (+ / -) Brightness (+ / -) Input Select Analog Digital Audio adjust Volume (+, -) Mute On/Off sRGB 9300K 6500K Color Adjust 5400K 5000K Red (+ / -) User Color Green (+ / -) Blue (+ / -) Information Horizontal Size +/H Position (+ / -) H/V Position Manual Image Adjust V Position (+ / -) Fine Tune +/- Sharpness +/English French German Spanish Language Select Italian Finnish Japanese Setup Menu Simplified Chinese Traditional Chinese Resolution Notice On/Off Input Priority On/Off H Position (+ / -) OSD Position V Position (+ / -) OSD Time Out 5/15/30/60 OSD Background On/Off Memory Recall ViewSonic Corporation 10 Confidential - Do Not Copy VE1920wmb-2 4. Circuit Description The TSUM57AK is total solution graphics processing IC for LCD monitors with panel resolutions up to SXGA. It is configured with a high-speed integrated triple-ADC/PLL, an integrated DVI receiver, a high quality display processing engine, and an integrated output display interface that can support RSDS panel interface format. To further reduce system costs, the TSUM57AK also integrates intelligent power management control capability for green-mode requirements and spreadspectrum support for EMI management. The TSUM57AK incorporates the world’s first coherent oversampled RGB graphics ADC in a monitor controller system. The oversampling ADC samples the input RGB signals at a frequency that is much higher than the signal source pixel rate. This can preserve details in the video signal that ordinarily would be lost due to input signal jitter or bandwidth limitations in non-oversampled systems. The TSUM57AK also incorporates a new Dynamic Frame Rate (DFR) generator for the digital output video to the display panel that preserves the advantages of a fixed output clock rate, while eliminating the output end of frame short-line. ViewSonic Corporation 11 Confidential - Do Not Copy VE1920wmb-2 5. Adjustment Procedure A. Function Test and Alignment Procedure 1. All Modes Reset You should do “All Model Reset” (Refer to Chap 3. Hot Keys for Function Controls) first. This action will allow you to erase all end-user’s settings and restore the factory defaults. 2. Auto Image Adjust The Auto Adjust is aimed to offer a best screen quality by built-in ASIC. For optimum screen quality, the user has to adjust each function manually. A.Turn the computer and LCD monitor on. B. Press the ‘Auto’ button on monitor keypad to Auto Adjust. C. The LCD monitor will start the Auto Adjust process automatically and run for 10 consecutive seconds, during which time you will notice the image change. 3. Firmware Test Patten: Burn in Model (Refer to Chap3. Hot Keys for Function Control) -Make sure the F/W is the latest version. 4. DCC Test Patten: EDID program -Make sure it can pass test program. 5. Window Shut Down Test Signal: 1280*1024@60Hz Test Pattern: Checkered Pattern Every One Pixel (50%Green & 50%Blue) Inspection Item: Flicker, Mura 6. Window BG Test Signal: 1280*1024@60Hz Test Pattern: Window standard pattern Inspection Item: Line Defect, Function Defect & Mura 7. 25 Gray Test Signal: 1280*1024@60Hz Test Pattern: Full Screen 25% White (Gray) Inspection Item: Particle, Line Defect & Mura ViewSonic Corporation 12 Confidential - Do Not Copy VE1920wmb-2 8. 50 Gray Test Signal: 1280*1024@60Hz Test Pattern: Full Screen 50% White (Gray) Inspection Item: Bright Dot, Particle, Line Defect & Mura 9. White Box Test Signal: 1280*1024@60Hz Test Pattern: Window standard pattern Inspection Item: Particle, Line Defect, Power, Image Remain & Mura 10. Black Box Test Signal: 1280*1024@60Hz Test Pattern: Window standard pattern Inspection Item: Bright Dot, Line Defect & Power 11. RED Test Signal: 1280*1024@60Hz Test Pattern: Full Screen Red Inspection Item: Bright Dot, Partial & Line Defect 12. Green Test Signal: 1280*1024@60Hz Test Pattern: Full Screen Green Inspection Item: Bright Dot, Partial & Line Defect 13. Blue Test Signal: 1280*1024@60Hz Test Pattern: Full Screen Green Inspection Item: Bright Dot, Partial & Line Defect 14. Gray_Scale_0-100_V64 Test Signal: 1280*1024@60Hz Test Pattern: Vertical 64 (256) Gray Scale (Right → Left,From 0 to 100% White) Inspection Item: Line Defect & Function Defect ViewSonic Corporation 13 Confidential - Do Not Copy VE1920wmb-2 15. Function Test Display pattern Item Pattern Description Remark 1 Gray_Scale_0-100_V Vertical 64 (256) Gray Scale (右→左,From 0 to 100% White) Figure 1 2 Gray_Scale_0-100_H Horizontal 64 (256) Gray Scale (上→下,From 0 to 100% White) Figure 2 3 Black Full Screen Black Figure 3 4 Red Full Screen 50% Red Figure 4 5 Green Full Screen 50% Green Figure 5 6 Blue Full Screen 50% Blue Figure6 7 White Full Screen White Figure7 8 Black_Tile Black Tile Under White Background Figure 8 ViewSonic Corporation 14 Confidential - Do Not Copy VE1920wmb-2 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 ViewSonic Corporation 15 Confidential - Do Not Copy VE1920wmb-2 BIOS update procedure Mstar ISP Tool User Manual Setp1: Take the cable of Print Port to connect Print Port of PC and Print Port of fixture(and EDID burn in the same fixture) to connect VGA Cable between D-sub of fixture and D-sub of AD Board of monitor,the monitor must be turned on the power。 Step 2 : Open ISP Tool ViewSonic Corporation 16 Confidential - Do Not Copy VE1920wmb-2 Step 3 : Press ”connect” into ISP mode,display the model of Flash,The dialog of figure is displayed “Device Type is Pm25LV512” then press ”確定”。 Step 4: to down load the program of BIOS (*.bin)。 Press ”Read” then enter as below figure,then press If down load BIOS that is successful as below figure then press”確定”。 ViewSonic Corporation 17 Confidential - Do Not Copy VE1920wmb-2 Step 5 : Press ”Auto” into below figure that display the value of BIOS Checksum below figure is displayed “0x1626” then press ”Run” to execute the BIOS procedure。 The BIOS procedure is displayed the message ”Verify OK” that the BIOS procedure is successful。 Step 6 : Press ”Dis Con” then leave the mode of ISP。 ViewSonic Corporation 18 Confidential - Do Not Copy VE1920wmb-2 Step 7: When select ”ReConnect” and press “Run” then repeat to connect the mode of ISP into next the action of BIOS procedure ViewSonic Corporation 19 Confidential - Do Not Copy VE1920wmb-2 Monitor Assembly and Disassembly 1 Separate Stand Assy 1.1 Remove Seat Assy Step 1 : Press Stand Assy’s bottom part in Seat Hinge Step 2: Remove Seat Assy 1.2 Separate Stand Assy Step 1 : Loose and Remove 2 screws Step 2 : Remove Stand Assy ViewSonic Corporation 20 Confidential - Do Not Copy VE1920wmb-2 2 Separate Rear Cover (Rear Case Assy) Separate Bezel hooks to take Bezel and Rear Cover apart. Step 1 : Remove Cover Hinge Step 2 : Loose and Remove 2 screws Step 3 : Separate Bezel hooks to take Bezel and Rear Cover apart. Step 4 : Remove Rear Cover Step 5 : Completed ViewSonic Corporation 21 Confidential - Do Not Copy VE1920wmb-2 3 Remove Power Board and AD Board 3.1 Remove Metal Cover Step 1 : Remove FFC from OSD Board. Step 2 : Loose and remove 4 screws. Step 3 : Lift up LCD module and remove bezel. Step 4 : Remove 2 pieces of Backlight wires. Step 5 : Remove 2 pieces of Backlight wires. ViewSonic Corporation 22 Confidential - Do Not Copy VE1920wmb-2 Step 6 : Loose and remove 4 screws. Step 7 : Loose and remove 2 screws. Step 8 : Loose and remove 4 screws. Step 9 : Remove the PCBA Cover 3.2 Remove Power Board and AD Board Step 1 : Loose and remove 4 screws. ViewSonic Corporation 23 Confidential - Do Not Copy VE1920wmb-2 Step 2 : Remove Lips Board Step 3 : Remove 2 pieces of FFCs. Step 4 : Remove the FFC. Step 5 : Loose and remove 4 screws. Step 6 : Remove AD PCBA. Step7 : Completed. ViewSonic Corporation 24 Confidential - Do Not Copy VE1920wmb-2 4 Change New AD Board and Power Board Step 1 : Place new AD Board. And fasten 4 fixed screws. Step 2 : Fasten 4 fixed screws. Step 3 : Insert FFC. Step 4 : Insert 2 pieces of FFCs . Step 5 : Insert new Lips Board. ViewSonic Corporation 25 Confidential - Do Not Copy VE1920wmb-2 Step 6 : Fasten 4 fixed screws. Step 7 :Completed. 5 Remove OSD Board Step 1 : Separate both Audio Cable. Step 2 : Take OSD Board apart. Step 3: Completed. ViewSonic Corporation 26 Confidential - Do Not Copy VE1920wmb-2 6 Change New OSD Board Step 1 : Place New OSD Board. Step 2 : Insert Audio cable to connectors of New OSD Board. Step 3: Completed. 7 Add Cover to AD PCB Heatsink Step 1 : Join the PCB Cover. Step 2 : Fasten 4 fixed screws. Step 3 : Fasten 2 fixed screws ViewSonic Corporation 27 Confidential - Do Not Copy VE1920wmb-2 Step 4 : Fasten 4 fixed screws. Step 5 : Insert 2 pieces of Backlight wires. Step 6 : Insert 2 pieces of Backlight. wires. Step 7 : Join LCD module and remove bezel. Step 8 : Fasten 4 fixed screws. ViewSonic Corporation 28 Confidential - Do Not Copy VE1920wmb-2 Step 9 : Insert FFC. Step 10 : Completed. 8 Rear Cover Assy Assembly Step 1 : Place Rear Cover Step 2 : Fasten 2 screws Step 3 : Remove Cover Hinge ViewSonic Corporation 29 Confidential - Do Not Copy VE1920wmb-2 9 Stand Assy Assembly Step 1: Place Seat Assy Step 2 : Fasten 4 screws Step 3: Join Seat Assy ViewSonic Corporation 30 Confidential - Do Not Copy VE1920wmb-2 Packing For Shipping And Disassembly Procedure Packing For Shipping 1. Packing Procedure 1.1 Paste protection film to protect the monitor. (Figure 1) 1.2 Put the monitor in the PE bag and seal the bag with tape. (Figure 2) Figure 2 Figure 1 1.3 Put the cushions on the monitor. (Figure 3) 1.4 Place the monitor into the carton and then put all the accessories into the carton. As last, close the carton and seal it with tape. (Figure 4) Figure 4 Figure 3 ViewSonic Corporation 31 Confidential - Do Not Copy VE1920wmb-2 6. Troubleshooting Flow Chart Defect Mode Failure Analysis Light On Test Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair Flash Dots Abnormal Display Bright Dot Dark Dot Backlight Light Leakage Mura Check Panel Panel Change Image Sticking Brightness spot Particle Dot Defect Image Remain Group Bright Dots Others Cosmetics Defect Next Step NG A ViewSonic Corporation TEST Completed 32 Confidential - Do Not Copy VE1920wmb-2 Defect Mode Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair A Display Noise Power on Check PCBA Display AD/B Change Power/B Change Abnormal Inverter/B Change Flicker CNT/B Change Beat Display Flicker Check Panel Panel Change Beat Display Shut Down Display Wave AD/B Change Check PCBA Power/B Change CNT/B Change No Backlight Check Panel Panel Change Check Adapter Adapter Change Next Step NG B ViewSonic Corporation TEST Completed 33 Confidential - Do Not Copy VE1920wmb-2 Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair B Display White Out Check PCBA AD/B Change Power/B Change Booting Delay Check PCBA Brightness OSD/B Change Even Abnormal Check PCBA Power/B Change Inverter/B Change Beat Display No Backlight Inverter/B Change Check Panel Check Adapter Panel Change Adapter Change No signal AD/B Change R.G.B Check PCBA CNT/B Change Check Wire VGA cable Display Abnormal DVI cable Gray Scale Display Abnormal Check Panel Next Step Panel Change NG TEST C Completed ViewSonic Corporation 34 Confidential - Do Not Copy VE1920wmb-2 Defect Mode Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair C Horizontal Line Defect Vertical Weak Line Check PCBA AD/B Change Check Panel Panel Change Horizontal Weak Line Vertical Band Defect Horizontal Band Defect Power Saving Display Abnormal Check PCBA AD/B Change AD/B Change Peculiar Smell Check PCBA Power/B Change Inverter/B Change Next Step NG TEST Complete ViewSonic Corporation 35 Confidential - Do Not Copy VE1920wmb-2 Defect Mode Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair AD/B Change Power/B Change Power ON/OFF No Power Abnormal Turn Off Check PCBA Check PCBA CNT/B Change Inverter/B OSD/B Change Abnormal Check Wire OSD Cable Check Wire AC Power Change DC Power CNT Cable Change Check Adapter Adapter Change AD/B Change LED Display Abnormal LED Off Check PCBA Power/B Change Inverter/B LED Dark OSD/B Change LED Abnormal LED Loss OSD Cable Check Wire DC Power CNT Cable Change LED Flicker Adapter Change Next Step NG TEST Completed ViewSonic Corporation 36 Confidential - Do Not Copy VE1920wmb-2 Defect Mode Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair Abnormal BIOS &OSD OSD Key AD/B Change Unavailable CNT/B Change OSD Can’t Input Power/B Change Check PCB Inverter/B OSD Can’t Read OSD/B Change OSD No D-sub cable Display OSD cable Check Wire OSD Jiggle OSD Display Abnormal Abnormal Loudspeaker VGA cable DVI cable Check BIOS BIOS Update AD/B Change Voice Loss CNT/B Change Abnormal Loud Power/B Change Check PCBA Inverter/B Change L/R Abnormal OSD/B Change Check Wire No Voice L/R Same OSD Cable Change Check Loudspeaker Volume Loudspeaker Noise Next Step Loudspeaker Change NG TEST Completed ViewSonic Corporation 37 Confidential - Do Not Copy VE1920wmb-2 Defect Mode Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair Other Abnormal Display Shut Display Check PCBA Down AD/B Change Power/B Change CNT/B Change Check Panel Display Flicker Check PCBA ((tapping ) Check PCB Display Abnormal TV Function Display Abnormal AD/B Change CNT/B Change Check Panel DVI Signal Panel Change Check EDID Code Check PCBA Check Wire Check Controller Panel Change AD/B Change EDID Update TV /B Change AV Cable Change Remote controller Change Next Step NG TEST Complete ViewSonic Corporation 38 Confidential - Do Not Copy VE1920wmb-2 Trouble Shooting Analysis Check the information in this section to see if the problems can be solved before requesting repair. Note:The consumers are only allowed to solve the problems described as below. Any unauthorized product modification, or failure to follow instructions supplied with the product will end the warranty immediately. z No image z No Signal Input z z z Reset the LCD monitor Take off extra accessories (such as signal extension cord). Use OSD Image Menu to adjust H_Position and V_Position. Check image size setting. Perform Auto Adjust. Image is not centered Size is not appropriate Use OSD Color Menu to adjust color setting. Dark area distorted z Use OSD Color Menu to adjust color setting. Color too dark z Use OSD Image Menu to adjust H_Position and V_Position. Check image size setting. Perform Auto Adjust. Uneven color z Check the signal connection between the computer and LCD monitor. Perform Auto Adjust. Distorted image z Adjust brightness and contrast by OSD. Irregular image z Adjust brightness and contrast by OSD. Image too dark z Adjust Phase. Image too bright z Check the computer image output resolution and frequency and compare the value with the preset values (Please refer to [Appendix-Display Mode]). Fuzzy Image z Check the signal connection between the computer and LCD monitor. “Out of Range” z Make sure power button is ON. Check whether the LCD monitor and computer power cords are plugged and whether there is a supply of power. Use OSD Color Menu to adjust color setting. White color is not white Use OSD Color Menu to adjust color setting. ViewSonic Corporation 39 Confidential - Do Not Copy VE1920wmb-2 7. Recommended Spare Parts List RECOMMENDED SPARE PARTS LIST (VE1920wmb-2) ViewSonic Model Number: VS10866 Serial No. Prefix: QCB Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Accessories: PC Board Assembly: Cabinets: Cables: Documentation: Hardware: Miscellaneous: Packing Material: Plastics: Description Power Cord Audio Board (Rev.02) Audio Control Board (Rev.04) Power Supply Board (Ver:0F)Lips with Audio Cover Hinge Seat Assy Black Front Panel (Bazel) Back Cover Base Assembly Audio Cable, A150X2,18AWG, 180cm DVI Cable, S/L, 1.8M, W/2F Accessory Cable, D-Sub Flat Cable (FFC L=108.5) Flat Cable (FFCX816,36) Safety Label, 120 mmx50 mm Carton Label 76.2 mmx76.2 mm CD-ROM (Menu) SCREW,3,P=0.5 mm,L=4 mm SCREW,3,P=0.5 mm,L=4 mm SCREW,M3,P=1.27 mm,L=12 mm SCREW,M4,P=0.7 mm,L=8 mm SCREW,M4,P=0.7 mm,L=15 mm SCREW,4,P=0 mm,L=11.8 mm Tape, 900 mmx50 mmx0 mm PE Bag Foam(Right) Foam(Left) Generic Foam Set Generic Box Craft Box Panel Cover (Panel Protector Film) Rev: 1a ECR/ECN ViewSonic P/N A-00002058 B-00005600 B-00005705 B-00008008 C-00004284 C-00005847 C-00006042 C-00006043 C-00006044 CB-00000544 CB-00002083 CB-00004287 CB-00004288 CB-00005742 DC-00006045 DC-00008035 DC-00008036 HW-00000553 HW-00000553 HW-00000556 HW-00004042 HW-00005884 HW-00006041 M-00000560 P-00000595 P-00006049 P-00006050 P-00001347 P-00002515 P-00008028 PL-00006048 Ref. P/N 32E1818013 35-D005166 35-D005062 27-D007836 40-D004250 40-D008680 40-D010962 40-D008950 40-D008951 32F2818004 32F0000004 32F3018003 32-D004533 32-D005773 77-D010603 77-D011986 76-D011994 42A9930008 42A9930008 42A9990005 42-D000649 42-D001756 42A9940007 7345511002 7841919921 78-D009100 78-D009098 30833 20653 78-D011984 73-D005900 Location Universal number# Q'ty 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 16 4 2 1 4 4 0.058 1 1 1 1 1 Remark 1: Above listed items are examples, supplier can expand the rows to add more necessary items. Remark 2: All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR approved by ViewSonic Corporation. This is to eliminate repeated cross checks of each item between this version and prior versions. ViewSonic Corporation 40 Confidential - Do Not Copy VE1920wmb-2 BOM LIST (VE1920wmb-2) ViewSonic Model Number: VS10866 Rev: 1a Serial No. Prefix: QCB Item ViewSonic P/N 1 HW-00000553 2 HW-00006041 3 N/A 4 5 6 HW-00004042 B-00005705 CB-00005742 7 N/A 8 N/A 9 10 B-00008008 N/A 11 12 13 N/A N/A N/A 14 N/A 15 N/A 16 17 18 N/A N/A N/A 19 20 N/A N/A 21 22 23 24 25 26 HW-00000553 HW-00000556 CB-00004288 B-00005600 C-00006043 C-00006042 27 28 29 HW-00005884 C-00004284 C-00006044 30 31 32 33 N/A PL-00006048 DC-00006045 HW-00002076 34 N/A 35 36 37 38 39 P-00000595 DC-00000586 M-00000560 N/A N/A 40 41 N/A C-00005847 42 43 44 P-00006049 N/A P-00006050 45 N/A 46 N/A 47 DC-00008035 48 P-00008028 49 DC-00008036 50 N/A 51 N/A 52 53 54 N/A CB-00000544 CB-00002083 55 56 A-00002058 CB-00004287 Ref. P/N Description Location SCREW, 3, P=0.5 mm, L=4 mm, Pan Head, Phillips Cross Recess, Hama Naka Motogawa/Shin Yee/Hama Naka Shoukin/Shiho/Shye Ching, Green I SCREW, 4, P=0 mm, L=11.8 mm, Hexagon Stand Off, Socket, Hama Naka Motogawa/Shiho/Shin 42A9940007 Yee/Shye Ching, Green I Metal Frame Front, M190A1-L01/A190A2/M190A1-L03, SECC 0.6t, Kunshan Jincheng_Base 41-D000643 Assy/Wai Gin/Jiin Ming, 19"wide, Green I SCREW, M4, P=0.7 mm, L=8 mm, Round Head, Phillips Cross Recess, plate color Zn, 42-D000649 Screw with Washer, Shye Ching/Hama Naka Motogawa, head D8, Green I 35-D005062 PCBA for , A190A2-A02-H, A190A2-A02-H-S1, 1206-03, Rev.04, USI/ITC, ODM, Green II 32-D005773 FFC, FFCX816, 36 Pins, Tennsure, package AL_Foil, Green I Cover AD Assy, A190A2, SECC, Jiin Ming/Kunshan Jincheng_Base Assy, Left_Side 4 connector, 41-D007621 Green II Backlight Unit, a190a2, CLT_BL/Kenmos/Forhouse, 44-D007620 Hign&Low Voltage into the same connector, Green II Lips With Audio, DAC-19M008 AF, 0F, 5 V/3 A, 13.8 V0.7 A, I TYPE, 7 mA, 1710 V, Delta 27-D007836 Dongguan LIPS, Green II 36X8636401 Driver IC, COG, Scan, HX8636APD400(TSMC), 300Channel, Himax, Green I ACF, COG, AC-8405Z-23 1.5mmX100M, 100000 mmx1.5 mm, Hitachi Chemical, COG-ACF, 73-C000047 Green I L3J009XXX8 19" wide PS TN Asahi 0.7mm glass Resin BM (Panel Base) L3J009X4BI 19" wide PS TN Asahi 0.7mm glass Resin BM+5ms LC (Sheet Base) Polarizer, CF, Degree 135, 415.84 mmx262.15 mmx0.215 mm, LPT-HL56T-12AGA1SU, M190A1, 74-D000461 Optimax, Green I Polarizer, TFT, Degree 135, 414 mmx259.7 mmx0.215 mm, LPT-HL56T-12SU, M190A1, Optimax, 74-D000462 Green I Driver IC, COF, Data, A190A2-A02-H, HX8018-A060CBAK, 6 bit, 432Channel, Himax, Green II 36-D007589 42A9930008 73-D008216 73-D002676 35-D007815 7349951002 42A9930008 42A9990005 32-D004533 35-D005166 40-D008950 40-D010962 42-D001756 40-D004250 40-D008951 77-D001323 73-D005900 77-D010603 7841595111 7841996911 7841919921 7741999141 7345511002 77-D000114 77-D000118 78-D000801 40-D008680 78-D009100 79-D009099 78-D009098 78-D010933 77-D011988 77-D011986 78-D011984 76-D011994 10-D011883 10-D012406 10-D012434 32F2818004 32F0000004 32E1818013 32F3018003 Universal number# Q'ty 16 4 1 1 1 2 1 1 1 3 0.00168 1 0.08333 1 1 10 ACF, COF, AC-4255U-16, 200000 mmx1.2 mm, Hitachi Chemical, Green II ACF, PCB, AC-9825R-35, 100000 mmx1.5 mm, Hitachi Chemical, PCB-ACF, Green I PCBA for , A190A2-A02-H, A190A2-A02-H-X, 1206-05, Rev.02, ITC/USI/WUS_PCBA, ODM, Green II Silicone, TORAY/-9187L, 330g SCREW, 3, P=0.5 mm, L=4 mm, Pan Head, Phillips Cross Recess, Hama Naka Motogawa/Shin Yee/Hama Naka Shoukin/Shiho/Shye Ching, Green I SCREW, M3, P=1.27 mm, L=12 mm, Pan Head, Phillips Cross Recess, Green I FFC, A190A2-H05, 15 Pins, Tennsure/Young Shin, L=108.5, Green I PCBA for , A190A2-H, A190A2-H-K3, 106-02, Rev.02, USI/ITC, ODM, Green II Rear Assy, A190A2-H0C, ASSY, Black, Fuking, Green II Bezel Assy, A190A2-H0C, ABS PA-757-J01, BLACK, Fuking, Dual, VSC, 1st, Green II SCREW, M4, P=0.7 mm, L=15 mm, Round Head, Phillips Cross Recess, Zn(Black), Screw with Washer, Hama Naka Motogawa/Shye Ching, Green I Cover Hinge, A190A2-H05, ABS PA757N, Black(J91A11B5), Fuking, Green I Stand Assy, A190A2-H0C, ASSY, Black, Cherng Jyieh, Green II Customer Label for , A170E1-H0G, 15 mmx15 mm, Chang Huang, QC Pass Label_VSC_for China, Green I Panel Protector Film, A190A2-H05, XG-536 T=0.1, With_Print, Just Enter, Green II Safety Label for , A190A2-H0C, 120 mmx50 mm, Chang Huang, VSC_VE1920wmb, Green II Corner Protector, paper, 50 mmx50 mmx1850 mm, Green II Separator, (AA), A190E2-H04, 1200 mmx1050 mmx11 mm, Shanghai Zhung Hao/Hua Sun Paper, ACER, Non Green Bag, 570 mmx600 mmx0.13 mm, Huang Jyii/Taiwan Hon Chuan/Suzhuo Hon Chuan, Default, Green I Module Label, A190E2-H03, 75 mm, 40 mm, Non Green Tape, A170E1-H0P, 900 mmx50 mmx0 mm, Symbio, OPP Customer Label for , A170E1-H0G, 180 mmx100 mm, Chang Huang, VSC_on Carton, Green I Customer Label, A170E1-H0G, 130 mm, 80 mm, Green I Pallet, N150X6, Wooden, KD-HT, 1200 mmx1000 mmx135 mm, Shanghai Hang Wei/Ming Li/Hua Sun Paper, Green I Seat Assy, A170E1-H0P, ASSY, Black, Cherng Jyieh, Green II Cushion, A190A2-H0C, EPS, White, 464 mmx180 mmx220 mm, Telung, PS_Foam(Right), Green II 0.0022 0.0044 Shipping Package Information for , A190A2-H0C, Viewsonic Cushion, A190A2-H0C, EPS, White, 464 mmx180 mmx220 mm, Telung, PS_Foam(Left), Green II 1 Warranty Card, A170E1-H0G, 143 mmx210 mm, Yi Ching/Car Tong Kunshan, VSC_VA712 Ver.2, Green II SN Label for , A190A2-H0C, 50 mmx25 mm, Chang Huang/Kunshan Hwakuan, VSC VE1920wmb-2 for China, Green II Carton Label for , A190A2-H0C, 76.2 mmx76.2 mm, Chang Huang/Kunshan Hwakuan, VSC VA1920wmb-2, Green II Carton, A190A2-H0C, 492 mmx186 mmx478 mm, Chen Yi Paper, VSC_VE1920wmb-2 5ms, Green II MENU for A190A2-H0C, Complex, 1C, Yi Ching/Car Tong Kunshan, VSC_VE1920wmb-2 CDROM, Green II Software (BIOS), A190A2, 19A2LS1000, VSC, Checksum(0x8A47), VSC 19W TSUM, DUAL+AUDIO/Analog+Audio for 5ms Panel, Green II Software (EDID_D-SUB), A190A2, VSC501EAb0, VSC, Checksum(XX), VSC 19W Analog Port, Green II Software (EDID_DVI), A190A2, VSC501EDb0, VSC, Checksum(XX), VSC 19W Digital Port, Green II Accessory Cable, Audio, NONE, Black, Pins-Pins, Green I Accessory Cable, DVI, Black, Jceprocable, DVI-D(M) TO DVI-D(M), S/L, W/2F, Green I Power Cord, CCC, 300/500V, 0.75mm2, 3C, PC-323+COC-01, L=1830+/-50mm, Black, Linetek, 18AWG, No Bag, Green I Accessory Cable, D-Sub, BLACK, Jceprocable, A150X2, Green I ViewSonic Corporation 1 0.4 4 2 1 1 1 1 4 1 1 1 1 1 0.083 0.021 1 0.021 0.058 1 1 0.021 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 41 Confidential - Do Not Copy VE1920wmb-2 8. Exploded Diagram and Exploded Parts List EXPLODED PARTS LIST (VE1920wmb-2) ViewSonic Model Number: VS10866 Rev: 1a Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ViewSonic P/N N/A E-00005747 N/A HW-00000553 B-00006039 B-00005705 HW-00000553 N/A C-00006042 C-00006043 HW-00004042 C-00006044 C-00004284 C-00005847 Reference P/N 44-D003904 MJ0A10AK01 41-D004053 42A9930008 27-D003247 35-D005062 42A9930008 41-D002610 40-D010962 40-D008950 42-D000649 40-D008951 40-D004250 40-D008680 Description BACKLIGHT ASSY PANEL ASSY BACKLIGHT FRONT COVER SCREW M3*4L POWER PCB ASSY AD PCB ASSY SCREW M3*4L AD COVER BEZEL ASSY REAR ASSY SCREW D3*8L STAND ASSY COVER HINGE SEAT ASSY Q'ty 1 1 1 2 1 1 7 1 1 1 4 1 1 1 ViewSonic Corporation Model Title Date ViewSonic Corporation 42 Confidential - Do Not Copy VE1920wmb-2 Exploded chart Rev: PACKING PART LIST ( VE1920wmb-2 ) ViewSonic Model Number: VS10866 Rev: 1a Item 1 2 3 4 5 6 7 8 9 10 11 12 ViewSonic P/N N/A P-00000595 P-00006049 P-00006050 N/A N/A CB-00004287 CB-00000544 N/A N/A N/A N/A Ref. P/N VE1920wmb 7841919921 78-D009100 78-D009098 Different region (refer to BOM) Different region (refer to BOM) 32F3018003 32F2818004 N/A Different region (refer to BOM) Different region (refer to BOM) Different region (refer to BOM) Location LCD Monitor PE Foam Bag PS Foam (Right) PS Foam (Left) Carton Power Cord Monitor Cable Audio Cable DVI Cable Menu (Quick Setup) Menu (CD-ROM) Warranty Registration Card Q'ty 1 1 1 1 1 1 1 1 1 1 1 1 ViewSonic Corporation Model Title Date ViewSonic Corporation 43 Confidential - Do Not Copy VE1920wmb-2 Packing Exploded chart Rev: 9. Block Diagram Speaker OSD Key Pad / Audio Out 3.3V 5V DVI-D Digital Video Main Board 12V D-sub Analog Video Signal LDO DC-5V AC Power LCD Module DC-12V LIPS Backlight Audio In ViewSonic Corporation 44 Confidential - Do Not Copy VE1920wmb-2 10. Schematic Diagrams B3 B6 DSUB_DET SOG DDCA_DAT DDCA_CLK RIN GNDR GIN GNDG BIN GNDB HSYNC VSYNC DSUB_DET SOG VGADDCA_DAT V5A DDCA_CLK RIN VGA_5V GNDR GIN GNDG BIN GNDB V5A_ESD HSYNC VSYNC VGA_5V V5A_ESD BR2N BR2P BR1N BR1P BR0N BR0P DSUB_DET SOG DDCA_DAT DDCA_CLK RIN GNDR GIN GNDG BIN GNDB HSYNC VSYNC BG2N BG2P BG1N BG1P BG0N BG0P B4 DDCD_CLK DDCD_DAT R+ RG+ GB+ BCLK+ CLK- V5A_ESD DDCD_CLK DDCD_DAT V5A R+ RDVI G+ GDVI_5V B+ BCLK+ CLK- DVI_5V B1 BB2N BB2P BB1N BB1P BB0N BB0P DDCD_CLK DDCD_DAT R+ RG+ GB+ BCLK+ CLK- FR2N FR2P FR1N FR1P FR0N FR0P FG2N FG2P FG1N FG1P FG0N FG0P OSD LED_OR LED_GL TURBO MENU LEFT RIGHT AUTO POWER LED_OR LED_GL TURBO MENU LEFT RIGHT AUTO POWER V33C AUDIORAUDIOR+ AUDIOLAUDIOL+ LED_OR LED_GL TURBO MENU LEFT RIGHT AUTO POWER AUDIO_ON INV_ON/OFF DCDC_ON/OFF PANEL_ON/OFF VCM_PWM VOL_ADJ INV_ADJ AUD_DET AUDIORAUDIOR+ AUDIOLAUDIOL+ AUDIO_ON INV_ON/OFF DCDC_ON/OFF PANEL_ON/OFF VCM_PWM VOL_ADJ INV_ADJ AUD_DET DVI_5V SCALER FB2N FB2P FB1N FB1P FB0N FB0P FCKN FCKP FSTH BCKN BCKP BSTH STB POL CPV STV OE B8 BR2N BR2P BR1N BR1P BR0N BR0P PANEL_INTERFACE BR2N BR2P BR1N BR1P BR0N BR0P BG2N BG2P BG1N BG1P BG0N BG0P BG2N BG2P BG1N BG1P BG0N BG0P BB2N BB2P BB1N BB1P BB0N BB0P BB2N BB2P BB1N BB1P BB0N BB0P FR2N FR2P FR1N FR1P FR0N FR0P FR2N FR2P FR1N FR1P FR0N FR0P FG2N FG2P FG1N FG1P FG0N FG0P FG2N FG2P FG1N FG1P FG0N FG0P FB2N FB2P FB1N FB1P FB0N FB0P FB2N FB2P FB1N FB1P FB0N FB0P FCKN FCKP FSTH FCKN FCKP FSTH BCKN BCKP BSTH BCKN BCKP BSTH STB POL STB POL CPV STV OE CPV STV OE B5 VCTRL B2 V5A INVERTER I/F AUDIOL- DVI_5V AUDIOR+ Vref Vref VGA_5V AUDIOR- VOL_ADJ V12A V5A AUDIOL+ V12A V18C V33C Vref V5A GVOFF GVOFF GVOFF VCM_PWM PANEL_ON/OFF DCDC_ON/OFF V12A VOL_ADJ POWER AUDIO_ON LED_GL V18C AUD_DET V33C AUD_DET VCTRL V33P V33P V33P V5A VCM_PWM PANEL_ON/OFF DCDC_ON/OFF V12A V33P V5A V33C V18C V5A V33C V12A INV_ON/OFF INV_ADJ V12A INV_ON/OFF INV_ADJ ViewSonic Corporation Model Title Date ViewSonic Corporation 45 Confidential - Do Not Copy VE1920wmb-2 SYSTEM DIAGRAM Rev: VCC33 VDPP L10 VDDC 12 97 117 68 WP WP 0603/100n/25V/7 C80 1206/10u/16V/X/PbF TSUM57AK U2 C90 8 7 3 4 GND VDD HOLD# WP# VSS SDO CE# SCK SDI 2 1 6 5 70 71 72 73 R116 0603/10K/5% 32 C94 0603/22p/50V/N Y1 14.31818MHz C93 0603/22p/50V/N 33 GND 98 99 100 101 105 106 FG0N FG0P FG1N FG1P FG2N FG2P BA1P/NC/BA2 BA1N/NC/BA3 BA2P/NC/BA4 BA2N/NC/BA5 BA3P/NC/BA6 BA3N/NC/BA7 89 90 91 92 93 94 FR0N FR0P FR1N FR1P FR2N FR2P RB1P/NC/RB2 RB1N/NC/RB3 RB2P/NC/RB4 RB2N/NC/RB5 RB3P/NC/RB6 RB3N/NC/RB7 9 10 15 16 17 18 BB0N BB0P BB1N BB1P BB2N BB2P GB1P/NC/GB2 GB1N/NC/GB3 GB2P/NC/GB4 GB2N/NC/GB5 GB3P/NC/GB6 GB3N/NC/GB7 2 3 5 6 7 8 BG0N BG0P BG1N BG1P BG2N BG2P 118 119 120 121 122 123 124 125 126 127 128 1 FCKP FCKN BCKP BCKN CLKAP/LVB3P/LHSYNC CLKAN/LVB3M/LVSYNC CLKBP/LVBCKP/LCK_ODD CLKBN/LVBCKM/LDE NC/LVB2P/NC NC/LVB2M/NC BB1P/LVB1P/BB2 BB1N/LVB1M/BB3 BB2P/LVB0P/BB4 BB2N/LVB0M/BB5 BB3P/NC/BB6 BB3N/NC/BB7 SDO SCZ SCK SDI Pm25LV512 19 GA1P/NC/GA2 GA1N/NC/GA3 GA2P/NC/GA4 GA2N/NC/GA5 GA3P/LVA3P/GA6 GA3N/LVA3M/GA7 REFP REFM RST ESP OSP GPO0 GPO1 GPO2 GPO3 GPO4 GPO5 GPO6 XIN XOUT GND GPIO_P22 GPIO_P23 GPIO_P03 VCC33 R0603/OPEN R0603/OPEN 102 104 GPIO_P16/PWM2 GPIO_P15/PWM0 PWM2/GPIO_P24 GPIO_P27/PWM1 MODE[0] MODE[1] GPIO_P12 PWM1/GPIO_P25 R114 0603/10K/5% R115 0603/10K/5% R118 R119 RSTN GPIO_P00/SAR1 GPIO_P01/SAR2 GPIO_P02/SAR3 GPIO_P06 GPIO_P07 PWM0/GPIO_P26 GPIO_P13 GPIO_P14 GND C58 0603/100n/25V/7 C59 0603/100n/25V/7 C60 0603/100n/25V/7 FB0N FB0P FB1N FB1P FB2N FB2P FB0N FB0P FB1N FB1P FB2N FB2P 1 POL R103 R104 20 21 INV_ON/OFF INV_ADJ 22 23 24 25 27 28 29 30 31 SAR1 R110 SAR2 R117 R121 1 TP C75 0603/100n/25V/7 Close to respective power Pins VPLL L13 VPLL1 1 2 1 VDDC TP VCC18 VDDC1 L17 C76 1206/10u/16V/X/PbF 1 V18C C77 0603/100n/25V/7 2 1 C84 1206/4.7u/16V/Y Close to respective power Pins GND 1 C78 1206/10u/16V/X/PbF C86 0603/100n/25V/7 C87 0603/100n/25V/7 GND TP C79 0603/100n/25V/7 V12A V5A GND GND R120 MENU LEFT RIGHT Close to respective power Pins V5A DVI 0603/0R/5%/open R214 0603/10K/5% DVI_5V C88 0603/100n/25V/7 DSUB LED_GL LED_OR VOL_ADJ 0603/100R/5% 1 VCC33 AUD_DET AUTO POWER GND 0603/100R/5% 0603/100R/5% 0603/100R/5% AVDD1 2 C85 0603/100n/25V/7 TP Close to respective power Pins AVDD L14 LED_GL LED_OR R105 VMPLL1 HCB2012KF-420T40 2 GND BSTH VCC33 VCC33 FSTH GVOFF STB STV CPV OE VCM_PWM PANEL_ON/OFF C67 0603/100n/25V/7 Close to respective power Pins C74 1206/10u/16V/X/PbF BR0N BR0P BR1N BR1P BR2N BR2P 0603/100R/5% 0603/100R/5% TP VMPLL L12 1 FCKP FCKN BCKP BCKN POL AUDIO_ON C66 0603/100n/25V/7 GND BG0N BG0P BG1N BG1P BG2N BG2P 75 74 26 1 C65 1206/10u/16V/X/PbF BB0N BB0P BB1N BB1P BB2N BB2P TP VDVI1 2 TP FR0N FR0P FR1N FR1P FR2N FR2P BSTH FSTH GVOFF STB STV CPV GPO51 OE VDVI L11 1 FG0N FG0P FG1N FG1P FG2N FG2P BR0N BR0P BR1N BR1P BR2N BR2P 80 81 88 87 86 85 84 83 82 35 69 78 79 Close to respective power Pins R112 V5A 61 C57 0603/100n/25V/7 TP GND 0603/10K/5%/OPEN 62 C91 0603/100n/25V/7 C56 0603/100n/25V/7 VCTRL 107 108 109 110 111 112 113 114 R210 VCC33 11 0603/30K/5% VDDC VDDC VDDC VDD_OTP 60 14 67 95 103 115 VDDP VDDP VDDP VDDP VDDP 52 AVDD_PLL REXT VCTRL NC/LVACKP/NC NC/LVACKM/NC RA1P/LVA2P/RA2 RA1N/LVA2M/RA3 RA2P/LVA1P/RA4 RA2N/LVA1M/RA5 RA3P/LVA0P/RA6 RA3N/LVA0M/RA7 R113 0603/10K/5% R124 0603/390R/1% 51 AVDD 1 GND R209 DDCD_DAT DDCD_CLK RX2P RX2N RX1P RX1N RX0P RX0N RXCKP RXCKN DDCD_SDA DDCD_SCL 2 C55 1206/10u/16V/X/PbF OPEN/R0603 R+ 39 R40 G+ 42 G43 B+ 45 B46 CLK+ 48 CLK- 49 DDCD_DAT 36 DDCD_CLK 37 R+ RG+ GB+ BCLK+ CLK- RIN0P RIN0N GIN0P GIN0N SOGIN0 BIN0P BIN0N HSYNC0 VSYNC0 DDCA_SDA/RS232_Tx DDCA_SCL/RS232_Rx C92 0603/100n/25V/7 R122 0603/10K/5%/open DDCA_DAT DDCA_CLK 59 58 56 55 57 54 53 63 64 65 66 AVDD_ADC RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC AVDD_MPLL AVDD_MPLL RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC DDCA_DAT DDCA_CLK GND AVDD_DVI AVDD_DVI U1 4 34 44 50 0603/100n/25V/7 VDPP1 1 V33C DSUB AVDD VDPP R111 0603/10K/5% VMPLL VPLL C68 0603/20K/1%/OPEN R79 DVI VDVI 0603/0R/5%/open R213 GND DSUB_DET VCC33 TURBO GND 7 WP A1 SCL A2 SDA GND R102 1 0603/4.7K/0.1%/RoHS 2 Q7 MMBT3904-F DCDC_ON/OFF C89 0603/100n/25V/7 2 need to modify, the SAR is 6 bits and the max voltage is 1.8V DCDC_ON/OFF 3 13 38 41 47 96 116 R1000603/100R/5% R101 0603/100R/5% C81 0603/100n/25V/7 U7 AT24C16AN-10SU-2.7/RoHS 8 VCC A0 1 R109 0603/10K/5% 77 76 R106 0603/10K/5% R107 0603/10K/5% GND GND GND GND GND GND DDCROM_SCL DDCROM_SDA R108 0603/10K/5% VCC33 6 5 3 4 GND GND U5 VCC33 PIN VOLTAGE VCC33 4 RIGHT 1.77V NC C152 C150 0.47V GND SAR1 R128 0603/23.2K/1%/OPEN LEFT 1.77V TP SAR11 MENU 1.24V R200 0603/10M/5%/RoHS/OPEN TURBO R127 0603/20K/1%/OPEN 5 0805/10u/6.3V/5/open GND SAR2 LEFT 1 AUTO 1 1.24V SAR21 0.47V R67 0603/12.1K/1%/OPEN MENU R137 0603/20K/1%/OPEN C70 0603/10n/25V/7/RoHS R138 0603/23.2K/1%/OPEN CD 3 2 OUT 1 GND Vref VCC33 RN5VD40AA/RoHS R212 0603/1K/5% RIGHT GND TP 0805/10u/6.3V/5/open POWER VSS VDD R201 0603/10M/5%/RoHS/OPEN R134 TURBO 0603/3.3K/1%/OPEN R139 POWER 0603/12.1K/1%/OPEN R140 AUTO 0603/3.3K/1%/OPEN WP ViewSonic Corporation GND RIGHT +LEFT +POWER SR1(1.77) SR2(0.93) GND Model Title Date ViewSonic Corporation 46 Confidential - Do Not Copy VE1920wmb-2 SCALER Rev: 0603/1K/5%/RoHS V33C R12 V33C V33C R9 V5A 0603/10K/5%/RoHS 3 1 2 1 0603/4.7K/5%/RoHS R14 TP TP LP2 FBMJ2125HS420/PbF LP3 FBMJ2125HS420/PbF LP4 FBMJ2125HS420/PbF INV_ON/OFF1 INV_ADJ 0603/4.7K/5%/RoHS 3 Q1 2N7002/RoHS 0603/1u/10V/Y/open V5A1 VIN_12V1 VIN_12V R13 C7 1 C8 0603/0.1u/25V/open Q2 2N7002/RoHS R10 1 2 GND INV_ON/OFF 1 TP INV_ADJ INV_ON/OFF 1 GND [GND_INV] INV_ADJ1 0603/4.7K/5%/RoHS TP R11 0603/10K/5%/OPEN V5A LP1 GND V5A FBMJ2125HS420/PbF CP3 CP1 1206/10u/16V/5/RoHS UWT1E101MCL1GS/RoHS 1210/4.7u/25V/5/RoHS GND R181 0603/10K/5%/RoHS VOL MUTE AUDIORAUDIOR+ AUDIOLAUDIOL+ CN4 Header2X8FR2.54 0603/0R/5%/RoHS/OPEN AUD_Shutdown R22 R182 MUTE LP5 FBMJ2125HS420/PbF 2 1 3216FF/1206/3A/RoHS TP0610K/PbF V12A 1 V12A Q16 LV470M025E055R CP4 3 FP1 2 VIN_12V Q18 2N7002/RoHS 3 AUD_DET 1 GND 2 GND GND_INV AUD_DET V5A 0603/10K/5%/RoHS 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 1 LED_GL 2 CP2 + CP5 CP6 1210/4.7u/25V/5/RoHS 1210/4.7u/25V/5/RoHS C161 0603/100n/25V/Y/RoHS R183 0603/1K/5%/RoHS GND GND GND GND AUD_Shutdown V5A R19 0603/1K/5%/RoHS 1 1 C4 TP0610K/PbF Q3 3 R18 Q5 1 2N7002/RoHS 2 VOL_ADJ 0603/10K/5%/RoHS R17 OPEN/0603 VOL C6 1206/10u/16V/5/RoHS 1 Q4 2N7002/RoHS 3 OPEN/0603 3 R15 0603/10K/5%/RoHS VOL1 2 VOL_ADJ1 V5A Low: MUTE OFF 1 AUDIO_ON 2 V5A C3 0603/100n/25V/Y/RoHS C5 0603/100n/25V/7/RoHS R16 0603/1K/5%/RoHS GND GND GND MUTE R20 GND 0603/0R/5%/RoHS/OPEN ViewSonic Corporation Model Title Date ViewSonic Corporation 47 Confidential - Do Not Copy VE1920wmb-2 INVERTER INTERFACE Rev: V18C D7 BAV70W/open V18C Q8 3 V33C1 B GND 4 E C 2 1 1 C160 0805/4.7u/16V/Y H2907AS R203 0603/2K/1% 2 TP C42 1206/22u/16V/Y/RoHS Vref 1 B240A-F LM1117MPX-3.3/RoHS 2 4 V33C VOUT VOUT C44 C43 0603/100n/25V/7/RoHS 1206/22u/16V/Y/RoHS V18V1 D35 1N4148WS-F V33C (SCALER VCC) GND 1 VIN 1 U4 3 GND L18 V5A FBMJ2125HS420/PbF D9 1 2 TP 3 2 0603/0R/5%/open DVI_5V VGA_5V 1 0603/0R/5%/open R1 R5 VCTRL R202 0603/51R/1% R204 C45 0603/100n/25V/7/RoHS 0603/100R/1% Heat-Sink GND (POWER FOR SCALER) L9 U6 FBMJ2125HS420/PbF 3 VIN LM1117MPX-3.3/RoHS 2 4 V33P VOUT VOUT V33P (Panel VCC) 1 GND V5A 1 TP V33P1 C50 1206/22u/16V/Y/RoHS C51 0603/100n/25V/7/RoHS C52 1206/22u/16V/Y/RoHS C53 0603/100n/25V/7/RoHS GND ViewSonic Corporation Model Title Date ViewSonic Corporation 48 Confidential - Do Not Copy VE1920wmb-2 POWER Rev: R35 DDCA_DAT 0603/0R/5%/OPEN 11 1 6 2 7 3 8 4 9 5 10 12 13 14 15 R78 R30 R29 0603/75R/1% 0603/75R/1% 0603/75R/1% R21 0603/56R/1% C9 0603/47n/16V/7/RoHS R34 0603/56R/1% C10 0603/47n/16V/7/RoHS R23 0603/56R/1% C11 0603/47n/16V/7/RoHS R24 0603/470R/1% C15 0603/1n/16V/7 RIN GIN BIN SOG CN7 89263-6762 R25 D1 1 R144 0603/0R/5%/OPEN D2 D24 1 BAV99W/RoHS 1 D25 BAV99W/RoHS C157 0603/100n/25V/X/RoHS DDCA_CLK L20 2 HSI GND 2 C159 0603/100n/25V/X/RoHS 0603/0R/5%/RoHS R57 R55 C124 0603/47n/16V/7/RoHS R27 0603/100R/1% C125 0603/47n/16V/7/RoHS GNDR GNDG GNDB 0603/1K/1%/RoHS HSYNC C128 C126 0603/33p/50V/N/RoHS 0603/33p/50V/N/RoHS/open 0603/2.2K/5%/RoHS 1 0603/100R/1% V5A_ESD C158 0603/100n/25V/X/RoHS D32 UDZSF-5.6B/PbF R26 GND V5A_ESD 2 GND 0603/47n/16V/7/RoHS D5 BAV99W/RoHS 2 0603/10p/varistor/OPEN 0603/10p/varistor/OPEN C123 3 3 3 GND 0603/100R/1% GND 0603/0R/5%/RoHS D33 UDZSF-5.6B/PbF GND R129 1 0603/2.2K/5%/RoHS GND GND R64 0603/100R/5%/RoHS R131 0603/100R/5%/RoHS R54 GND 0603/1K/1%/RoHS VSYNC C127 0603/33p/50V/N/RoHS/open C100 R66 2 VSI 0603/220p/50V/N GNDGND GND HSYNC1 TP 1 HSYNC VSYNC1 TP 1 VSYNC DDCA_CLK DDCA_DAT DSUB_DET D6 C129 0603/100n/25V/X/RoHS D30 BZT52-C5V6S/RoHS 3 0603220KV05T/RoHS V5A D31 BAV70W/RoHS 2 D29 0603220KV05T/RoHS 1 D10 0603220KV05T/RoHS V5A 1 L8 R133 BK1608LL121/PbF 0603/10R/5%/RoHS 2VGA_5V VGA_5V U15 1 2 3 4 GND R136 NC VCC 8 VGA_5V NC VCLK 7 NC SCL 6 GND SDA 5 AT24C02-10TU-1.8/RoHS GND 0603/3.9K/5%/RoHS R68 0603/10K/5%/RoHS R135 0603/10K/5%/RoHS C23 0603/100n/25V/7/RoHS GND R60 GND 0603/47K/5%/RoHS ViewSonic Corporation Model Title Date ViewSonic Corporation 49 Confidential - Do Not Copy VE1920wmb-2 VGA Rev: V5A_ESD CON1 DDCD_DAT R39 R37 0603/0R/5%/RoHS R38 0603/0R/5%/RoHS 2 L6 1 DVI_5V 3 0603/100n/25V/7 0603/100n/25V/7 0603/100n/25V/7 0603/100n/25V/7 D17 UDZSF-5.6B/RoHS/OPEN GND 3 3 D4 BAV99W/RoHS BAV99W/RoHSBAV99W/RoHS 1 1 1 BAV99W/RoHS 1 C35 2 C34 2 C33 2 C32 2 2 C31 3 BAV99W/RoHS 1 2 2 C30 2 3 BAV99W/RoHS 1 1 2 BAV99W/RoHS 1 C29 GND B+ 0603/10R/5%/RoHS BR42 0603/10R/5%/RoHS G+ R43 0603/10R/5%/RoHS GR44 0603/10R/5%/RoHS R+ R45 0603/10R/5%/RoHS RR46 0603/10R/5%/RoHS CLK+ 0603/10R/5%/RoHS D20 D21 D22 D23 D3 R47 CLK- 3 3 3 C28 V5A_ESD C27 1206/10u/16V/5/RoHS D19 GND 3 R41 2DS-0342-001 BAV99W/RoHS 1 AT24C02-10TU-1.8/RoHS 0603/10R/5%/RoHS D18 2 2 C26 BAV70W C25 0603/100n/25V/Y/RoHS R50 R51 D15 U10 0603/3.9K/5%/RoHS 0603/100n/25V/Y/RoHS UDZSF-5.6B/PbF R48 0603/10K/5%/RoHS 1 NC VCC 8 R49 0603/47K/5%/RoHS 0603/10K/5%/RoHS 2 NC 7 VCLK 3 NC 6 SCL 4 GND SDA 5 UDZSF-5.6B/PbF R40 D16 1 D14 UDZSF-5.6B/PbF C162 C163 1 V5A D13 0603/100p/50V/N 0603/100p/50V/N L5 V5A 0603/0R/5% DVI_5V V5A 0603/10K/5%/RoHS GND DDCD_DAT BK1608LL121/RoHS 2 DAT0+ DAT0DAT1+ DAT1DAT2+ DAT2DAT3+ DAT3DAT4+ DAT4DAT5+ DAT5clk+ clk- 18 17 10 9 2 1 13 12 5 4 21 20 23 24 DDCD_CLK 1 1/3shield 2/4shield 0/5shield clk shield 11 3 19 22 DDCD_CLK DDCD_DAT 2 25 26 27 29 28 8 15 6 7 14 16 DDCD_CLK 1 R G B RGB GND HSYNC VSYNC SYNC GND DDC SCL DDC SDA +5V HPD V5A_ESD 0603/100n/25V/7 0603/100n/25V/7 0603/100n/25V/7 0603/100n/25V/7 ViewSonic Corporation GND Model Title Date ViewSonic Corporation 50 Confidential - Do Not Copy VE1920wmb-2 DVI Rev: 5 6 7 8 5 6 7 8 4 3 2 1 RP46 0603*4/10K/5%/RoHS 4 3 2 1 V33C RP47 0603*4/10K/5%/RoHS Bead Array LP8,LP9,LP11=>modified RoHs MENU LEFT RIGHT TURBO AUTO LED_O LP6 1 2 3 4 LP7 1 2 3 4 LED_G POWER CN3 8 BK32164M121 7 6 5 8 BK32164M121 7 6 5 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 L1 AUDIOR- 1 2 MPZ1608S221/RoHS AUDIOR+ CP7 CP8 0603*4/100n/25V/RoHS 0603*4/100n/25V/RoHS V33C R62 0603/10K/5%/RoHS 5 6 7 8 R36 0603/1K/5%/RoHS/OPEN R7 5 6 7 8 V33C 4 3 2 1 4 3 2 1 L2 V33C AUDIOL- 1 2 MPZ1608S221/RoHS HEADER 10_2/RoHS L3 1 2 MPZ1608S221/RoHS GND 3 2 L4 1 TP0610K/PbF Q12 Q13 AUDIOL+ 1 1 2 MPZ1608S221/RoHS LED_OR 2 3 2N7002/RoHS/OPEN 0603/0R/5%/RoHS C2 0603/100n/25V/Y/RoHS/OPEN R3 0603/249R/1%/RoHS GND GND GND LED_O V33C V33C R2 0603/1K/5%/RoHS/OPEN 3 1 3 TP0610K/PbF Q14 R8 Q15 2N7002/RoHS/OPEN 0603/0R/5%/RoHS 1 LED_GL 2 2 R63 0603/10K/5%/RoHS R4 0603/249R/1%/RoHS C1 0603/100n/25V/Y/RoHS/OPEN ViewSonic Corporation LED_G GND GND Model Title Date ViewSonic Corporation 51 Confidential - Do Not Copy VE1920wmb-2 OSD Rev: VCC STV CPV FSTH FB2P FB2N FB1P FB1N FB0P FB0N OE STB BB2P BB2N BB1P BB1N BB0P BB0N FSTH BG2P BG2N BG1P BG1N BG0P BG0N FG2P FG2N FG1P FG1N FG0P FG0N POL BCKP BCKN FCKP FCKN PANEL_ON/OFF STB POL BR2P BR2N BR1P BR1N BR0P BR0N STB POL FR2P FR2N FR1P FR1N FR0P FR0N DCDC_ON/OFF V33P OE CPV STV GND VCM_PWM BSTH BSTH OE CPV STV V5A GND V5A GVOFF VCM_PWM DCDC_ON/OFF PANEL_ON/OFF GVOFF VCM_PWM DCDC_ON/OFF PANEL_ON/OFF VCC V33P GVOFF V12A GND GND V12A FSTH BSTH GND S Board X Board RA N/P --> BA P/N GA N/P --> GA P/N BA N/P --> RA P/N ViewSonic Corporation Model ViewSonic Corporation 52 Confidential - Do Not Copy VE1920wmb-2 Title PANEL INTERFACE Date Rev: 11. PCB Layout Diagrams ViewSonic Corporation 53 Confidential - Do Not Copy VE1920wmb-2 ViewSonic Corporation 54 Confidential - Do Not Copy VE1920wmb-2 ViewSonic Corporation 55 Confidential - Do Not Copy VE1920wmb-2 ViewSonic Corporation 56 Confidential - Do Not Copy VE1920wmb-2 ViewSonic Corporation 57 Confidential - Do Not Copy VE1920wmb-2 * Reader’s Response* Dear Readers: Thank you in advance for your feedback on our Service Manual, which allows continuous improvement of our products. We would appreciate your completion of the Assessment Matrix below, for return to ViewSonic Corporation. Assessment A. What do you think about the content of this Service Manual? Unit Excellent Good Fair Bad 1. Precautions and Safety Notices 2. Specification 3. Front Panel Function Control Description 4. Circuit Description 5. Adjustment Procedure 6. Troubleshooting 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 Excellent Good Fair Bad 1. Service Manual Content 2. Service Manual Layout 3. The form and listing C. Do you have any other opinions or suggestions regarding this service manual? Reader’s basic dada: Name: Title: Company: Add: Tel: Fax: 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 ([email protected]) ViewSonic Corporation 58 Confidential - Do Not Copy VE1920wmb-2