Service Manual ViewSonic VX2245wm-1 Model No. VS11349 22” Color TFT LCD Display (VX2245wm-1_SM Rev. 1a Oct.
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.
TABLE OF CONTENTS 1. Precautions and Safety Notices 1 2. Specification 4 3. Front Panel Function Control Description 14 4. Circuit Description 24 5. Adjustment Procedure 31 6. Troubleshooting Flow Chart 63 7. Recommended Spare Parts List 71 8. Exploded Diagram and Exploded Parts List 73 9. Block Diagram 76 10. Schematic Diagrams 77 11.
1. Precautions and Safety Notices 1. Precautions and Safety Notices 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.
(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.
Correct methods : Incorrect Methods : Only touch the metal-frame of the panel or the front cover of the monitor. Do not touch the surface of the polarizer . 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 .
2. Specification INTRODUCTION FEATURES TFTLCD PANEL 1st CMO A220Z1 Input Signal Output Signal Sync Compatibility Compatibility Power Voltage Power Consumption USB Card reader Speaker Ergonomics OSD Control Dimension Weight Operating Condition Storage Condition Regulation Size Luminance (Typ) Contrast Ratio (Typ) Colors Response Time Viewing Angle (H/V) Recommend resolution Analog (Head) Video Digital (Head) 3.5 mm Audio in (Head) Audio 3.5mm 2 in 1 Audio in (Base) 3.
ViewDock – Multimedia base Spec. Device prococal USB 2.0/1.1 OHCI (Open Host Controller Interface) EHCI (Enhanced Host Controller Interface) USB 2.0 Speed USB 1.x Speed Mac OS X with USB 2.0 Support Compatible Operating Microsoft Windows XP/Me/2000/98SE with USB 2.0 Support Systems Mac OS 8.6 or above with USB 1.x Support and USB Card Support 1.4.1 Microsoft Windows XP/Me/2000/98SE with USB 1.
Package content (default x 1; 4 in set) Viewdock/Quick start guide/CD(for card reader windows 98 driver)/2-in-1 Aduio cable/USB cable/Power adapter/iPod adapter set Product definition and specification Region VSA VSAP VSE VSCN (M) (A)/(P)/(J)/(S)/(K) (E)/(U) (G) Product Name VX2245wm Model Number VS11349 OSD Languages English, French, German, Italian, Spanish, , Finnish, Japanese, Traditional Chinese, Simplified Chinese TFT LCD Panel and Model # CMO A220Z1 Scalar Realtek, Model # :RTD255
4-1 GENERAL specification Test Resolution & Frequency 1680x1050 @ 60Hz Test Image Size Full Size Factory Default: Contrast and Brightness Controls Contrast = 70%, Brightness = 100% 4-2 VIDEO INTERFACE Analog Input Connector Digital Input Connector Default Input Connector Video Cable Strain Relief Video Cable Connector DB-15 Pin out Resolution Compatibility DB-15 (Analog), refer the appendix A DVI-D (Digital), refer the appendix B Defaults to the first detected input Equal to twice the weight of the m
compliance with ISO 7779 (DIN EN27779:1991) Noise measurements of machines acoustics. Power Switch noise shall not be considered.
be not full screen (Still at the center),and the information OSD shows 640x480 For Analog sync, the image vertical size image will 15 720 x 576 @ 50 Hz, 31.3 KHz 3 3 3 3 be not full screen (Still at the center),and the information OSD shows 800x600 16 800 x 600 @ 56 Hz, 35.1 KHz 3 3 3 3 17 800 x 600 @ 60 Hz, 37.9 KHz 3 3 3 3 18 800 x 600 @ 72 Hz, 48.1 KHz 3 3 3 3 19 800 x 600 @ 75 Hz, 46.9 KHz 3 3 3 3 20 800 x 600 @ 85 Hz, 53.7 KHz 3 3 3 3 21 832 x 624 @ 75 Hz, 49.
Changing Modes Maximum Mode Change Blank Time for image stability : 5 seconds (Max), excluding “Auto Adjust” time Under DOS mode (640 x 350, 720 x 400 & 640 x 400), “Auto Adjust” it should recall factory setting when execute The monitor needs to do “Auto Adjust” the first time a new mode is detected (see section “0-Touch™ Function Actions”) While running Change Mode, Auto Adjust or Memory Recall, the image shall blank 4-5 FRONT PANEL CONTROLS AND INDICATORS Front Panel Hardware Controls Power Switch (Fr
Language [English, French, German, Italian, Spanish, Finnish, Japanese, Simplified Chinese, Traditional 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, Opticolor On, and Opticolor Skin Tone On *3 These functions are not available under Native Resolution Mode *4 These functions setting can be recalled to default value by pressing [▼]+[▲] [Remark] Please refer to the
4-7 TFT LCD PANEL 1st Source Panel Model number Type Active Size Pixel Arrangement Pixel Pitch Glass Treatment # of Backlights Backlight Life Luminance (5-point) – Condition: CT = 6500K, Contrast = Max, Brightness = Max Brightness Uniformity Contrast Ratio Color Depth Viewing Angle (Horizontal) Viewing Angle (Vertical) CMO A220Z1 TN type with RSDS interface 22” wide ; 473.76 (H) x 296.1 (V) RGB Vertical Stripe 0.282(H) x 0.
Condition: Contrast = Default Brightness = Default CCT = 6500K Lv (9300k) – Condition: Contrast = Default Brightness = Default Color Temperature = 9300K Lv (7500k) – Condition: Contrast = Default Brightness = Default Color Temperature = 7500K Lv (5400k) – Condition: Contrast = Default Brightness = Default Color Temperature = 5400K Lv (Brightness) –Condition: Contrast = 100% Lv (Contrast) –Condition: Brightness = 100% Lv (9300k) / Lv (Def) x 100% > 70% Lv (7500k) / Lv (Def) x 100% > 75% Lv (5400k) / Lv (D
3. Front Panel Function Control Description Adjusting the Screen Image Use the buttons on the front control panel to display and adjust the OSD controls which display on the screen. The OSD controls are explained at the top of the next page and are defined in “Main Menu Controls” on page 10. Main Menu with OSD controls Front Control Panel shown below in detail Standby Power On/Off Power light Blue = ON Orange = Power Saving Displays the control screen for the highlighted control.
Do the following to adjust the display setting: 1. To display the Main Menu, press button [1]. NOTE: All OSD menus and adjustment screens disappear automatically after about 15 seconds. This is adjustable through the OSD timeout setting in the setup menu. 2. To select a control to adjust, pressSorTto scroll up or down in the Main Menu. 3. After the desired control is selected, press button [2]. A control screen like the one shown below appears.
Main Menu Controls Adjust the menu items shown below by using the up S and down T buttons. Control Explanation Auto Image Adjust sizes and centers the screen image automatically. Contrast adjusts the difference between the image background (black level) and the foreground (white level). Brightness adjusts background black level of the screen image. Input Select toggles between inputs if you have more than one computer connected to the VX2245wm.
Control Explanation 9300K-Adds blue to the screen image for cooler white (used in most office settings with fluorescent lighting). 7500K - Adds blue to the screen image for cooler white (used in most office settings with fluorescent lighting). 6500K-Adds red to the screen image for warmer white and richer red. 5400K-Adds green to the screen image for a darker color. User Color Individual adjustments for red (R), green (G), and blue (B). 1. To select color (R, G or B) press button [2]. 2.
Control Explanation Horizontal Size adjusts the width of the screen image. H./V. Position (Horizontal/Vertical Position) moves the screen image left or right and up or down. Fine Tune sharpens the focus by aligning text and/or graphics with pixel boundaries. NOTE: Try Auto Image Adjust first. Sharpness adjusts the clarity and focus of the screen image. OptiColor Mode provides an optimum display environment depending on the contents displayed. It contains 7 user-selectable presets.
Control Explanation Setup Menu displays the menu shown below: Language Select allows the user to choose the language used in the menus and control screens. Resolution Notice allows the user to enable or disable this notice. If you enable the Resolution Notice shown above and your computer is set at a resolution other than 1680 x 1050, the following screen appears. OSD Position allows the user to move the OSD menus and control screens. OSD Timeout sets the length of time the OSD screen is displayed.
Physical Description Please refer to the following illustrations to identify the components of the ViewDock.
Card Reader Installation Refer to the following information After connecting the ViewDock to your PC, Windows File Manager will show 4 extra icons. Step1. Please check your card socket Step2. Insert your memory card. Each slot of the card reader will be recognized as a Removable Disk and the icon will be shown in "My Computer" of Windows You do not need to install any special drivers for the Card Reader if your OS is Windows 2000/ ME/XP.
USB Hub Installation Refer to the following information Downstream port Connect to device Type A female Connect any USB devices via the USB ports on the ViewDock. Windows will auto detect and install the generic Windows USB driver for USB 1.1/2.0 device operation. You do not need to install any special drivers for the USB Hub if your OS is Windows 2000/ ME/XP. USB hub installation guide for Windows 98SE : Insert the included CD into the CD-ROM drive.
iPod adapter insert description: iPod with video adaptor is a default setting for multimedia base. Subwoofer Volume Control Refer to the following information 1. Adjust subwoofer volume via volume control 2. " " Turn right to increases the subwoofer volume. 3. " " Turn left to decreases the subwoofer volume. 4. In order to obtain the optimum listening environment, please adjust the volume of stereo speakers in the monitor head via the monitor OSD menu to match and balance the subwoofer volume.
4. Circuit Description 1.RTD 2553V Realtek RTD2553V series products are all-in-one LCD monitor controllers supporting UXGA / WSXGA+ / WXGA+ / SXGA (optional), and integrate Realtek high performance ADC, TMDS Rx(optional),scaling engine, OSD engine, LVDS Tx, RSDS Tx and so on. Moreover, all products are pin compatible in QFP128-pin package to save cost and make the design easier. 2. RTD2120 This chip is the micro-processor of LCD monitor.
Analog EDID Time: 13:26:13 Date: Thu Jun 08, 2006 ______________________________________________________________________ ______________________________________________________________________ VIEWSONIC CORPORATION EDID Version # 1, Revision # 3 DDCTest For: ViewSonic VX2245wm ______________________________________________________________________ ______________________________________________________________________ EDID Block 0, Bytes 0-127 128 BYTES OF EDID CODE: 0 1 2 3 4 5 6 7 8 9 _________
(23) Display Gamma ________________________________ (24) Power Management and Supported Feature(s): = 2.20 Active Off/Very Low Power, Standard Default Color Space, Preferred Timing Mode Display Type = R/G/B Color (25-34) CHROMA INFO: Red X - 0.644 Green X - 0.286 Blue X - 0.143 White X - 0.313 Red Y - 0.347 Green Y - 0.603 Blue Y - 0.070 White Y - 0.
Horizontal: Active Time: 1680 pixels Blanking Time: 560 pixels Sync Offset: 104 pixels Sync Pulse Width: 176 pixels Border: 0 pixels Frequency: 65.29 KHz Active Time: 1050 lines Blanking Time: 39 lines Sync Offset: 3 lines Sync Pulse Width: 6 lines Vertical: Border: 0 lines Frequency: 59.
Digital EDID Time: 13:27:26 Date: Thu Jun 08, 2006 ______________________________________________________________________ ______________________________________________________________________ VIEWSONIC CORPORATION EDID Version # 1, Revision # 3 DDCTest For: ViewSonic VX2245wm ______________________________________________________________________ ______________________________________________________________________ EDID Block 0, Bytes 0-127 128 BYTES OF EDID CODE: 0 1 2 3 4 5 6 7 8 9 ____________
(23) Display Gamma ________________________________ (24) Power Management and Supported Feature(s): = 2.20 Active Off/Very Low Power, Standard Default Color Space, Preferred Timing Mode Display Type = R/G/B Color (25-34) CHROMA INFO: Red X - 0.644 Green X - 0.286 Blue X - 0.143 White X - 0.313 Red Y - 0.347 Green Y - 0.603 Blue Y - 0.070 White Y - 0.
Horizontal: Active Time: 1680 pixels Blanking Time: 560 pixels Sync Offset: 104 pixels Sync Pulse Width: 176 pixels Border: 0 pixels Frequency: 65.29 KHz Active Time: 1050 lines Blanking Time: 39 lines Sync Offset: 3 lines Sync Pulse Width: 6 lines Border: 0 lines Frequency: 59.
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.
7. 25 Gray Test Signal: 1280*1024@60Hz Test Pattern: Full Screen 25% White (Gray) Inspection Item: Particle, Line Defect & Mura 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.
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 15.
Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 ViewSonic Corporation 34 Confidential - Do Not Copy VX2245wm-1
BIOS update procedure 1. To setup ISP environment Hardware: PC or Notebook , Parallel(Printer) cable , ISP tool( Fig 1) Software: ISP driver . If the O.S. was Win2000 or Win XP please have to install Fig1 PORT95NT.
2. Install ISP 2.1 User could download ISP driver and PORT95NT install file from Myson Century website( //www.myson.com.tw ) 2.2 After extracting the zip file, the total files list as Fig 2.2, and double click the file of setup.exe to install. Fig 2.2 2.3 Press “Next＂ button to continue., see Fig 2.3 Fig 2.
2.4 Keep default setting or press “Change＂ button for selecting the path that you want , and then press“Next＂button to continue, see Fig 2.4. Fig 2.4 2.5 Press “Install＂ button to continue, see Fig 2.5 Fig 2.
2.6 The Installer Information shows package warning, press “Ignore＂ button to continue, see Fig 2.6. Fig 2.6 2.7 Installation has finished, press “Finish＂ button, see Fig 2.7. Fig 2.
3. ISP security code 3.1 After installation, we could find the shortcut in the setting path or the program bar (default setting), see Fig 3.1. Fig 3.1 2.2 Security file is a key to use ISP function, press “確定＂ button, see Fig 3.2. Fig 3.
3.3 The warning is used to remind user of that different CPU rate may cause ISP function fail(it is limited by IIC protocol), press “確定＂ button, see Fig 3.3. Fig 3.3 2.4 Press“Create Security File＂ button to key in security code. Adjusting bar to decrease speed of IIC bus, see Fig 3.4. Fig 3.
3.5 At least 2 Command No of security code, see Fig 3.5, and different security code between hardware ISP and software ISP. The security code of software ISP is set by user while coding, but the security code of hardware ISP is set by Myson Century. Fig 3.
3.6 Fig 3.6 shows the setting for security code of hardware ISP, it needs 4 Command No, and key in command sequentially for 94, 94, AC, CA, 53. Fig 3.
3.7 Fig 3.7 shows the setting for security code of software ISP, it needs 2 Command No, and key in command sequentially for 7C, 4C, 77. The Command No and command must be set by user while coding. About the detail of setting, please refer to Section 6 Boot code of ISP. Fig 3.
4. Use ISP to program MCU 4.1 Select MTV type first, load the binary or Intel hex file that you want to program into the MCU, and select “Auto＂ item, then press “RUN＂ button, see Fig 4.1. 4.2 If user changes the MTV type, it must load file again, or the buffer of load file will be cleared. 4.3 CRC (cyclic redundancy check): the host can check CRC register＇s result instead of reading every byte in flash. The message of Check MCU CRC OK means that the Host verify ok for the progress of program. Fig 4.
5 Use ISP to read MCU content 5.1 Only software ISP could read the MCU content, it is according to program the boot code while coding. The limitation is used for the security of customer＇s code. Select “Read Target＂ item, and press“RUN＂ button, the MCU content will show as Fig 5.1. Fig 5.
5.2 If user uses hardware ISP to read MCU content, it shows as Fig 5.2. Fig 5.
6 Re-entry the ISP Mode When you could not select or click ｀Reset MCU＇ button and enter ISP mode again, you refer the message as below: ViewSonic Corporation 47 Confidential - Do Not Copy VX2245wm-1
Note: (1)Disable the ‘Enter ISP Mode’ option to avoid the error message display. (2)If you using the MTV312M64 or before MCU serials, the MCU will always in ‘ISP Mode’even programming fail or erase MCU that instead of select or press ‘Reset MCU’.
7. Boot code of ISP 7.1 Hardware ISP (1) Without boot code (2) Fixed security code: 94, 94, AC, CA, 53 (3) Attention to the pin of HSCL (1) and HSDA (1) should keep in enable (4) MTV412M, MTV512M, CS8954 support hardware ISP 7.2 Software ISP (1) With boot code (2) User define the security code (3) Attention to the pin of HSCL (1) and HSDA (1) should keep in enable (4) Only software ISP could read the MCU content (5) MTV212M, MTV312M, MTV230M, MTV412M, MTV512M, CS8954 support software ISP 7.
7.4 The followings show the relationship between the code and the security code.
8. ISP Adaptor Schematic 9.
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 1 Figure 2 1.3 Put the cushion into the carton then place the monitor on the cushion. (Figure 3) 1.4 Join the cushions to the monitor then place all the accessories into the carton. As last, close the carton and seal it with tape.
Monitor Assembly and Disassembly 1 Separate Stand Assy 1 Remove Stand Cover Step 1 : Remove the Stand Covers. Step 2 : Loose and remove 6 screws Step4 : Remove the Stand Assy Step 5 : Completed.
2 Separate Rear Cover (Rear Case Assy) Separate Bezel hooks to take Bezel and Rear Cover apart. Step 1 : Loose and remove 3 screws. Step 2 : Separate Bezel hooks to take Bezel and Rear Cover apart. Step 3 : Remove Rear Cover. Step 4 : Completed.
3 Remove Power Board and AD Board 3.1 Remove Metal Cover Step 1 : Remove FFC from OSD Board. Step 2 : Lift up LCD module and remove bezel. Step 3 : Remove 4 pieces of Backlight wires. Step 4 : Loose and remove 4 screws.
Step 5 : Loose and remove 2 screws. Step 6 : Loose and remove 4 screws. Step 7 : Remove the PCBA Cover 3.2 Remove Power Board and AD Board Step 1 : Loose and remove 4 screws.
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.
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.
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.
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 Step 4 : Fasten 4 fixed screws. Step 5 : Insert 4 pieces of Backlight wires. Step 6 : Join LCD module and remove bezel. Step 7 : Insert FFC. Step 8 : Completed.
8. Rear Assy & Stand Assembly Step 1 : Place Rear Cover. Step 2 : Fasten 3 fixed screws. Step 3 : Place the Stand Assy. Step 4 : Fasten 6 fixed screws. Step 5 : Join the Stand Covers. Step 6 : Completed.
6.
Defect Mode Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair stage 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 AD/B Change Display Wave 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 64 Con
Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair stage B Display White Out AD/B Change Check PCBA Power/B Change Booting Delay Check PCBA Inverter/B Change Brightness OSD/B Change Even Abnormal Power/B Change Check PCBA Inverter/B Change Beat Display No Backlight Panel Change Check Panel Check Adapter Adapter Change No signal AD/B Change R.G.
Defect Mode Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair stage 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 Check PCBA AD/B Change Abnormal AD/B Change Peculiar Smell Check PCBA Power/B Change Inverter/B Change Next Step NG TEST Completed ViewSonic Corporation 66 Confidential - Do Not Copy VX2245wm-1
Defect Mode Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair stage AD/B Change Power/B Change Power ON/OFF Abnormal Check PCBA No Power Check PCBA Turn Off CNT/B Change Inverter/B Change OSD/B Change Abnormal Check Wire Check Wire OSD Cable 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 Change LED Dark OSD/B Change LED Abnormal LED Loss OSD Cable Ch
Defect Mode Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair stage Abnormal BIOS &OSD OSD Key AD/B Change Unavailable CNT/B Change OSD Can’t Input Check PCB Inverter/B Change OSD Can’t Read OSD/B Change OSD No D-sub cable Change Display OSD cable Change Check Wire OSD Jiggle VGA cable Change DVI cable Change OSD Display Abnormal Abnormal Power/B Change Check BIOS BIOS Update AD/B Change Voice Loss Loudspeaker CNT/B Change Abnormal Loud Power/
Defect Mode Failure Analysis Repair Testing ※ “ Panel Change” Should be Performed to Level 3 Repair stage Other Abnormal Display Display Shut Check PCBA Down AD/B Change Power/B Change CNT/B Change Check Panel Check PCBA Display Flicker (tapping ) Panel Change AD/B Change CNT/B Change Check Panel DVI Signal Check PCB Panel Change AD/B Change Display Abnormal Check EDID Code Next Step EDID Update NG TEST Completed ViewSonic Corporation 69 Confidential - Do Not Copy VX2245wm-1
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. No image 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.
7. Recommended Spare Parts List RECOMMENDED SPARE PARTS LIST (VX2245wm-1) ViewSonic Model Number:VS11349 Rev: 1a Serial No. Prefix: QD0 Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Accessories: PC Board Assembly: Cabinets: Cables: Documentation: Hardware: Miscellaneous: Packing Material: Plastics: Description Power Cord,LP-53 & VCTF 0.75mm^2 3C Power Supply Board (Lips W/ Audio Vo.7) Main Board Rev.04 PCBA Rev.
BOM LIST (VX2245wm-1) ViewSonic Model Number: VS11349 Rev: 1a Serial No. Prefix: QD0 Item ViewSonic P/N 1 N/A 2 3 4 N/A N/A N/A 5 N/A 6 N/A 7 8 9 10 11 N/A N/A N/A N/A N/A 12 HW-00000553 13 HW-00006041 14 15 16 HW-00004042 N/A N/A 17 18 19 N/A CB-00008014 HW-00008002 20 B-00008026 21 B-00008027 22 N/A 23 N/A 24 HW-00000553 25 26 HW-00000555 HW-00008003 Ref. P/N Description Location ACF, COG, AC-8405Z-23 1.5mmX100M, 100000 mmx1.
8.
EXPLODED PARTS LIST (VX2245wm-1) ViewSonic Model Number: VS11349 Rev: 1a Serial No. Prefix: QD0 Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 18 19 20 21 22 ViewSonic P/N C-00008143 C-00008142 N/A N/A N/A N/A CB-00008015 C-00008144 N/A MULTIPLE MATCH N/A N/A N/A N/A HW-00008002 HW-00000553 HW-00004042 HW-00000553 N/A HW-00000555 HW-00008003 ViewSonic Corporation Ref.
PACKING PART LIST (VX2245wm-1 ) ViewSonic Model Number: VS11349 Rev: 1a Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ViewSonic Corporation Confidential - Do Not Copy 75 VX2245wm-1 ViewSonic P/N P-00008033 N/A P-00008139 P-00008140 N/A CB-00005678 CB-00005851 A-00005071 CB-00002083 N/A N/A N/A N/A N/A M-00008031 N/A Ref.
9. Block Diagram Speaker OSD Key Pad / Audio Out 3.
ViewSonic Corporation 77 RESET_MCU DDC_DAT DDC_CLK DDC_DAT DDC_CLK Confidential - Do Not Copy DDC_DAT DDC_CLK B3 BUS_POEWR BUS_POEWR DDC2_SCL DDC2_SDA DDC2_SCL DDC2_SDA CONNECT VGA_5V V5A VX2245wm-1 V18_ESD RESET_MCU GNDB GNDG GNDR SOG BIN GIN RIN YOUT GNDB GNDG GNDR SOG BIN GIN RIN YOUT RTD_SCSB RTD_SCLK GNDB GNDG GNDR SOG BIN GIN RIN RTD_SCSB RTD_SCLK VSYNC HSYNC RTD_SCSB RTD_SCLK FR2P FR2N FR1P FR1N FR0P FR0N FG2P FG2N FG1P FG1N FG0P FG0N FB2P FB2N FB1P FB1N FB0P FB0N BR2P BR2N BR1P B
FB1 RAI+ R1 1 C1 2 RIN 3 RIN 1 6 2 7 3 8 4 9 5 10 12 HSI VSI DDC_CLK 13 14 15 RAI+ TP TP2 TP TP3 TP TP4 TP TP5 TP TP6 TP TP7 TP C2 1 RAI- 1 RIN 1 GNDR R2 D1 1 SOG GAI+ GAIR3 BAI+ BAI- RAI- 2 11 DDC_DAT TP1 5 C3 1 GIN GNDR GNDR 5 1 GNDG C4 GND_POWER 1 BIN CON1 R5 R4 GND_POWER CA1 SOG SOG GND_POWER FB2 GAI+ 1 3 CONNECT C5 GIN 5 R7 R8 C6 1 V1 GNDB R6 2 GIN 4 1 5 D2 GND_POWER R9 2 GAI- C7 GNDG GNDG 5 BIN 5 GNDB 5 GND_POWER C8 4 VGA_
RX0P RX0P 5 DATA0- D4 RX0N 3 3 DATA0+ 1 5 RX2N 5 RXCN 5 2 2 DATA1- RX1N 3 3 5 D6 D7 1 1 4 2 DDC2_SDA C19 DATA2+ R18 RX2P RX2P 5 DATA2- D8 RX2N 3 DATA0+ DATA0DATA1+ DATA1DATA2+ DATA2- 4 2 C18 DDC2_SCL D9 1 1 C21 2 C20 CLK+ CLKCLK+ RXCP RXCP 5 CLK- RXCN 3 D10 GND_POWER D11 1 1 C23 2 1 Z5 2 C22 BUS_POEWR 2 4 RX1P DDC2_SCL DDC2_SDA 11 3 19 22 18 17 10 9 2 1 13 12 5 4 21 20 23 24 RX1P 3 DAT0+ DAT0DAT1+ DAT1DAT2+ DAT2DAT3+ DAT3DAT4+ DAT4DAT
DDC_CI_5V DDC_CI_5V D12 VGA_5V 3 BUS_POWER 1 2 1 2 2 3 8 7 6 5 2 Q1 BUS_POWER 1 RP1 1 2 3 4 D13 U1 3 6 8 11 DDC2_SDA DDC2_SCL DDC_CLK DDC_DAT 1B 2B 3B 4B DDC_CI_5V 14 7 VCC GND D14 2 5 9 12 1A 2A 3A 4A DDC_CLK_OUT 6 V5A V5A 2 1 2 DDC_DAT_OUT DDC_CI_5V 1 4 10 13 1OE 2OE 3OE 4OE D15 1 1 3 3 2,5 2,5 R21 D16 R20 3 R19 2 C25 Q2 GND_POWER GND_POWER DDC_CI_SEL MCU_VCC 2 1 GND_POWER 3.1~3.
Q5 4 3 YOUT 1 V33S XI 2 V33S V18C 1 2 1 2 V33S V33S FBS1 1 C30 C31 C32 C33 R42 2 FB5 3,6 FB4 R43 C35 C34 GND_POWER GND_POWER XI R45 6 VOL_ADJ R46 R47 PLL_TEST1 RX2P RX2N R49 RX1P RX1N R48 (PWM0) RX0P RX0N V33S 1 TMDS_V33 2 RXCP RXCN FB6 5 6 7 8 9 10 11 12 13 14 15 16 17 18 C37 TMDS_TST / PWM0 / TCON2 REXT TMDS_VDD RX2P RX2N TMDS_GND RX1P RX1N TMDS_VDD RX0P RX0N TMDS_GND RXCP RXCN 60 71 84 96 107 AR1N AR1P AR2N AR2P AR3N AR3P AG1N AG1P AG2N AG2P C36 V18_ESD 2
TP12 V5A V5A 3 V33D 1 VI(5V) 4 C41 VO(3.3V) VO(3.3V) (PANEL VCC) V33D 2 4 2 1 C44 B1 2 1 5.
11.
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* 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.
