Service manual

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Model No. VS10049

17” Color TFT LCD Display

Service Manual

ViewSonic VX724-1

ViewSonic



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

(VX724-1_SM Rev. 1b Jun. 2006)

Summary of content (93 pages)

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Service Manual ViewSonic VX724-1 Model No. VS10049 17” Color TFT LCD Display (VX724-1_SM Rev. 1b Jun.
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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.
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TABLE OF CONTENTS 1. Precautions and Safety Notices 1 2. Specification 5 3. Front Panel Function Control Description 17 4. Circuit Description 23 5. Adjustment Procedure 35 6. Troubleshooting Flow Chart 57 7. Recommended Spare Parts List 63 8. Exploded Diagram and Exploded Parts List 68 9. Block Diagram 79 10. Schematic Diagrams 81 11.
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1. Precautions and Safety Notices 1. Appropriate Operation (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) Turn off the product before cleaning. Use only a dry soft cloth when cleaning the LCD panel surface. Use a soft cloth soaked with mild detergent to clean the display housing. Use only a high quality, safety approved AC/DC power cord. Disconnect the power plug from the AC outlet if the product will not be used for a long period of time.
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(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.
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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 . If the surface of the panel is pressed by fingers, this may cause "MURA." Take out the monitor by grasping the cushion. If the monitor is removed by grasping the LCD panel, that may cause "MURA.
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Correct Methods : Incorrect Methods : Place the monitor on a clean & soft foam pad . ViewSonic Corporation If the monitor is placed on foreign objects, that could scratch the surface of the panel.
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2.
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POWER SUPPLY Internal Power Supply Part Number: FSP035-1PI01 Input Voltage Range 90 TO 264 VAC Input Frequency Range 47.5 TO 63 HERTZ Short Circuit Protection Output can be shorted without damage Over Current Protection 5.0 A typical at 12.0 VDC Leakage Current 3.5mA (Max) at 254VAC / 60Hz EFFICIENCY 65 % typical at 115VAC Full Load Fuse Internal and not user replaceable Power Dissipation 32 Watts (typ) Max Input AC Current 1.0 Arms @ 90VAC, 0.
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ELECTRICAL REQUIREMENT Horizontal / Vertical Frequency Horizontal Frequency 30 – 82 KHZ Vertical Refresh Rate 50 – 75 HZ Maximum Pixel Clock 135 MHz 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 @ 50Hz, 24.7kHz Yes No 5 640 x 480 @ 60Hz, 31.5kHz Yes Yes 6 640 x 480 @ 67Hz, 35.0kHz Yes Yes 7 640 x 480 @ 72Hz, 37.
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Primary Presets 1280x1024 @ 60Hz User Presets Number of User Presets (recognized timings) Available: 10 presets total in FIFO configuration Changing Modes - Maximum Mode Change Blank Time for image stability : 3 seconds (Max), excluding “Auto Image Adjust” time - Under DOS mode (640 x 350, 720 x 400 & 640 x 400), it should recall factory setting when execute “Auto I mage Adjust” - The monitor needs to do “Auto Image Adjust” the first time a new mode is detected (see section “0-Touch™ Function Actions”)
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TFT LCD PANEL Panel Characteristics: 1st Source Panel AUO M170EG01 V8 Type TN type with LVDS interface Active Size 337.9 (H) x 270.3 (V) Pixel Arrangement RGB Vertical Stripe Pixel Pitch 0.
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2ND Source Panel QDI QD17EL0709 Type TN type with LVDS interface Active Size 337.9 (H) x 270.3 (V) Pixel Arrangement RGB Vertical Stripe Pixel Pitch 0.
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3rd Source Panel QDI QD17EL0711 Type TN type with LVDS interface Active Size 337.9 (H) x 270.3 (V) Pixel Arrangement RGB Vertical Stripe Pixel Pitch 0.
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IMAGE PERFORMANCE Factory Defaults Item Defaults Item Defaults Contrast 70% OSD H. Position 50% Brightness 100% OSD V.
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Preset Color Temperatures SRGB It should meet IEC 61966-2-1 (1999-10) standard Preset 1 9300K Wx= 0.283 +/- 0.02 CCT (Max) = 10250K CCT (Min) = Wy= 0.298 +/- 0.02 8500K Preset 2 6500K (Primary) Wx= 0.313 +/- 0.02 CCT (Max) = 6950K Wy= 0.329 +/- 0.02 CCT (Min) = 6100K Preset 3 5400K Wx= 0.335 +/- 0.02 CCT (Max) = 5915K Wy= 0.350 +/- 0.02 CCT (Min) = 4935K Preset Color Temperature Each color preset shall be adjustable. Adjustability individually controlled.
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MECHANICAL Dimension (Desktop) Width 388 mm (15.3 inch) Height 438 mm (17.2 inch) Depth 176 mm ( Monitor Weight 6.9 inch) 5 kg / 11 lbs Dimension (Head Only / Wall Mount) Width 388 mm (15.3 inch) Height 332 mm (13.1 inch) Depth 62 mm (2.4 inch) Monitor Weight 3.5 kg / 7.7 lbs Ergonomics Tilt Up From 0º up to ≧20º Tilt Down From 0º down to -3º ~ -5 º Mechanical Specifications - Screen Printed Parts : Artwork shall be provided by ViewSonic.
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Tilt/Swivel Base Mechanical Interface The LCD monitor shall be in compliance with the most current revision of the VESA “Flat Panel Monitor Physical Mounting Interface” Standard, “FPMPMI Standard” PACKAGING Package Specifications ViewSonic Packaging Specification The “Top Level Assembly” shall meet the ViewSonic Corporation Packaging Specification, VSCPACSPEC003 Ink Multiple Trips The ink shall not rub off after a suitable drying time.
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Vibration Test - Vibration Frequency : 1 – 200 Hz - Acceleration : 1.14 G RMS - Sweep Time : 1 oct. / min - Test Time : 60 min per axis, total 3 axis / 6 main face -Vibration Test Data shall be submitted for approval to ViewSonic before Mass Production Drop Test (100G) - Weak Corner : 76.2 cm - Six Faces : 76.2 cm - 3 Edges Radiating From Weak Corner : 76.
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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 17. Main Menu with OSD controls Front Control Panel shown below in detail Scrolls through menu options and adjusts the displayed control. Also a shortcut to display the Contrast adjustment control screen.
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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 30 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.
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Main Menu Controls Adjust the menu items shown below by using the upSand downTbuttons. Control Explanation Auto Image Adjust automatically sizes, centers, and fine tunes the video signal to eliminate waviness and distortion. Press the [2] button to obtain a sharper image. NOTE: 1. Auto Image Adjust works with most common video cards. If this function does not work on your LCD display, then lower the video refresh rate to 60 Hz and set the resolution to its pre-set value. 2.
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Control Explanation 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. To adjust selected color, pressSorT. Important: If you select RECALL from the Main Menu when the product is set to a Preset Timing Mode, colors return to the 6500K factory preset.
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Control Explanation The Manual Image Adjust controls are explained below: H./V. Position (Horizontal/Vertical Position) moves the screen image left or right and up or down. H. Size (Horizontal Size) adjusts the width of the screen image. Fine Tune sharpens the focus by aligning the text and/or graphic characters with pixel boundaries. Sharpness adjusts the clarity and focus of the screen image.
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Control Explanation OSD Timeout sets the length of time the on-screen display screen is displayed. For example, with a “15 second” setting, if a control is not pushed within 15 seconds, the display screen disappears. OSD Background allows the user to turn the On-Screen Display background On or Off. Memory Recall returns the adjustments back to factory settings if the display is operating in a factory Preset Timing Mode listed in the Specifications of this manual.
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4. Circuit Description 1. Outline 1.1 Buttons on the front panel: Power On/Off button, button 2 (ENTER / INPUT SELECT), up arrow button, down arrow button, button 1 (MENU). 1.2 The D-sub 15-pin connector, DVI-I connector and AC-IN jack are located on the back side of the cabinet. 1.3 The OSD menu includes the following functions: Auto Image Adjust (only active under analog input) Contrast/Brightness Audio Adjust Color Adjust Information Manual Image Adjust Setup Menu Memory Recall 1.
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2.3 Video signal connector for digital input: 24pin DVI-D connector CN9 RX2RX2+ GND RX4RX4+ SCL SDA VS RX1RX1+ GND RX3RX3+ 5V GND HP RX0RX0+ GND RX5RX5+ GND RXC+ RXC- Pin No. 3. RX2- TMDS negative differential input, channel 2 2 RX2+ TMDS positive differential input, channel 2 3 GND Logic Ground 4 RX4- Reserved. No connection 5 RX4+ Reserved. No connection 6 SCL DDC2B Clock 7 SDA DDC2B Data 8 VS Reserved.
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3.2 Power 3.2.1 Power supply Input voltage 100~240Vac Power frequency 50~60Hz Input current <1.5A RMS @90V AC Inrush current <0.8A RMS @180V AC 50A(Max) at 120Vac(cold start) Power consumption 3.2.2 35W(typical);40Watts(Max) Power Management State Power Indicator On 35Watts Green Standby < 1Watts Amber Off <1Watts Off 3.3 Acceptable timing This LCD display can automatically detect and display input signals whose timing falls within the following limits.
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5.
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(35) ESTABLISHED TIMING I: 720 X 400 @ 70Hz (IBM,VGA) 640 X 480 @ 60Hz (IBM,VGA) 640 X 480 @ 67Hz (Apple,Mac II) 640 X 480 @ 72Hz (VESA) 640 X 480 @ 75Hz (VESA) 800 X 600 @ 56Hz (VESA) 800 X 600 @ 60Hz (VESA) (36) ESTABLISHED TIMING II: 800 X 600 @ 72Hz (VESA) 800 X 600 @ 75Hz (VESA) 832 X 624 @ 75Hz (Apple,Mac II) 1024 X 768 @ 60Hz (VESA) 1024 X 768 @ 70Hz (VESA) 1024 X 768 @ 75Hz (VESA) 1280 X 1024 @ 75Hz (VESA) (37) Manufacturer's Reserved Timing: 1152 X 870 @ 75Hz (Apple,Mac II) (38-53) Standard
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______________________________________________________________________ (72-89) Detailed Timing / Descriptor Block 2: Monitor Serial Number: PSN050100001 _____________________________________________________________________ (90-107) Detailed Timing / Descriptor Block 3: Monitor Range Limits: Min Vertical Freq - 50 Hz Max Vertical Freq - 85 Hz Min Horiz. Freq - 30 KHz Max Horiz.
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Digital EDID ______________________________________________________________________ 128 BYTES OF EDID CODE: 0 1 2 3 4 5 6 7 8 9 ________________________________________ 0 | 00 FF FF FF FF FF FF 00 5A 63 10 | 1C 01 01 01 20 | 80 22 1B 78 2E C5 C5 A3 57 4A 30 | 9C 23 12 50 54 BF EF 80 81 80 40 | 71 4F 61 59 45 59 31 59 31 0A 50 | 01 01 01 01 30 2A 00 98 51 00 60 | 2A 40 30 70 13 00 52 0E 11 00 70 | 00 1E 00 00 00 FF 00 50 53 4E 80 | 30 35 3
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(35) ESTABLISHED TIMING I: 720 X 400 @ 70Hz (IBM,VGA) 640 X 480 @ 60Hz (IBM,VGA) 640 X 480 @ 67Hz (Apple,Mac II) 640 X 480 @ 72Hz (VESA) 640 X 480 @ 75Hz (VESA) 800 X 600 @ 56Hz (VESA) 800 X 600 @ 60Hz (VESA) (36) ESTABLISHED TIMING II: 800 X 600 @ 72Hz (VESA) 800 X 600 @ 75Hz (VESA) 832 X 624 @ 75Hz (Apple,Mac II) 1024 X 768 @ 60Hz (VESA) 1024 X 768 @ 70Hz (VESA) 1024 X 768 @ 75Hz (VESA) 1280 X 1024 @ 75Hz (VESA) (37) Manufacturer's Reserved Timing: 1152 X 870 @ 75Hz (Apple,Mac II) (38-53) Standard
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______________________________________________________________________ (72-89) Detailed Timing / Descriptor Block 2: Monitor Serial Number: PSN050100001 ______________________________________________________________________ (90-107) Detailed Timing / Descriptor Block 3: Monitor Range Limits: Min Vertical Freq - 50 Hz Max Vertical Freq - 85 Hz Min Horiz. Freq - 30 KHz Max Horiz.
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6. THEORY OF OPERATION This section describes the function of the LCD monitor per functional block. This monitor includes MB board, power board and button board. 6.1 MB BOARD The MB board is a two-layer, single-grounded design with ground and internal planes provided. DC power from the power board enters the board through a 6P connector. The other connector on the board is for the button board. The VGA cable is a signal cable that carries the video, sync and DDC signals from the PC VGA adapter.
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d) MTV312 Micro Controller: The MTV312 micro controller (MCU) serves as the system micro controller. It programs the RTD2523 and manages other devices in the system such as the keypad, the backlight, the LED, the audio system and the non-volatile RAM using general purpose input/output (GPIO) pins. Pin number Pin Name Pin Usage 1 P5.2 Key / Power on, off 13 P3.4 NV_RAM (U4) SDA 14 P3.5 NV_RAM (U4) SCL 41 P5.4 Key_down 40 P5.5 Key_right 42 P5.3 Key_up 34 P5.6 Key_left 9 P6.
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6.2 Power (Inverter) Board This is a specific power (inverter) board for VX912 monitor with output of 40W / 12V / 3.5A. It provides 12 VDC to drive the four cold cathode fluorescence tubes in the backlight. 6.2.1 The inverter's electrical specification is described below. Input Output Rated Input Voltage 12Vdc Input Voltage Range 11.4 ~ 12.6 Vdc Input Current <2A On / Off control Voltage 2~3.
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5. Adjustment Procedure OSD Function Menu A. When in Analog Input Mode 1. Main Menu Press the [1] (Menu) button to enter the Main Menu: Press the [▲] button to highlight the previous item or the [▼] button to highlight the next item. Press the [1] (Menu) button to exit the Main Menu. (1) Auto Image Adjust Page: Press the [2] button to execute the auto image adjust function. Press the [1] button to exit the page. (2) Contrast/Brightness Page: Press the [2] button to enter the contrast adjustment page.
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(5) Information Page: Press the [2] button to enter the information page. Press the [1] button to exit the information page. (6) Manual Image Adjust Page: Press the [2] button to enter the manual image adjustment page. Press the [1] button to exit the page. Press the [▲] button to highlight the previous item or the [▼] button to highlight the next item. 1) H./V. Position Item Press the [2] button to enter the horizontal/vertical postion adjustment page. Press the [1] button to exit the page.
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Press the [1] button to exit the page. Press the [▲] button to highlight the previous item or the [▼] button to highlight the next item. English, French… Option Press the [2] button to select the language. Press the [1] button to exit the page. 2) Resolution Notice Item Press the [2] button to enter the resolution notice page. Press the [1] button to exit the page. Enable, Disable Option Press the [2] button to select the highlighted option. Press the [1] button to exit the page.
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2. Other Menu: This “shortcut” menu is directly accessible without bringing up the OSD. (1) Contrast Dialog Press the [▲] or [▼] button to enter the Contrast Dialog. Press the [1] button to exit the Contrast Dialog. Press the [2] button to enter the Brightness Dialog. Press the [▲] button to increase the contrast. Press the [▼] button to decrease the contrast. (2) Brightness Dialog Press the [▲] or [▼] button to enter the Brightness Dialog. Press the [1] button to exit the Brightness Dialog.
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1) 2) 3) 4) 5) Press the [1] button to exit the page. Press the [▲] button to highlight the previous item or the [▼] button to highlight the next item. sRGB Item 9300K Item 6500K Item 5400K Item Press the [2] button to select the currently highlighted item. Press the [1] button to exit the currently highlighted item. User Color Item Press the [2] button to enter the user color page. Press the [1] button to exit the page. Red, Green, Blue Options: Press the [2] button to cycle among the colors.
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Press the [1] button to exit the page. Enable, Disable Option Press the [2] button to select the highlighted option. Press the [1] button to exit the page. Press the [▲] button to highlight the previous option or the [▼] button to highlight the next option. 3) OSD Position Item Press the [2] button to enter the OSD position adjustment page. Press the [1] button to exit the page. a) Horizontal Position Option Press the [2] button to enter the vertical position adjustment page.
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(2) Brightness Dialog Press the [▲] or [▼] button to enter the Brightness Dialog. Press the [1] button to exit the Brightness Dialog. Press the [2] button to enter the Contrast Dialog. Press the [▲] button to increase the brightness. Press the [▼] button to decrease the brightness. (3) Analog/Digital Dialog Press the [2] button to toggle between analog and digital modes. C.
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1. Function test (1) Test equipment Color video signal and pattern generator (or PC with SXGV resolution) (2) Test condition Before function testing and alignment, the unit must warm up for at least 30 minutes under the following conditions: 1. Room temperature; 2. With full-white screen, RGB, black pattern; 3. With cycled display modes. 2. Test display modes 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 Timing 640 x 350 @ 70Hz, 31.5kHz 640 x 400 @ 60Hz, 31.
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3. Test pattern Item 1 2 Test condition Frequency & performance Monitor saturation Pattern Cross-hatch pattern 16-gray scale pattern 3 RGB color performance RGB color 4 Sub-pixel defect RGB color 5 Full white Full white 6 7. 8.
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Pattern 5 Pattern 6 Pattern 7 Pattern 8 Pattern 9 ViewSonic Corporation 44 Confidential - Do Not Copy VX724-1
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6. Firmware update procedure : When examining a monitor, please check whether the firmware version is the latest. If not, please follow the procedure below to upgrade to the latest version. 1.
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2. Connection : To Monitor To PC Appendix A : How to install the software for ISP: 1. To set up ISP environment: Hardware: PC or notebook, parallel (printer) cable, ISP tooling. Software: If OS is Win2000 or WinXP, please install "PORT95NT.exe". In order to ensure that the system can execute the ISP program, please adjust the BIOS settings in the PC or notebook as shown in Fig 0.0. Fig 0.
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2. Double-click the "PORT95NT.exe" icon in Windows and install the program; see Fig 0.1. Fig 0.1 3. Continue through the installation process by pressing "Next" four times; see Fig. 0.2. Fig. 0.
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4. Choose "Typical" then press "Next;" see Fig. 0.3. Fig. 0.3 5. Continue through the installation process by pressing "Next" four times; see Fig. 0.4. Fig. 0.
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6. When the installation is complete, restart the PC or notebook; see Fig 0.5. Fig. 0.5 Install ISP 1. The user may download the ISP driver and PORT95NT installation package from the Myson Century website (www.myson.com.) 2. The files extracted from the ZIP file are listed in Fig 1.0. Double-click setup.exe to install. Fig 1.
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3. Press the "Next" button to continue; see Fig 1.1. Fig 1.1 4. Press the "Change" button to change the install path if desired, and then press the "Next" button to continue; see Fig 1.2. Fig 1.
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5. Press the "Install" button to continue; see Fig 1.3. Fig. 1.3 6. When installation has finished, press the "Finish" button; see Fig 1.4. Fig. 1.
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Appendix B: How to use software to upgrade the BIOS: 1. After installation, shortcuts may be found in the settings path or the program menu (default setting); see Fig 2.1. Fig. 2.1 2. The security file is a key to use ISP functions; press the "OK" button. See Fig 2.2. Fig. 2.2 3. The warning shown in Fig. 2.3 is used to remind the user that a CPU rate that differs from IIC protocol may cause the ISP functions to fail; press the "OK" button. Fig. 2.
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4. As shown in Fig. 2.4, press the "Create Security File" button to key in a security code, and use the slider bar to adjust the speed of the IIC bus. Speed of IIC bus Security code Fig. 2.
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5. Fig 2.5 shows the settings for the ISP software's security code. It requires two command numbers, and the commands must be keyed in sequentially: 7C, 4C, 77. The command numbers and commands must be set by the user while coding. For more details, please refer to section 6 boot code of ISP. Fig. 2.
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Appendix C: Using ISP to program MCU 1. As shown in Fig. 3.1, select the MTV type first, load the binary or intel hex file to be programmed into the MCU, click "OK," then press the "RUN" button. Step 2 Step 1 Step 3 Step 4 Fig. 3.
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2. If the user changes the MTV type, the file must be loaded again, as the previously loaded file will be cleared. 3. CRC (cyclic redundancy check): the host can check the result in the CRC register instead of reading every byte in flash. The Check MCU CRC OK message indicates that the host has verified the program's CRC; see Fig.3.2. Fig. 3.
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6. Troubleshooting Flow Chart 1.
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2. Monitor cannot power on Can not power on monitor NO Change adaptor Check adaptor OK NO Repair open / short Check K/B Open / short? OK NO Change X1 / X2 Check crystal X1 / X2? OK NO Change failed part Check CN 6, R79 Pin 40 of U6? OK NO Fix power supply circuit Check power supply (12V, 5V, 2.5V & 3.
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3.
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4.
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5.
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6.
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7. Recommended Spare Parts List RECOMMENDED SPARE PARTS LIST (VX724-1 for "AUO V.8 (4ms) Panel") ViewSonic Model Number: VS10049 Rev: 1c Serial No. Prefix: PSN Item ECR/ECN ViewSonic P/N Ref.
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RECOMMENDED SPARE PARTS LIST (VX724-1 for "QDI (8ms) Panel") ViewSonic Model Number: VS10049 Rev: 1c Serial No. Prefix: PSN Description Item ECR/ECN ViewSonic P/N Ref.
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ViewSonic Model Number: VS10049-1W Rev: 1a BOM LIST (VX724-1 for "AUO Panel") Item 1 2 3 4 ViewSonic P/N #N/A B-00002839 #N/A #N/A Ref.
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Item 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 ViewSonic P/N M-SCW-0824-0813 #N/A CB-00002522 #N/A M-MS-0808-9399 A-PC-0106-0224 M-CV-0830-2540 M-CV-0830-2541 P-00000434 P-FM-0602-0875 P-FM-0602-0876 M-LB-0813-0747 #N/A M-LB-0813-0745 M-LB-0813-1042 P-00002838 DC-00002835 #N/A M-MS-0808-7399 M-LB-0813-1043 #N/A M-00002524 Ref.
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BOM LIST (VX724(QDI)) ViewSonic Model Number: VS10049 Rev: 1c Serial No. Prefix: PSN Item 1 2 3 ViewSonic P/N N/A N/A N/A Ref.
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8.
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EXPLODED PARTS LIST (VX724-1 for "AUO V.8 (4ms) Panel") ViewSonic Model Number: VS10049 Rev: 1a Item ViewSonic P/N Ref.
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EXPLODED PARTS LIST (VX724-1 for "QDI (8ms) Panel") ViewSonic Model Number: VS10049 Rev: 1c Serial No.
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Packing for shipping PACKING PART LIST (VX724-1) ViewSonic Model Number: VS10049 Rev: 1a Item ViewSonic P/N Ref. P/N 1 #N/A 1L7VDZAVS81 2 P-FM-0602-0875 HBL7V007011 3 P-FM-0602-0876 HBL7V008018 4 DC-00002835 HGL7V021019 5 A-PC-0106-0224 DM333181G97 6 P-00002838 HFL7V013015 7 M-LB-0813-1042 HCL7V019011 8 P-00000434 HAL7V005018 Location VX724 unit END CAP(L) END CAP(R) User manual & CD Power cord 3P 1.
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Packing procedure 1. Apply protective film to the display surface. 2. Put the monitor in EPE bag and seal the bag with tape. 3. Fit the cushions onto the monitor.
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4. Put the monitor into the carton and put all the accessories into the carton. Then close the carton. QSG Power cord Disassembling the monitor 1. Turn the monitor to face the back and remove the I/O cover. 2. Remove the stand back cover.
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3. Remove the four black hinge screws and separate the stand and head pieces. 4. Place the monitor face-down on a soft, flat, stable surface. 5. Separate the back cover and the front bezel.
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6. Remove the screws that fix the button board (B/B) and pull the cable out from the connector on the main board (M/B). 7. Remove the B/B. 8. Remove the screws on the PCB shield; remove the PCB shield.
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9. Remove the MB-LCD connector and loosen the four screws on the PCB holder. Screws 10. Separate the PCB holder from the panel.
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11. Loosen the four screws on the sides of the panel. 12. Remove the front bezel and panel.
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13. Remove the four hexagon screws beside the DVI & D-SUB connectors. 14. Remove the screws that fix the power board and main board.
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VX724-1 REALTEK RTD2523BLOCK DIAGRAM DDC-SCL;DDC-SDA 12V HSYNC ,VSYNC ANALOG RGB Triple ADC Interface AR AG AB 12V 5V AIC1563 3.3V AIC117ADJ 2.5V AIC1117ADJ DDC 24C02 Confidential - Do Not Copy POWER DVI 79 RTD2523 9. Block Diagram Crystal 11.
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ViewSonic Corporation 80 Confidential - Do Not Copy VX724-1
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Schematic Diagrams +3.3V+2.5V RSDS AND LVDS DVI SCALAR RTD2523 PC VGA ANALOG RGB POWER +3.3V LCDVCC AUDIO_MUTE AUDIO_VOLUME BRIGHTNESS INVCTRL MICRO-CONTROLLER MTV312 DDC AC 90-264V LCDPWR_ON3.3V +3.3V EEPROM 24LC16 LCD PANEL(17 19 RSDS AND LVDS) +3.3V +12V LCDPWR_ON12V 10. +12V POWER INVERTER AND AUDIO BOARD AIC 1563 +5.0V AIC1739 AIC1739 +2.5V +3.
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PAGE1 VGA INPUT L8 RED+IN 0/6 R24 DDC_SDA 16 CN2 11 DDC_SDA 12 IN-H 13 IN-V 14 VGA/NC DSUB_5V 75/6/F L9 GREEN+IN NC 0/6 R27 DSUB_5V GREEN-IN 100/6 C16 0.047u/6 R25 100/6 C18 0.047u/6 R26 100/6 C19 0.047u/6 R28 100/6 C21 0.047u/6 R29 100/6 C22 0.
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3DVCC R3DVCC 2.5DVCC 22uF/16V 3AVCC1 ADC_VCC L19 FEB_0805 C60 0.1u/6 B+ BSOG G+ GR+ R- BLUE+ BLUESOGIN GREEN+ GREENRED+ RED- + C61 0.1u/6 3AVCC1 C58 0.1u/6 0.1u/6 C53 + C57 0.1u/6 L15 FEB_0805 C56 0.1u/6 C54 Near to Chip C63 0.1u/6 3AVCC2 TMDS_AVCC C55 0.1u/6 3AVCC2 4.7K/6 C59 22uF/16V R58 RX2P RX2N RX1P RX1N RX0P RX0N RXCP RXCN TX2+ TX2TX1+ TX1TX0+ TX0TXC+ TXC- C62 0.1u/6 NC 1K/6 C64 0.1u/6 ADC_GND C43.C44.C45盡量靠近IC AHS AVS C46 10uF/16V C45 0.1u/6 C44 0.1u/6 C43 0.
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Reset circuit VCPU R78 R165 B E 10K/6 10K/6 4.7K/6 VCPU Q13 4.7K/6 2N3906 3 C86 NC/1U/16V 3AVCC1 2 R106 NC/82K/6 3AVCC1 R147 4.7K/6 R84 33K/6 R85 33K/6 R93 R91 33K/6 3 LED_R 3DVCC R87 33K/6 NC/2N3906 2N3906 2 R90 33K/6 R82 1 2 Q12 LED_G R89 33K/6 1 Q20 R88 33K/6 NC/100K/6 C103 NC/1U/16V R79 1 NC/ 1N4148 C 3 D32 3DVCC C81 0.1U/6 C82 0.1U/6 C80 0.1U/6 C79 0.1U/6 1K/6 1K/6 1K/6 1K/6 1K/6 1K/6 1K/6 220/6 220/6 R163 Y2 11.
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5DVCC 5DVCC VCC12 PANEL_5_12VCC L21 3DVCC Q8 SI2301DS 2 R67 PANEL_5_12VCC 2 C67 C68 1 2200P/6 R68 C69 C70 10K/6 0.1U/6 100U/16V C71 R75 PANEL_3VCC C72 NC/2200P/6 NC/2200P/6 R76 C73 C74 NC/10K/6 NC/0.
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U1 L1 3 VIN 1 ADJ/GND VOUT 2 R1 200/6 1% C3 10uF/8 AIC1084/TO252 C2 0.1uF/6 C1 10uF/8 CX000800000/8 0.8A Max 3.3V R2 C4 0.
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JP2 TXO0TXO1TXO2- 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 TXOCTXO3TXE0TXE1TXE2TXECTXE3- JP1 CONFIG SETTING TAB_SEL_1 TAB_SEL_2 SDRAM1_3.
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5DVCC 3 C 5DVCC 1SS355 + EC1 10uF/16V C1 0.1u/6 D1 2 C2 1u/6 1 E 3DVCC U1 AIC1117CY 3 VIN VOUT 2 2200p/6 D3 GND 12V 2 4 6 8 1 GND RTD 3DVCC ADC_ 3AVCC RTD 3PVCC R8 LVDS_3AVCC R10 0/6 0.1u/6 10uF/16V R3 200/6 1% EC3 C3 U10 與 U3 共layout 2004/4/16 3DVCC 2.5DVCC U10 3 VIN 2 GND 3AVCC1 L29 3PVCC FEB/1206/NC VOUT 1 2.5DVCC RTD 2.5DVCC AIC1739/NC 3AVCC2 10K/6 Q3 MMST3906 R13 1K/6 VRMT 3.3V-->2.5V regulator for 3.
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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.