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Acer V203W Service Manual

Acer 20" computer monitor
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Acer V203W
Service Guide
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  Summary of Contents for Acer V203W

  • Page 1 Acer V203W Service Guide...
  • Page 2 Service Guide Version and Revision Version Release Date Revision History TPV model Mar.-20-2008 Initial Release TA7ANCD8W7AYNN...
  • Page 3 Any Acer Incorporated software described in this manual is sold or licensed "as is". Should the programs prove defective following their purchase, the buyer (and not Acer Incorporated, its distributor, or its dealer) assumes the entire cost of all necessary servicing, repair, and any incidental or consequential damages resulting from any defect in the software.
  • Page 4 DIFFERENT part number code to those given in the FRU list of this printed Service Guide. You MUST use the list provided by your regional Acer office to order FRU parts for repair and service of customer machines. Warning: (For FCC Certified Models) Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
  • Page 5 Precautions Do not use the monitor near water, e.g. near a bathtub, washbowl, kitchen sink, laundry tub, swimming pool or in a wet basement. Do not place the monitor on an unstable trolley, stand, or table. If the monitor falls, it can injure a person and cause serious damage to the appliance.
  • Page 6: Table Of Contents

    Chapter 1 Monitor Features Introduction Electrical Requirements LCD Monitor General Specification LCD Panel Specification Support Timing Monitor Block Diagram Main Board Diagram Software Flow chart Main Board Layout Installation Attaching/Removing the base Chapter 2 Operating Instructions External Controls Front Panel Controls eColor Management (OSD) How to Adjust a Setting LOGO...
  • Page 7: Chapter 1 Monitor Features

    Panel Signal Interface Sync Type Color Temp User Adjust Speaker Headphone Jack Microphone Jack USB Hub Tilt / Swivel Chart of V203W M201EW02 V80C SZ AUO D-Sub 15-pin Separate / Compatible Support DDC2B Not support Yes / No Chapter 1...
  • Page 8: Electrical Requirements

    Electrical Requirements Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light Viewing distance Warm up time Analog Input signal Control temperature Brightness control User contrast control Picture position and size Viewing angle AC Supply voltage Ambient temperature Humidity...
  • Page 9: Lcd Monitor General Specification

    LCD Monitor General Specification Driving system Active Display Area Pixel pitch LCD Panel Contrast Ratio Response time Luminance of White Separate Sync. Input H-Frequency V-Frequency Viewing angle CR=10: H:170 / V:170 ( typ) ;CR=5: H:176 / V:176 ( typ) Display Colors 16.7M Display mode 1680 x 1050 @60Hz...
  • Page 10: Lcd Panel Specification

    LCD Panel Specification This specification applies to the 20.1 inch-wide Color TFT-LCD Module M201EW02. The display supports the WSXGA+ (1680(H) x 1050(V)) screen format and 16.7M colors (RGB 6-bits+Hi-RFC data). All input signals are 2 Channel LVDS interface compatible. This module does not contain an inverter card for backlight.
  • Page 11 Electrical Characteristics TFT LCD Module-Power Specification Backlight Unit...
  • Page 12 Optical Specifications...
  • Page 13: Support Timing

    Support Timing Mode Resolution 640x480@60Hz 640x480@72Hz 640x480@75Hz 800x600@56Hz 800x600@60Hz SVGA 800x600@72Hz 800x600@75Hz 1024x768@60Hz 1024x768@70Hz 1024x768@75Hz VESA 1152x864@75Hz 1280x1024@60Hz 1280x1024@75Hz SXGA 1440x900@60Hz 1440x900@75Hz UXGA 1600x1200@60Hz WSXGA+ 1680x1050@60Hz Horizontal Nominal Sync Frequency Polarity Total +/- 0.5kHz 800 x 525 31.469 832 x 520 37.861 840 x 500 37.500...
  • Page 14: Monitor Block Diagram

    Monitor Block Diagram The LCD MONITOR will contain a main board, a power board, and key board which house the flat panel control logic, brightness control logic and DDC. The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage.
  • Page 15: Main Board Diagram

    Main Board Diagram Crystal (X401) 12MHz Scalar IC NT68625HMFG-128 JS (Include MCU ,ADC, OSD) (U401) Key Board Control (CN701) LCD Interface (CN101) H sync V sync D-Sub Connector (CN403)
  • Page 16: Software Flow Chart

    Software Flow Chart...
  • Page 17 Remark: 1) MCU initializes. 2) Is the EEPROM blank? 3) Program the EEPROM by default values. 4) Get the PWM value of brightness from EEPROM. 5) Is the power key pressed? 6) Clear all global flags. 7) Are the AUTO and SELECT keys pressed? 8) Enter factory mode.
  • Page 18: Main Board Layout

    Main Board Layout Symbol Description U402 AZ431AN-A-E1 U401 NT68625HMFG-128 JS U702 AP1117E33LA CN101 CONNECTOR Symbol Description CN701 WAFER 6PIN CN702 WAFER 9P RIGHT ANELE PITCH CN403 D-SUB 15PIN X401 NXS12.000AC30F-BT-2...
  • Page 19: Installation

    Installation To install the monitor on your host system, please follow the steps below: Steps 1 Connect the video cable A:Make sure both the monitor and computer are switched off. B:Connect the VGA video cable to the computer. 2 Connect the power cord Connect the power cord to the monitor, then to a properly grounded AC outlet.
  • Page 20: Attaching/Removing The Base

    Attaching/Removing the Base Attaching: Align the release button on the bottom of the monitor with the corresponding slots on the bottom of the base. Removing: Press the release button as indicated, then pull in the direction of the arrow to remove the base.
  • Page 21: Chapter 2 Operating Instructions

    Chapter 2 Operating Instructions Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the monitor. By changing these settings, the picture can be adjusted to your personal preferences. •...
  • Page 22: Ecolor Management (Osd)

    eColor Management (OSD)
  • Page 23: How To Adjust A Setting

    How to Adjust a Setting...
  • Page 24 Adjusting the picture...
  • Page 26: Osd Message

    OSD Message a. Outline b. The Description For OSD Message Item Auto Config When Analog signal input, if User Press Hot-Key “Auto”, will show this message, and the Please Wait monitor do the auto config function. Input Not When the Hsync Frequency, Vsync Frequency or Resolution is out of the monitor Supported support range, will show this message.
  • Page 27: Logo

    Logo When the monitor is power on, the LOGO will be showed in the center, and disappear slowly. How To Optimize The DOS-Mode Plug And Play Plug & Play DDC2B Feature This monitor is equipped with VESA DDC2B capabilities according to the VESA DDC STANDARD. It allows the monitor to inform the host system of its identity and, depending on the level of DDC used, communicate additional information about its display capabilities.
  • Page 28: Chapter 3 Machine Disassembly

    Machine Disassembly This chapter contains step-by-step procedures on how to disassemble the monitor for maintenance. Disassembly Procedure 1. Remove the cover hinge as the following indicator. (Fig 1) 2. Remove the screws as following indicate to release base stand. (Fig 2) Fig 1 Fig 2 Chapter 3...
  • Page 29 3. Remove the back cover and bezel. (Fig 3) 4. Remove the lamp connectors and the screw. (Fig 4-5) Fig 3 Fig 4 Fig 5...
  • Page 30 5. Remove the screws to remove the panel. Put attention to the LVDS cable.(Fig 6-7) 6. Remove the screws to remove the main board and power board.( Fig 8) Fig 6 Fig 7 Fig 8...
  • Page 31: Chapter 4 Troubleshooting

    Troubleshooting This chapter provides troubleshooting information for the V203W: 1. No Power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100-240 is normal Measure U702 Pin2=3.3V, Check if X401 oscillate...
  • Page 32 2. No Picture (LED is orange) No picture The button if under control Measure U702 Pin2=3.3V, X401 oscillate waveform is normal Check HS/VS from CN403 is normal Replace U401 X401 oscillate waveform is normal Check reset circuit of U401 is normal Replace U401 Replace U702 Replace X401...
  • Page 33 3. Panel Power Circuit White screen Measure Q705 base is high level? Check CN101 is solder and Q704,Q705 is OK? Check Correspondent component. Replace PANEL X401 oscillate waveform is normal Check reset circuit of U401 is normal Replace U401 Replace X401 Check Correspondent component.
  • Page 34 4. Key Board OSD is unstable or not working Is Key Pad Board connecting normally? Connect Key Board Replace Button Switch Is Button Switch normally? Replace Key Board Is Key Pad Board normally? Check Main Board...
  • Page 35 5. Power Board No power No power Check to CN902 Pin10,11 =14V and Pin6,7 = 5 V Check AC line volt 120V or 220V Check the voltage of C905(+) Check start voltage for the Pin2 of IC901 Check the auxiliary voltage is smaller than 20V Check T901,D906, D907, Q903,ZD921,ZD922,IC904,IC903 Check Interface board Change F901, Check BD901, L901, IC901...
  • Page 36 W/LED No Backlight Check the 14V voltage input Check ON/OFF signal Check IC801 pin12=12V? Check the pin9&10 of IC801 have PWM wave Check the resonant wave of pin3 & pin7 for T801 Check the output of T801,T802 Check connecter & lamp Check the adapter Check Interface board Change Q805.Q808 or Q810...
  • Page 37: Chapter 5 Connector Information

    Chapter 5 Connector Information The following figure shows the connector locations on the monitor:...
  • Page 38: Chapter 6 Fru (Field Replacement Unit) List

    NOTE: To scrap or to return the defective parts, you should follow the local government ordinance or regulations on how to dispose it properly, or follow the rules set by your regional Acer office on how to return it. Exploded Diagram (Model: V203W)
  • Page 39: Part List

    Part List Above picture show the description of the following component. Item Picture Description Base Main Frame Panel...
  • Page 40 Power Board Main Board...
  • Page 41: Chapter 7 Schematic Diagram

    Schematic Diagram Main Board VGA_VDD R428 4K7 1/16W 5% R424 VGA_SCL 100R 1/16W 5% ZD403 UDZSNP5.6B VGA_VDD R435 4K7 1/16W 5% R437 VGA_SDA 100R 1/16W 5% ZD405 UDZSNP5.6B R425 1K 1/16W 5% ZD402 VGA_5V UDZSNP5.6B ZD407 CN403 UDZSNP5.6B DB15 R430 1K 1/16W 5% VGA_DET 4 ZD401...
  • Page 42 TCLK1P TCLK1M TCLK2P TCLK2M R711 10K 1/16W 5% R713 10K 1/16W 5% Q705 PANEL_ON PMBS3904 C717 R714 0.1uF 16V 10K 1/16W 5% CN101 TCLK1M TCLK1P TCLK2M TCLK2P LCD-VDD LCD-VDD LCD-VDD CONN LCD-VDD FB703 120 OHM C715 22uF/16V C714 0.1uF 16V R712 10K 1/16W 5% Q704...
  • Page 43 DVDD PARTS U401 R444 C402 R445 0.1uF 16V C426 R422 R447 R448 CVDD18 ADC_VAA +1.8V C427 FB402 C403 C404 C426 C405 0.1uF 16V 0.1uF 16V 0.1uF 16V D401 BAV70 VGA_VDD MCU_VDD Q401 PMBS3904 VGA_5V R402 C406 change type E-C to 0603 11/23/07 1K 1/16W 5% C406 1uF 16V...
  • Page 44 CN702 10K 1/16W 5% R703 1K 1/16W 5% BL_DIM 4 PANEL_ID 4 VOLUME 4 MUTE 4 R704 C701 CONN 0.1uF 16V CN701 R706 100R 1/16W 5% R707 100R 1/16W 5% R708 1K 1/16W 5% R709 330R 1/16W 5% R701 100R 1/16W 5% CONN +3.3V R702...
  • Page 45 Power board...
  • Page 47: Key Board

    Key board CN001 LBADC1 LBADC2 POWER_Key LED_BLUE# LED_RED# C001 CONN MENU LBADC1 VOL- (GND) VOL+ LBADC2 AUTO ECOLOR (GND) CN001 CONNECTOR ECOLOR AUTO MENU VOL- ZD001 UDZSNP5.6B add ZD001 and ZD002 for ESD solution LED001 LED ZD002 UDZSNP5.6B LED_BLUE# LED_RED# C002 C003 C004...

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