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Service Guide Version and Revision Version Release Date Revision History TPV model TK7SMHDBW7AYBC/ Apr.-3-2008 Initial Release TK7SMHDKW7AYBC...
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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.
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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.
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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.
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...
50k hours or more. Panel Signal Interface Sync Type Color Temp User Adjust Speaker Headphone Jack Microphone Jack USB Hub Tilt / Swivel Chart of B243W LTM240CT01 801(A01) D-Sub 15-pin/ DVI 24-pin Separate / Compatible Support DDC2B Yes / Yes Chapter 1...
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...
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 (H)160 (V) 160(Type) Display Colors 16.7M Display mode 1920 x 1200 @60Hz ON Mode EPA ENERGY STAR®...
LCD Panel Specification LTM240CT01 is a color active matrix liquid crystal display (LCD) that uses amorphous silicon TFT (Thin Film Transistor) as switching components. This model is composed of a TFT LCD panel, a driver circuit and a back light unit.
Monitor Block Diagram The LCD MONITOR will contain a main board, an inverter board, an adapter board, a key board and a USB 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.
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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.
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. C: Connect the digital cable (only for dual-input models). (1) Make sure both the monitor and computer are switched off.
Attaching/Removing The Base Install: Align the base with the stand and push the base towards the top of the monitor, and then rotate the base clockwise. Tighten the screw clockwise. Remove: Reverse the steps to remove the base. Screen Position Adjustment In order to optimize the best viewing position, you can adjust the height/tilt/swivel/pivot of the monitor.
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Tilt Please see the illustration below for an example of the tilt range. Swivel With the built-in pedestal, you can swivel the monitor for the most comfortable viewing angle. Monitor Pivot Adjust height to the top position before rotation the monitor. Rotate clockwise until the monitor stops at 90°.
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. •...
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.
Machine Disassembly This chapter contains step-by-step procedures on how to disassemble the monitor for maintenance. Disassembly Procedure 1. Remove the hinge assembly as the following indicator. (Fig 1~2) Fig 1 Fig 2 Chapter 3...
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2. Remove the back cover, bezel and remove the screws remarked in red in order to remove the main board below. (Fig 3~Fig 4) Fig 3 Fig 4 3. Release the shield inverter and lamp connectors. (Fig 5-7) Fig 5 Fig 6 Fig 7...
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4. Remove the screws remarked in red and release the connector remarked in blue to remove the USB board.(Fig 8) Fig 8 5. Remove the screws to remove the panel. Pay attention to the LVDS cable.(Fig 9-10) Fig 9 Fig 10...
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6. Remove the screws to remove the main board, adapter board and inverter board.( Fig 11) Fig 11...
Troubleshooting This chapter provides troubleshooting information for the B243W: 1. No Power 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 U701, U702 Pin2=3.3V, U703 Pin1=1.8V...
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2. No Picture (LED is orange) No picture The button if under control Measure U701, U702 Pin2=3.3V, U703 Pin1=1.8V Check HS/VS from CN402 is normal Replace U403 X401 oscillate waveform is normal Check reset circuit of U407 is normal Replace U407 Replace U701,U702, U703...
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3. White screen White screen Measure Q707 base is low level? Check Q705,Q706,Q707 broken or CN703 solder? Replace PANEL Check U403/U407 Check Correspondent component. Replace U403/U407 X402 oscillate waveform is normal Replace X402...
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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...
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5. Adapter/Inverter Board No power No power Check CN902 Pin3~7 = 24 V Check AC line volt 120V or 220V Check the voltage of C914 (+) Check start voltage for the Pin6 of IC903 Repearing the start voltage Check T901,T902,IC901,IC902,Q901,Q902 Check D953, IC955,IC954,C964,C965,C966,IC950,IC953,ZD950,Q950 Check Interface board Check bridge retified circuit...
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W/LED No Backlight Check the 24V voltage input Check ON/OFF signal Check the voltage of IC801 pin2 Check the pin1&15 of IC801 have PWM wave Check Q802,Q804,Q808,Q809 Drain wave Check the output of PT801~PT812 Check connecter & lamp Check the adapter Check Interface board Change Q805.Q806 or Q807 Replace IC801...
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: B243W)