AOC LM740 User's Manual
Contents
1. Brightness amp Contrast Adjustment BRIGHTNESS CONTRAST 100 100 Tracking Adjustment TRACKING CLOCK oou PHASE qM Position Adjustment POSITION 50 50 11 Color Adjustment COLOR PRESET 9300K RED GREEN BLUE Other OTHER LANGUAGE OSD POSITION INFORMATION RESET PRESET MODE 1024X768 60HZ 8 Frequently Asked Questions The image is blurred how can get the best quality picture Read chapter 6 Setting the Display Resolution and select a graphics signal with the correct resolution and refresh rate Then read chapter 7 Adjusting the Monitor and make adjustments to the displayed image based on these instructions Have you used a VGA extension cable If so remove the extension cable and check the displayed image Has the image quality improved Optimise the image using the procedures in chapter 7 with the extension cable removed Reconnect the extension cable once the image has been optimised Depending on the characteristics and type of the extension cable some blurring or distortion may occur due to conduction losses of the extension cable You can minimise these losses by using an extension cable with better conduction quality or with a built in booster Does the blurring only occur at resolutions lower than the native maximum resolution Please read chapter 6 Setting the Display Resolution S2. 280 x 1 024 pixels 16 7 million 6bpp dithering 500 1 typical 270 cd m typical 12 ms typical 709 70 707 70 typical 0 264 mm Mains power switch Automatic image adjustment 6 OSD buttons Contrast Brightness Vert amp Hor Image Position Phase Pixel Clock Colour Management OSD Position OSD Language Status Indicator Input Signal Line Frequency Image Frequency Refresh Rate Video Signal Synchronization Signal Connection Physical Characteristics Power Management Maximum Power Consumption Power Saving Mode Operating Voltage Dimensions W x H x D Weight Temperature Operating Air Humidity Operating Regulatory Certification Safety EMI EMC Other 31 83kHz multi frequency 56 75Hz Within the parameters detailed in chapter 7 RGB analogue Positive polarity 0 7 Vpp 75 Ohm TTL separate composite TTL 15 pin mini D sub cable Energy Star 40 Watts 1 Watts Automatic switched mode power supply 100 240 V 50 60 Hz 381 x 426 x 199mm 4 0 kg 5 C 40 C 20 8596 CSA cULus TUV GS FCC CE
3. or distorted flashes or flickers e Check that the monitors signal cable is securely connected to the computer Read the chapters 6 and 7 of this manual then select the correct resolution refresh rate and make adjustments based on these instructions The image is displaced in one direction Use the Hor Position horizontal position adjustment in the Geometry menu of the monitors OSD to reposition the image Read the chapters 6 7 and then select the correct resolution refresh rate and make adjustments based on these instructions The display shows NO SIGNAL error message e Check that the monitors signal cable is securely connected to the computer monitor is in power saving mode Press a button on the computer keyboard or move the mouse to wake the computer If that does not help check that the VGA cable is securely plugged into the computer 14 The display shows OUT OF FREQUENCY error message Read chapter 6 Setting the Display Resolution and select a graphics signal with the correct resolution and refresh rate 9 Model Specifications AOC LM740 Display Characteristics Display Type Viewable Diagonal Area Native Maximum Resolution Colors Contrast Ratio Brightness Response Time Viewing Angle Horizontal Vertical Dot Pitch User Interface Controls On Screen Display Functions 17 active matrix Thin Film Transistor Liquid Crystal Display 43 18 cm 17 1
4. packed at the factory e Tokeepthe monitor looking new periodically clean the case 8 surface of the TFT LCD panel with a soft non fibrous cloth lightly dampened with a glass cleaner Do not use any paper products to clean the screen Never spay the glass cleaner directly on the monitor Never use strong solvents such as thinner benzene or abrasive cleaners since these will damage the case amp panel As a safety precaution always unplug the monitor before cleaning it Disclaimer Envision Peripherals Inc makes no representations or warranties either expressed or implied with respect to the contents hereof and specifically disclaims any warranties merchantability or fitness for any particular purpose Further Envision Peripherals Inc reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation to notify any person of such revision or changes Microsoft and Windows are registered trademarks of Microsoft Corporation All other trademarks remain the property of their respective owners Reference Information For future reference write the following information about your monitor in the space below The serial number is found on the back of the product or on the bottom of its stand Monitor Information Product Name LM740 Serial Number Date of Purchase Dealer Information Dealer Telephone Number Address vi Table of Contents 1 Important Safe
5. LM740 17 TFT LCD Monitor User s Manual By Envision Peripherals Inc www AOCmonitor com EYES VALUE FOR YOUR SAFETY Before operating the monitor please read this manual thoroughly This manual should be retained for future reference FCC Class B Radio Frequency Interference Statement 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 These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures 1 Reorient or relocate the receiving antenna 2 Increase the separation between the equipment and receiver 3 Connect the equipment into an outlet on a circuit different from that to which the receiver is connected 4 Consult the dealer or an experienced radio TV technician for help As an ENERGY STAR Partner E
6. elect a graphics signal that uses the monitor s the native resolution 1280 x 1024 pixels Why does the image look yellow blue or pink instead of showing the correct colours The most common cause of this problem is a loose VGA signal cable or connector Check that the cable is securely connected to the computer Check the VGA signal cable for damage If any pins are bent or broken off contact your dealer or an authorized Envision Peripherals Inc service agent No image is displayed what can do Check that the light LED next to the monitor s power button is lit and is green in colour If the LED is green press the MENU button on the monitor to access the On Screen Display If the message NON PHESET MODE appears there please read chapter 6 Setting the Display Resolution and reset the graphics card to one of the monitor s supported graphics signals Ifthe LED is orange the monitor is in power saving mode Press a button on the computer keyboard or move the mouse to wake the computer If that does not help check that the VGA cable is securely plugged into the computer Also check the pins of the VGA cable s connector If any pins are bent or broken off then contact your dealer see Chapter 10 for details Ifthe LED is not lit at all check that the monitor is plugged into the power supply mains socket and that the power switch is turned on Check that the monitor s power switch is also turned on The image is
7. lock Resolution Frequency Frequency Frequency Remark KHz MHz Hz Table 1 7 Adjusting the Monitor Picture Optimisation The easiest way to obtain an optimal picture is by using the Auto button for 2 seconds This only works reliably if the graphics adaptor is set to use one of the monitor s factory modes see Table 1 in the previous chapter and if you are displaying a suitable stationary image such as the windows desktop The monitor will remember the settings obtained by the auto calibration settings and use them whenever you turn the monitor on Note that you may need to readjust the monitor if it is connected to a different computer or if the computer s graphics adaptor is replaced If you are still not satisfied with the result you can enhance the image by using the monitor s manual adjustment functions OSD Adjustment Adjustments to the displayed image are made using the On Screen Display OSD and the buttons on the front of the monitor MENU A v 4 SELECT AUTO POWER from left to right Menu Enter OSD menu Enter submenus or select items within OSD menu A Move the selection cursor upwards within the OSD menu v Move the selection cursor downwards within the OSD menu 4 Adjust OSD functions Decrease Adjust OSD functions Increase SELECT Automatically adjust the vertical horizontal position pixel AUTO phase and pixel clock Exit OSD menu submenus POWER Power button OSD MENU
8. nitor the system will detect the monitor and automatically start the Add New Hardware wizard Just follow the prompts to load the native Plug and Play drivers Windows XP The first time you start Windows after connecting your new monitor Windows XP will automatically load the native Plug and Play drivers 6 Setting the Display Resolution Choosing The Best Resolution All Liquid Crystal Displays LCDs have a fixed resolution that is the same as the maximum resolution that may be displayed on the LCD In the case of the LM740 the LCD resolution is 1280 x 1024 pixels This is also known as the native resolution of the monitor Lower resolutions can be displayed at full screen through an interpolation circuit Because the lower resolution must be expanded the quality of the displayed image is not as good as that available when the native resolution is displayed For optimal performance from any LCD monitor you must use the monitor s native resolution If you are using Windows 95 98 2000 Me XP or NT 4 0 you can change the resolution as follows 1 Double click the Display icon in the control panel 2 Fromthe Display Properties dialogue box select the Settings tab There is a slider on the right hand side in the middle of the dialogue box that alters the displayed resolution Set the resolution to 1280 x 1024 3 ForWindows NT users only select a refresh rate of either 60Hz or 75 Hz and click Test A test pattern will be displa
9. nvision Peripherals Inc has determined that this product meets the ENERGY STAR guidelines for energy efficiency WARNING To prevent fire or shock hazard do not expose the monitor to rain or moisture Dangerously high voltages are present inside the monitor Do not open the cabinet Refer servicing to qualified personnel only 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 cart stand or table If the monitor falls it can injure a person and cause serious damage to the appliance Use only a cart or stand recommended by the manufacturer or sold with the monitor If you mount the monitor on a wall or shelf use a mounting kit approved by the manufacturer and follow the kit instructions e Slots and openings the back and bottom of the cabinet are provided for ventilation To ensure reliable operation of the monitor and to protect it from overheating be sure these openings are not blocked or covered Do not place the monitor on a bed sofa rug or similar surface Do not place the monitor near or over a radiator or heat register Do not place the monitor in a bookcase or cabinet unless proper ventilation is provided gt Donotinstall the monitor in a location near heat sources such as radiators or air ducts or in a place subject to direct sunlight or excessive dust or mechanical vibration
10. or shock e The monitor should be operated only from the type of power source indicated on the label If you are not sure of the type of power supplied to your home consult your dealer or local power company e The monitor is equipped with a three pronged grounded plug a plug with a third grounding pin This plug will fit only into a grounded power outlet as a safety feature If your outlet does not accommodate the three wire plug have an electrician install the correct outlet or ground the appliance safely Do not defeat the safety purpose of the grounded plug e Unplug the unit during a lightning storm or when it will not be used for long period of time This will protect the monitor from damage due to power surges gt Do not overload power strips and extension cords Overloading can result fire or electric shock e Never push any object into the slot on the monitor cabinet It could short circuit parts causing a fire or electric shock Never spill liquids on the monitor e Do not attempt to service the monitor by yourself Opening or removing covers can expose you to dangerous voltages and other hazards Please refer all servicing to qualified service personnel Do not pull or bend the power cable and signal cable or place the monitor or any heavy objects on the cables If the cables are damaged they may cause fire or electric shock e notice any abnormal phenomenon such as strange noise smoke or smells un
11. please contact your place of purchase immediately Monitor 1 pc 1 pc 1 pc Signal Cable Power Cable QSG Quick Start Guide Installation and Removal of the Base 1 Installation 2 Removal 1 pc CD User s Manual Lay the monitor face down on the edge of a table Make sure to use a soft padding to protect the screen of the monitor 4 Hardware Installation Your monitor is equipped with an automatic power supply with a voltage range from 100 to 240 Volts AC at a frequency of 50 to 60 Hz Make sure that your local power supply is within the supported range If you are unsure please contact your electricity supplier To install your AOC LM740 monitor 1 Make sure that the power to the computer and the power to the monitor are both turned off 2 Connect the D sub video cable from the monitor s VGA input connector to the VGA output connector of the computer s graphics card 3 Connect the power cord from the monitors power jack to an AC power Socket Please make sure that you have easy access to the power socket so you can disconnect the unit from the power socket should you need to 1 Power cable 2 D sub Video Cable 5 Windows driver Installation The AOC LM740 is fully Windows compatible so no specific windows drivers are required to be loaded Windows 98 ME and 2000 The first time you start Windows after connecting your new mo
12. plug the monitor and contact your dealer or the nearest service center immediately e When moving the monitor always turn off the switch unplug the monitor and disconnect the signal cable If the cables are not properly disconnected when moving the monitor it may cause fire or electric shock e Do not touch the plug with wet hands Pulling or inserting the plug with wet hands may cause electric shock disconnect the power cable or signal cable always pull the cable by the plug Never pull on the cable as this may cause fire or electric shock e To ensure satisfactory operation use the monitor only with UL listed computers which have appropriate configured receptacles marked between 100 240V AC Min 5A gt The wall socket shall be installed near the equipment and shall be easily accessible ERGONOMICS RECOMMENDATIONS Do not operate the monitor in a dark room or against a bright background For optimal viewing comfort the monitor should be just below eye level and 30 60 cm 16 24 inches away from your eyes When using the monitor over a prolonged period of time a ten minute break per hour is recommended GENERAL NOTES The following symptoms are normal with LCD monitor and do not indicate a problem e Due to the nature of the fluorescent light the screen may flicker during initial use Turn off the Power Switch and then turn it on again to make sure the flicker disappears e You may find slightly uneven brightne
13. roduct 4 Do not attempt to service this product yourself as opening or removing covers may expose you to dangerous voltages or other hazards 5 f any abnormal operation or accident such as dropping the unit occurs disconnect the monitor from the wall power outlet and contact qualified service personnel 2 Features Your AOC LM740 Monitor features SXGA 1280 x 1024 pixel Resolution LCD Panel High Brightness 270 cd m typical High Contrast Ratio 500 1 typical True Colour Display With FRC support for 16 7M colours the AOC LM740 monitor offers you better image quality High Quality Expansion With any resolution within the monitors specified range your AOC LM740 monitor can expand the image to full screen Auto Adjustment Function The auto adjustment key automatically optimises the image Plug and Play Compatibility with Microsoft Windows 95 98 2000 Me and XP Space Saving only 199 mm deep Light Weight only 4 0 kg Lower Power Consumption 40 W maximum during operation Power Saving Power management complies with EPA ENERGY STAR standard When the system is idle in monitor off mode the monitor automatically cuts its power consumption to less than 1 W On Screen Display Allows you to adjust all settings simply using on screen menus 3 Unpacking the Monitor Please check that the following items are included with your monitor If they are missing or damaged
14. ss on the screen depending on the desktop pattern you use gt The LCD panel used in this monitor is a very high technology product with 3 932 160 thin film transistors giving you fine picture details Occasionally a few non active pixels may appear on the screen as a fixed point of red green blue white or black Please note that this does not indicate a defective panel e Due to the nature of the LCD screen an after image of the previous screen may remain after switching the image when the same image has been displayed for a long time The monitor will slowly recover from this e CD monitors have a fixed size amp number of pixels Due to this an interpolation is necessary to operate the monitor in a resolution below its native resolution which may slightly de grade the display quality Therefore it is highly recommended to operate this monitor at its native resolution of 1280x1024 60Hz OTHER NOTES e screen surface is very soft Do not rub touch or tap the screen surface with sharp object such as pen or pencil This contact may scratch or damage the screen These damages are not covered under the warranty e Turn your computer OFF before installing your new monitor Refer to your computer manual for the proper shut down procedure Save the original shipping carton and packing materials as they will come in handy if you ever have to ship your monitor e Formaximum protection repackage your monitor as it was originally
15. the bottom of the dialogue box 4 Choose arefresh rate that corresponds with one of the factory modes from the table below 5 Click Apply and then OK twice Please Note e Graphics modes that are not listed in the table may not be supported For an optimal picture it is recommended that you choose a graphics mode with a resolution of 1280 x 1024 pixels that is listed in Table 1 on the next page Resolutions of 640 x 480 800 x 600 1024 x 768 and 1280 x 1024 pixels are supported The default setting may require some adjustment before use e The displayed image may show some distortion or noise that can be 7 caused by the signal from the VGA card if it does not correspond with the usual standard This is not however a problem with the monitor If it is still visible after using the Automatic adjustment you can usually improve the displayed image by manually adjusting the phase horizontal position and pixel frequency settings using the Geometry menu See Chapter 7 Adjusting the Monitor for more details e When you shut Windows down you may see interference lines on your screen This caused by the manner in which Windows controls the graphics card at this point and is normal with all LCD monitors e To extend the service life of the product we recommend that you use your computer s power management functions to turn the monitor off after extended idle periods Incoming display mode Input timing Horizontal Vertical Dot C
16. ty Instructions i 2 gp 2 3 Unpacking the Monitor 3 Installation and Removal of the Base 3 Hardware Installation 4 5 Windows driver installation 5 6 Setting the Display Resolution 6 Choosing the Best Resolution 6 Supported Graphics Modes and Refresh Rate SElECUO Neea 7 7 Adjusting the 9 12 8 Frequently Asked Questions 13 15 9 Specifications 16 17 vii 1 Important Safety Instructions Please read the following safety instructions before installing or cleaning your AOC monitor 1 Unplug the monitor s power cable from the wall outlet before cleaning Do not use liquid or aerosol cleaners Use a soft cloth to clean the monitor housing 2 Slots and openings on the back or top of the cabinet are provided for ventilation They must not be blocked or covered This product should never be placed near or over a radiator or other heat source or used in a built in installation unless proper ventilation is provided 3 Never push objects of any kind or spill liquid of any kind into this p
17. yed Make sure that there are no error messages shown by the monitor If an error message is displayed check the resolution and refresh rate settings or choose a different refresh rate 4 Click OK to close Display Properties Supported Graphics Modes and Refresh Rate Selection There is no need to choose the highest possible refresh rate when using an LCD monitor It is not technically possible for an LCD monitor to flicker Even at a refresh rate of 60 Hz you will get an absolutely flicker free image For best results it is important that you set the graphics adaptor to use one of the monitor s preset display modes shown in Table 1 on the next page Other graphics signals may be displayed poorly or not at all Note that the LM740 s preset modes correspond to VESA or Apple Macintosh standard graphics signals for these resolutions All recent models of graphics adaptor should be able to support these modes For the native resolution of 1280 x 1024 pixels for example refresh rates of 60 70 and 75 Hertz are supported With Windows 95 98 ME 2000 or XP you can change the refresh rate of the graphics signal as follows 1 Double click the Display icon in the control panel 2 From the Display Properties dialogue box select the Settings tab and click the Advanced Properties button 3 For Windows 95 98 and ME select the Adapter tab for 2000 and XP select the Monitor tab The refresh rate selection field is located in the centre at
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