LG Electronics USA D2341PY Part15 Subpart B-LCD Monitor User Manual W19 2243S T ENG

LG Electronics USA Part15 Subpart B-LCD Monitor W19 2243S T ENG

Contents

BEJD2341PY_User Manual 1

www.lg.comOWNER’S MANUAL3D MONITOR 3D MONITOR MODELD2341PPlease read this manual carefully before operating your set and retain it for future reference.ENGLISH
1This unit has been engineered and manufactured to ensure your personal safety,however improper use may result in potential electrical shock or fire hazards. Inorder to allow the proper operation of all safeguards incorporated in this display,observe the following basic rules for its installation, use, and servicing.On SafetyUse only the power cord supplied with the unit. In case you use another powercord, make sure that it is certified by the applicable national standards if not beingprovided by the supplier. If the power cable is faulty in any way, please contact themanufacturer or the nearest authorized repair service provider for a replacement.The power supply cord is used as the main disconnection device. Ensure that thesocket-outlet is easily accessible after installation.Operate the display only from a power source indicated in the specifications of thismanual or listed on the display. If you are not sure what type of power supply youhave in your home, consult with your dealer.Overloaded AC outlets and extension cords are dangerous. So are frayed powercords and broken plugs. They may result in a shock or fire hazard. Call yourservice technician for replacement.As long as this unit is connected to the AC wall outlet, it is not disconnected fromthe AC power source even if the unit is turned off.Do not Open the Display:There are no user serviceable components inside. There are Dangerous High Voltages inside, even when the power is OFF. Contact your dealer if the display is not operating properly.To Avoid Personal Injury :Do not place the display on a sloping shelf unless properly secured.Use only a stand recommended by the manufacturer.Do not drop an object on or apply impact to the product. Do not throw any toysor objects on the product screen. It can cause injury to human, problem to product and damage the display. To Prevent Fire or Hazards:Always turn the display OFF if you leave the room for more than a short periodof time. Never leave the display ON when leaving the house.Keep children from dropping or pushing objects into the display's cabinetopenings. Some internal parts carry hazardous voltages.Do not add accessories that have not been designed for this display.When the display is to be left unattended for an extended period of time, unplugit from the wall outlet.In the presence of thunder and lightning, never touch the power cord and signalcable because it can be very dangerous. It can cause electric shock. Important Precautions
2Important PrecautionsOn InstallationDo not allow anything to rest upon or roll over the power cord, and do not place thedisplay where the power cord is subject to damage.Do not use this display near water such as near a bathtub, washbowl, kitchen sink,laundry tub, in a wet basement, or near a swimming pool.Displays are provided with ventilation openings in the cabinet to allow the releaseof heat generated during operation. If these openings are blocked, built-up heatcan cause failures which may result in a fire hazard. Therefore, NEVER:Block the bottom ventilation slots by placing the display on a bed, sofa, rug, etc.Place the display in a built-in enclosure unless proper ventilation is provided.Cover the openings with cloth or other material.Place the display near or over a radiator or heat source.Do not rub or strike the Active Matrix LCD with anything hard as this may scratch,mar, or damage the Active Matrix LCD permanently.Do not press the LCD screen with your finger for a long time as this may causesome afterimages.Some dot defects may appear as Red, Green or Blue spots on the screen.However, this will have no impact or effect on the display performance. If possible, use the recommended resolution to obtain the best image quality foryour LCD display. If used under any mode except the recommended resolution,some scaled or processed images may appear on the screen. However, this ischaracteristic of the fixed-resolution LCD panel.Leaving a fixed image on the screen for a long time may cause damage to thescreen and cause image burn-in. Make sure to use a screen saver on the product. Burn-in and related problems are not covered by the warranty on this product. Do not shock or scratch the front and sides of the screen with metallic objects. Otherwise, it may cause damage to the screen. Make sure the panel faces forward and hold it with both hands to move. If you drop the product, the damaged product can cause electric shock or fire. Contact an authorized the service center for repair. Avoid high temperatures and humidity. For displays with glossy bezels the user should consider the placement of the display as the bezel may cause disturbing reflections from surrounding light and bright surfaces.
Important Precautions3On CleaningUnplug the display before cleaning the face of the display screen.Use a slightly damp (not wet) cloth. Do not use an aerosol directly on the displayscreen because over-spraying may cause electrical shock.When cleaning the product, unplug the power cord and scrub gently with a softcloth to prevent scratching. Do not clean with a wet cloth or spray water or otherliquids directly onto the product. An electric shock may occur. (Do not usechemicals such as benzene, paint thinners or alcohol) Spray water onto a soft cloth 2 to 4 times, and use it to clean the front frame;wipe in one direction only. Too much moisture may cause staining. On RepackingDo not throw away the carton and packing materials. They make an idealcontainer in which to transport the unit. When shipping the unit to anotherlocation, repack it in its original material.On Disposal Do not dispose of this product with general household waste.Disposal of this product must be carried out in accordance to the regulations ofyour local authority.
4Cautions When Viewing 3D ImagesCautions When Viewing 3D ImagesIf you view images in 3D mode for a long period of time (playing games, viewingmovies, etc.), you may feel dizzy. We strongly recommend you to take a restafter viewing images in 3D mode for one hour. (Feeling dizzy can varyindividually.)Please view 3D images within the optimal viewing angle and distance of theproduct. Otherwise, 3D images may look overlapped or not be displayedproperly in 3D.If you view 3D images too closely for a long period of time, this may causedizziness or blurred vision. Please keep the proper distance.If you are pregnant, a senior or have heart problems, we recommend you not toview 3D images. The 3D images can cause disorientation and confusion.The 3D images can cause nausea or vomiting in those under the influence ofalcohol. In this case, please do not view 3D images.Parents/guardians should monitor children’s viewing of 3D images because theymay be unable to handle emergency situations.Do not use the 3D glasses as regular glasses, sunglasses, or goggles. This maycause your vision to get worse.Do not keep the 3D glasses in an extremely hot or cold place. This may causedamage to the shape. Do not use the 3D glasses if they are damaged becausethis may cause your vision to get worse or dizziness.The lenses of the 3D glasses (polarizing film) are easily scratched. Use a soft andclean cloth when cleaning it. Do not use any chemicals.Cautions for SafetyWarning for photosensitivity seizure Some users may experience a seizure or other abnormal symptoms when theyare exposed to a flashing light or particular pattern from a video game or movie.Ifanyone in your family has a history of epilepsy or any kind of seizure, pleaseconsult with your doctor before viewing 3D images. If you feel any symptomslisted below when viewing 3D images, please stop viewing and consult with yourdoctor even if you do not have a medical history. * Symptoms : dizziness, blurred vision or facial tic, involuntary motion,twitching,blackout, confusion, disorientation and wrong decision.To prevent a photosensitivity seizure, please follow the instructionsbelow.1.Do not view 3D images when you are sleepy, tired, or sick.2.Do not view 3D images for a long period of time.3.Reduce the depth of the 3D image.
5Accessories!!! Thank for selecting LGE products !!! Please make sure the following items are included with yourmonitor. If any items are missing, contact your dealer.User's Guide/Cards Power Cord15-pin D-Sub Signal Cable(To set it up, this signal cable may beattached to this product beforeshipping out.)DVI-D Signal Cable(This feature is not available in allcountries.)NOTEThis accessories may look different from those shown here.User must use shielded signal interface cables (D-sub 15 pin cable, DVI-D cable) with ferritecores to maintain standard compliance for the product.3D Glasses(Normal type)3D Glasses(Clip type)TriDef 3D S/W Program CD
6Connecting the DisplayBefore setting up the monitor, ensure that the power to the monitor, the computersystem, and other attached devices is turned off.Connecting the stand 1. Place the monitor with its front facing downward on a soft cloth.2. Assemble the Stand Body into theproduct in the correct direction as shown inthe picture. Make sure you push it until youhear it “click”.3. Assemble the Stand Base(Front,Rear) into the Stand Body in thecorrect direction.4. Use a coin on the back of the stand base and turn the screw clockwise to tighten.5. Once assembled take the monitor up carefully and face the front side.ImportantThis illustration depicts the general model of connection. Your monitor may differ fromthe items shown in the picture.Do not carry the product upside down holding only the stand base. The product mayfall and get damaged or injure your foot.Stand BodyHinge BodyStand BodyStand Base
7Connecting the DisplayDisassembling the stand1. Put a cushion or soft cloth on aflatsurface.3.Remove the Stand Body andStand Base from product incorrect direction as shown in thepicture.2. Place the monitor face Down on thecushion or soft cloth.4. Use a coin on the back of the StandBase and turn the screw anticlock-wise to loosen.
8Connecting the DisplayBefore setting up the monitor, ensure that the power to the monitor,the computer system, and other attached devices is turned off. Positioning your display-After installation, adjust the angle as shown below. 1. Adjust the position of the panel in various ways for maximum comfort.Tilt Range : -5˚ to 15˚ERGONOMICIt is recommended that in order to maintain an ergonomic and comfortable viewing position,the forward tilt angle of the monitor should not exceed 5 degrees.Do not touch or press the screen whenadjusting the angle of the monitor. When adjusting the angle of the screen, donot put your finger(s) in between the head ofthe monitor and the stand body. You canhurt your finger(s).
9NOTE‘ Self Image Setting Function’? This function provides the user with optimal displaysettings.When the user connects the monitor for the first time, this function automatically adjuststhe display to optimal settings for individual input signals. ‘AUTO’ Function? When you encounter problems such as blurry screen, blurred letters, screenflicker or tilted screen while using the device or after changing screen resolution, press theAUTO function button to improve resolution. ABConnect DVI-D(Digital signal) CableConnect D-sub(Analog signal) Cable 1. Before setting up the monitor, ensure that the power to the monitor, the computersystem, and other attached devices is turned off. 2.Connect signal input cable and power cord in order, then tighten the screwof the signal cable. Connecting with the PC 12Wall-outlet typeMac adapter : For Apple Macintosh use, aseparate plug adapter is needed to change the15 pin high density (3 row) D-sub VGAconnector on the supplied cable to a 15 pin 2row connector.When using a D-Sub signal input cable connectorfor Macintosh Varies according to model.NOTE This is a simplified representation of the rear view.This rear view represents a general model; your display may differ from the view as shown.3. Press the power button on the front panel to turn the power on. When monitor power isturned on, the 'Self Image Setting Function' is executed automatically.(Only Analog Mode)Power ButtonConnect the signal input cable and tightenit up by turning in the direction of the arrow as shown in the figure.Connecting the Display
10Control Panel FunctionsFront Panel ControlsMENU ButtonOSD LOCKED/UNLOCKEDThis function allows you to lock the current controlsettings, so that they cannot be inadvertently changed.Press and hold the MENU button for several seconds.The message "OSD LOCKED" should appear.You can unlock the OSD controls at any time by pushingthe MENU button for several seconds. The message"OSD UNLOCKED" should appear.
11Control Panel FunctionsAUTO ButtonAUTO IMAGE ADJUSTMENTWhen adjusting your display settings, always press theAUTO button on the MONITOR SETUP OSD. (OnlyAnalog Mode)This will automatically adjust your display image to theideal settings for the current screen resolution size(display mode).The best display mode is1920 x 1080INPUT ButtonUse this button to turn the display on or off.The power indicator stays blue if the display is runningproperly (On Mode). If the display is in Sleep Mode , thepower indicator is blinking blue. Power Button &Power IndicatorWhen two input signals are connected, you can select theinput signal (D-SUB/DVI) you want. When only one signalis connected, it is automatically detected. The defaultsetting is D-Sub. (SOURCE Hot key)Exit the OSD(On Screen Display).EXIT Button SUPER ENERGYSAVING ButtonUse this button to enter SUPER ENERGY SAVINGmenu.For more information, refer to page 17.
12On Screen Display (OSD) Control AdjustmentScreen AdjustmentMaking adjustments to the image size, position and operatingparameters of the display is quick and easy with the On ScreenDisplay Control system. A short example is given below to familiarize you with the use of thecontrols. The following section is an outline of the availableadjustments and selections you can make using the OSD.To make adjustments in the On Screen Display, follow these steps:Press the discretionary Button, then the main menu of the OSD appears.To access a control, use the corresponding Buttons.Use the / / Buttons to adjust the image to the desired level. Use the Button to select other sub-menu items.Press the EXIT Button to exit from the OSD. 1234
On Screen Display (OSD) Control Adjustment13The following table indicates all the On Screen Display control, adjustment,and setting menus.: D-SUB(Analog signal) input : DVI-D(Digital signal) inputDSUBDVI-DTo customize the screen statusfor a user's operatingenvironmentTo adjust the contrast of thescreen To customize the color of thescreenMENU To adjust the brightness of thescreenNOTE The order of icons may differ depending on the model (13 to 19).DSUBDVI-DTo adjust the image sizeMain menu Sub-menu Supported inputDescriptionBRIGHTNESSORIGINAL RATIOCOLOR TEMP (PRESET / USER)CONTRASTLANGUAGEFACTORY RESETSUPERENERGYSAVINGTurn on the SUPER ENERGYSAVING function.DSUBDVI-DTurn off the SUPER ENERGYSAVING function.Initialize the SUPER ENERGYSAVING and set to "OFF" mode.ONOFFRESET
14On Screen Display(OSD) Selection and Adjustment You were introduced to the procedure of selecting and adjusting an itemusing the OSD system. Listed below are the icons, icon names, and icondescriptions of the all items shown on the Menu.Sub-menusNOTEOSD (On Screen Display) menu languages on the monitor may differ from the manual.Menu NameIconsButtonTipPress the MENU Button, then the main menu of the OSD appears.ExitMoveRestart to select sub-menu
15On Screen Display(OSD) Selection and Adjustment Main menu Sub menu DescriptionTo adjust the brightness of the screen. Change the input image signal ratio tooriginal. WIDEORIGINALSwitch to full screen mode according toinput image signal. * This function works only if inputresolution is lower than monitor ratio(16:9).Exit : Exit, , : Move: Select another sub-menuPRESETSelect the screen color. • WARM: Set the screen to warm color temperature . • MEDIUM: Set the screen to medium color temperature.• COOL: Set the screen to cool colortemperature.REDSet your own red color levels.GREENSet your own green color levels.BLUESet your own blue color levels.USER
16On Screen Display(OSD) Selection and Adjustment Main menu DescriptionTo choose the language in which thecontrol names are displayed.Press the , buttons to resetimmediately.Restore all factory default settings except"LANGUAGE." To adjust the contrast of the screen.Exit : Exit, , : Move: Select another sub-menu
17On Screen Display(OSD) Selection and Adjustment You were introduced to the procedure of selecting and adjusting an itemusing the OSD system. Listed below are the icons, icon names, and icondescriptions of the all items shown on the Menu.Sub-menusNOTEOSD (On Screen Display) menu languages on the monitor may differ from the manual.Menu NameIconsButtonTipPress the SUPER ENERGY SAVING Button, then the main menu of the OSD appears.ExitMoveRestart to select sub-menu
18On Screen Display(OSD) Selection and Adjustment Main menu Sub menu DescriptionExit : Exit, : Move: Select another sub-menuTurn on the SUPER ENERGYSAVING fuction.When current setting value isON,the SUPER SAVING color isgreen.Turn off the SUPER ENERGYSAVING function.Now the monitoris LED SAVING function.When current setting value isOFF,the SUPER SAVING color isgray.Clear the TOTAL POWERREDUCTION and TOTAL CO2REDUCTION values.OK : SelectTOTAL POWER REDUCTION : How much power is saved during using the monitor.TOTAL CO2 REDUCTION : Change the TOTAL POWER REDUCTION to CO2.ONOFFRESET
19On Screen Display(OSD) Selection and AdjustmentSUPER SAVINGLED SAVING51223 inchSaving Data depends on the Panel. So,those values should be different fromeach panel and panel vendor.LG accumulate those values using integrated function with 10 minutesbroadcast video signal.LED Saving means that how much power can be saved using WLED Panelinstead of CCFL panel.SUPER Saving means that how much power can be more saved usingSUPER ENERGY SAVING function. NOTESAVING DATA(W/h):
20TroubleshootingNo image appearsCheck the following before calling for service.No image appearsDo you see a "OSD LOCKED" message on the screen?●Is the power cord of thedisplay connected?●Is the power indicatorlight on?●Is the power indicatorflickering?●Do you see an "OUT OFRANGE" message onthe screen?●Do you see a "CHECKSIGNAL CABLE"message on thescreen?• Check and see if the power cord is connectedproperly to the power outlet.• Press the Power button.• If the display is in power saving mode, try movingthe mouse or pressing any key on the keyboard tobring up the screen.• Try to turn on the PC.• This message appears when the signal from thePC (video card) is out of horizontal or verticalfrequency range of the display. See the'Specifications' section of this manual andconfigure your display again.• This message appears when the signal cablebetween your PC and your display is notconnected. Check the signal cable and try again.• You can secure the current control settings,so that they cannot be inadvertently changed.You can unlock the OSD controls at any timeby pushing the MENU button for severalseconds: the message “OSD UNLOCKED” will appear.●Do you see “OSDLOCKED” when youpush MENU button?
21TroubleshootingDisplay image is incorrect●Display Position isincorrect.●On the screenbackground, verticalbars or stripes arevisible.●Any horizontal noiseappearing in anyimage or charactersare not clearlyportrayed.• Press the AUTO button to automatically adjustyour display image to the ideal setting. • Press the AUTO button to automatically adjustyour display image to the ideal setting.• Press the AUTO button to automatically adjustyour display image to the ideal setting.• Check Control Panel --> Display --> Settingsand adjust the display to the recommendedresolution or adjust the display image to the idealsetting. Set the color setting higher than 24 bits(true color).IMPORTANTCheck Control Panel --> Display --> Settings and see if the frequency or theresolution were changed. If yes, readjust the video card to the recommendresolution.If the recommended resolution (optimal resolution) is not selected, letters may beblurred and the screen may be dimmed, truncated or biased. Make sure to selectthe recommend resolution. The setting method can differ by computer and O/S (Operation System), and resolution mentioned above may not be supported by the video card performance. In this case, please ask to the computer or the video card manufacturer.
22Display image is incorrect●The screen color ismono or abnormal.●The screen blinks.• Check if the signal cable is properly connectedand use a screwdriver to fasten if necessary.• Make sure the video card is properly inserted inthe slot.• Set the color setting higher than 24 bits (true color)at Control Panel - Settings.• Check if the screen is set to interlace mode and ifyes, change it to the recommend resolution.Do you see an "Unrecognized monitor, Plug&Play (VESADDC) monitor found" message?●Have you installed thedisplay driver?• Be sure to install the display driver from the displaydriver CD (or diskette) that comes with yourdisplay. Or, you can also download the driver fromour web site: http://www.lg.com.• Make sure to check if the video card supportsPlug&Play function.Troubleshooting
I can see a swirling oil-like pattern on the monitor when themonitor is turned off.I cannot see 3D images properly.23Troubleshooting When Using 3D Mode• This is caused by the interference of external light in the air layer between the LCD surface and 3D filter. The pattern becomes almost invisible when you turn on the power again.●If you are not using theglasses provided withthe monitor,●If you view 3D imagesoutside the optimalviewing angle ordistance,●If you have not set theresolution, • When you view 3D images with this monitor, itis very important that you use the glassesprovided with the monitor. The glasses aredesigned to compensate optically for the 3Dfilter attached to the surface of the monitor. Ifyou wear third-party glasses, you may not see3D images properly on the monitor.• The optimal viewing angle of the monitor isbetween -4° and 8° in vertical direction whilebetween 85° and -85° in horizontal direction;the optimal viewing distance is between 50 cmto 70 cm from the monitor. When you view 3Dimages outside the optimal viewing angle orviewing distance, the images may lookoverlapped or not be displayed properly in 3D.• Please set the resolution of the monitor to themaximum (1920 x 1080 @ 60 Hz) in the displaysettings. The 3D software may not workproperly if the resolution is not set to themaximum.
24Troubleshooting When Using 3D ModeI cannot see 3D images properly.●If the images that yourleft and right eyes seeare reversed,●I cannot see 3D but only2D images.●If the ‘TriDef Support’couldn’t work properly • The stripe images in the odd-numbered linesare the ones that your right eye sees on themonitor. If you only see the stripe images, not3D images, set the images for your right eye tobe displayed in the odd-numbered lines bychanging the player or viewer option of the 3Dsoftware.• This monitor works both in 2D and 3D mode.You can view a video in 3D if it is made in 3D. Ifyou try to view 2D images in 3D, they might notbe displayed properly or you may experiencepoor picture quality.• The recommended system requirements on PCto run the ‘TriDef Support’ :-Intel® Core 2 Duo or Athlon™ 64 X2 Dual-Core CPU 1GB RAM;-NVIDIA® GeForce 8600GT or ATI X1650 XTor better 100MB free disk space;-Windows® XP (SP2) (32 bit only), Windows®Vista (32 bit only) or Windows®7 (32 or 64 bit);-DirectX 9.0c compatible sound card;-DVD-ROM drive,A supported DVD Decoder(only when it is used);-Network card(not necessary);You can check your PC first.
25Specifications 58.4 cm (23 inch) Flat Panel Active matrix-TFT LCD Anti-Glare coating Visible diagonal size : 58.4 cm0.265 mm x 0.265 mm (Pixel pitch)DisplayHorizontal Freq. 30 kHz to 83 kHz (Automatic)Vertical Freq. 56 Hz to 75 Hz (Automatic)Input Form Separate Sync.DigitalSync InputSignal Input 15 pin D-Sub ConnectorDVI-D Connector (Digital)Input Form RGB Analog (0.7 Vp-p/ 75 ohm), DigitalVideo InputMax VESA 1920 x 1080 @ 60 HzRecommend VESA 1920 x 1080 @ 60 HzResolutionPlug&PlayOn Mode :38 W(Typ.)Sleep Mode < 0.3 WOff Mode < 0.3 WPowerConsumptionOperating ConditionsTemperature 10 ˚C to 35 ˚CHumidity 10 % to 80 % non-CondensingStorage ConditionsTemperature -20 ˚C to 60 ˚CHumidity 5 % to 90 % non-CondensingEnvironmental ConditionsWith StandWidth 54.6 cm ( 21.49 inch ) Height 40.7 cm ( 16.02 inch ) Depth 20.2 cm ( 7.95 inch )Weight(excl. packing) 3.5 kg ( 7.71 lb )Dimensions& WeightTilt : -5˚ to 15˚RangeAC 100-240 V~ 50 / 60 Hz 1.0 A Power InputAttached ( ), Detached ( O )Stand Base Wall-outlet typePower cord Without StandWidth 54.6 cm ( 21.49 inch ) Height 34.2 cm ( 13.46 inch ) Depth 5.7 cm ( 2.24 inch )NOTEInformation in this document is subject to change without notice.DDC 2B(Analog,Digital)
26SpecificationsPreset Modes (Resolution)IndicatorOn ModeSleep ModeOff ModeBlueBlue BlinkingOffLED ColorMODEDisplay Modes (Resolution) Horizontal Freq. (kHz) Vertical Freq. (Hz)*Recommend Mode1234567891011*12720 x 400640 x 480640 x 480800 x 600800 x 6001024 x 7681024 x 7681152 x 8641280 x 10241280 x 10241680 x 10501920 x 108031.46831.46937.50037.87946.87548.36360.12367.50063.98179.97665.29067.500706075607560757560756060Polarity(H/V)-/+-/--/-+/++/+-/-+/++/++/++/+-/++/+
271. Place the monitor with its front facing downward on a soft cloth.2. Remove the Stand Body and Stand Base from product in correct direction as shown inthe picture.Installing the Wall mount plateThis monitor satisfies the specifications of the Wall mount plate orthe interchange device.
28Installing the Wall mount plateWall mount plate(Separate purchase)This is stand-type or wall mount type and isconnectable with Wall mount plate.Please refer to the installation guide for moredetails, which is provided when Wall mountplate is purchased.Kensington Security SlotConnected to a locking cable that canbe purchased separately at mostcomputer stores.<Screw Mounting Interface Dimension>Hole spacing : 75 mm x 75 mm.3.Install the Wall mount plate.NOTEVESA compatible only with respect to screw mounting interface dimensions and mounting screw specificationsPlease use VESA standard as below.* 784.8 mm and under (30.9 inch) - Wall Mount Pad Thickness : 2.6 mm- Screw : 4.0 mm x Pitch 0.7 mm x Length 10 mm * 787.4 mm and above (31.0 inch) - Please use VESA standard wall mount pad and screws.
Make sure to read the Safety Precautions before using the product.Keep the OWNER’S MANUAL(CD) in an accessible place for furture reference.The model and serial number of the SET is located on the back or one side of the SET. Record it below should you ever need service.MODELSERIALAs an ENERGY STAR Partner LGE U. S. A.,Inc. has determined that this product meets the ENERGY STAR guidelines for energy efficiency.ENERGY STAR is a set of power-saving guidelines issued by the U.S.Environmental Protection Agency(EPA).

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