LG L246WH-SF
Contents
1. AUTO IMAGE ADJUSTMENT When adjusting your display settings always press the OK AUTO button before entering the On Screen Display OSD This will automatically adjust your display image to the ideal settings for the current screen resolution size display mode The best display mode is 1920 x 1200 60Hz Use this button to turn the display on or off O Power Indicator This Indicator lights up blue when the display operates normally On Mode If the display is in Sleep Mode Energy Saving this indicator color changes to amber On Screen Display OSD Control Adjustment Screen Adjustment Making adjustments to the image size position and operating parameters of the display is quick and easy with the On Screen Display Control system A short example is given below to familiarize you with the use of the controls The following section is an outline of the available adjustments and selections you can make using the OSD Note Allow the display to stabilize for at least 30 minutes before making image adjustments To make adjustments in the On Screen Display follow these steps OK AUTO MENU AW OK AUTO AV 4 gt of AW lt p OK AUTO MENU MENU gt PIP Pops up Move where Move where Satai the menu you want to aus you want to Select a Adjust the status A P the menu screen adjust adjust menu icon J screen Press the MENU Button then the main menu of the OSD appears To access a c2. Parts Rear View O OMPONENT peal Wom E AC IN Connector Connect the Power Cord DC OUT Jack HDMI DVI Signal Connector EJ COMPONENT Input Terminal D SUB Analogue Signal Connector I Kensington Security Slot USB UP stream Port 1EA 8 USB DOWN stream Port 2EA 9 Audio out Jack Headset Earphone connecting terminal of the Speaker You can use the AUDIO OUT Jack by connecting earphones or a headset when using the HDMI configuration AUDIO OUT is only available with the HDMI input You cannot use it with D SUB or any other component E The Left Rear of the Monitor Connecting to External Devices When Connecting to your PC 1 Place the monitor in a convenient well ventilated location near your computer To adjust the height of your monitor unlock the stand lock on top of the stand a Connect the signal cable When attached tighten the thumbscrews to secure the connection Connect the power cord into a proper power outlet that is easily accessible and close to the display NOTE Varies according to model This is a simplified representation of the rear view 2 Power Cord 1 Signal Cable m This rear view represents a general model your display may differ from the view as shown m User must use shielded signal interface cables D sub 15 pin cable DVI cable with ferrite cores to maintain standard compliance for the product HDMI DVI D SUB S
3. the USB compliant peripherals to the downstream ports of the display USB downstream Port connect the cables from USB compliant peripherals such as keyboard mouse etc USB upstream Port To USB downstream port of the USB compliant PC or another hub cable 3 The monitor s USB terminal supports USB 2 0 and High Speed cables fF High Speed Full Speed Low Speed 480Mbps 1 5Mbps Power 2 5W 2 5W 2 5W Consumption Max each Port Max each Port Max each Port Note a To activate the USB hub function the display must be connected to a USB compliant PC OS or another hub with the USB cable enclosed a When connecting the USB cable check that the shape of the connector at the cable side matches the shape at the connecting side a Even if the display is in a power saving mode USB compliant devices will function when they are connected the USB ports both the upstream and downstream of the display D Connecting to External Devices To arrange the cables Connect the power cord and the signal cable as shown in the figure and then fix them to the cable holders 1 and 2 1 Please insert the cable holder1 2 Please put the power cord and into the hole the signal cable in the cable holder 1 3 Please put the power cord and the signal cable in the cable holder 2 While pressing the bottom of cable holder 2 with one hand pull the top of it with the other hand as
4. the following menu items can be adjusted On Off PIP Input To select an input signal for PIP Position To adjust the position of PIP screen On oft PIP Input 0 eee The following table is the available option to match the main screen and PIP screen PIP Main RGB HDMI Component PIP PC RGB x X X HDMI Component O O xX Troubleshooting Check the following before calling for service No image appears Is the power cord of the Check and see if the power cord is connected display connected properly to the power outlet Is the power on and the Adjust the brightness and the contrast power indicator blue or green Is the power indicator If the display is in power saving mode move the amber mouse or press any key on the keyboard to activate the screen e Turn on the PC Do you see an OUT e This message appear when the signal from the PC OF RANGE message video card is out of the diplay s horizontal or on the screen vertical frequency range See the Specifications section of this manual and configure the display again Do you see a CHECK This message appears when the signal cable SIGNAL CABLE between your PC and the display is not connected message on the Check the signal cable and try again screen Do you see a Controls locked message on the screen Do you see Controls e You can secure
5. your service technician for replacement Do not Open the Display There are no user serviceable components inside There is Dangerous High Voltage 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 a Use only a stand recommended by the manufacturer Do not drop an object on or apply impact to the product Do not throw any toys or objects on the product screen It can cause injury to humans problems to the product and damage to the display To Prevent Fire or Hazards Always tum the display OFF if you leave the room for more than a short period of time Never leave the display ON when leaving the house Keep children from dropping or pushing objects into the display s cabinet openings Some intemal parts carry hazardous voltage Do not add accessories that have not been designed for this display a When the display is to be left unattended for an extended period of time unplug it from the wall outlet If thunder and lightning are present do not touch the power cord and signal cable because it can be very dangerous It can cause electric shock Important Precautions On Installation Do not allow anything to rest upon or roll over the power cord and do not place the display where the power cord is subject to damage Do not use this display near water such as n
6. User s Guide e E L246WH L246WHX Make sure to read Important Precautions before using the product Keep the User s Guide CD in an accessible place for furture reference Sec the label attached on the product and give the information to your dealer when you ask for service Important Precautions This unit has been engineered and manufactured to ensure your personal safety however improper use may result in potential electrical shock or fire hazards In order to allow the proper operation of all safeguards incorporated in this display observe the following basic rules for its installation use and servicing On Safety Use only the power cord supplied with the unit If you use another power cord make sure that it is certified by the applicable national standards if not provided by the supplier If the power cable is faulty in any way please contact the manufacturer or the nearest authorized repair service provider for a replacement The power supply cord is used as the main disconnection device Ensure that the socket outlet is easily accessible after installation Operate the display only from a power source indicated in the specifications of this manual or listed on the display If you are not sure what type of power supply you have in your home consult with your dealer Overloaded AC outlets and extension cords are dangerous So are frayed power cords and broken plugs They may result in a shock or fire hazard Call
7. adjust the clearness of the screen ACC PICTURE HDMI Video Component input Selecting a factory setting colour set e Warm Slightly reddish white e Normal Slightly bluish white e Cool Slightly purplish white Not Soest P i i a If the EZ video setting in the Picture menu is set to Dynamic Standard M ild or Game the subsequent menus will be automatically set On Screen Display OSD Selection and Adjustment Adjusting Screen Colour E CSM PICTURE PC only e 6500K 9300K SRGB Selecting a factory setting colour set 6500K Slightly reddish white 9300K Slightly bluish white sRGB Set the screen color to fit the SRGB standard color e User Select this option to use the user defined settings PICTURE Contrast To adjust the contrast of the screen Brightness To adjust the brightness of the screen Red Green Blue Set your own colour levels On Screen Display OSD Selection and Adjustment Selecting the options Input Child lock Language Power indicator Transparency Reset DDC Cl SPECIAL Input Child lock Language Power indicator Transparency Reset DDC CI SECAR If you press the button once the following Input Signal Window will meee ies appear Select the signal type Power indicator you want using the W A button Child lock HDMI Transparency Reset DDC CI This feature can prevent unauthorized v
8. ay gt Settings and see if the frequency or the resolution were changed If yes readjust the video card to the recommended resolution Reasons for Recommending Optimal Resolution The aspect ratio is 16 10 If the input resolution is not 16 10 for instance 16 9 5 4 4 3 you might encounter problems such as blurred letters blurry screen cut off screen display or tilted screen The setting method can differ by computer and O S Operation System and resolution mentioned above may not be supported by the video card In this case please ask to the computer or the video card manufacturer Troubleshooting Display image is incorrect The screen color is e Check if the signal cable is properly connected mono or abnormal and use a screwdriver to fasten if necessary e Make sure the video card is properly inserted in the slot e Set the color setting higher than 24 bits true color in Control Panel Settings The screen blinks e Check if the screen is set to interlace mode and if yes change it to the recommended resolution Have you installed the display driver Have you installed the e Be sure to install the display driver from the display display driver driver CD or diskette that comes with your display Or you can also download the driver from our web site http www lge com Do you see an e Make sure to check if the video card supports Unr
9. d Base by turning the screw to the right Screw Turn the screw by using the screw handle 5 Lift and turn the monitor to face towards the front after the connection is made to the female part of the cable you re attaching 6 Take the screw out by turning to the left to separate the monitor and Stand Base Important This illustration depicts the general model of connection Your monitor may differ from the items shown in the picture Do not cany the product upside down holding only the stand base The product may fall and get damaged or injure your foot Connecting the Display Before setting up the monitor ensure that the power to the monitor the computer system and other attached devices is turned off Positioning your display 1 Adjust the position of the panel in various ways for maximum comfort a Tilt Range 5 20 Swivel 350 350 a Height Range maximum 3 94 inches 100 0mm Please be sure to remove the Locking pin to adjust the height Ergonomic You do not need to replace the Locking pin after it is removed to adjust its height aIt 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 a When adjusting the angle of the screen do not put your finger s in between the head of the monitor and the stand body You can hurt your finger s Name and function of the
10. de Amber Off Mode Off Installing the Wall mount plate This monitor satisfies the specifications of the Wall mount plate or the interchange device 1 After moving the product to face N downward make sure to place it on a soft cloth or a cushion to avoid surface damage 2 Separate the head and the stand with the use of a screwdriver 3 Install the Wall mount plate Wall mount plate Separate purchase This is stand type or wall mount type and is connectable with Wall mount plate Please refer to the installation guide for more details which is provided when Wall mount plate is purchased Kensington Security Slot Connected to a locking cable that can be purchased separately at most computer stores Digitally yours aus ic
11. e cq Wall outlet type Mac adapter For Apple Macintosh use a separate plug adapter is needed to change the 15 pin high density 3 row D sub VGA connector on the supplied cable to a 15 pin 2 row connector 4 Press d button on the front switch panel to turn the power on 5 Press the INPUT button on the front side of the monitor INPUT W 4A OK AUTO A When connecting with a HDMI DVI signal input cable e Select HDMI HDMI DVI digital signal Component When connecting with a D Sub signal cable e Select RGB D Sub analogue signal How to connect to two computers aca Connect the signal cables HDMI DVI and D Sub to each computer Press the INPUT button on the front side of the monitor Directly connect to a grounded power outlet on the wall or a power strip with a ground wire Connecting to External Devices When Watching DVD Video HDTV When connecting with a Component cable 1 Connect the Component cables and RCA to Stereo cables properly Connect the terminals to the sockets of the same color 2 Connect the power cord COMPONENT a ue D S CoN Monitor Speaker i i AUDIO IN l RCA Stereo cable Component Cable not included not included DVD VIDEO HDTV PRI DVD VIDEO HDTV 3 Press the INPUT button on the front side of the monitor INPUT INPUT Y A OK AUTO RGB When connecting with a Compone
12. ear 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 release of heat generated during operation If these openings are blocked built up heat can 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 a Place the display in a built in enclosure unless proper ventilation is provided a Cover the openings with cloth or other material a Place the display near or over a radiator or heat source Do not rub or strike the Active M atrix 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 cause some 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 for your LCD display If used under any mode except the recommended resolution some scaled or processed images may appear on the screen However this is characteristic of the fixed resolution LCD panel Leaving a fixed image on the screen for along time may cause damage to the screen and cause image bum in Make sure to use a screen saver on the product Bum in and related problems are not cover
13. ecognized monitor Plug amp Play function Plug amp Play VESA DDC monitor found message Display Sync Input Video Input Resolution Plug amp Play Power without USB Dimensions amp Weight Range Power Input Environmental Conditions Specifications L246WH 24 inches 61 3 cm Flat Panel Active matrix TFT LCD Anti glare coating Visible diagonal size 61 3 cm 0 270 mm pixel pitch Horizontal Freq Analog 30 83 kHz Automatic Digital 30 83 kHz Automatic Vertical Freq 56 75 Hz Automatic Input Form Separate Sync Composite SOG Sync On Green Digital HDCP Signal Input 15 pin D Sub Connector HDMI DVI connector Digital Component Input Form RGB Analog 0 7 Vp p 75 ohm Digital Max Analog VESA 1920 x 1200 60Hz Digital VESA 1920 x 1200 60Hz Recommend VESA 1920 x 1200 60Hz DDC 2B On Mode 85 W Typ Sleep Mode lt 1W Off Mode lt 1W With Stand Without Stand Width 56 00 cm 22 05 inches 56 00 cm 22 05 inches Height 44 45 cm 17 50 inches Min 37 70 cm 14 65 inches 54 45 cm 21 44 inches Max Depth 27 02 cm 10 64 inches 8 40 cm 3 31 inches Weight excl packing 9 6 kg 21 16 Ibs Tilt 5 20 Swivel 350 Height 100 mm 3 94 inches AC 100 240V 50 60Hz 1 2A Operating Conditions Temperature 10 C to 35 C Humidity 10 to 80 non Condensing Storage Conditions Temperature 20 C to 60 C Humidit
14. ed by the warranty on this product On Cleaning a Unplug the display before cleaning the face of the display screen a Use a slightly damp not wet cloth Do not use an aerosol directly on the display screen because over spraying may cause electrical shock On Repacking Do not throw away the carton and packing materials They make an ideal container in which to transport the unit When shipping the unit to another location repack it in its original material On Disposal a The fluorescent lamp used in this product contains a small amount of mercury a Do not dispose of this product with general household waste Disposal of this product must be carried out in accordance to the regulations of your local authority Connecting the Display Before setting up the monitor ensure that the power to the monitor the computer system and other attached devices is turned off Connecting the stand base or Removing the stand base 1 Place the monitor with its front facing downward on a cushion or soft cloth 2 Align the hooks on the Stand Body with the matching slots in the Stand Base 3 Insert the hooks into slots Stand Base Stand Body Hook Warning a The tape and locking pin may only be removed from those monitors equipped with a standing base when the base is pulled up Otherwise you may be injured by the protruding sections of the stand Connecting the Display 4 Attach the monitor to the Stan
15. iewing In order to lock the OSD screen adjustment set the Child lock tab to the On position In order to unlock it do the following Press and hold the MENU gt PIP Button for several seconds The message Controls locked should appear To choose the language in which the control names are displayed Use this function to set the power indicator on the front side of the product to On or Off To adjust the transparency of the OSD menu screen Use this function to reset the product to the factory default However language selection will not be initialized DDC C Display Data Channel Command Interface is communication protocol for communications between PC and monitor DDC CI makes it possible to adjust and setup detailed functions on PC instead of the monitor OSD Monitor can be adjusted with PC by connecting communication between PC and monitor when DDC CI is ON and monitor cannot be adjusted with PC because communication between PC and monitor is disconnected when DDC CI is OFF On Screen Display OSD Selection and Adjustment Screen Adjustment SCREEN ARC To select the image size of the screen lt HDMI Video Component input only gt lt HDMI PC RGB input only gt SCREEN SCREEN lt mn i 3 Auto This function is suitable for analogue signal input only This button is for the configure automatic adjustment of the screen Position Clock and Phase Clock This function is s
16. nt cable HOMI e Select Component oO Connecting to External Devices When Watching DVD Video HDTV Q When connecting with a HDMI DVI cable 1 Connect the HDMI DVI cables and RCA to Stereo cables properly Speaker not included lt RCA Stereo cable f not included HDMI DVI cable DVD VIDEO HDTV 2 Press the INPUT button at the front side of the monitor INPUT INPUT gt Y 4 OK AUTO TER When connecting with a HDMI DVI cable ponent e Select HDMI Connecting to External Devices Connecting the USB Universal Serial Bus Cable USB Universal Serial Bus is an innovation in connecting your different desktop peripherals conveniently to your computer By using the USB you will be able to connect your mouse keyboard and other peripherals to your display instead of having to connect them to your computer This will give you greater flexibility in setting up your system USB allows you to connect a chain of up to 120 devices on a single USB port and you can hot plug attach them while the computer is running or unplug them while maintaining the Plug and the Plug auto detection and configuration This display has an integrated BUS powered USB hub allowing up to 2 other USB devices to be attached to it 1 Connect the upstream port of the display to the downstream port of the USB compliant PC or another hub using the USB cable Computer must have a USB port 2 Connect
17. ontrol use the W A Buttons When the icon you want becomes highlighted press the OK AUTO Button 4 Use the V A lt a B Buttons to adjust the item to the desired level E Accept the changes by pressing the OK AUTO Button 6 Exit the OSD by pressing the MENU Button On Screen Display OSD Selection and Adjustment Q OSD On Screen Display menu Function Description Adjusting Screen Colour PICTURE Selecting the options SPECIAL Screen Adjustment Adjusting PIP Mode Multiple Screen Functions Note OSD On Screen Display lt The OSD function enables you to adjust the screen status conveniently since it Ss provides graphical presentation On Screen Display OSD Selection and Adjustment Adjusting Screen Colour E EZ Video Pa PAR PICTURE HDMI Video Component input The EZ Video function automatically adjusts the screen image quality depending on the AV usage environment e Dynamic Select this option to display with a sharp image e Standard The most general and natural screen display status e Mild Select this option to display with a mild image e Game Select this option to enjoy dynamic image when playing a game e User Select this option to use the user defined settings EI PICTURE Contrast EZVideo To adjust the contrast of the screen ace i Brightness To adjust the brightness of the screen Color To adjust the color to desired level Sharpness To
18. perating Conditions Conditions Temperature 10 C to 35 C Humidity 10 to 80 non Condensing Storage Conditions Temperature 20 C to 60 C Humidity 5 to 90 non Condensing Specifications L246WHX Stand Base Attached Detached O Power cord Wall outlet type or PC outlet type USB Standard USB 2 0 Self Power Data Rate Max 480 Mbps Power Consumption Max 2 5W x 2 Note a Information in this document is subject to change without notice PCINPUT Preset Modes Resolution Display Modes Resolution Horizontal Freq kHz Vertical Freq Hz 1 VGA 640 x 480 31 469 59 940 2 VESA 640 x 480 37 500 75 000 3 VESA 720 x 480 35 162 59 901 4 VGA 720 x 400 31 500 70 156 5 VESA 800 x 600 37 879 60 317 6 VESA 800 x 600 46 875 75 000 7 VESA 1024 x 768 48 363 60 004 8 VESA 1024 x 768 60 023 75 029 9 VESA 1152 x 864 67 500 75 000 10 VESA 1280 x 768 47 776 59 870 11 VESA 1280 x 768 60 289 74 893 12 VESA 1280 x 1024 63 981 60 020 13 VESA 1280 x 1024 79 976 75 025 14 VESA 1600 x 1200 75 000 60 000 15 VESA 1680 x 1050 64 674 59 883 16 VESA 1680 x 1050 65 290 60 454 17 VESA 1920 x 1200 74 038 59 950 SSS Se SS SSS SS SSS Recommend Mode HDMI Video INPUT Component Video INPUT Display Modes Horizontal Vertical Resolution Freq kHz Freq Hz Display Modes Horizontal Vertical Resolution Freq kHz Freq Hz 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 0 Indicator On Mode Blue Sleep Mo
19. shown in the picture Control Panel Functions Front Panel Controls I ner MEW ya mPP oxauo O INPUT __ MENU 1 INPUT Button Select the input signal INPUT W 4A OK AUTO REUT RGB 15 pin D SUB analogue signal HDMI HDMI DVI digital signal DTV SET TOP BOX Video DVD Component DTV SET TOP BOX Video DVD tel HDMI Component 2 MENU Button Use this button to enter or exit the On Screen Display Controls locked Controls unlocked This function allows you to lock the current control settings so that they cannot be inadvertently changed Press and hold the MENU PIP Button for several seconds The message Controls locked should appear You can unlock the OSD controls at any time by pushing the MENU gt PIP Button for several seconds The message Controls unlocked should appear Control Panel Functions ava Button e Use this button to directly control brightness and contrast of the PC signal RGB HDMI DVI gt PIP Button e gt PIP Picture In Picture Button The sub screen is switched on and off by pressing the button Use this button to select an icon or adjust the setting in the OSD screen Main screen OK AUTO Button Auto in progress For optimal display change resolution to 1920x1200 5 Power Button Use this button to enter a selection in the On Screen Display
20. the current control settings locked when you so that they cannot be inadvertently push MENU button changed You can unlock the OSD controls at any time by pushing the MENU P PIP button for several seconds the message Controls unlocked will appear Troubleshooting Display image is incorrect Display Position is e Press the OK AUTO button to automatically incorrect adjust your display image to the ideal setting If the results are unsatisfactory adjust the image position using the H position and V position icon in the on screen display On the screen e Press the OK AUTO button to automatically background vertical adjust your display image to the ideal setting bars or stripes are If the results are unsatisfactory decrease the visible vertical bars or stripes using the CLOCK icon in the on screen display Any horizontal noise e Press the OK AUTO button to automatically appearing in any adjust your display image to the ideal setting image or characters is lf the results are unsatisfactory decrease the not clearly portrayed horizontal bars using the PHASE icon in the on screen display e Check Control Panel gt Display gt Settings and adjust the display to the recommended resolution or adjust the display image to the ideal setting Set the color setting higher than 24 bits true color Important a Check Control Panel gt Displ
21. uitable for analogue signal input only to minimize any vertical bars or stripes visible on the screen background The horizontal screen size will also change Phase This function is suitable for analogue signal input only to adjust the focus of the display This item allows you to remove any horizontal noise and clear or sharpen the image of characters Position SCREEN This function is suitable for analogue signal l input only to adjust position of the screen Press the p gt PIP button to display the sub menu for position lt Left gt Right A Up Y Down Moving the screen position horizontally Moving the screen position vertically On Screen Display OSD Selection and Adjustment Screen Adjustment HDMI Video Used when it is connected with DVD or SET TOP BOX through HDMI If you want to connect VCR select VIDEO in this menu Otherwise you may see noise in the margin of the screen due to the difference in the screen size PC Used when it is connected with PC through HDMI If you want to connect PC select PC in this menu Otherwise the screen may be too large to support PC sub screen When the Interlace Signal is inputted at the RGB source input level the Auto Configure Clock Phase and Position menu can t be used On Screen Display OSD Selection and Adjustment Adjusting PIP Mode Multiple Screen Functions To adjust the sub screen PIP After selecting PIP in the PIP On Off menu
22. y 5 to 90 non Condensing Specifications Stand Base Attached Detached O Power cord Wall outlet type or PC outlet type USB Standard USB 2 0 Self Power Data Rate Max 480 Mbps Power Consumption Max 2 5W x 2 Note a Information in this document is subject to change without notice L246WH Specifications L246WHX Display 24 inches 61 3 cm Flat Panel Active matrix TFT LCD Anti glare coating Visible diagonal size 61 3 cm 0 270 mm pixel pitch Sync Input Horizontal Freq Analog 30 83 kHz Automatic Digital 30 83 KHz Automatic Vertical Freq 56 75 Hz Automatic Input Form Separate Sync Composite SOG Sync On Green Digital HDCP Signal Input 15 pin D Sub Connector sieaa HDMI DVI connector Digital Component Input Form RGB Analog 0 7 Vp p 75 ohm Digital Resolution Max Analog VESA 1920 x 1200 60Hz Digital VESA 1920 x 1200 60Hz Recommend VESA 1920 x 1200 60Hz Plug amp Play DDC 2B Power Consumption On Mode 85 W Typ without USB Sleep Mode lt 1W Off Mode lt 1W Dimensions With Stand Without Stand amp Weight Width 56 00 cm 22 05 inches 56 00 cm 22 05 inches Height 44 45 cm 17 50 inches Min 37 70 cm 14 65 inches 54 45 cm 21 44 inches Max Depth 27 02 cm 10 64 inches 8 40 cm 3 31 inches Weight excl packing 9 57 kg 21 10 Ibs Range Tilt 5 20 Swivel 350 Height 100 mm 3 94 inches Power Input AC 100 240V 50 60Hz 1 2A Environmental O
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