LG Electronics 22CV241 manual Monitor Troubleshooting, Vertical Frequency, Horizontal Frequency

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42 Troubleshooting

Monitor Troubleshooting

 

The screen is blank

 

 

Is the product's power cord connected

•• Check if the power cord is connected correctly to a wall outlet.

correctly?

 

 

 

Is the power lamp on?

•• Check the Power button.

 

 

Is the power on and the power lamp is lit

•• Adjust the screen brightness and contrast.

either blue or green?

 

 

 

Is the power lamp blinking?

•• The power lamp blinks when the Internet Monitor is in standby

 

mode. When you press the power button, the monitor turns on

 

again within 2 to 3 seconds. Using a keyboard or mouse does

 

not exit standby mode.

 

 

Do you see the Monitor Frequency

•• This occurs when the signal sent by the PC (video card) exceeds

Range Exceeded message on the screen?

the range of horizontal or vertical frequency supported by the

 

monitor, so check the Product Specificationsof this manual

 

and change the settings.

 

 

Do you see the Check Signal Cable

•• This occurs when the signal cable between the PC and the

Connection message on the screen?

monitor is not correctly connected or unplugged, so check and

 

reconnect the signal cable.

 

 

 

There are afterimages on the screen

 

 

Are there afterimages on the screen even

•• Please be careful as displaying a fixed image on the screen for

after turning the monitor off?

a prolonged period of time can damage the monitor and leave

 

afterimages on the screen. Use screen savers to extend your

 

monitor’s working life.

 

 

yy NOTE

Vertical Frequency

yy A monitor screen must be refreshed dozens of times every second like a fluorescent lamp to allow users to see the picture.

yy This rate of screen refresh is called the Vertical Frequency or Refresh Rate, and is measured in Hz.

Horizontal Frequency

yy The time taken to display the full length of a single horizontal line on the screen is called the horizontal cycle. The Horizontal Frequency, measured in kHz, is the inverse of the horizontal cycle and shows the number of horizontal lines displayed on the screen every second.

The screen is unstable and shakes. / The screen shows ghost images.

Did you set the correct screen resolution? •• Refer to Using the Monitor > Setting the Resolution and set the screen to the recommended resolution.

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Contents LG Chromebase Contents Yy Using a non-compliant battery may cause a failure Using the Product CorrectlyReplacing Flash Memory Battery Instruction and NoticesImportant Safety Precautions InstallationUsing an AC Adapter Proper voltage An earth pin installed With your hands wet To disconnect the powerUse power outlets with Service centerUsing the LG Chromebase Only contents may inflict Psychological instability or Do not press or scratch Ensure the power is offTo clean the LCD screen Using this machineHigh Hole with any objectPorts Ensure that no child willAs a power switch With them regarding To fit the product Internal cleaningCord while using the LG For example, with blankCarrying the LG Chromebase Assembling and Preparing Product ComponentsInstallation Product Operating EnvironmentAssembling the Stand Assembling the Body with the Stand English Assembling the Stand Cap Moving the Product and Precautions Your fingers may be stuck in the standComponent Names and Functions Front / Right ViewRear View Power Port Kensington Lock / Recovery ButtonExit Button Keyboard View Connecting the Power Connecting the Keyboard / MouseChrome OS Mode Turning on PowerTurning off Power Monitor ModeGuide Using the Monitor OSD Settings Menu Front Panel of the ProductDevice Program app Installation Using Chrome OSWhat is Google Chrome? Programs appsInitial Setting and Logging Tion procedures as guided English English English Background Nected to a wired networkStart Screen Per... or Autohide shelf menuSet up Wake On LAN WOL You can set up and use Wake On LAN WOL if you wantTurn Verification Off Press Ctrl + D to display the following screen After about thirty seconds, the following screen appears To use this function, turn Verification Off Developer Mode Turn Wake On LAN On/OffTo turn on Wake On LAN, type ethtool -s eth0 wol g To turn off Wake On LAN, type ethtool -s eth0 wol dTurn Verification On Power Management Using the Monitor Connecting the Hdmi CableTo Read the Users Guide Product Specifications Factory Preset Mode Supported file types and codecGuide on open source licenses for customers Supported external storage devicesSystem Limitations Guide From website chrome//creditsTroubleshooting Chrome OS TroubleshootingMonitor Troubleshooting Vertical FrequencyHorizontal Frequency Monitor’s performance Declaration of Conformity