Dell S2240Tb manual Poor Focus

Page 46

Poor Focus

Picture is fuzzy,

 

blurry, or

 

ghosting

Perform Auto Adjust via OSD.

Adjust the Phase and Pixel Clock controls via OSD.

Eliminate video extension cables.

Reset the monitor to Factory Settings.

Change the video resolution to the correct aspect ratio (16:9).

Shaky/Jittery

Wavy picture or

Video

fine movement

Perform Auto Adjust via OSD.

Adjust the Phase and Pixel Clock controls via OSD.

Reset the monitor to Factory Settings.

Check environmental factors.

Relocate the monitor and test in another room.

Missing Pixels LCD screen has spots

Cycle power on-off.

Pixel that is permanently off is a natural defect that can occur in LCD technology.

For more information on Dell Monitor Quality and Pixel Policy, see Dell Support site at: support.dell.com.

Stuck-on Pixels LCD screen has bright spots

Cycle power on-off.

Pixel that is permanently off is a natural defect that can occur in LCD technology.

For more information on Dell Monitor Quality and Pixel Policy, see Dell Support site at: support.dell.com.

Brightness

Picture too dim

• Reset the monitor to Factory Settings.

Problems

or too bright

• Auto Adjust via OSD.

 

 

• Adjust brightness & contrast controls via OSD.

 

 

 

Geometric

Screen not

• Reset the monitor to Factory Settings.

Distortion

centered

• Auto Adjust via OSD.

 

correctly

• Adjust horizontal & vertical controls via OSD.

 

 

NOTE: When using DVI-D/HDMI input, the positioning

 

 

adjustments are not available.

 

 

 

Horizontal/

Screen has one

• Reset the monitor to Factory Settings.

Vertical Lines

or more lines

• Perform Auto Adjust via OSD.

 

 

• Adjust Phase and Pixel Clock controls via OSD.

 

 

• Perform monitor self-test feature check and determine if

 

 

these lines are also in self-test mode.

 

 

• Check for bent or broken pins in the video cable connector.

 

 

• Run the built-in diagnostics.

 

 

NOTE: When using DVI-D/HDMI input, the Pixel Clock and

 

 

Phase adjustments are not available.

 

 

 

Synchronization

Screen is

• Reset the monitor to Factory Settings.

Problems

scrambled or

• Perform Auto Adjust via OSD.

 

appears torn

• Adjust Phase and Pixel Clock controls via OSD.

 

 

• Perform monitor self-test feature check to determine if the

 

 

scrambled screen appears in self-test mode.

 

 

• Check for bent or broken pins in the video cable connector.

 

 

• Restart the computer in the safe mode.

 

 

 

46 Troubleshooting

Image 46
Contents Dell S2240T Monitor User’s Guide Rev. A00 Contents FCC Notices U.S. Only and Other Regulatory Package Contents About Your MonitorProduct Features Identifying Parts and Controls Front ViewSide View Back ViewBack View with monitor stand Bottom View Flat Panel Specifications Monitor SpecificationsResolution Specifications Supported Video Modes Preset Display ModesElectrical Specifications ModelPhysical Characteristics Lite-On PA-1041-71TP-LFEnvironmental Characteristics Power Management ModesTouch Specifications VGA Connector Pin Pin Side Number Connected Signal Cable Pin AssignmentsDVI Connector Pin Pin Side Number Connected Signal Cable Plug and Play Capability LCD Monitor Quality and Pixel Policy USB Upstream ConnectorUniversal Serial Bus USB Interface USB PortsMaintenance Guidelines Cleaning Your MonitorAbout Your Monitor Connecting Your Monitor Attaching the StandPage Connecting the USB cable Organizing Your CablesRemoving the Monitor Stand Wall Mounting OptionalPage Setting Up the Monitor Shortcut key Preset Modes Power On the MonitorUsing the Side Panel Controls Press the button to turn on the monitorSide Panel Button Using the On-Screen Display OSD Menu Accessing the Menu SystemPage Icon Menu andDescription Submenus Operating the Monitor Input Color Format Operating the Monitor Settings Demo ModeReset Color Settings Aspect RatioDynamic Operating the Monitor Operating the Monitor Page Page Setting the Maximum Resolution Tilting the Monitor Troubleshooting Self-TestBuilt-in Diagnostics Common Problems In-Store DemoPoor Focus Touch Problem Specific What You Possible Solutions Symptoms ExperienceSymptoms Experience Product Specific ProblemsSpecific What You Setting Up Your Monitor Setting the display resolution