DELL E2221HN LCD Monitor Owner’s Manual

Service Manual
Service Manual
LCD Monitor
E2221HN

Service Manual Versions and Revision

Important Safety notice

Connecting your monitor
WARNING: Before you begin any of the procedures in this section, follow the Safety instructions.
NOTE: Do not connect all cables to the computer at the same time. It is recommended to route the cables through the cable-management slot before you connect them to the monitor.
NOTE: Dell monitors are designed to work optimally with Dell supplied inbox cables. Dell does not guarantee the video quality and performance when using non-Dell cables.
To connect your monitor to the computer:

1. Turn off your computer and disconnect the power cable.
2.  Connect HDMI or VGA cable from your monitor to the computer.

Exploded view diagram with list of items

NOTE:
For replacement of power cord, connectivity cable and external power supply (if applicable), contact Dell:

1. Go to https://www.dell.com/support.
2.  Verify your country or region in the Choose A Country/Region drop-down menu at the bottom-right corner of the page.
3. Click Contact Us next to the country dropdown.
4. Select the appropriate service or support link based on your need.
5. Choose the method of contacting Dell that is convenient for you

Wiring connectivity diagram

How to connect & disconnect power cable/connectivity cables

WARNING: Before you begin any of the procedures in this section, follow the Safety instructions.
NOTE: Do not connect all cables to the computer at the same time. It is recommended to route the cables through the cable-management slot before you connect them to the monitor.
NOTE: Dell monitors are designed to work optimally with Dell supplied inbox cables. Dell does not guarantee the video quality and performance when using non-Dell cables.
To connect your monitor to the computer:

1. Turn off your computer and disconnect the power cable.
2. Connect HDMI or VGA cable from your monitor to the computer.

Connecting HDMI/VGA cable

Organizing cables
Use the cable-management slot to route the cables connected to your monitor.

List of tools / equipment

1. Philips-head screwdriver
2. Hex-head screwdriver

Disassembly and Assembly Procedures

NOTE: This “Disassembly and Assembly Procedures” is for EMEA only, not for other regions. Please note that Dell will deem warranty void if any disassembly is done on the monitors.

Note: 1. The arrows point out the direction of disassembly.
Disassemble the slot of Back cover from monitor

Trouble shooting instructions

Troubleshooting
WARNING: Before you begin any of the procedures in this section, follow the Safety instructions.
Self-test
Your monitor provides a self-test feature that allows you to check if your monitor is functioning properly. If your monitor and computer are properly connected but the monitor screen remains dark, run the monitor self-test by performing the following steps:

1. Turn off both your computer and the monitor.

2. Disconnect all video cables from the monitor. This way, the computer doesn’t have to be involved.

3. Turn on the monitor.
   If the monitor is working correctly, it detects that there is no signal and one of the following message appears. While in self-test mode, the power LED remains white.  NOTE: This box also appears during normal operation, when the video cable is disconnected or damaged.

4. Turn off your monitor and reconnect the video cable, then turn on your computer and the monitor.
   If your monitor remains dark after you reconnect the cables, check your video controller and computer.

Built-in diagnostics
Your monitor has a built-in diagnostic tool that helps you determine if any screen abnormality you experience is an inherent problem with your monitor, or with your computer and video card.
To run the built-in diagnostics:

1. Ensure that the screen is clean (no dust perticles on the surface of the screen).

2. Press and Hold Button 1 for about 4 seconds and wait for a pop up menu.

3. Prees Button 3 or 4 to select the diagnostic tool and confirm with Button 2.
   A gray test pattern appeers at the beginning of the diagnostic program.

4. Carefully inspect the screen for abnormalities.

5. Press Button 4 to change the test patterns.

6. Repeat steps 4 and 5 to inspect red, green, blue, black, white and text screens.

7. Press Button 4 to end the diagnostic program.

Common problems
The following table contains general information about common monitor problems you might encounter and the possible solutions:

the computer is properly connected and secure.
•Verity that the power outlet is funacning properly using any other electrical equipment.
•Ensue that the power button is pressed.
•Ensue that the correct input source s selected via the Input Source menu.
No Video/Power LED on| •Increase brightness and contrast controls using the OSD.
•Perform monitor sett-test Mature check.
•Check tar bent or broken pins in the video cable connector.
•Run the built-in clognostcs.
•Ensure that the correct rut source 6 selected via the Input Source menu.
Poor roan| •Eliminate video extension cables.
•Reset the mornor to Factory Settings (Factory Reset).
•Change the video resolution to the correct aspect ratio.
Shaky/Jittery video|
Reset Factory Reset
the monitor to Settings (Factory ).
•Check environmental factors.
•Relocate the monitor and test in another room.
Missing owe’s| •Cycle power On-ort
•R<el that is permanently on is a natural detect that can occur in LCD technology.
•For mare information on Dell Monitor Quality and Pixel Polio/ see Dell Support srie at
www.dell.com/support/monitors.
Stuck-on pixels| •Cycle power On-oft.
•Pkel that is permanently art is a natural detect that can occur in LCD technology.
. For more intormation on Dell Monitor Quakty and Pixel Policy. see Dell Support site at
www.dell.com/support/monitors.
Brightness problems| •Reset the monitor to Factory Settings (Factory Reset).
•Adjust brightness & contrast ocntrols via OSD.
Geometric distortion| •Reset the monitor to Factory Settings (Factory Reset).
•Ade& horizontal & vertical controls ve OSD.
HonzontaVVencal Ines| •Reset the monitor to Factory Settings (Factory Reset).
•Perform monitor sett-test feature check and determine it these Ines are atso in sett-test mode.
•Check for tent or broken pins in the video cable connector.
•Run the Wilt-in degnostcs
Synchronization problems| • Reset the monitor to Factory Settings (Factory Reset).
• Perform monitor self-test feature check to determine it the scrambled screen appears in sell-test mode.
• Check Tor bent or broken pins in the video cable connector.
• Restart the computer in sate mode.
Seim related issues| • Do not perform any troubleshooting step.
• Contact Del immediately.
Intermittent problems| • Try different Preset Modes in Color settings OSD. Adjust R/G/B value in Custom Color in Color settings OSD,
• Change the Input Color Format to RGB YPb Pr – The Color settings OSD.
• Run the built-in diagnostics.
Image retention rrom a static image left on the monitor for a long penod or time| • Set the screen to turn on atter a new minutes of screen idle tine. These can be adjusted in Windows Power Options or Mac Energy Saver setting.
• Altematwely. use a dynamically changing screensaver.
Video ghosting or overshooting| • Change the Response Time in the Display OSD to Fast or Normal depending on your application and usage.

Product-specific problems

settings 050.
• Reset the m:inicor to Factory Settings (Factory Reseti.
Cannot adjust the monitor with the buttons on the bottom of the panel|  • Turn off the monitor, unplug the power cord, plug it back, anc then -.um on the monitor.
 No input signal when user controls are pressed| • Check the signal source. Ensure the computer is not in standby or sleep mode by moving the mouse or pressing any key on The keyboard.
• Check If the video cable is plugged in properly. Disconnect and reconnect the video cable if necessary.
• Reset the computer or video player.
The picture does not Till the entire screen| • Due to different video formats (aspect ratio) or DVDs, the monitor may display in ful screen.
• Run the bulk-in diagnostics.

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