Dell SE2425H Monitor

Notes, Cautions, and Warnings

NOTE: A NOTE indicates important information that helps you make better use of your product.

CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

WARNING: A WARNING indicates a potential for property damage, personal injury, or death.

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Safety Instructions

Use the following safety guidelines to protect your monitor from potential damage and to ensure your personal safety. Unless otherwise noted, each procedure included in this document assumes that you have read the safety information that shipped with your monitor.

NOTE: Before using the monitor, read the safety information that is shipped with your monitor and printed on the product. Keep the documentation at a secure location for future reference.

WARNING: Use of controls, adjustments, or procedures other than those specified in this documentation may result in exposure to shock, electrical hazards and/or mechanical hazards.

CAUTION: The possible long-term effect of listening to audio at high volume through the headphones (on monitor that support it) may damage your hearing ability.

• Place the monitor on a solid surface and handle it carefully. The screen is fragile and can be damaged if dropped or hit with a sharp object.
• Ensure that your monitor is electrically rated to operate with the AC power available in your location.
• Keep the monitor in room temperature. Excessive cold or hot conditions can have an adverse effect on the liquid crystal of the display.
• Connect the power cable from the monitor to a wall outlet that is near and accessible. See Connecting the cables.
• Do not place and use the monitor on a wet surface or near water.
• Do not subject the monitor to severe vibration or high impact conditions. For example, do not place the monitor inside a car trunk.
• Unplug the monitor when it is going to be left unused for an extended period.
• To avoid electric shock, do not attempt to remove any cover or touch the inside of the monitor.
• Read these instructions carefully. Keep this document for future reference. Follow all warnings and instructions that are marked on the product.
• Certain monitors can be wall mounted using the VESA mount that is sold separately. Ensure to use the correct VESA specifications as mentioned in the wall mounting section of the User's Guide.

For information about safety instructions, see the Safety, Environmental and Regulatory Information (SERI) document that is shipped with your monitor.

Before working inside your monitor

1. Save and close all open files and exit all open applications.
2. Turn off your monitor.
3. Disconnect your monitor and all attached devices from their electrical outlets.
4. Disconnect all attached network devices and peripherals, such as keyboard, mouse, and dock from your monitor.

CAUTION: To disconnect a network cable, first unplug the cable from your monitor and then unplug the cable from the network device.

5. Remove any media card and optical disc from your monitor, if applicable.

After working inside your monitor

CAUTION: Leaving any loose or misplaced screws inside your monitor may severely damage it.

1. Replace all screws and ensure that no stray screws remain inside your monitor.
2. Connect any external devices, peripherals, or cables you removed before working on your monitor.
3. Replace any media cards, discs, or any other parts that you removed before working on your monitor.
4. Connect your monitor and all attached devices to their electrical outlets.
5. Turn on your monitor.

Views of SE2425H Monitor

Side view

Description of the side view of the Dell SE2425H monitor. The image shows the monitor from its side, displaying its profile and stand.

Front view

Description of the front view of the Dell SE2425H monitor. The image shows the display panel and the Dell logo.

1. Display panel: Provides visual output to the user.

Bottom view

Description of the bottom view of the Dell SE2425H monitor. The image shows the ports on the back of the monitor.

1. Power port: To connect the monitor power cable.

2. HDMI port: Connect to your computer with the HDMI cable.

3. VGA port: Connect to your computer with the VGA cable.

Major Components of SE2425H Monitor

Description of the major components of the Dell SE2425H monitor, illustrated with an exploded view diagram.

Wiring Connectivity Diagram

Description of the wiring connectivity diagram for the Dell SE2425H monitor, showing internal cable connections.

Connecting the Cables

WARNING: Before you begin any of the following procedures, follow the Safety Instructions.

WARNING: Ensure that the grounded power outlet for the power cable is accessible to the operator and located close to the equipment. To disconnect power from the equipment, unplug the power cord from the power outlet by grasping the plug firmly. Never pull on the cord.

WARNING: A certified power supply cord has to be used with this equipment. The relevant national installation and/or equipment regulations shall be considered. Use a certified power supply cord meeting IEC 60227 standards (H05VV-F 3G 0.75 mm² or H05VVH2-F2 3G 0.75 mm²). Alternatively, you can consider a synthetic rubber flexible cord.

NOTE: Do not connect all cables to the computer simultaneously. 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 if non-Dell cables are used.

To connect your monitor to the computer:

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

Connecting VGA cable

Description of connecting the VGA cable from the monitor to the computer.

Connecting HDMI cable

Description of connecting the HDMI cable from the monitor to the computer.

Disassembly and Reassembly

NOTE: The images in this document may differ from your computer depending on the configuration you ordered.

Recommended Tools

• Phillips screwdriver #0
• Phillips screwdriver #2
• Nut driver 5 mm
• Plastic scribe

Screw List

NOTE: When removing screws from a component, it is recommended to note the screw type, the quantity of screws, and then place them in a screw storage box. This is to ensure that the correct number of screws and correct screw type is restored when the component is replaced.

NOTE: Some computers have magnetic surfaces. Ensure that the screws are not left attached to such surfaces when replacing a component.

NOTE: Screw color may vary with the configuration ordered.

Stand

Removing the Stand

Prerequisites

• Follow the procedure in Before working inside your monitor.

Steps

1. Tilt the stand downwards to access the release button.
2. Using a screwdriver, press the release button to pull the stand from the monitor.
3. Press the release tab on the bottom of the base to separate the stand base from the stand riser.

Description of the stand removal process, showing the tilt action, release button press, and release tab press.

Installing the Stand

Steps

1. Attach the stand riser to the stand base.
2. Slide the stand into the slot on the back cover.

Description of the stand installation process, showing the attachment of the riser to the base and sliding it into the back cover slot.

Next steps

1. Follow the procedure in After working inside your monitor.

VESA Cover

Removing the VESA Cover

Prerequisites

1. Follow the procedure in Before working inside your monitor.

Steps

1. Press the rift on the VESA cover to release it from the back of the monitor.
2. Lift the VESA cover away from the monitor.

Description of removing the VESA cover, showing the release mechanism.

Installing the VESA Cover

Steps

1. Attach the VESA cover onto the back cover.

Description of installing the VESA cover onto the back cover.

Next steps

1. Install the stand.
2. Follow the procedure in After working inside your monitor.

Back Cover

Removing the Back Cover

Prerequisites

1. Follow the procedure in Before working inside your monitor.
2. Remove the stand.
3. Remove the VESA cover.

Steps

1. Remove the two screws (M4x10) that secure the back cover to the chassis assembly.
2. Remove the two screws (M4x4.5) that secure the back cover to the chassis assembly.
3. Using the plastic scribe, pry the back cover starting from the bottom edge of the monitor.
4. Lift and remove the back cover away from the monitor.

Description of removing the back cover, showing the location of M4x10 and M4x4.5 screws and the prying action.

Description of the process of removing the back cover, illustrating the prying action.

Installing the Back Cover

Steps

1. Place and snap the back cover into place on the chassis assembly.

NOTE: Align the screw holes on the back cover with the screw holes on the chassis assembly before applying slight pressure to the back cover.

2. Replace the four screws (M4x10) to secure the back cover to the monitor.
3. Replace the two screws (M4x4.5) to secure the back cover to the monitor.

Description of installing the back cover, showing the alignment of screw holes and the placement of M4x10 and M4x4.5 screws.

Next steps

1. Install the VESA cover.
2. Install the stand.
3. Follow the procedure in After working inside your monitor.

Keypad Board

Removing the Keypad Board

Prerequisites

1. Follow the procedure in Before working inside your monitor.
2. Remove the stand.
3. Remove the VESA cover.
4. Remove the back cover.

Steps

1. Open the latch and disconnect the keypad cable from the connector on the interface board.
2. Remove the keypad board from the slot on the front bezel.
3. Peel the keypad cable off from the panel shielding.

Description of removing the keypad board, showing the disconnection of the keypad cable and the removal from the front bezel.

Installing the Keypad Board

Steps

1. Align and place the keypad board onto the front bezel.
2. Adhere the keypad cable on the panel shielding.
3. Connect the keypad cable to the connector on the interface board. Close the latch after connecting the keypad cable to the connector.

Description of installing the keypad board, showing the alignment, adhering the cable, and connecting it to the interface board.

Next steps

1. Install the back cover.
2. Install the VESA cover.
3. Install the stand.
4. Follow the procedure in After working inside your monitor.

Chassis Assembly

Removing the Chassis Assembly

Prerequisites

1. Follow the procedure in Before working inside your monitor.
2. Remove the stand.
3. Remove the VESA cover.
4. Remove the back cover.
5. Remove the keypad board.

Steps

1. Remove the two screws (M3x4) that secure the chassis to the display panel.
2. Peel the tape at the bottom left corner of the monitor.
3. Disconnect the lightbar cable from the connector on the display panel.
4. Peel the two aluminum foils on the LVDS connector and chassis assembly.
5. Disconnect the LVDS cable from the connector on the display panel.
6. Remove the chassis assembly from the display panel.

Description of removing the chassis assembly, showing the location of M3x4 screws, tape, lightbar cable, and LVDS cable.

Description of removing the chassis assembly, illustrating the disconnection of cables and removal of aluminum foils.

Installing the Chassis Assembly

Steps

1. Connect the LVDS cable to the connector on the display panel. Adhere the aluminum foil on the LVDS connector.
2. Replace two screws (M3x4) to secure chassis assembly to display panel.
3. Connect the lightbar cable to the panel and adhere the tape to cover the connector.

Description of installing the chassis assembly, showing the connection of LVDS cable, securing with M3x4 screws, and connecting the lightbar cable.

Next steps

1. Install the keypad board.
2. Install the back cover.
3. Install the VESA cover.
4. Install the stand.
5. Follow the procedure in After working inside your monitor.

Interface Board

Removing the Interface Board

Prerequisites

1. Follow the procedure in Before working inside your monitor.
2. Remove the stand.
3. Remove the VESA cover.
4. Remove the back cover.
5. Remove the keypad board.
6. Remove the chassis assembly.

Steps

1. Remove the two hex screws from the VGA port.
2. Peel the mylar from the chassis assembly.
3. Remove the four screws (M3x6) from the interface board and power board.
4. Remove the screw (M4x9) from the power board.
5. Remove the interface board and power board from the chassis.
6. Disconnect the power cable from the connector on the interface board.
7. Disconnect the LVDS cable from the connector on the interface board.

Description of removing the interface board, showing the location of hex screws, mylar, M3x6 screws, and M4x9 screw.

Description of removing the interface board, illustrating the removal of screws and components.

Description of removing the interface board, showing the separation of the power board and interface board.

Installing the Interface Board

Steps

1. Connect the LVDS cable to the connector on the interface board.
2. Connect the power cable to the connector on the interface board.
3. Assemble the interface board and power board to the chassis.
4. Replace the four screws (M3x6) to secure the interface board and power board with the chassis.
5. Replace the screw (M4x9) to secure the power board with the chassis.
6. Replace the two hex screws (#4-40x11.8) to secure the VGA port.

Description of installing the interface board, showing the connection of LVDS and power cables, assembly to chassis, and securing with screws.

Description of installing the interface board, showing the final placement and securing of the interface board and VGA port.

Next steps

1. Install the chassis assembly.
2. Install the keypad board.
3. Install the back cover.
4. Install the VESA cover.
5. Install the stand.
6. Follow the procedure in After working inside your monitor.

Power Board

Removing the Power Board

Prerequisites

1. Follow the procedure in Before working inside your monitor.
2. Remove the stand.
3. Remove the VESA cover.
4. Remove the back cover.
5. Remove the keypad board.
6. Remove the chassis assembly.
7. Remove the interface board.

Steps

1. Disconnect the lightbar cable from the connector on the power board.

Description of removing the power board, showing the disconnection of the lightbar cable.

Installing the Power Board

Steps

1. Connect the lightbar cable to the connector on the power board.

Description of installing the power board, showing the connection of the lightbar cable.

Next steps

1. Install the interface board.
2. Install the chassis assembly.
3. Install the keypad board.
4. Install the back cover.
5. Install the VESA cover.
6. Install the stand.
7. Follow the procedure in After working inside your monitor.

Troubleshooting Instructions

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. To ensure proper self-test operation, remove all digital cables from the back of the computer.
3. Turn on the monitor.

NOTE: A dialog box should appear on-screen (against a black background), if the monitor cannot sense a video signal and is working correctly. While in self-test mode, the power LED remains white.

Description of the VGA cable disconnected warning message.

Description of the HDMI cable disconnected warning message.

NOTE: This message 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 screen remains blank after you perform the previous procedure, check your video controller and computer, because your monitor is functioning properly.

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.

Description of the built-in diagnostics function buttons.

To run the built-in diagnostics:

1. Ensure that the screen is clean (no dust particles on the surface of the screen).
2. Press and hold Button 4 for about 4 seconds and wait for a pop-up menu.
3. Use Button 1 or 2 to select the desired option and press [Enter/Confirm] to confirm.

A gray test pattern appears at the beginning of the diagnostic program.

4. Carefully inspect the screen for abnormalities.
5. Press Button 1 to change the test patterns.
6. Repeat steps 4 and 5 to inspect the display in red, green, blue, black, white, and text screens.
7. When in a White color test screen, check for white color uniformity and if there white color appears greenish/reddish, so on.
8. Press Button 1 to end the diagnostic program.

Common Problems

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

Product-Specific Problems

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

Contacting Dell

To contact Dell for sales, technical support, or customer service issues, see www.dell.com/contactdell.

NOTE: Availability varies by country and product, and some services may not be available in your country.

NOTE: If you do not have an active internet connection, you can find contact information about your purchase invoice, packing slip, bill, or Dell product catalog.