Dell SE2225HM (DELL-SE2225HM) service manual

Contents

1. Safety instructionsp. 4

   Use the following safety guidelines to protect your monitor from potential damage and to ensure your personal safety. Unless otherwise noted, each procedure…

2. Before working inside your monitorp. 4

   Steps 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…

3. After working inside your monitorp. 4

   CAUTION: Leaving stray or loose screws inside your monitor may severely damage your monitor. Protecting Against Electrostatic Discharge. Steps 1. Replace all…

4. Views of SE2225HM monitorp. 5

   Front view Figure 1. Front view of the monitor Table 1. Front view descriptions Label Description Use 1 Function buttons To access the OSD menu and change the…

5. Front viewp. 5

   Figure 1. Front view of the monitor Table 1. Front view descriptions Label Description Use 1 Function buttons To access the OSD menu and change the settings if…

6. Back viewp. 5

   Figure 2. Back view of the monitor Table 2. Back view descriptions Label Description Use 1 Regulatory information List the regulatory approvals. 2 Regulatory…

7. Side viewp. 6

   Figure 3. Side view of the monitor

8. Bottom viewp. 6

   Figure 4. Bottom view of the monitor Table 3. Bottom view descriptions. Label Description Use 1 HDMI port Connect to your computer with the HDMI cable. 2 VGA…

9. Major componentsp. 7

   Figure 5. Major components

10. Wiring connectivity diagramp. 9

    Figure 6. Wiring connectivity diagram Table 5. Wiring connectivity diagram No. Description 1 Lightbar cable 2 Keypad cable 3 EDP cable

11. Connecting the cablesp. 10

    WARNING: Before you begin any of the procedures in this section, follow the Safety instructions. WARNING: For your safety, be sure that the grounded power…

12. Connecting HDMI cablep. 10

    Figure 7. Connecting HDMI cable Connecting VGA cable Figure 8. Conecting VGA cable

13. Disassembly and reassemblyp. 11

    CAUTION: The information in this section is intended for authorized service technicians in the EMEA region. Dell prohibits users from disassembling the…

14. Recommended toolsp. 11

    The procedures in this document may require the following tools: • Screwdriver (Phillips-head, Hexagonal head) • Plastic scribe

15. Screw listp. 11

    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…

16. Standp. 12

    Removing the stand Prerequisites 1. Follow the procedure in Before working inside your monitor. Steps 1. Place the monitor on a soft cloth along the desk. 2.…

17. Back coverp. 14

    Removing the back cover Prerequisites 1. Follow the procedure in Before working inside your monitor. 2. Remove the stand. Steps 1. Remove the screw (M3x8) that…

18. Keypad boardp. 16

    Removing the keypad board Prerequisites 1. Follow the procedure in Before working inside your monitor. 2. Remove the stand. 3. Remove the back cover. Steps 1.…

19. Interface board assemblyp. 18

    Removing the interface board assembly Prerequisites 1. Follow the procedure in Before working inside your monitor. 2. Remove the stand. 3. Remove the back…

20. Interface boardp. 20

    Removing the interface board Prerequisites 1. Follow the procedure in Before working inside your monitor. 2. Remove the stand. 3. Remove the back cover. 4.…

21. Troubleshootingp. 22
22. Self-testp. 22

    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…

23. Built-in diagnosticsp. 23

    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…

24. Common problemsp. 24

    The following table provides general information about common monitor problems that you might encounter and the possible solutions: Table 8. Common problems…

25. Product-specific problemsp. 25

    Table 9. Product-specific problems and solutions. Specific symptoms Possible solutions Screen image is too small • Check the Aspect Ratio setting in the Manual…

26. Contacting Dellp. 26

    To contact Dell for sales, technical support, or customer service issues, see www.dell.com/contactdell. NOTE: Availability varies by country and product, and…