Dell E2225HM (DELL-E2225HM) 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 in…

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. Steps 1. Replace all screws and ensure that no stray screws remain…

4. View of E2225HM monitorp. 5

   Front view 2 1 Figure 1. Front view Table 1. Components and descriptions. Label Description Use 1 Function buttons To access the OSD menu and change the…

5. Front viewp. 5

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

6. Back viewp. 6

   2 3 5 4 6 Figure 2. Back view Table 2. Components and descriptions. Label Description Use 1 VESA mounting holes (100 mm x 100 mm) - behind attached VESA cover…

7. Side viewp. 7
8. Bottom viewp. 7

   4 3 2 Figure 4. Bottom view Table 3. Components and descriptions. Label Description Use 1 Power connector To connect the monitor power cable. 2 DisplayPort 1.2…

9. Major components of E2225HM monitorp. 8

   The following image shows the major components of E2225HM. Figure 5. Major Components of E2225HM monitor Table 4. Major components. Callout Description 1 Stand…

10. Wiring connectivity diagramp. 9

    Figure 6. Wiring connectivity diagram Table 5. Wiring connectivity diagram Callout Description 1 Lightbar cable 2 Low Voltage Differential Signaling (LVDS)…

11. Connecting your monitorp. 9

    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. 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…

13. Recommended toolsp. 11

    Tool Description: • Phillips screwdriver #0 • Phillips screwdriver #2 • Nut driver 5 mm • Penknife

14. 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…

15. Standp. 12

    Removing the stand Prerequisites 1. Follow the procedure in Before working inside your monitor. Figure 10. Removing the stand Steps 1. Place the monitor on a…

16. Back coverp. 13

    Removing the back cover Prerequisites 1. Follow the procedure in Before working inside your monitor. 2. Remove the stand. Figure 12. Removing the back cover…

17. Main chassisp. 14

    , then press along the sides to snap the back cover into place. 2. Replace the two screws (M4x6) that secure the back cover to the display monitor. Next steps…

18. Middle framep. 18

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

19. Keypad boardp. 19

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

20. Main boardp. 21

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

21. Troubleshootingp. 24
22. Self-testp. 24

    Your monitor provides a self-test feature that allows you to check whether your monitor is functioning properly. If your monitor and computer are properly…

23. Built-in diagnosticsp. 25

    Your monitor includes a built-in diagnostic tool to helps you identify whether the screen abnormality is due to an issue with the monitor itself or with your…

24. Common problemsp. 26

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

25. Product-specific problemsp. 27

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

26. Contacting Dellp. 28

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