Dell E2725HM (DELL-E2725HM) 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. Views of E2725HM Monitorp. 5

   Front view 1 2 Figure 1. Front view Table 1. Components and descriptions. Label Description Use 1 Function buttons To access the on-screen display (OSD) menu.…

5. Front viewp. 5

   2 Figure 1. Front view Table 1. Components and descriptions. Label Description Use 1 Function buttons To access the on-screen display (OSD) menu. (For more…

6. Back viewp. 6

   1 2 4 Figure 2. Back view Table 2. Components and descriptions. Label Description Use 1 VESA mounting holes (100 mm x 100 mm) Wall mount the monitor using a…

7. Side viewp. 6

   Figure 3. Side view Table 3. Components and descriptions. Label Description Use 1 Cable-Management Clip Use to organize cables by inserting them through the…

8. Bottom viewp. 7

   2 3 4 5 Figure 4. Bottom view Table 4. Components and descriptions. Label Description Use 1 Security-lock slot (based on Kensington Security Slot) Secure your…

9. Major components of E2725HM monitorp. 8
10. Wiring connectivity diagramp. 10

    Figure 6. Wiring connectivity diagram Table 6. Wiring connectivity description. Item Description 1 Lightbar cable 2 LVDS cable 3 Keypad cable 1 2 3

11. Connecting your monitorp. 11

    WARNING: Before you begin any of the procedures in this section, follow the Safety Instructions. NOTE: Dell monitors are designed to work optimally with the…

12. Disassembly and reassemblyp. 12

    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. 12

    1. Screwdriver (Phillips-head, Hexagonal head) 2. Penknife

14. Screw listp. 12

    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. 13

    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. 15

    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. Middle framep. 17

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

18. Metal shieldp. 18

    Removing the metal shield 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. 21

    Figure 18. Installing the metal shield Steps 1. Replace the two screws (M3x2.5) and two screws (M3x4) on the metal shield. 2. Replace the two screws (4-40unc)…

20. System board and power boardp. 23

    Installing the keypad board Figure 20. Installing the keypad board Steps 1. Connect keypad board cable to the connector on the keypad board. 2. Replace the…

21. Troubleshootingp. 26

    Installing the system board and power board Figure 23. Installing the system board and power board

22. Self-Testp. 26
23. Onboard diagnosticsp. 27

    Steps 1. Replace the two power cables to the connectors on the system board and the power board. 2. Replace the screw (M3x7) on the power board to the chassis.…

24. Common problemsp. 28

    Troubleshooting WARNING: Before you begin any of the procedures in this section, follow the Safety Instructions. Self-Test Your monitor provides a self-test…

25. Contacting Dellp. 30

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