Dell OptiPlex 7440 All-In-One Owner's Manual

Removing the display assembly

1. Follow the procedure in Before Working Inside Your Computer.
2. Remove the:
   1. stand
   2. back cover
   3. cable cover
   4. speaker cover
   5. VESA mount bracket
   6. system-board shield
   7. WLAN card
   8. optical drive
   9. hard drive
   10. intrusion switch
   11. OSD buttons board
   12. converter board
   13. power-supply unit
   14. heatsink
   15. processor fan
   16. speakers
   17. system board
   NOTE These instructions are valid only for non-touch computers. For touch computers, the display panel should be disassembled in a clean-room environment.
3. Perform the following steps as shown in the illustration:
   1. Remove the power-switch cable from the retention clip [1].
   2. Unthread the camera cable from the retention clips on the display panel [2].
   
4. Perform the following steps as shown in the illustration:
   1. Peel off the tape to access the cables [1].
   2. Remove the screws that secure the base panel to the chassis [2].
   3. Lift the display-panel base from the display bezel [3].
   
5. Perform the following steps as shown in the illustration:
   1. Lift the latch and disconnect the cables [1,2].
   2. Remove the screws that secure the display assembly to the chassis [3].
   3. Lift the display assembly away from the computer [4].