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Dell OptiPlex 7770 All-in-One Service Manual

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Installing the heat sink - UMA

  1. Align the captive screws on the heat sink with the screw slots on the system board and the display assembly base .[1].
  2. Tighten the five captive screws in a sequential order [1,2,3,4,5] to secure the heat sink to the system board and display assembly base.[2].
    Installing the heat sink
  3. Install the following components:
    1. System board shield
    2. Back cover
    3. Stand
  4. Follow the procedure in After working inside your computer.

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