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Dell Latitude 5420 Rugged Service Manual

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Installing the Rear I-O board

  1. Install the rear I/O board on the system board and slide the serial port through the face plate [1].
  2. Secure the I/O board using three 'M2.5*5' screws [2].
    Rear I-O Board
  3. Tighten the two epoxy cap screws on the serial port [1] in the rear I/O space.
  4. Connect the I/O board FPC [2] to the system board and then to I/O board itself [3] and secure it using a piece of tape [3].
    Rear I-O Board
  5. Install the:
    1. Docking port assembly
    2. PCIe heatsink fan assembly
    3. WWAN card
    4. WLAN card
    5. Bottom chassis cover
    6. Batteries
  6. Follow the procedure in After working inside your computer.

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