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Precision 5540 Service Manual

PDF

Removing power button with fingerprint reader

Steps

  1. Follow the procedures in Before Working Inside Your Computer.
  2. Remove the:
    1. base cover
    2. battery
  3. Perform the following steps to remove the power button:
    1. Remove the M1.6x3 (2) screws that secure the power button to the system board [1].
      NOTE:There are two power button options:
      • Power button function with light indicator.
      • Power button with fingerprint reader function without light indicator (optional).
    2. Release the Mylar tape that secures the power button board to the system chassis [2].
    3. Remove the M1.6x1.5 (1) screw that secures the power button board to the system chassis [3].
    4. Disconnect and release the adhesive data cable from the system chassis [4]
    5. Lift the power button board away from the system chassis [5].
    The image displays removing the power button

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