
Vostro 5402 Service Manual
Removing the power button and optional fingerprint reader - UMA
Prerequisites
- Follow the procedure in before working inside your computer.
- Remove the base cover.
- Remove the battery (3-cell or 4-cell).
- Remove the system fan.
- Remove the M.2 2280 SSD or M.2 2230 SSD.
- Remove the I/O board.
- Remove the coin-cell battery.
About this task
The figure indicates the location of the power button with optional fingerprint reader and provides a visual representation of the removal procedure.

Steps
- Unplug the fingerprint reader cable from the connector on the palm-rest and keyboard assembly.
- Lift the latch, and unplug the I/O cable from the connector on the palm-rest and keyboard assembly.
- Remove the I/O cable from the palm-rest and keyboard assembly.
- Remove the two screws (M2x2.5) that secure the power button with optional fingerprint reader to the palm-rest and keyboard assembly.
- Lift the power button with optional fingerprint reader, along with the fingerprint reader cable, off the palm-rest and keyboard assembly.
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