Dell Precision 5490 - Power Button with Fingerprint Reader; Removing the Power-Button Board with a Fingerprint Reader

5. Install the battery.
6. Install the M.2 2230 solid state drive or M.2 2280 solid state drive.
7. Install the base cover.
8. Follow the procedure in After working inside your computer.
Power button with fingerprint reader
Removing the power-button board with a fingerprint reader
CAUTION: The information in this removal section is intended for authorized service technicians only.
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the base cover.
3. Remove the M.2 2230 solid state drive or M.2 2280 solid state drive.
4. Remove the battery.
5. Remove the processor fan.
6. Remove the graphics-card fan.
7. Remove the audio jack.
8. Remove the display assembly.
9. Remove the system board.
NOTE:
The system board can be removed or installed together with the heat sink attached. This simplifies the
procedure and avoids breaking the thermal bond between the system board and the heat sink.
About this task
The figure indicates the location of the power-button board with fingerprint reader and provides a visual representation of the
removal procedure.
Figure 69. Removing the power-button board with fingerprint reader
Steps
1. Remove the three screws (M1.6x2) that secure the fingerprint-reader bracket to the power-button board.
90
Removing and installing Field Replaceable Units (FRUs)