Dell Latitude 9440 2-in-1 Servicehandbuch Seite 51

3. For models shipped with a fingerprint reader, disconnect the power button FPC cable from the connector on the USH I/O
board. For models shipped without a fingerprint reader, disconnect the power button FPC cable from the connector on the
system board.
NOTE: Power button with fingerprint reader connects to the USH board and USH board FPC connects to the system
board. Power button without fingerprint reader connects directly to system board as it shares the same connector as
the USH FPC board connector on the system board.
4. Peel off the power button FPC from the palm-rest assembly and lift the power button off the system.
Installing the power button with fingerprint reader assembly
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following images indicate the location of the power button and provides a visual representation of the installation
procedure.
Steps
1. Align and place power button on the system. Adhere the power button FPC on the palm-rest assembly.
2. For models shipped with a fingerprint reader, connect the power button with fingerprint reader FPC cable to the connector
on the USH daughter board. For models shipped without a fingerprint reader, connect the power button FPC cable to the
connector on the system board
NOTE: Power button with fingerprint reader connects to the USH board and USH board FPC connects to the system
board. Power button without fingerprint reader connects directly to system board as it shares the same connector as
the USH FPC board connector on the system board.
3. Place the power button bracket on the power button assembly.
4. Replace the (M1.6x2) screw to secure the power button bracket to the palm-rest assembly.
Next steps
1. Install the system board.
Entfernen und Einbauen von Komponenten 51