Latitude 7455 Owner's Manual

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Installing the I/O board (for computers shipped with WWAN support)

CAUTION:The information in this installation section is intended for authorized service technicians only.

NOTE:The information in this installation section is only applicable for computers that are shipped with WWAN support.

If you are replacing a component, remove the existing component before performing the installation procedure.

The following images indicate the location of the I/O board and provide a visual representation of the installation procedure.

Lift and open the right-display hinge to a 90-degree angle from the palm-rest and keyboard assembly.
Align the screw holes of the palm-rest and keyboard assembly with the screw holes on the hinges of the display assembly.
Replace the four screws (M2x2.5) that secure the I/O board to the palm-rest and keyboard assembly.
For computers with a fingerprint reader, connect the fingerprint reader cable to the connector (JFP1) on the I/O board.
Connect the I/O-board FPC cable to the connector (JWWAN1) on the I/O board and close the latch to secure the cable.
Connect the I/O-board cable to the connector (JIO1) on the I/O board and close the latch to secure the cable.
Close the right-display hinge and align the screw holes on the display hinge with the screw holes on the I/O board.
Replace the two screws (M2.5x4.5) screws that secure the right-display hinge to the I/O board and palm-rest and keyboard assembly.