Dell XPS 15 7590 XPS 15 Service Manual - Page 56

35 Removing the fingerprint reader daughterboard (optional) NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. Prerequisites NOTE: The fingerprint reader is available depending on the configuration ordered. 1. Remove the base cover. 2. Remove the battery (half-length) or the battery (full-length). 3. Remove the memory modules. 4. Follow the procedure from step 1 to step 4 in "Removing the hard drive". 5. Remove the solid-state drive (half-length) or the solid-state drive (full-length). 6. Remove the wireless card. 7. Remove the heat sink. 8. Remove the fans. 9. Remove the system-board assembly. Procedure 1. Peel the fingerprint-reader cable (optional) from the palm-rest assembly. 2. Peel the tape that secures the power-button module to the palm-rest assembly. 3. Remove the screw (M1.6x1.5) that secures the fingerprint-reader board (optional) to the palm-rest assembly. 4. Remove the two screws (M1.6x3) that secure the power-button module to the palm-rest assembly. 5. Lift the power-button module and fingerprint-reader board (optional) off the palm-rest assembly. 56 Removing the fingerprint reader daughter-board (optional)