HP EliteBook 840 G4 Notebook PC HP EliteBook 848 G4 Notebook PC Maintenance and Service Guide

Fingerprint reader assembly
Description Spare part number
Fingerprint reader assembly (includes cable) 849912-001
Before removing the ngerprint reader assembly, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is o or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
4. Remove the bottom cover (see Bottom cover on page 32).
5. Remove the battery (see Battery on page 36).
6. Remove the keyboard (see Keyboard on page 47).
7. Remove the internal base plate (Internal base plate on page 50).
Remove the ngerprint reader assembly:
1. Position the computer upright and open all the way.
2. Disconnect the ngerprint reader board cable from the system board.
3. Position the computer upside down.
4. Remove the Mylar cover from atop the ngerprint reader assembly (1).
5. Slide the bracket toward the right, and then lift it from the computer (2).
Component replacement procedures 55