HP EliteBook 8770w Mobile Workstation Maintenance and Service Guide

Before removing the application button board, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off 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 first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4. Remove the battery (see
Battery on page 51).
5. Remove the service access cover (see
Service access cover on page 52).
6. Remove the optical drive (see
Optical drive on page 63) or upgrade bay hard drive (see Upgrade
bay hard drive on page 66).
7. Remove the keyboard (see
Keyboard on page 71).
8. Remove the top cover (see
Top cover on page 83).
Remove the application button board:
1. Position the top cover upside down with the front toward you.
2. Slide the application button board cable (1) out from the clip in the top cover.
3. Remove the two Phillips M2.5x3.0 screws (2) that secure the application button board to the top
cover.
4. Remove the application button board (3).
Reverse this procedure to install the application button board.
Fingerprint reader
Description Spare part number
Fingerprint reader 688743-001
Component replacement procedures 93