HP Notebook PC (Intel) * Models: 15-ay000 - 15-ay099 HP 250 G5 Notebook PC HP 256 G5 Notebook PC - Maintenance and Service Guide

TouchPad button board
Description Spare part number
TouchPad button board (includes bracket and cables) 855011-001
Before removing the TouchPad button board, 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 battery (see Battery on page 48).
5. Remove the optical drive (see Optical drive on page 49), if installed.
6. Remove the bottom cover (see Bottom cover on page 52).
7. Remove the memory module (see Memory module on page 56).
To remove the TouchPad button board:
1. Disconnect the shorter cable from the TouchPad (1) and the longer cable from the system board (2).
2. Remove the two Phillips PM2.0×3.0 screws (3) that secure the TouchPad button board to the computer.
3. Pull the TouchPad button board toward the bottom of the computer, and then remove the TouchPad
and cables (4).
Reverse this procedure to install the TouchPad button board and cables.
72 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts