HP 640 ProBook G3 Notebook PC & HP 650 ProBook G3 Notebook PC - Maintenance and Service Guide

1. Shut down the computer.
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 following components:
a. Service door (see Service door on page 37).
b. Battery (see Battery on page 38).
c. Hard drive (see Hard drive on page 39).
d. Solid-state drive (see Solid-state drive (select products only) on page 41).
e. WWAN module (see WWAN module (select products only) on page 42).
f. WLAN module (see WLAN module on page 43).
Remove the optical drive:
1. Remove 1 Phillips M2.0x8 screw (1).
2. Remove the optical drive (2).
Reverse this procedure to install the optical drive.
46 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts