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

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).
g. Optical drive (see Optical drive on page 45).
h. Keyboard (see Keyboard on page 47).
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If you are replacing a memory module, remove the existing memory module:.
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Pull away the retention clips (1) on each side of the memory module.
The memory module tilts up.
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Grasp the edge of the memory module (2), and then gently pull the memory module out of the
memory module slot.
CAUTION: To prevent damage to the memory module, hold the memory module by the edges only. Do
not touch the components on the memory module.
To protect a memory module after removal, place it in an electrostatic-safe container.
To install a memory module:
CAUTION: To prevent damage to the memory module, hold the memory module by the edges only. Do not
touch the components on the memory module.
1. Align the notched edge (1) of the memory module with the tab in the memory module slot.
Component replacement procedures 51