HP ProBook 640 G1 Maintenance And Service Manual page 73

Description
4-GB (PC3L, 12800, 1600)
2-GB (PC3L, 12800, 1600)
To add or replace a memory module:
1. Save your work and shut down the computer.
2. Disconnect AC power and external devices connected to the computer.
3. Remove the battery (see
4. Remove the service cover (see
5. If you are replacing a memory module, remove the existing memory module:
a. Pull away the retention clips (1) on each side of the memory module.
The memory module tilts up.
b. 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.
Reverse this procedure to install a memory module.
Battery on page 56).
Service cover on page 57).
Component replacement procedures
Spare part number
691740-001
691739-001
63