Reference Guide

2. Tighten the upgrade bay screw (2).
3. Replace the service door (see Replacing the service door on page 49).
4. Insert the battery (see
Inserting or removing the battery on page 20).
5. Turn the computer right-side up, and then reconnect AC power and external devices to the
computer.
6. Turn on the computer.
Replacing memory modules
The computer has one memory module compartment.
WARNING! To reduce the risk of electric shock and damage to the equipment, unplug the power
cord and remove all batteries before installing a memory module.
CAUTION: Electrostatic discharge (ESD) can damage electronic components. Before beginning
any procedure, ensure that you are discharged of static electricity by touching a grounded metal
object.
CAUTION: To prevent information loss or an unresponsive system:
Shut down the computer before replacing memory modules. Do not remove a memory module while
the computer is on or in the Sleep state.
If you are not sure whether the computer is off, turn the computer on by pressing the power button.
Then shut down the computer through the operating system.
NOTE: The primary memory is located in the bottom memory slot and the expansion memory is
located in the top memory slot.
To 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
Inserting or removing the battery on page 20).
Replacing memory modules 53