Sony PCG-VX89P - Manual (Page 149)

Upgrading Your Computer’s Memory
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❑ Do not open the memory module package until you are ready to install the
module. The package protects the module from ESD.
❑ Use the special protective package to store a memory module and prevent
ESD, or wrap the memory module in aluminum foil.
Typical expansion memory configuration
Removing and installing memory modules
Make sure you read “Precautions and procedures” before you remove or install a
memory module. When installing a memory module, do not open the module
package until you are ready to install it. The package protects the module from
Electrostatic discharge (ESD).
To remove and install a memory module
1 Turn off the computer and all peripheral devices.
2 Disconnect the power cord and all cables from the computer.
3 If installed, remove the battery. See “To remove the battery.”
4 Wait for the computer to cool down.
5 Use an appropriate screwdriver to loosen and remove the screws on the
bottom of the computer.
Total System Memory (MB) On board (MB) Slot (MB)
128 128 0
256 128 128
✍
The interior of the computer becomes extremely hot during operation. Wait at least
one hour for the computer to cool down before you remove the screws.
To avoid damaging the computer, do not remove or loosen any other screws.