Typical Expansion Memory Configuration; Removing And Installing Memory Modules - Sony PCG-VX89 VAIO User Guide (primary manual) User Manual

❑
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

Total System Memory (MB)
128
256

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.
✍
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.
5 Use an appropriate screwdriver to loosen and remove the screws on the
bottom of the computer.
To avoid damaging the computer, do not remove or loosen any other screws.
Upgrading Your Computer's Memory
On board (MB)
128
128
Slot (MB)
0
128
149