Toshiba Satellite L640D Maintenance Manual page 180

Chapter 4 Replacement Procedures
Installing a memory module
To install a memory module, confirm that the computer is in boot mode. Then perform the
following procedure (See Figure 4-4-3).
1. Insert a memory module into the connector of the computer slantwise (terminal side
first) and press it to connect firmly.
CAUTION: The power must be turned off when you insert a memory module. Inserting a
memory module with the power on might damage the module or the
computer itself.
Never press hard or bend a memory module.
2. Install the memory slot cover and secure it with the screw.
3. When the power of the computer is turned on, the computer checks automatically the
memory size. Confirm that the new memory is detected correctly.
4. If the memory is not detected, check that it is connected correctly.
Satellite L640/L645, Satellite Pro L640/Pro L645 Maintenance Manual (960-Q08)
Figure 4-4-3 Insert a memory module