Lenovo E520, E420, 114155U manual Replacing memory, Prerequisites for the procedure

10.Reinstall the battery. For more information about how to reinstall the battery, refer to “Replacing the battery” on page 77.

11.Turn the computer over again. Connect the ac power adapter and cables to the computer; then turn it on.

Replacing memory

Before you start, print these instructions.

Increasing memory capacity is an effective way to make programs run faster. To replace or add memory, read the following prerequisites, and then the instruction.

Prerequisites for the procedure

When replacing the memory, be sure to follow the precautions.

Note: The operating speed of the memory module depends on the system configuration of your computer and its combination with the memory module installed on your computer. In some conditions, the memory in your computer may not be able to operate at the maximum speed.

Attention: Before you start installing a module, touch a metal table or a grounded metal object. This action reduces any static electricity from your body. The static electricity could damage the SO-DIMM.

Replacing memory

To install an SO-DIMM, do the following:

1.Turn off the computer; then disconnect the ac power adapter and all cables from the computer.

2.Close the computer display, and turn it over.

3.Remove the battery. For more information, refer to “Replacing the battery” on page 77.

4. Loosen the screws

1 , and then remove the cover

2.

Chapter 6. Replacing devices 93