Lenovo T420 Benutzerhandbuch
5. Put the memory slot cover back in place (1), close the cover (2), and then tighten the screw (3).
6. Reinstall the battery. For more information about how to reinstall the battery, refer to “Replacing the
7. 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. You can increase the amount
of memory in your computer by installing a PC3-10600 double data rate three (DDR3) synchronous dynamic
random access memory (SDRAM) unbuffered small outline dual inline memory module (SO-DIMM), available
as an option, in the memory slot of the computer. SO-DIMMs with different capacities are available.
of memory in your computer by installing a PC3-10600 double data rate three (DDR3) synchronous dynamic
random access memory (SDRAM) unbuffered small outline dual inline memory module (SO-DIMM), available
as an option, in the memory slot of the computer. SO-DIMMs with different capacities are available.
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.
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.
reduces any static electricity from your body. The static electricity could damage the SO-DIMM.
Replacement instructions
Increasing memory capacity is an effective way to make programs run faster. You can increase the amount
of memory in your computer by installing a PC3-10600 double data rate3 synchronous dynamic random
access memory unbuffered small outline dual inline memory module, available as an option, in the memory
slots located on the underside of your computer and under the keyboard. SO-DIMMs with different
capacities are available.
of memory in your computer by installing a PC3-10600 double data rate3 synchronous dynamic random
access memory unbuffered small outline dual inline memory module, available as an option, in the memory
slots located on the underside of your computer and under the keyboard. SO-DIMMs with different
capacities are available.
Note: Use a PC3-10600 DDR3 synchronous DRAM unbuffered SO-DIMM in your computer. If you install
an SO-DIMM that is not supported by your computer, the computer may beep, and the system may not
start or may not work properly. You can purchase the appropriate memory option from your Lenovo reseller
or a marketing representative.
an SO-DIMM that is not supported by your computer, the computer may beep, and the system may not
start or may not work properly. You can purchase the appropriate memory option from your Lenovo reseller
or a marketing representative.
Chapter 6
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Replacing devices
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