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Chapter 6. Replacing hardware
This chapter provides instructions on how to replace hardware for your computer.
Before replacing hardware
Attention: Do not open the computer or attempt any repair before reading and understanding “Read this
first: Important safety information” on page v in this document.
Notes before replacing hardware
• Use computer components provided only by Lenovo.
• When installing or replacing an option, use the appropriate instructions explained in this manual along with
the instructions that come with the option.
• In most areas of the world, Lenovo requires the return of defective CRUs. Information about this will come
with the CRU or will come a few days after the CRU arrives.
Handling static-sensitive devices
Do not open the static-protective package containing the new part until the defective part has been removed
and you are ready to install the new part. Static electricity, although harmless to you, can seriously damage
computer components and options.
When you handle options and other computer components, take these precautions to avoid static-electricity
damage:
• Limit your movement. Movement can cause static electricity to build up around you.
• Always handle options and other computer components carefully. Handle PCI/PCIe cards, memory
modules, system boards, and microprocessors by the edges. Never touch any exposed circuitry.
• Prevent others from touching the options and other computer components.
• Touch the static-protective package containing the part to a metal expansion-slot cover or other
unpainted metal surface on the computer for at least two seconds. This reduces static electricity from the
package and your body before you install or replace a new part.
• When possible, remove the new part from the static-protective package, and install it directly in the
computer without setting the part down. When this is not possible, place the static-protective package on
a smooth, level surface and place the part on the package.
• Do not place the part on the computer cover or other metal surface.
Guidelines for replacing non-CRUs
During the replacement of non-CRUs, it is recommended that you observe the following guidelines:
1. Connect the computer to the Internet with a static IP address, as required by Amazon.
2. Connect the keyboard and mouse to the computer.
3. Connect the computer to ac power and turn on the computer.
4. In the Welcome screen, click the test button at the right-bottom corner.
5. In the Manufacturing Tests screen, click Switch to OS test mode .
6. Select the test you need for the suspected failing part.
• Firmware Tests : The following items will be tested automatically during the test.
a. Hardware information
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