Lenovo ThinkPad Yoga 11e, User Manual, Page: 121 / 164

Chapter 9. Replacing devices
This chapter contains the following items:
• “Static electricity prevention” on page 105
• “Disabling the built-in batteries” on page 105
• “Replacing the memory module” on page 106
• “Replacing the coin-cell battery” on page 108
• “Replacing the user-replaceable wireless-LAN card” on page 120
• “Replacing the hard disk drive or solid-state drive” on page 111
• “Replacing the keyboard” on page 115
Static electricity prevention
Static electricity, although harmless to you, can seriously damage computer components and options.
Improper handling of static-sensitive parts can cause damage to the part. When you unpack an option or
a CRU, do not open the static-protective package containing the part until the instructions direct you
to install it.
When you handle options or CRUs, or perform any work inside the computer, take the following precautions
to avoid static-electricity damage:
• Limit your movement. Movement can cause static electricity to build up around you.
• Always handle components carefully. Handle adapters, memory modules, and other circuit boards by the
edges. Never touch exposed circuitry.
• Prevent others from touching components.
• When you install a static-sensitive option or CRU, 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.
• When possible, remove the static-sensitive part from the static-protective packaging and install the part
without setting it down. When this is not possible, place the static-protective packaging on a smooth,
level surface and place the part on it.
• Do not place the part on the computer cover or other metal surface.
Disabling the built-in batteries
Before replacing any devices, ensure that you have disabled the built-in batteries by doing the following:
1. Disconnect the ac power adapter and all cables from the computer.
2. Restart the computer. Press F1 to enter ThinkPad Setup when the logo screen appears.
3. Select Config ➙ Power . The submenu is displayed.
4. Select Disable Built-in Battery .
5. Click Yes in the Setup Warning window. Then the computer turns off and the built-in batteries are
disabled. Wait for a few minutes to let the computer cool.
Note: The built-in batteries will be automatically enabled again when the ac power adapter is connected
to the computer.
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