Lenovo 20JA, Руководство пользователя

Страница: 95 / 132

Chapter 9. Replacing devices
This chapter provides instructions on how to install or replace hardware for your computer.
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
Customer Replaceable Unit (CRU), do not open the static-protective package until the instructions direct you
to install the part.
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 the components.
• Before you install a static-sensitive option or CRU, do either of the following to reduce static electricity in
the package and your body:
– Touch the static-protective package that contains the part to a metal expansion-slot cover for at least
two seconds.
– Touch the static-protective package that contains the part to other unpainted metal surface on the
computer for at least two seconds.
• When possible, remove the static-sensitive part from the static-protective package and install the part
without setting it 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.
Disabling the built-in battery
Before replacing any CRU, ensure that you disable Fast Startup first and then disable the built-in battery.
To disable Fast Startup, do the following:
1. From the desktop, type
Power
in the search box on the taskbar, and select Power Options .
2. Click Choose what the power buttons do on the left pane.
3. Click Change settings that are currently unavailable at the top.
4. If prompted by User Account Control (UAC), click Yes .
5. Clear the Turn on fast startup check box, and then click Save changes .
To disable the built-in battery, do the following:
1. Restart your computer. When the logo screen is displayed, immediately press F1 to enter ThinkPad
Setup.
2. Select Config ➙ Power . The Power submenu is displayed.
3. Select Disable built-in battery and press Enter.
© Copyright Lenovo 2017
79