Lenovo ThinkCentre M79, Руководство по техническому обслуживанию аппаратной части

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Using the System Update program
The System Update program (hereinafter referred to as System Update) provides regular access to system
and software updates for your computer to keep your system and software up-to-date. System Update
gathers information from the Lenovo Help Center about new updates for your computer. Then System
Update sorts and displays each update as critical, recommended, or optional to help you understand the
importance. You have complete control of which updates to download and install. After you select the
updates you want, System Update automatically downloads and installs the updates without any further
intervention from you.
System Update is preinstalled on most Lenovo computers and is ready to run. The only prerequisite is
an active Internet connection. You can start the program manually, or you can use the schedule feature
to enable the program to search for updates automatically at specified intervals. You also can predefine
scheduled updates to search by severity (critical updates, critical and recommended updates, or all updates).
As a result, the list you choose from contains only those update types that are of interest to you.
To open System Update, see “Accessing Lenovo programs on the Windows 7 operating system” on page 40
or “Accessing Lenovo programs on the Windows 8.1 operating system” on page 41.
If System Update is not currently installed on your computer, you can download it from the Lenovo Support
Web site at:
http://www.lenovo.com/support
Cleaning and maintenance
With appropriate care and maintenance your computer will serve you reliably. The following topics offer
information to help you keep your computer in top working order.
Basics
Here are some basic points about keeping your computer functioning properly:
• Keep your computer in a clean, dry environment. Ensure that the computer rests on a flat, steady surface.
• Do not cover any of the vents in the computer or monitor. These vents provide airflow to keep your
computer from overheating.
• Keep food and drinks away from all parts of your computer. Food particles and spills might make the
keyboard and mouse stick and unusable.
• Do not get the power switches or other controls wet. Moisture can damage these parts and cause an
electrical hazard.
• Always disconnect a power cord by grasping the plug instead of the cord.
Cleaning your computer
It is a good practice to clean your computer periodically to protect the surfaces and ensure trouble-free
operation.
CAUTION:
Be sure to turn off the computer and monitor before cleaning the computer and monitor screen.
Computer
Use only mild cleaning solutions and a damp cloth to clean the painted surfaces of the computer.
Keyboard
To clean your computer keyboard, do the following:
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ThinkCentre M79 Hardware Maintenance Manual