Lenovo C440, 57315617, 57312695, 57315603, C445, C345, C540 manual Performing Daily Maintenance Tasks

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Performing Daily Maintenance Tasks

Cleaning the computer components

Because many of the computer components consist of sophisticated integrated circuit boards, it is very important to periodically clean the computer to prevent dust buildup. The cleaning supplies you need to clean the components include: a vacuum cleaner, a soft cotton cloth, pure water (preferably purified or distilled water) and cotton swabs.

Attention: Before you clean your computer, disconnect the computer from the electrical outlet. Clean your computer with a soft cloth dampened with water. Do not use liquid or aerosol cleaners, which may contain flammable substances.

Note: To avoid damaging the computer or display, do not spray cleaning solution directly onto the display. Only use products specifically designed for cleaning displays, and follow the instructions included with the product.

The following are general methods for cleaning the components:

You can use a soft cloth to remove dust on the surface of the computer, the monitor, the printer, the speakers and the mouse.

You can use a vacuum cleaner to clean in otherwise inaccessible corners.

To clean the keyboard thoroughly, shut down the computer and scrub it gently with a wet cloth. Do not use the keyboard until it is dry.

Do not do any of the following:

Allow water to enter the computer.

Use a heavily dampened cloth.

Spray water directly onto the surface of the monitor or inside the computer.

LCD monitor should be cleaned daily. Use a dry cloth to brush dust from the monitor and keyboard every day. Keep all surfaces clean and free of grease stains.

26User Guide

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Contents Lenovo C3/C4/C5 Series Important Safety Information Page Contents Hardware Replacement Guide Using the Computer Hardware Front view of the computer Left and right views of the computer Rear view of the computer Installing the computer stand Computer stand Connecting your computer Connecting the power cord Important information about using the computer Connecting to the Internet Wired keyboard selected models onlyUsing Windows Shutting down the computer Switching between the main Windows 8 interfacesSwitching between apps Charms BarOpening other system programs Closing an appWindows Help and Support User Guide Using the Rescue System OneKey Recovery Method 1 Automatic Installation Driver and Application InstallationMethod 2 Manual Installation User Guide Troubleshooting Confirming Setup Troubleshooting Display Problems Solving ProblemsTroubleshooting Audio Problems Troubleshooting Software Problems Troubleshooting Problems with Optical Drives and Hard Disks Special considerations for troubleshooting Windows When do I need to change the boot mode? Bios setup utilityPerforming Daily Maintenance Tasks Hardware Replacement Guide Overview Safety information for replacing CRUsTools required Additional information resourcesHandling static-sensitive devices General information Replacing hardwareRemoving the stand base Removing the foot cover Replacing a memory module Replacing the hard disk drive User Guide Replacing the optical drive User Guide Replacing the adapter Connect the new adapter as shown To replace the keyboard Replacing the keyboard and mouseDeclaration AppendixTrademarks 10102/4773 10103/4751 10104/6595 10105/6596 10110/6267 Energy Star StatementEnabling ErP compliance mode