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A+ Test Prep Tutorials

The following online study guide is designed to help you with your Comptia A+ test prep. You can discuss any questions or comments that you may have, either on these study guides or on the Comptia A+ test on our community forum.

Introduction
Preventive Maintenance Products

Vacuum Cleaners

	Tip
Never set the speed of the vacuum cleaner to "high," because high speed might damage the delicate components of the computer.

Dust particles enter the system unit through its air ducts and obstruct them. Obstructed air ducts affect the air circulation. This results in heating up of system unit. Dust particles inside the system unit are also responsible for wear and tear of components and conduction of charge. Therefore, the components of the system unit are prone to high risk of damage.

To prevent this problem, you can use vacuum cleaners to remove dust particles from inside the system unit. When you blow the dust off using vacuum cleaners, make sure you are not just blowing it back into the computer.

Small, portable vacuum cleaners are also available in the market. They are economical and easy to manage.


	Note
	To Avoid Excessive Heat: Install an adequate fan in the power supply
	To Avoid Magnetism: Keep anything magnetic such as phones that ring instead of beep, speakers, monitors, magnetic screwdrivers, and magnets away from computers and floppy disks.
	To Avoid Water or corrosive agents: Be cautious when using any sprays or liquids around computers

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