Lenovo A3 manual Performing Daily Maintenance Tasks, Cleaning the computer components

•In the following two situations, you must re-save a channel list:

a.When you change your TV signal from digital to analog, your saved channel list for digital TV is deleted. When you want to watch digital TV again, you must create and save a new channel list.

b.When you change your TV signal from analog to digital, your saved channel list for analog TV is deleted. When you want to watch analog TV again, you must create and save a new channel list.

•Before you can watch teletext programming, you must set the TV tuner input signal to analog.

4.6 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 around the computer

to prevent dust buildup. The cleaning supplies you need in order to clean the components include: a vacuum cleaner, a soft cotton cloth, clear water (pure water preferred) 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 that are 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.

28User Guide