Manual

24
Adjusting the Brightness
To adjust the brightness on the LCD screen, press and hold down the [Fn] key in the lower left
hand corner of the keyboard and press the [F7] key to reduce the brightness or [F8] to increase
the brightness.
Operating on Battery Power
Your computer comes with an optional rechargeable battery pack that lets you operate the
computer without an external power source. When the optional battery pack is fully charged, you
can operate the computer for approximately 1 hour under the following conditions:
• The battery pack initially has a full charge.
• No peripheral devices are installed.
• The disk/CD-ROM drives run no more than 10% of the time.
Only use batteries that are approved by an authorized dealer. All
batteries are not the same and therefore should not be treated as
such. Using the wrong battery could cause serious damage to your
computer and yourself through toxic emissions.