Heat Dispersal - Toshiba Satellite Pro L450 Series Manual

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Always use a suitable carry case when transporting the computer.
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When carrying your computer, be sure to hold it securely so that it does
not fall or hit anything.
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Do not carry your computer by holding any of its protruding elements.

Heat dispersal

To protect from overheating, the CPU has an internal temperature sensor. If
the computer's internal temperature rises to a certain level, the cooling fan
is turned on or the processing speed is lowered. You can select whether to
control the CPU temperature by turning on the fan first, then if necessary,
lowering the CPU speed. Or, by lowering the CPU speed first, then if
necessary, turning on the fan. These functions are controlled within the
Power Options.
When the CPU temperature falls to a normal range, the fan is turned off
and the CPU operation returns to standard speed.
If the CPU temperature reaches an unacceptably high level with either
setting, the system automatically shuts down to prevent damage. Data in
memory will be lost.
User's Manual
Operating Basics
4-33