Toshiba Tecra A4 (PTA42) - Manual (Page 80)

User’s Manual 4-25
Operating Basics
■ Close all port covers.
■ Use the carrying case when transporting the computer.
■ When carrying your computer, be sure to hold it securely so that it does
not fall or hit anything.
■ Do not carry your computer by holding protruded portions.
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. Use the Cooling Method item of the Basic
Setup window in TOSHIBA Power Saver.
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.
Maximum
Performance
Turn on the fan first, then if necessary, lower the
CPU processing speed.
Performance Uses a combination of the fan and lowering the
CPU processing speed.
Battery
optimized
Lower the CPU processing speed first, then if
necessary turn on the fan.