Power 3-9
3.2 Power Management
This notebook has a built-in power management unit that monitors system
activity. System activity refers to any activity involving one or more of the
following devices: keyboard, mouse, floppy drive, hard disk, peripherals
connected to the serial and parallel ports, and video memory. If no activity
is detected for a specified period of time (called an inactivity time-out), the
system switches to one of the power-saving modes to conserve energy.
These power-saving modes are display standby mode, hard disk standby,
and two sleep modes (standby and hibernation).
The BIOS Utility allows you to specify the inactivity time-out.
The power management function may not work when the
cursor is emulated by software such as Chinese system (ET
v3.1), Japanese system (DOS/V), Word for Windows, etc.

3.2.1 Power Management Modes

Display Standby Mode
Screen activity is determined by the keyboard, the built-in touchpad, and an
external PS/2 pointing device. If these devices are idle for the period
specified by the Display Standby Timer, the display shuts off until you press
a key or move the touchpad or external mouse.
We strongly recommend you to enable the Display Standby
Timer with a shorter time interval to prolong your battery life.
“Automatic Dim” Feature
The notebook has a unique “automatic dim” power saving feature. When
the notebook is using AC power and you disconnect the AC adapter from
the notebook, the system “decides” whether or not to automatically dim the
LCD backlight to save power.