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Power Management Features
Three power management modes are provided by the
computer to reduce power consumption and prolong
battery power.
Standby Mode
In standby mode the following occurs:
The LCD backlight turns off.
The hard disk motor stops.
Events that cause the computer to enter standby mode:
Standby is requested by the Fn key (Fn+F3).
There has been no activity and auto-standby was set
in the ThinkPad Configuration program.
The computer exits standby mode and resumes operation
when any key is pressed.
Suspend Mode
In suspend mode, the following occurs, in addition to
standby mode:
The LCD is powered off.
The hard disk is powered off.
The CPU stops.
Events that cause the computer to enter suspend mode:
Suspend mode is requested by the Fn key (Fn+F4).
The LCD is closed.
The specified time has elapsed from the last
operation with the keyboard, mouse, hard disk drive,
parallel connector, or diskette drive; or the AC
Adapter is plugged in. The time is specified by
Suspend Timer
in the ThinkPad Configuration
program.
The battery condition is low. The battery power
indicator blinks orange.
In the ThinkPad Configuration program, the computer
can be set to “Hibernate when battery becomes low.”
The default setting is suspend.
Either the PS2 OFF or PS2 SUSpend command is
set in the ThinkPad Configuration program.
Notes:
1. In the ThinkPad Configuration program, the computer
can be set to “Will not suspend even if LCD is
closed.”
2. In the ThinkPad Configuration program, the computer
can be set to “suspend/hibernate while docked.”
3. When the computer is powered with ac power and is
used with one of the communication PC Cards, the
computer enters
standby mode
; the PC Card and
application program remain active.
4. While the computer is attached to a Dock I, the
540 IBM Mobile Systems HMM