IBM MT 2643, Hardware Manual

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Related service information
Power management features
To reduce power consumption, the computer has three
power management modes: standby, suspend, and
hibernation.
Standby mode:
In standby mode, the following
occurs:
The LCD backlight turns off.
The hard disk drive motor stops.
The speaker is muted.
Note: Standby mode in Windows 98 is called suspend
mode in Windows 95.
To enter standby mode, press Fn
+
F3. To end standby
mode and resume normal operation, press any key.
Suspend mode:
When the computer enters suspend
mode, the following events occur in addition to what occurs
in standby mode:
The LCD is powered off.
The hard disk drive is powered off.
The CPU stops.
Suspend mode in Windows 95 is called standby mode in
Windows 98.
You can cause the computer to enter suspend mode by
doing any of the following:
Press Fn
+
F4.
Close the LCD cover. (To prevent the computer from
entering suspend mode when the LCD is closed, click
Will not suspend even if LCD is closed in the
Power Management Properties window. Then only
the LCD turns off.)
Select the Suspend button in the Fuel Gauge
program.
In certain circumstances, the computer goes into suspend
mode automatically:
If a “suspend time” has been set on the timer, and the
user does not do any operation with the keyboard, the
TrackPoint, the hard disk, the parallel connector, or
the diskette drive within the time set.
If the ac adapter is plugged in.
If the battery indicator blinks orange, indicating that
the battery power is low. (Alternatively, if Hibernate
when battery becomes low has been selected in the
“Power Management Properties” window, the
computer goes into hibernation mode.)
Note: Even if you don't set the low-battery alarm, the
charge indicator lets you know that the battery is
low, and then the ThinkPad automatically enters
24
ThinkPad 570 and 570E Hardware Maintenance
Manual