IBM ThinkPad 755CX Manual page 65

Key Combination Feature
Reserved
Fn F8
+
Reserved
Fn F9
+
Reserved
Fn
+
Power mode
Fn
+
switching
Hibernation mode
Fn
+
Dock I speaker
Fn PgUp
+
volume up
Dock I speaker
Fn PgDn
+
volume down
Meaning
—
—
—
When this key combination is pressed during battery-power operation, the
power-management (power-saving) mode changes as follows. See page 37.
The AC mode is used when the AC Adapter is attached. The Fuel-Gauge
program displays the current-power option.
Places the computer in hibernation mode. See "Hibernation Mode" on
page 57 for more information.
Increases the speaker volume of the Dock I attached to the computer.
Decreases the speaker volume of the Dock I attached to the computer.
Using the Fn Key Function
Chapter 3. Operating Your Computer
49