Lenovo 27523KU, Hardware Maintenance Manual, Page: 65 / 218

Chapter 7. Fn key combinations
The following table shows the function of each combination of Fn with a function key.
Table 8. Fn key combinations
Key combination Description
Fn+F1 Reserved.
Fn+F2 Lock your computer.
Fn+F3
Select a power plan (in Windows XP, power scheme) that has been created by Power Manager,
or adjust the power level by using the slider control. When you press this combination, a
panel for selecting a power plan (power scheme) appears.
Notes:
• To use the Fn+F3 key combinations, you must have the ThinkPad PM device driver
installed on the computer.
• If you have logged on with an administrator user ID, and you press Fn+F3, the panel for
selecting a power plan (power scheme) appears. If you have logged on with another user
ID, and you press Fn+F3, the panel does not appear.
• You cannot turn off the computer display by pressing Fn+F3.
Fn+F4
Put the computer in sleep (standby) mode. To return to normal operation, press the Fn key
only, without pressing a function key.
Notes:
• To use the Fn+F4 key combination, you must have the ThinkPad PM device driver installed
on the computer.
• If you want to use the combination to put the computer into hibernation mode or do-nothing
mode (in Windows XP, shut the computer down or show the panel for turning off the
computer), change the settings in the Power Manager.
Fn+F5 Enable or disable the built-in wireless networking features. If you press Fn+F5, a list of wireless
features is displayed. You can quickly change the power state of each feature in the list.
Notes: If you want to use Fn+F5 to enable or disable the wireless features, the following
device drivers must be installed on the computer beforehand:
• Power Management driver
• OnScreen Display Utility
• Wireless device drivers
Fn+F6 Reserved.
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