Chapter 6. Fn Key Combinations - Lenovo ThinkPad L420 Hardware Maintenance Manual

Chapter 6. Fn key combinations

The following table shows the function of each combination of Fn with a function key.
Table 7. Fn key combinations
Key combination Description
Fn+F1 Reserved.
Fn+F2 Lock the 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:
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:
Fn+F5 Enable or disable the built-in wireless networking features and the Bluetooth 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 the feature specified in IEEE standard 802.11, the
following device drivers must be installed on the computer beforehand:
• ThinkPad Power Management driver
• OnScreen Display Utility
• Wireless device drivers
Fn+F6 Change the camera settings and the setting of the microphone mute button. When you press
Fn+F6, the camera setting window is opened.
Note: For Windows XP models, the setting of the microphone mute button cannot be changed.
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1. To use the Fn+F3 key combination, you must have the ThinkPad PM device driver
installed on the computer.
2. If you have logged on with an administrator user ID in Windows XP, and you press Fn+F3,
the window for selecting a power scheme appears. If you have logged on with another
user ID in Windows XP, and you press Fn+F3, the window does not appear.
3. You cannot turn off the computer display by pressing Fn+F3.
1. To use the Fn+F4 key combination, you must have the ThinkPad PM device driver
installed on the computer.
2. 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.
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