Lenovo ThinkPad T420si Hardware Maintenance Manual - Page 67
Fn key combinations
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Chapter 6. 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 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. 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, 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. 3. 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. 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. 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. Note: 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 Window XP models, the setting of the microphone mute button cannot be changed. Fn+F7 Apply a presentation scheme directly, with no need to start Presentation Director. To disable this function and use the Fn+F7 key combination for switching a display output location, start Presentation Director, and change the settings. Note: If the computer is an Windows 7 model, it does not support presentation schemes, but the Fn+F7 combination is available for switching a display output location. For Windows 7: Switch a display output location • Computer display only (LCD) • Computer display and external monitor (same image) • Computer display and external monitor (extended desktop) © Copyright Lenovo 2012 61