Lenovo THINKPAD E40 Hardware Maintenance Manual page 80

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ThinkPad Edge 14", Edge 15", E40, and E50 Hardware Maintenance Manual
Table 7. Special keys and Fn key combination (continued)
Special key or Fn Description
key combination
Wireless radio Enable or disable the built-in wireless networking features. If you press
control (F9) this key, a list of wireless features is displayed. You can quickly change
the power state of each feature in the list.
Note: To use this function, following device drivers must be installed
on the computer beforehand:
v Power Management driver
v OnScreen Display Utility
v Wireless device drivers
Fn + Spacebar Some models have a backlit keyboard. To illuminate the keyboard in
(some models) less than perfect lighting, press and hold the Fn key and press the
Spacebar. If you turn on the keyboard illumination and then turn the
computer off, put it in sleep or hibernation mode, the keyboard
illumination setting is reset of "Off".