Lenovo ThinkPad T540p Hardware Maintenance Manual page 50

Table 8. Function keys (continued)
Function key and key
combination
+
+
Fn+B
Fn+P
Fn+S
Fn+K
44
Hardware Maintenance Manual
Description
Press Fn+Esc to enable or disable the Fn Lock function and switch between default
mode and legacy mode of using the function keys.
• When the Fn Lock function is disabled: The Fn Lock indicator is off (default mode).
To initiate the special function of each function key, press the corresponding function
key directly. To input F1- F12, press the Fn key and the corresponding function key.
• When the Fn Lock function is enabled: The Fn Lock indicator turns on (legacy
mode). To input F1- F12, press the corresponding function key directly. To initiate
the special function of each function key, press the Fn key and the corresponding
function key.
Controls the keyboard backlight.
There are three modes for the keyboard backlight: Off, Low, and High. Press
Fn+Spacebar to change the modes of the keyboard backlight.
Has the same function as the Break key on a conventional keyboard.
Has the same function as the Pause key on a conventional keyboard.
Has the same function as the SysRq key on a conventional keyboard.
Has the same function as the ScrLK key on a conventional keyboard.