Lenovo K49 Notebook - Manual (Page 46)

Table 2. Function key combinations (continued)
Key combination Description
Fn+Insert Enables or disables the numeric keypad.
Fn+Delete Enables or disables the scroll lock function.
Fn+PrtSc Activates the system request.
Fn+Pause Activates the break function.
Fn + up/down arrow Increases or decreases the display brightness level.
Fn + left/right arrow Decreases or increases the sound volume.
40 Hardware Maintenance Manual