The new silkscreening on new model ThinkPads do not list four keyboard shortcut functions (Break, SysRq, ScrLK, Pause). The embedded keypad functionality has been removed from the new 6 rows ThinkPad Precision keyboard.
The above symptom is associated with, but not limited to, the following systems:
The supported functions and corresponding keyboard shortcut keys are listed below:
Break (FN + B)
SysRq (FN + S)
ScrLK (FN + K)
Pause (FN + P)