Keysight N1913B EPM Series Service Manual page 129

Repair Guide 6
Instructions Visual
Step 4
Remove the four screws that are attached to the display from
the display support molding, and then disconnect it from the
display interface board.
Step 5
Lift the display interface board off of the plastic mounting lugs
on the display support molding to separate them from one
another.
Keysight N1913B/N1914B EPM Series Power Meters Service Guide 129