Keysight N1913B EPM Series Service Manual page 131

Repair Guide 6
Instructions Visual
Step 10
Release the metal tabs holding the EMI Screen to the front
panel sub-frame, and separate them from one another.
Step 11
Disengage the rubber tabs that are attached to the key flex
circuit from the keymat, and carefully lift it out.
Step 12
Remove the EMI shielded window and the keymat from the
front panel sub-frame.
Keysight N1913B/N1914B EPM Series Power Meters Service Guide 131