Set Appliance State:

Mains Power Off
Set Multimeter to AC Volts Set meter to measure AC Volts
WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure
Mains Power On

Measurement:

Press ON switch and measure voltage between B2 (live)
and A11/A12 (neutral) on PCB, track-side, bottom right.
Mains voltage should be present.
Release ON switch, voltage should fall to 0V.