Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to AC Volts Set meter to measure AC Volts
Gain access to PCB (use Insulation Mat as required)
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Measurement:

locate connector X10, top left corner of the PCB.
With the power switched on ensure there is 240vAC at the connector and that the Polarity is correct using the standard polarity check as detailed in TOPs.