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)
Selector switch set to OFF
Note.
Slightly move connectors until PCB connection strips
are exposed for voltage measurement
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

Measure for AC voltage across Pins 5 and 6 of connector X1 on the PCB.
Expect mains voltage (230Vac).
Note.
Voltage will only be present for approximately 25 - 30 seconds during start of self-test sequence, to restart self-test sequence power off appliance and power on again.