Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Slide back the rubber cover from the EMC filter terminals
Remove the connectors from the EMC filter terminals

Measurement:

Measure the resistance between the 2 upper terminals of the EMC filter.
Expect approximately 1MOhm.
Is the resistance measured as expected?