Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Disconnect connector HV2 from the PCB
Measurement:
Test 1:
Measure the resistance between pin 1 (brown) and pin 2 (blue) on HV2.
Resistance should be greater than 1M Ohm (or O.L on meter).
Test 2:
Measure the resistance between pin 1 (brown) on HV2 to a suitable earth point.
Resistance should be greater than 1M Ohm (or O.L on meter).
Are the resistances measured as expected?
Measure the resistance between pin 1 (brown) and pin 2 (blue) on HV2.
Resistance should be greater than 1M Ohm (or O.L on meter).
Test 2:
Measure the resistance between pin 1 (brown) on HV2 to a suitable earth point.
Resistance should be greater than 1M Ohm (or O.L on meter).
Are the resistances measured as expected?
Isolate as per TOPs P4
and refit as necessary