Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove connector HV2 from the PCB
Measurement:
Test 1:
Measure the resistance between pin 3 (purple) and pin 4 (brown) on HV2.
Resistance should be greater than 1M Ohm (or O.L on meter).
Test 2:
Measure the resistance between pin 4 (brown) on HV2 to a suitable earth point.
Resistance should be greater than 1M Ohm (or O.L on meter).
Repeat these tests between pin 3 to pins 5, 6, and 7.
Are the resistances measured as expected?
Measure the resistance between pin 3 (purple) and pin 4 (brown) on HV2.
Resistance should be greater than 1M Ohm (or O.L on meter).
Test 2:
Measure the resistance between pin 4 (brown) on HV2 to a suitable earth point.
Resistance should be greater than 1M Ohm (or O.L on meter).
Repeat these tests between pin 3 to pins 5, 6, and 7.
Are the resistances measured as expected?
Isolate as per TOPs P4
and refit as necessary