Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Disconnect connector X1 from the PCB
Measurement:
Test 1:
Measure the resistance between the brown wire marked L2 (next to earth wire) and blue wire marked N on the mains inlet plug.
Resistance should be greater than 80 Ohms.
Test 2:
Measure between the brown wire marked L2 and the earth on the mains inlet plug
Resistance should be greater than 1M Ohm.
Test 3:
Measure between the blue wire marked N and the earth on the mains inlet plug
Resistance should be greater than 1M Ohm.
Measure the resistance between the brown wire marked L2 (next to earth wire) and blue wire marked N on the mains inlet plug.
Resistance should be greater than 80 Ohms.
Test 2:
Measure between the brown wire marked L2 and the earth on the mains inlet plug
Resistance should be greater than 1M Ohm.
Test 3:
Measure between the blue wire marked N and the earth on the mains inlet plug
Resistance should be greater than 1M Ohm.
Isolate as per TOPs P4
and refit as necessary