Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to AC Volts 
Gain access to PCB (use Insulation Mat as required)
Remove electrical connector to spark generator and make safe
Remove electrical connector to spark generator and make safe
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Reset appliance if required.
Measure for AC voltage across pin 1 (brown lead) connector X21 and a suitable earth connection.
Expect approximately 5 Vac or greater.
Is the voltage measured as expected?
Measure for AC voltage across pin 1 (brown lead) connector X21 and a suitable earth connection.
Expect approximately 5 Vac or greater.
Is the voltage measured as expected?
Isolate as per TOPs P4
and refit as necessary