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)
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Measure the voltage between LR with a tap symbol on the yellow connector to the 230V OUT "N" terminal on the white connector on the PCB.
Expect mains voltage.
Is mains voltage present?
Note:
The appearance and layout of the incoming mains connector can vary depending on the PCB version, utilise the appropriate neutral, the preheat connector wiring remains the same.
Expect mains voltage.
Is mains voltage present?
Note:
The appearance and layout of the incoming mains connector can vary depending on the PCB version, utilise the appropriate neutral, the preheat connector wiring remains the same.
Isolate as per TOPs P4
and refit as necessary