Set Appliance State:

Gas Off
Isolate Mains Power to appliance as per TOPs P4
The burner door assembly should already be removed from previous test

Observation:

Inspect the burner for restrictions / blockages and good overall condition.
Confirm that the spark gap to the burner surface is approx. 6mm
Note.
1. Do NOT reassemble the appliance if the visual inspections are satisfactory.
2. Always examine any seals or gaskets, replacing where necessary.