Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Remove the Programmer from its backplate.
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

Check the voltage on the incoming supply to the Programmer.
Expect Mains voltage.
Note: The colour and position of the wires will vary
between systems and components.