Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to DC Volts 
Gain access to PCB (use Insulation Mat as required)
Remove connector CN10 from the PCB and make safe
Remove connector CN10 from the PCB and make safe
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Measure the DC voltage across pin 4 at
CN10 to a suitable earth connection.
Voltage should be approximately 28V DC.
CN10 to a suitable earth connection.
Voltage should be approximately 28V DC.
Isolate as per TOPs P4
and refit as necessary