Set Appliance State:
Mains Power Off
Set Multimeter to DC Volts 
NO Demands
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
Measure the DC voltage between each of the pins on X25 listed below and a suitable earth.
The Voltages should conform approximately to the table below:
Note: Each pin on the PCB connector is numbered.
The Voltages should conform approximately to the table below:
| Pin | DC Volts | Pin 3 (2 Reds) | 23 |
| Pin 4 (Brown) | 23 |
| Pin 5 (Blue) | 23 |
| Pin 10 (Green) | 23 |
| Pin 11 (Black) | 23 |
Note: Each pin on the PCB connector is numbered.
 pcb in situ.gif)
 connector x25 on pcb.gif)
