Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to DC Volts 
Unclip, disconnect electrically and remove display from appliance
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Measure the DC voltage from the main PCB to the display PCB.
Voltages should be approximately as below:
Voltages should be approximately as below:
| Test Pins | Approx. Voltage |
| Pin 1 to Pin 4 | 4.6V DC | Pin 3 to Pin 4 | 23V DC | Pin 6 to Pin 4 | 4.6V DC |
Isolate as per TOPs P4
and refit as necessary