Set Appliance State:

Mains Power Off
Set Multimeter to DC Volts Set meter to measure DC Volts
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Measurement:

Measure for DC volts across pin 3 (pink) CN203 and pin 3 (red) CN205 main PCB.
Expected voltage 12Vdc.
Is voltage measured as expected?