Hi all,
My understanding is that there is no 'test' position for that annunciator, its tested along with all the others, with the lights test switch on the P1 panel!
Also, if the Standby Power switch is selected to OFF, the Standby Power OFF light will come on, its supposed to!
Also, the control module sometimes fails, with this result - used to happen in the '74 sometimes!
We always selected the Standby Power switch OFF after every flight, can cause a problem otherwise!
FD
