Tapio Antero Osala posted an answer for this Magic Chef MCD1311ST Microwave Oven:
"None of these works in my oven...."
Tapio Antero Osala posted an answer for this Sharp R-1480 Microwave Oven:
"My old AMS(?) mircowave:
Cancel>Clock>Cancel > set the time 1-2-3-4
> Clock>..."