I have a matsui 320

Question

i have a matsui 320 microwave oven, had it for some years now and can't find manual, we had power cut lately so microwave went off, i just cannot remember how to set it back up. any ideas now . if i press clock and then put time in the two dots inbetween the time keep flashing, i remember i had to get them to stop flashing to be able to cook but forgot how to do it. any ideas please