In low power microwave cooking, oven light may become dim. This is normal.
Radio and TV reception may be interfered when the microwave is operating. This is normal.
It is dangerous to start the microwave without any food inside, be careful.
In cooking, steam may come out of food. Most will get out through the vents, but some may accumulate on a cool place like the door. This is normal.
Step 1: unplug the appliance and wait for it to cool down.
Step 2: Clean the inside of appliance with a damp cloth.
Step 3: Clean the accessories in the usual way in soapy water.
Step 4: The door frame and seal and neighbouring parts must be cleaned carefully with a damp cloth when they are dirty.
1) Never use harsh and abrasive cleaners, scouring pad or steel wool.
2) Never immerse the device in water or any other liquid. The device is not dishwasher proof.