GE AVM4160 Owner's Manual page 4

IMPORTANT SAFETY INSTRUCTIONS.
READ ALL INSTRUCTIONS BEFORE USING.
SAVE THESE INSTRUCTIONS
4
WARNING!
ARCING
If you see arcing, press the CANCEL/OFF button and correct the problem.
Arcing is the microwave term for
sparks in the oven. Arcing is caused by:
Metal or foil touching the side of
the oven.
Turntable ring support not installed
correctly.
Foil not molded to food (upturned
edges act
like antennas).
Metal, such as twist-ties, poultry
pins, or gold-rimmed dishes, in the
microwave.
Recycled paper towels containing
small metal pieces being used in
the microwave.