This document is the instruction manual for Panasonic NN-K542 MF/NN-K542 WF NN-K5440 MF/NN-K5441 JF/NN-K5442 MF microwave oven. It introduces the microwave oven placement, specifications, cooking precautions, function indicators, microwave cooking utensils, control panel, setting/canceling child safety lock, time cooking/automatic cooking, automatic cooking/general cooking techniques, timer setting/defrost setting, defrosting, thin-plate baking/combination baking, microwave heating principle, food characteristics, microwave oven maintenance, and about repair services.