Panasonic NE-2157CR, NE-1757CR Cautions To Be Observed When Troubleshooting, Check the grounding

NE-1257R/NE-1257CR / NE-1757R/NE-1757CR / NE-2157R/NE-2157CR / NE-1258R

17 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING

Unlike many other appliances, the microwave oven is high- voltage, high-current equipment. Though it is free from danger in ordinary use, extreme care should be taken during repair.

17.1. Check the grounding

Do not operate on a 2-wire extension cord. The microwave oven is designed to be used in a completely grounded condition. It is imperative, therefore, to make sure it is properly grounded before beginning repair work.

17.2.If the door lock, the door switch, the door seal or the door develops a malfunction, be sure not to operate the oven until complete repairs are made.

If the oven is operated with any of these parts in imperfect condition, hazardous microwave leakage might occur.

17.3.Warning about the electric charge in the high voltage capacitor

For about 30 seconds after the oven is turned off, an electric charge remains in the high voltage capacitor. When replacing or checking parts, remove the power plug from the outlet, wait 30 seconds and short the terminal of the high voltage capacitor (terminal of lead wire from diode) to chassis ground with an insulated jumper lead wire or an insulated handle screwdriver discharge.

17.4.When parts must be replaced, always remove the power plug from the outlet, and discharge the high voltage capacitor.

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