NN-SD697S / NN-SD677S / NN-SD667S / NN-SN677S / NN-SN667 / NN-SN657S / NN-SA647 / NN-ST677S / NN-ST657W CONTENTS Page Page 1 SCHEMATIC DIAGRAM 4.3. Record keeping and notification after measurement 1.1. APH 4.4. At least once a year, have the radiation monitor checked 1.2.
NN-SD697S / NN-SD677S / NN-SD667S / NN-SN677S / NN-SN667 / NN-SN657S / NN-SA647 / NN-ST677S / NN-ST657W 2 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING Unlike many other appliances, the microwave oven is a high voltage, high current device. It is free from danger in ordinary use, though extreme care should be taken during repair.
NN-SD697S / NN-SD677S / NN-SD667S / NN-SN677S / NN-SN667 / NN-SN657S / NN-SA647 / NN-ST677S / NN-ST657W 2.6. Confirm after repair Discharging the high voltage capacitors WARNING 1. After repair or replacement of parts, make sure that the There is high voltage present with high current capabilities screws of the oven, etc.
NN-SD697S / NN-SD677S / NN-SD667S / NN-SN677S / NN-SN667 / NN-SN657S / NN-SA647 / NN-ST677S / NN-ST657W 3 MEASUREMENTS AND ADJUSTMENTS 3.1. Adjustment of primary latch switch, secondary latch switch and short switch. 1. Mount the Primary latch switch, the Secondary latch switch and the Short switch to the door hook assembly as shown in ILL.
NN-SD697S / NN-SD677S / NN-SD667S / NN-SN677S / NN-SN667 / NN-SN657S / NN-SA647 / NN-ST677S / NN-ST657W 4 PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE 4.2.1. Measurement with the outer panel removed. Whenever you replace the magnetron, measure for radiation leakage before the outer panel is installed and after all necessary components are replaced or adjusted.
NN-SD697S / NN-SD677S / NN-SD667S / NN-SN677S / NN-SN667 / NN-SN657S / NN-SA647 / NN-ST677S / NN-ST657W 5 SIMPLE WAY OF H.V. INVERTER/MAGNETRON TROUBLESHOOTING Purpose: Simple way (3/37 seconds rule) of identifying whether it’s Magnetron, Inverter, or others. Set-up: The unit under question is connected through the Ammeter as shown below.
NN-SD697S / NN-SD677S / NN-SD667S / NN-SN677S / NN-SN667 / NN-SN657S / NN-SA647 / NN-ST677S / NN-ST657W 7.2. PARTS LIST NOTE: 1. When ordering replacement part(s), please use part number(s) shown in this part list. Do not use description of the part.