1 SCHEMATIC DIAGRAM 5
2 DESCRIPTION OF OPERATING SEQUENCE
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2.1. Variable power cooking control
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2.2. Inverter power supply circuit NEW H.V.
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2.3. Inverter defrost, Auto menu & Auto reheat
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3 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING
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3.1. Check the grounding
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3.2. Inverter warnings
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3.3. Part replacement.
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3.4. When the 10A fuse is blown due to the operation of the
short switch:
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3.5. Avoid inserting nails, wire etc. through any holes in the
unit during operation.
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3.6. Confirm after repair
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3.7. Sharp edges
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4 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE
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4.1. Magnetron
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4.2. Digital programmer circuit (D.P.C) and membrane key
board.
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4.3. Low voltage transformer and/or power relays (RY1, RY2)
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4.4. Fan motor
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4.5. Door assembly
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4.6. Turntable motor
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4.7. Quartz heater
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4.8. H.V. Inverter Power Supply
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5 COMPONENT TEST PROCEDURE
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5.1. Primary latch switch (door switch and power relay B)
interlocks.
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5.2. Short switch & monitor
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5.3. Magnetron
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5.4. Membrane key board (Membrane switch assembly)
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5.5. Inverter power supply (U)
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5.6. Temperature thermistor
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6 MEASUREMENTS AND ADJUSTMENTS
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6.1. Adjustment of Primary latch switch, Secondary latch
switch and Short switch.
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6.2. Measurement of microwave output
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7 TROUBLESHOOTING GUIDE
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7.1. (Trouble) Oven stops operation during cooking
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7.2. Trouble related to Digital Programmer Circuit
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7.3. Troubleshooting of inverter circuit (U) and magnetron
NEW H.V.
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7.4. Simple way of H.V. Inverter/magnetron troubleshooting
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7.5. How to check the semiconductors using an OHM meter
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8 EXPLODED VIEW AND PARTS LIST
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8.1. EXPLODED VIEW
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8.2. PARTS LIST
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8.3. DOOR ASSEMBLY
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8.4. WIRING MATERIALS
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8.5. ESCUTCHEON BASE ASSEMBLY
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8.6. PACKING AND ACCESSORIES
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8.7. H.V. INVERTER MAIN PARTS LIST
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9 DIGITAL PROGRAMMER CIRCUIT
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9.1. SCHEMATIC DIAGRAM (NN-GD376S)
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9.2. SCHEMATIC DIAGRAM (NN-GD366M, GD356W)
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9.3. PARTS LIST
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CONTENTS
Page Page
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NN-GD376S / NN-GD366M / NN-GD356W
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