Table Of Contents - Panasonic NN-SD698S Service Manual

NN-SD698S / NN-ST678S / NN-ST658W
CONTENTS
1 SCHEMATIC DIAGRAM
2 DESCRIPTION OF OPERATING SEQUENCE
2.1. Variable power cooking control
2.2. Inverter power supply circuit
2.3. Inverter defrost
2.4. Sensor cooking
2.5. Sensor reheat
2.6. Steam sensor and digital programmer circuit
2.7. Thermistor
3 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING 8
3.1. Check the grounding
3.2. Inverter warnings
3.3. Part replacement.
3.4. When the 20A fuse is blown due to the malfunction of the
monitor interlock switch:
3.5. Avoid inserting nails, wire etc. through any holes in the
unit during operation.
3.6. Verification after repair
3.7. Sharp edges
4 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 10
4.1. Magnetron
4.2. Digital programmer circuit (D.P.C)
4.3. Low voltage transformer and/or power relays (RY1, RY2)
4.4. Fan motor
4.5. Door assembly
4.6. Turntable motor
4.7. Steam sensor
4.8. Inverter power supply
5 COMPONENT TEST PROCEDURE
5.1. Primary, Secondary Latch Switch interlocks & Power
Relay RY1
5.2. Monitor Interlock Switch
5.3. Magnetron
5.4. key board membrane (Membrane switch assembly)
Page
5 5.5. Inverter power supply (U)
6 5.6. Temperature thermistor
6 6 MEASUREMENTS AND ADJUSTMENTS
6 6.1. Adjustment of primary latch switch, secondary latch switch
6 and monitor interlock switch.
6 6.2. Measurement of microwave output
7 7 PROCEDURE FOR MEASURING MICROWAVE ENERGY
7 LEAKAGE
7 7.1. Equipment
7.2. Procedure for measuring radiation leakage
8 7.3. Record keeping and notification after measurement
8 7.4. At least once a year, have the radiation monitor checked
9 for calibration by its manufacturer.
8 TROUBLESHOOTING GUIDE
9 8.1. (Troubleshooting) Oven stops operation during cooking 19
8.2. (Troubleshooting) Other problems
9 8.3. Troubleshooting of inverter circuit (U) and magnetron
9 8.4. SIMPLE WAY OF H.V. INVERTER/MAGNETRON
9 TROUBLESHOOTING
8.5. H.V.INVERTER BOARD MAIN PARTS LIST
10 (F606Y8M00AP)
10 8.6. How to check the semiconductors using an OHM meter 23
9 EXPLODED VIEW AND PARTS LIST
11 9.1. EXPLODED VIEW
11 9.2. PARTS LIST
11 9.3. WIRING MATERIALS
12 9.4. DOOR ASSEMBLY
12 9.5. ESCUTCHEON BASE ASSEMBLY
13 9.6. PACKING AND ACCESSORIES
14 10 DIGITAL PROGRAMMER CIRCUIT
10.1. NN-SD698S
14 10.2. NN-ST678S
14 10.3. NN-ST658W
14 10.4. PARTS LIST
14
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