Panasonic NN-ST678S, NN-SD698S, NN-ST658W manual Contents

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NN-SD698S / NN-ST678S / NN-ST658W

CONTENTS

 

Page

Page

1 SCHEMATIC DIAGRAM

5

5.5. Inverter power supply (U)

15

2 DESCRIPTION OF OPERATING SEQUENCE

6

5.6. Temperature thermistor

15

2.1. Variable power cooking control

6

6 MEASUREMENTS AND ADJUSTMENTS

16

2.2. Inverter power supply circuit

6

6.1. Adjustment of primary latch switch, secondary latch switch

2.3. Inverter defrost

6

and monitor interlock switch.

16

2.4. Sensor cooking

6

6.2. Measurement of microwave output

16

2.5. Sensor reheat

7

7 PROCEDURE FOR MEASURING MICROWAVE ENERGY

 

2.6. Steam sensor and digital programmer circuit

7

LEAKAGE

17

2.7. Thermistor

7

7.1. Equipment

17

3 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING 8

7.2. Procedure for measuring radiation leakage

17

3.1. Check the grounding

8

7.3. Record keeping and notification after measurement

17

3.2. Inverter warnings

8

7.4. At least once a year, have the radiation monitor checked

3.3. Part replacement.

9

for calibration by its manufacturer.

18

3.4. When the 20A fuse is blown due to the malfunction of the

8 TROUBLESHOOTING GUIDE

19

monitor interlock switch:

9

8.1. (Troubleshooting) Oven stops operation during cooking

19

3.5. Avoid inserting nails, wire etc. through any holes in the

8.2. (Troubleshooting) Other problems

20

unit during operation.

9

8.3. Troubleshooting of inverter circuit (U) and magnetron

21

3.6. Verification after repair

9

8.4. SIMPLE WAY OF H.V. INVERTER/MAGNETRON

 

3.7. Sharp edges

9

TROUBLESHOOTING

22

4 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 10

8.5. H.V.INVERTER BOARD MAIN PARTS LIST

 

4.1. Magnetron

10

(F606Y8M00AP)

22

4.2. Digital programmer circuit (D.P.C)

10

8.6. How to check the semiconductors using an OHM meter 23

4.3. Low voltage transformer and/or power relays (RY1, RY2)

9 EXPLODED VIEW AND PARTS LIST

24

 

11

9.1. EXPLODED VIEW

24

4.4. Fan motor

11

9.2. PARTS LIST

25

4.5. Door assembly

11

9.3. WIRING MATERIALS

27

4.6. Turntable motor

12

9.4. DOOR ASSEMBLY

28

4.7. Steam sensor

12

9.5. ESCUTCHEON BASE ASSEMBLY

29

4.8. Inverter power supply

13

9.6. PACKING AND ACCESSORIES

32

5 COMPONENT TEST PROCEDURE

14

10 DIGITAL PROGRAMMER CIRCUIT

33

5.1. Primary, Secondary Latch Switch interlocks & Power

 

10.1. NN-SD698S

33

Relay RY1

14

10.2. NN-ST678S

35

5.2. Monitor Interlock Switch

14

10.3. NN-ST658W

37

5.3. Magnetron

14

10.4. PARTS LIST

39

5.4. key board membrane (Membrane switch assembly)

14

 

 

4

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Contents NN-SD698S NN-ST678S NN-ST658W NN-SD698S / NN-ST678S / NN-ST658W NN-SD698S / NN-ST678S / NN-ST658W Contents Schematic Diagram Variable power cooking control Inverter power supply circuitDescription of Operating Sequence Inverter defrostSensor reheat ThermistorExplanation of the Auto Sensor Cooking process Balance of cooking time T2 timeCheck the grounding Inverter warningsInverter warning Grounding of the inverter circuit boardPart replacement Verification after repairSharp edges Discharging the high voltage capacitorsDisassembly and Parts Replacement Procedure MagnetronDigital programmer circuit D.P.C To replace membrane key boardLow voltage transformer and/or power relays RY1, RY2 Door assemblyTo re-install components Fan motorTurntable motor Steam sensorInverter power supply Component Test Procedure Monitor Interlock SwitchTemperature thermistor Inverter power supply UTest Measurements and Adjustments Measurement of microwave outputProcedure for Measuring Microwave Energy Leakage EquipmentNN-SD698S / NN-ST678S / NN-ST658W Troubleshooting Guide Troubleshooting Oven stops operation during cookingTroubleshooting Other problems Troubleshooting of inverter circuit U and magnetron Alternate way to troubleshoot oven with AC Ampere meter usedSimple WAY of H.V. INVERTER/MAGNETRON Troubleshooting H.V.INVERTER Board Main Parts List F606Y8M00APProcedure PurposeHow to check the semiconductors using an OHM meter Exploded View and Parts List Exploded ViewParts List Inverter Bracket Wiring Materials Door Assembly Escutcheon Base Assembly NN-SD698SNN-ST678S NN-ST658W Packing and Accessories Digital Programmer Circuit NN-SD698SNN-SD698S / NN-ST678S / NN-ST658W NN-ST678S NN-SD698S / NN-ST678S / NN-ST658W NN-ST658W NN-SD698S / NN-ST678S / NN-ST658W NN-SD698S 01/08
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NN-ST658W, NN-ST678S, NN-SD698S specifications

The Panasonic NN-SD688S and NN-SD698S are two high-performance microwave ovens designed to meet the needs of modern households. With cutting-edge technology and innovative features, these models offer a convenient way to heat, cook, and defrost a variety of foods.

At the heart of both models is the Inverter Technology, which provides consistent and precise cooking power throughout the microwave's cooking time. Unlike traditional microwaves that use a turn-on, turn-off method to regulate cooking power, the inverter system delivers a steady stream of energy. This allows for evenly cooked meals, reduces the chances of overcooking, and ensures delicate items like fish and vegetables retain their texture and flavor.

Both the NN-SD688S and NN-SD698S boast a spacious 1.2 cubic feet capacity, allowing users to easily accommodate large dishes and multiple servings. The sleek and modern stainless steel design ensures these microwaves fit seamlessly into any kitchen décor, while also being easy to clean and maintain.

The microwaves come equipped with an array of smart cooking features, including the Sensor Cook function. This technology automatically detects the steam released from food and adjusts cooking time and power levels accordingly. This feature takes the guesswork out of microwave cooking, ensuring perfectly cooked meals without constant monitoring.

Another standout feature is the Keep Warm function, which helps maintain food temperature without cooking it further. This can be especially useful when preparing multiple dishes or when meals need to be served at different times.

Both models also include a variety of pre-programmed cooking options, providing quick access to commonly prepared items. With one-touch settings for popcorn, pizza, and more, users can select their desired food type and let the microwave handle the rest.

In terms of safety, Panasonic has integrated a child safety lock to prevent accidental operation, which offers peace of mind for families with young children.

In summary, the Panasonic NN-SD688S and NN-SD698S microwaves reflect the brand's commitment to innovative cooking solutions. With features such as Inverter Technology, Sensor Cook, and a sleek design, these models are perfect for those seeking efficiency, convenience, and ease of use in their kitchen appliances. Whether reheating leftovers, cooking fresh meals, or defrosting ingredients, these microwaves offer versatility and reliability, making them essential tools for any modern kitchen.