Panasonic NN-SD698S Service Manual
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Panasonic NN-SD698S Service Manual

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NN-SD698S
NN-ST678S
NN-ST658W
RPH (LATIN AMERICA)
RUH (MEXICO)
© 2008 Panasonic Home Appliances Microwave
Oven (Shanghai) Co., Ltd. All rights reserved.
Unauthorized copying and distribution is a violation
of law.
ORDER NO.PHAMOS0801002C3

Microwave Oven

E1

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Summary of Contents for Panasonic NN-SD698S

  • Page 1: Microwave Oven

    ORDER NO.PHAMOS0801002C3 Microwave Oven NN-SD698S NN-ST678S NN-ST658W RPH (LATIN AMERICA) RUH (MEXICO) © 2008 Panasonic Home Appliances Microwave Oven (Shanghai) Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.
  • Page 2 NN-SD698S / NN-ST678S / NN-ST658W...
  • Page 3 NN-SD698S / NN-ST678S / NN-ST658W...

  • Page 4: Table Of Contents

    NN-SD698S / NN-ST678S / NN-ST658W CONTENTS Page Page 1 SCHEMATIC DIAGRAM 5.5. Inverter power supply (U) 2 DESCRIPTION OF OPERATING SEQUENCE 5.6. Temperature thermistor 2.1. Variable power cooking control 6 MEASUREMENTS AND ADJUSTMENTS 2.2. Inverter power supply circuit 6.1. Adjustment of primary latch switch, secondary latch switch 2.3.

  • Page 5: Schematic Diagram

    NN-SD698S / NN-ST678S / NN-ST658W 1 SCHEMATIC DIAGRAM...

  • Page 6: Description Of Operating Sequence

    NN-SD698S / NN-ST678S / NN-ST658W 2 DESCRIPTION OF OPERATING SEQUENCE 2.1. Variable power cooking 2.3. Inverter defrost control When the Auto Control feature is selected and the Start pad is tapped: High Voltage Inverter Power Supply (U) controls output power 1.

  • Page 7: Sensor Reheat

    NN-SD698S / NN-ST678S / NN-ST658W Explanation of the Auto Sensor Cooking process 2.5. Sensor reheat 1. During the first 10 second period there is no microwave Auto Sensor Reheat is a quick and easy way to reheat activity. When calculating the T2 time by using the refrigerated and room temperature foods.

  • Page 8: Cautions To Be Observed When Troubleshooting

    NN-SD698S / NN-ST678S / NN-ST658W 3 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.

  • Page 9: Part Replacement

    NN-SD698S / NN-ST678S / NN-ST658W Discharging the high voltage capacitors 3.6. Verification after repair 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. are neither loosen or missing.

  • Page 10: Disassembly And Parts Replacement Procedure

    NN-SD698S / NN-ST678S / NN-ST658W 4 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 4.1. Magnetron 4.2. Digital programmer circuit (D.P.C) 1. Discharge high voltage charge. 2. Remove 1 screw holding air guide A on the oven cavity. CAUTION: 3. Remove 1 screw holding air guide A on the magnetron.

  • Page 11: Low Voltage Transformer And/Or Power Relays (Ry1, Ry2)

    NN-SD698S / NN-ST678S / NN-ST658W 4.3. Low voltage transformer 4.5. Door assembly and/or power relays (RY1, 1. Remove door C from door E by carefully pulling outward, RY2) starting from upper right hand corner using a flat blade screwdriver. CAUTION: 2.

  • Page 12: Turntable Motor

    NN-SD698S / NN-ST678S / NN-ST658W 4.6. Turntable motor 4.7. Steam sensor 1. Remove the motor cover by breaking off at the 8 spots 1. Disconnect connector CN2 from digital programmer circuit indicated by arrows with a cutter or the like.

  • Page 13: Inverter Power Supply

    NN-SD698S / NN-ST678S / NN-ST658W 6. Press 1 encircled locking tab and then slide 4 locking tabs 4.8. Inverter power supply of Inverter bracket at the bottom of the base in direction of CAUTIONS arrows. 1. Always leave the grounding plate in place.

  • Page 14: Component Test Procedure

    NN-SD698S / NN-ST678S / NN-ST658W 5 COMPONENT TEST PROCEDURE 5.3. Magnetron WARNING 1. High voltage is present at the output terminals of the High Voltage Inverter (U) including aluminum heat sink during any cook cycle. Continuity checks can only indicate an open filament or a 2.

  • Page 15: Inverter Power Supply (U)

    NN-SD698S / NN-ST678S / NN-ST658W 5.5. Inverter power supply (U) 5. Program oven at High power for 1 minute and press [Start] DO NOT try to REPAIR H.V. Inverter power supply (U). pad. Replace complete H.V. Inverter(U) Unit. a. After approximately 3 seconds, oven stops operating.

  • Page 16: Measurements And Adjustments

    NN-SD698S / NN-ST678S / NN-ST658W 6 MEASUREMENTS AND ADJUSTMENTS 6.1. Adjustment of primary latch switch, secondary latch switch and monitor interlock switch. 1. Mount the Primary latch switch, the Secondary latch switch and the Monitor interlock switch to the door hook assembly as shown in illustration.

  • Page 17: Procedure For Measuring Microwave Energy

    NN-SD698S / NN-ST678S / NN-ST658W 7 PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE 7.2.1. 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. Special care should be taken in measuring around the magnetron.

  • Page 18: At Least Once A Year, Have The Radiation Monitor Checked For Calibration By Its Manufacturer

    NN-SD698S / NN-ST678S / NN-ST658W 7.4. At least once a year, have the radiation monitor checked for calibration by its manufacturer.

  • Page 19: Troubleshooting Guide

    NN-SD698S / NN-ST678S / NN-ST658W 8 TROUBLESHOOTING GUIDE DANGER: HIGH VOLTAGES 1. DO NOT RE-ADJUST PRESET CONTROL on the H.V.Inverter (U). It is very dangerous to repair or adjust without proper test equipment because this circuit generates very large current and high voltage. Operating a misaligned inverter circuit is dangerous.

  • Page 20: Troubleshooting) Other Problems

    NN-SD698S / NN-ST678S / NN-ST658W 8.2. (Troubleshooting) Other problems SYMPTOM CAUSE CORRECTIONS 1. Oven is dead. 1. Open or loose lead wire harness Fuse is OK. 2. Open thermal cutout / thermistor Check thermal cutout is defective. No display and no operation at all.

  • Page 21: Troubleshooting Of Inverter Circuit (U) And Magnetron

    NN-SD698S / NN-ST678S / NN-ST658W 8.3. Troubleshooting of inverter circuit (U) and magnetron This oven is programmed with a self diagnostics failure code system which will help for troubleshooting. H95, H97, H98 and H99 are the provided failure codes to indicate magnetron and inverter circuit problem areas. This section explains failure codes of H95, H97, H98 and H99.

  • Page 22: Simple Way Of H.v. Inverter/Magnetron

    NN-SD698S / NN-ST678S / NN-ST658W 8.4. 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. Procedure: Follow the matrix table below to identify the problem source.

  • Page 23: How To Check The Semiconductors Using An Ohm Meter

    NN-SD698S / NN-ST678S / NN-ST658W 8.6. How to check the semiconductors using an OHM meter...

  • Page 24: Exploded View And Parts List

    NN-SD698S / NN-ST678S / NN-ST658W 9 EXPLODED VIEW AND PARTS LIST 9.1. EXPLODED VIEW...

  • Page 25: Parts List

    NN-SD698S / NN-ST678S / NN-ST658W 9.2. 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. 2. Important safety notice: Components identified by mark have special characteristics important for safety.
  • Page 26 NN-SD698S / NN-ST678S / NN-ST658W Ref. No. Part No. Part Name & Description Pcs/Set Remarks F65856K50AP INVERTER BRACKET F03347D00RP MENU LABEL SD698S F03347G50RP MENU LABEL ST678S,ST658W F40264T60APG AIR GUIDE B F00066G00RP CAUTION LABEL SD698S RPH,ST678S RPH...

  • Page 27: Wiring Materials

    NN-SD698S / NN-ST678S / NN-ST658W 9.3. WIRING MATERIALS Ref. No. Part No. Part Name & Description Pcs/Set Remarks F030A7D00RP LEAD WIRE HARNESS F030E5L00AP H.V.LEAD WIRE F03537D00AP LEAD WIRE HARNESS U (INCLUDING THERMISTOR)

  • Page 28: Door Assembly

    NN-SD698S / NN-ST678S / NN-ST658W 9.4. DOOR ASSEMBLY Ref. No. Part No. Part Name & Description Pcs/Set Remarks F30186P40AG DOOR KEY A SD698S,ST678S F30184Y30XN DOOR KEY A ST658W F301A8X00SCP DOOR A (U) SD698S F301A8M00SAP DOOR A (U) ST678S F302K5L00AP DOOR E (U)

  • Page 29: Escutcheon Base Assembly

    NN-SD698S / NN-ST678S / NN-ST658W 9.5. ESCUTCHEON BASE ASSEMBLY 9.5.1. NN-SD698S Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603L8X00RP D.P.CIRCUIT (AU) SD698S F603Y8X00RP D.P.CIRCUIT (DU) SD698S F800L8X00SRP ESCUTCHEON BASE (U) SD698S F66164W20AP FLAT CABLE SD698S F82988X00SAP BUTTON...
  • Page 30 NN-SD698S / NN-ST678S / NN-ST658W 9.5.2. NN-ST678S Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603L8V60RP D.P.CIRCUIT (AU) ST678S F800L8V60SRP ESCUTCHEON BASE (U) ST678S F80725Y00SAP DOOR OPENING BUTTON (U) ST678S F82565Y00AP DOOR OPENING LEVER ST678S F80375K00AP COOK BUTTON SPRING...
  • Page 31 NN-SD698S / NN-ST678S / NN-ST658W 9.5.3. NN-ST658W Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603L7G50RP D.P.CIRCUIT (AU) ST658W F80346K50HAP ESCUTCHEON BASE ST658W F630Y8V70HRP MEMBRANE SWITCH (U) ST658W L5AAAEC00056 DISPLAY ST658W F66175L00AP DISPLAY TUBE COVER ST658W F67005U40XN RUBBER CONNECTOR...

  • Page 32: Packing And Accessories

    NN-SD698S / NN-ST678S / NN-ST658W 9.6. PACKING AND ACCESSORIES Ref. No. Part No. Part Name & Description Pcs/Set Remarks F00038X00RP INSTRUCTION MANUAL SD698S F00038V60RP INSTRUCTION MANUAL ST678S,ST658W F01028X00SRP PACKING CASE,PAPER SD698S RPH F01028V60SRP PACKING CASE,PAPER ST678S RPH F01028V70HRP PACKING CASE,PAPER...

  • Page 33: Digital Programmer Circuit

    NN-SD698S / NN-ST678S / NN-ST658W 10 DIGITAL PROGRAMMER CIRCUIT 10.1. NN-SD698S...
  • Page 34 NN-SD698S / NN-ST678S / NN-ST658W...

  • Page 35: Nn-St678S

    NN-SD698S / NN-ST678S / NN-ST658W 10.2. NN-ST678S...
  • Page 36 NN-SD698S / NN-ST678S / NN-ST658W...

  • Page 37: Nn-St658W

    NN-SD698S / NN-ST678S / NN-ST658W 10.3. NN-ST658W...
  • Page 38 NN-SD698S / NN-ST678S / NN-ST658W...

  • Page 39: Parts List

    NN-SD698S / NN-ST678S / NN-ST658W 10.4. PARTS LIST 10.4.1. NN-SD698S Ref. No. Part No. Part Name & Description Pcs/Set Remarks BZ310 L0DDEA000014 BUZZER 2.0KHz AECETK1V471B AL CHEM CAPACITOR 470µF/35V C13,C16 AECETS1C220B AL CHEM CAPACITOR 22µF/16V C482 AECETS1H010B AL CHEM CAPACITOR 1µF/50V...
  • Page 40 NN-SD698S / NN-ST678S / NN-ST658W 10.4.3. NN-ST658W Ref. No. Part No. Part Name & Description Pcs/Set Remarks BZ310 L0DDEA000014 BUZZER 2.0KHz AECETK1V471B AL CHEM CAPACITOR 470µF/35V AECETS1C220B AL CHEM CAPACITOR 22µF/16V CX320 H2B800400007 CERAMIC RESONATOR 8.0MHz D220-D222,D224,D227 MA2C19600E DIODE D10-D13...

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