Panasonic NN-SE992S Service Manual
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Panasonic NN-SE992S Service Manual

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NN-SE992S
NN-SD982S
NN-ST962S
RPH (MEXICO & LATIN AMERICA)
© Panasonic Home Appliances Microwave Oven
(Shanghai) Co., Ltd. 2012.
ORDER NO.PAPMOSH1201008CE

Microwave Oven

E1

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Summary of Contents for Panasonic NN-SE992S

  • Page 1: Microwave Oven

    ORDER NO.PAPMOSH1201008CE Microwave Oven NN-SE992S NN-SD982S NN-ST962S RPH (MEXICO & LATIN AMERICA) © Panasonic Home Appliances Microwave Oven (Shanghai) Co., Ltd. 2012.
  • Page 2 NN-SE992S / NN-SD982S / NN-ST962S...
  • Page 3 NN-SE992S / NN-SD982S / NN-ST962S...

  • Page 4: Table Of Contents

    NN-SE992S / NN-SD982S / NN-ST962S 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 interlock switch, secondary interlock 2.3.

  • Page 5: Schematic Diagram

    NN-SE992S / NN-SD982S / NN-ST962S 1 SCHEMATIC DIAGRAM...

  • Page 6: Description Of Operating Sequence

    NN-SE992S / NN-SD982S / NN-ST962S 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-SE992S / NN-SD982S / NN-ST962S Explanation of the Auto Sensor Cooking process NOTE: 1. During the first 10 second period there is no microwave When "More" or "Less" pad is selected, the K factor varies activity. When calculating the T2 time by using the resulting in T2 time to be increased or decreased.

  • Page 8: Cautions To Be Observed When Troubleshooting

    NN-SE992S / NN-SD982S / NN-ST962S 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-SE992S / NN-SD982S / NN-ST962S 3.6. Verification 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. are neither loosen or missing.

  • Page 10: Magnetron

    NN-SE992S / NN-SD982S / NN-ST962S 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 11: Inverter Power Supply (U)

    NN-SE992S / NN-SD982S / NN-ST962S 5.5. Inverter power supply (U) 5. Program oven at High power for 1 minute and press [Start] button. DO NOT try to REPAIR H.V. Inverter power supply (U). a. After approximately 3 seconds, oven stops operating.

  • Page 12: Measurements And Adjustments

    NN-SE992S / NN-SD982S / NN-ST962S 6 MEASUREMENTS AND ADJUSTMENTS 6.1. Adjustment of primary interlock switch, secondary interlock switch and monitor switch. 1. Mount the Primary Interlock Switch, the Secondary Interlock Switch and the Monitor Switch to the door hook assembly as shown in illustration.

  • Page 13: Procedure For Measuring Microwave Energy Leakage

    NN-SE992S / NN-SD982S / NN-ST962S 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 14: Troubleshooting Guide

    NN-SE992S / NN-SD982S / NN-ST962S 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 15: Troubleshooting) Oven Stops Operation During Cooking

    NN-SE992S / NN-SD982S / NN-ST962S 8.1. (Troubleshooting) Oven stops operation during cooking SYMPTOM CAUSE CORRECTIONS 1. Oven stops 3 seconds after No 120V AC is supplied to H.V.Inverter (U) CN702 1. Interlock Switch pressing [Start] pad terminals 2. Power relay RY1 3.

  • Page 16: Troubleshooting) Other Problems

    NN-SE992S / NN-SD982S / NN-ST962S 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 17: Troubleshooting Of Inverter Circuit (U) And Magnetron

    NN-SE992S / NN-SD982S / NN-ST962S 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 18: Trouble Related To Digital Programmer Circuit

    NN-SE992S / NN-SD982S / NN-ST962S 8.4. Trouble related to Digital Programmer Circuit 8.4.1. NN-SE992S SYMPTOM STEP CHECK RESULT CAUSE/CORRECTIONS →Step2 No display when oven is first plugged Fuse pattern of D.P.C. Normal Open Replace D.P.C. or Fuse Pattern Low voltage transforment (L.V.T.) Abnormal 0V L.V.T.
  • Page 19 NN-SE992S / NN-SD982S / NN-ST962S 8.4.2. NN-SD982S SYMPTOM STEP CHECK RESULT CAUSE/CORRECTIONS →Step2 No display when oven is first plugged Fuse pattern of D.P.C. Normal Open Replace D.P.C. or Fuse Pattern Low voltage transforment (L.V.T.) Abnormal 0V L.V.T. secondary voltage Normal →Step3...
  • Page 20 NN-SE992S / NN-SD982S / NN-ST962S 8.4.3. NN-ST962S SYMPTOM STEP CHECK RESULT CAUSE/CORRECTIONS →Step2 No display when oven is first plugged Fuse pattern of D.P.C. Normal Open Replace D.P.C. or Fuse Pattern Low voltage transforment (L.V.T.) Abnormal 0V L.V.T. secondary voltage Normal →Step3...

  • Page 21: Simple Way Of H.v. Inverter/Magnetron Troubleshooting

    NN-SE992S / NN-SD982S / NN-ST962S 8.5. SIMPLE WAY OF H.V. INVERTER/MAGNETRON TROUBLESHOOTING Purpose: Simple way (3/23 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 22: How To Check The Semiconductors Using An Ohm Meter

    NN-SE992S / NN-SD982S / NN-ST962S 8.7. How to check the semiconductors using an OHM meter...

  • Page 23: Exploded View And Parts List

    NN-SE992S / NN-SD982S / NN-ST962S 9 EXPLODED VIEW AND PARTS LIST 9.1. EXPLODED VIEW...

  • Page 24: Parts List

    NN-SE992S / NN-SD982S / NN-ST962S 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 25: Escutcheon Base Assembly

    NN-SE992S / NN-SD982S / NN-ST962S 9.3. ESCUTCHEON BASE ASSEMBLY 9.3.1. NN-SE992S Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603LBD60RP D.P.CIRCUIT (AU) SE992S F603YBD60CP D.P.CIRCUIT (DU) SE992S F800LBD60SRP ESCUTCHEON BASE (U) SE992S F6616BD60AP FLAT CABLE SE992S (NARROW) F8298BD60SAP...
  • Page 26 NN-SE992S / NN-SD982S / NN-ST962S 9.3.2. NN-SD982S Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603LBD70RP D.P.CIRCUIT (AU) SD982S F603YBD70RP D.P.CIRCUIT (DU) SD982S F800LBD70SRP ESCUTCHEON BASE (U) SD982S F6616BD70AP FLAT CABLE SD982S F8298BD70SAP BUTTON SD982S F891P4M60SCP DOOR OPENING BUTTON (U)
  • Page 27 NN-SE992S / NN-SD982S / NN-ST962S 9.3.3. NN-ST962S Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603LBD90RP D.P.CIRCUIT (AU) ST962S F800LBD90SRP ESCUTCHEON BASE (U) ST962S F891P4M60SCP DOOR OPENING BUTTON (U) ST962S F82564M60AP DOOR OPENING LEVER ST962S F80375K00AP COOK BUTTON SPRING...

  • Page 28: Door Assembly

    NN-SE992S / NN-SD982S / NN-ST962S 9.4. DOOR ASSEMBLY Ref. No. Part No. Part Name & Description Pcs/Set Remarks F30186P40AG DOOR KEY A F301A8P00SAP DOOR A (U) SE992S F301A8P70SAP DOOR A (U) SD982S F301A8P30SAP DOOR A (U) ST962S F302KBD90AP DOOR E (U)

  • Page 29: Wiring Materials

    NN-SE992S / NN-SD982S / NN-ST962S 9.5. WIRING MATERIALS Ref. No. Part No. Part Name & Description Pcs/Set Remarks F030ABD60RP LEAD WIRE HARNESS F030E8W50AP H.V.LEAD WIRE F03537B70AP LEAD WIRE HARNESS (U) (INCLUDING THERMISTOR)

  • Page 30: Packing And Accessories

    NN-SE992S / NN-SD982S / NN-ST962S 9.6. PACKING AND ACCESSORIES Ref. No. Part No. Part Name & Description Pcs/Set Remarks F0003BD60RP INSTRUCTION MANUAL SE992S F0003BE30RP INSTRUCTION MANUAL SD982S F0003BE60RP INSTRUCTION MANUAL ST962S F0102BD60SRP PACKING CASE,PAPER SE992S F0102BD70SRP PACKING CASE,PAPER SD982S F0102BD90SRP...

  • Page 31: Digital Programmer Circuit

    NN-SE992S / NN-SD982S / NN-ST962S 10 DIGITAL PROGRAMMER CIRCUIT 10.1. SCHEMATIC DIAGRAM (NN-SE992S)
  • Page 32 NN-SE992S / NN-SD982S / NN-ST962S...

  • Page 33: Schematic Diagram (Nn-Sd982S)

    NN-SE992S / NN-SD982S / NN-ST962S 10.2. SCHEMATIC DIAGRAM (NN-SD982S)
  • Page 34 NN-SE992S / NN-SD982S / NN-ST962S...

  • Page 35: Schematic Diagram (Nn-St962S)

    NN-SE992S / NN-SD982S / NN-ST962S 10.3. SCHEMATIC DIAGRAM (NN-ST962S)
  • Page 36 NN-SE992S / NN-SD982S / NN-ST962S...

  • Page 37: Parts List

    NN-SE992S / NN-SD982S / NN-ST962S 10.4. PARTS LIST 10.4.1. NN-SE992S Ref. No. Part No. Part Name & Description Pcs/Set Remarks BZ210 L0DDEA000014 BUZZER 2.0KHz F2A1V471B281 AL CHEM CAPACITOR 470µF/35V F2A1C220B624 AL CHEM CAPACITOR 22µF/16V C482 F2A1H1R0B574 AL CHEM CAPACITOR 1µF/50V...
  • Page 38 NN-SE992S / NN-SD982S / NN-ST962S 10.4.3. NN-ST962S Ref. No. Part No. Part Name & Description Pcs/Set Remarks BZ210 L0DDEA000014 BUZZER 2.0KHz F2A1H471B575 AL CHEM CAPACITOR 470µF/50V F2A1C220B624 AL CHEM CAPACITOR 22µF/16V C482 F2A1H1R0B574 AL CHEM CAPACITOR 1µF/50V C483 F2A1HR47B574 AL CHEM CAPACITOR 0.47µF/50V...

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