Table of Contents
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Please file and use this manual together with the service manual for Model NN-S262SF (Order
No.SIMMC0203005C1)
NN-SD297SR
NN-SD297BR
NN-SD297WR
NN-SD277SR
NN-SD277BR
NN-SD277WR
NN-SA247SR
NN-P295SFR
NN-P295WFR
NN-S255WFR
NN-S245WFR
CPH(CANADA)
© Panasonic Home Appliances Microwave Oven
(Shanghai) Co., Ltd. 2009.
ORDER NO.PHAMOS0902007A1
Microwave Oven
E2
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Table of Contents
Troubleshooting
Related Manuals for Panasonic NN-SD297SR
Summary of Contents for Panasonic NN-SD297SR
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Page 1: Microwave Oven
Microwave Oven NN-SD297SR NN-SD297BR NN-SD297WR NN-SD277SR NN-SD277BR NN-SD277WR NN-SA247SR NN-P295SFR NN-P295WFR NN-S255WFR NN-S245WFR CPH(CANADA) Please file and use this manual together with the service manual for Model NN-S262SF (Order No.SIMMC0203005C1) © Panasonic Home Appliances Microwave Oven (Shanghai) Co., Ltd. 2009. - Page 2 NN-SD297SR...
- Page 3 NN-SD297SR...
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Page 4: Table Of Contents
NN-SD297SR CONTENTS Page Page 1 SCHEMATIC DIAGRAM 5.1. Adjustment of primary latch switch, secondary latch switch 1.1. NN-SD297SR/BR/WR, P295SFR/WFR and monitor interlock switch. 1.2. SD277SR/BR/WR 5.2. Measurement of microwave output 1.3. NN-SA247SR, S245WFR 6 PROCEDURE FOR MEASURING MICROWAVE ENERGY 1.4. NN-S255WFR... -
Page 5: Schematic Diagram
NN-SD297SR 1 SCHEMATIC DIAGRAM 1.1. NN-SD297SR/BR/WR, P295SFR/WFR... -
Page 6: Sd277Sr/Br/Wr
NN-SD297SR 1.2. SD277SR/BR/WR... -
Page 7: Nn-Sa247Sr, S245Wfr
NN-SD297SR 1.3. NN-SA247SR, S245WFR... -
Page 8: Nn-S255Wfr
NN-SD297SR 1.4. NN-S255WFR... -
Page 9: Description Of Operating Sequence
NN-SD297SR 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 button is tapped: High Voltage Inverter Power Supply (U) controls output power 1. The digital programer circuit determines the power level and by the signal from Digital Programmer Circuit (DPC). -
Page 10: Sensor Reheat (Only For Sensor Models)
NN-SD297SR Explanation of the Auto Sensor Cooking process 1. T1 time The total amount of time it takes the microwave oven to switch to T2 time. 2. T2 time When the steam escapes from the cooking container placed in the oven, the humidity sensor detects it and the microprocessor calculates the balance of cooking time. -
Page 11: Cautions To Be Observed When Troubleshooting
NN-SD297SR 3 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING Unlike many other appliances, the microwave oven is a high voltage, high current device. Though it is free from danger in ordinary use, extreme care should be taken during repair. CAUTION Servicemen should remove their watches and rings whenever working close to or replacing the magnetron. -
Page 12: Part Replacement
NN-SD297SR WARNING DISCHARGE HIGH VOLATGE 1. This is mandatory. Refer to “measurements and CAPACITORS adjustments” for the location of these switches. For about 30 seconds after the oven is turned off, an 2. When replacing the fuse, confirm that it has the electric charge remains in the high voltage capacitors of the appropriate rating for these models. -
Page 13: Component Test Procedure
NN-SD297SR 4 COMPONENT TEST PROCEDURE 4.3. 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 14: Inverter Power Supply (U)
NN-SD297SR 4.4. 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. Replace complete H.V. Inverter(U) Unit. -
Page 15: Measurements And Adjustments
NN-SD297SR 5 MEASUREMENTS AND ADJUSTMENTS 5.1. 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 16: Procedure For Measuring Microwave Energy Leakage
NN-SD297SR 6 PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE 6.2.1. 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 17: At Least Once A Year, Have The Radiation Monitor Checked For Calibration By Its Manufacturer
NN-SD297SR 6.4. At least once a year, have the radiation monitor checked for calibration by its manufacturer. -
Page 18: Troubleshooting Guide
NN-SD297SR 7 TROUBLESHOOTING GUIDE 7.1. 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 19: Simple Way Of H.v. Inverter/Magnetron Troubleshooting
NN-SD297SR 7.2. 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 20: Exploded View And Parts List
NN-SD297SR 8 EXPLODED VIEW AND PARTS LIST 8.1. EXPLODED VIEW... -
Page 21: Parts List
NN-SD297SR 8.2. 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 22 NN-SD297SR Ref. No. Part No. Part Name & Description Pcs/Set Remarks F61456F20AP THERMAL CUTOUT F61456N60AP THERMAL CUTOUT F606Y8X00AP H.V.INVERTER (U) F606Y8M00AP INTERCHANGEABLE 2M261-M32JP MAGNETRON F62308F20AP FUSE 20A/125V F400B6Z20AP CARBON FILTER (U) F692Y8F20AP NOISE FILTER (U) F82605H00AP NOISE FILTER BRACKET F66986Z20AP...
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Page 23: Door Assembly
NN-SD297SR 8.3. DOOR ASSEMBLY Ref. No. Part No. Part Name & Description Pcs/Set Remarks F30186P40AG DOOR KEY A F302A8Q00SAP DOOR A (U) SD297SR CPH,P295SFR CPH F302A9D90BAP DOOR A (U) SD297BR CPH F302A8Q50HAP DOOR A (U) SD297WR CPH,P295WFR CPH F302A8Q10SAP DOOR A (U) -
Page 24: Escutcheon Base Assembly
NN-SD297SR 8.4. ESCUTCHEON BASE ASSEMBLY 8.4.1. NN-SD297SR/BR/WR CPH Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603L9D90CP D.P.CIRCUIT (AU) SD297SR/BR/WR CPH F603Y9D70CP D.P.CIRCUIT (DU) SD297SR/BR/WR CPH F800L8Q00SAP ESCUTCHEON BASE (U) SD297SR CPH F800L9D90BAP ESCUTCHEON BASE (U) SD297BR CPH... - Page 25 NN-SD297SR 8.4.2. NN-P295SFR/WFR CPH Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603L9D70CP D.P.CIRCUIT (AU) P295SFR/WFR CPH F603Y9D70CP D.P.CIRCUIT (DU) P295SFR/WFR CPH F800L6Z00SCP ESCUTCHEON BASE (U) P295SFR CPH F800L6Z00HCP ESCUTCHEON BASE (U) P295WFR CPH F66166Y40BP FLAT CABLE P295SFR/WFR CPH...
- Page 26 NN-SD297SR 8.4.3. NN-SD277SR/BR/WR CPH Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603L9D80CP D.P.CIRCUIT (AU) SD277SR/BR/WR CPH F800L8Q10SCP ESCUTCHEON BASE (U) SD277SR CPH F891P6Z20SAP DOOR OPENING BUTTON (U) SD277SR CPH F80726Z30BAP DOOR OPENING BUTTON SD277BR CPH F80726Z30HAP DOOR OPENING BUTTON...
- Page 27 NN-SD297SR 8.4.4. NN-SA247SR CPH, S255WFR CPH, S245WFR CPH Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603L9E50CP D.P.CIRCUIT (AU) S255WFR CPH F603L9D60CP D.P.CIRCUIT (AU) SA247SR CPH,S245WFR CPH F800L8Q90SCP ESCUTCHEON BASE (U) SA247SR CPH F80025H00AP ESCUTCHEON B SA247SR CPH,S245WFR CPH...
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Page 28: Packing And Accessories
NN-SD297SR 8.5. PACKING AND ACCESSORIES Ref. No. Part No. Part Name & Description Pcs/Set Remarks F00038Q00CP INSTRUCTION MANUAL SD297SR/BR/WR CPH F00038Q10CP INSTRUCTION MANUAL SD277SR/BR/WR CPH F00038Q50CP INSTRUCTION MANUAL P295SFR/WFR CPH F00038Q60CP INSTRUCTION MANUAL S255WFR CPH F00038Q90CP INSTRUCTION MANUAL SA247SR CPH,S245WFR CPH... - Page 29 NN-SD297SR Ref. No. Part No. Part Name & Description Pcs/Set Remarks F011F6Z00AP ATTACHMENT F04458Q00SCP OVERLAY SD297SR CPH F04459D90BCP OVERLAY SD297BR CPH F04459D90HCP OVERLAY SD297WR CPH F04458Q10SCP OVERLAY SD277SR CPH F04458Q10BCP OVERLAY SD277BR CPH F04458Q10HCP OVERLAY SD277WR CPH F04459D70SCP OVERLAY P295SFR CPH...
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Page 30: Wiring Materials
NN-SD297SR 8.6. WIRING MATERIALS Ref. No. Part No. Part Name & Description Pcs/Set Remarks F030A9D90CP LEAD WIRE HARNESS SD297SR/BR/WR CPH,P295SFR/WFR CPH (Connect to Primary Latch Switch,Monitor Interlock Switch,Top Oven Lamp,Stirrer Motor,Magnetron cooling Fan Motor,Inverter cooling Fan Motor,3 Thermal Cutouts & Blower Motor,Cam Switch etc.) -
Page 31: Digital Programmer Circuit
NN-SD297SR 9 DIGITAL PROGRAMMER CIRCUIT 9.1. NN-SD297SR/BR/WR CPH... - Page 32 NN-SD297SR...
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Page 33: Nn-P295Sfr/Wfr Cph
NN-SD297SR 9.2. NN-P295SFR/WFR CPH... - Page 34 NN-SD297SR...
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Page 35: Nn-Sd277Sr/Br/Wr Cph, S255Wfr Cph
NN-SD297SR 9.3. NN-SD277SR/BR/WR CPH, S255WFR CPH... - Page 36 NN-SD297SR...
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Page 37: Nn-Sa247Sr Cph, S245Wfr Cph
NN-SD297SR 9.4. NN-SA247SR CPH, S245WFR CPH... - Page 38 NN-SD297SR...
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Page 39: Parts List
NN-SD297SR 9.5. PARTS LIST 9.5.1. NN-SD297SR/BR/WR CPH Ref. No. Part No. Part Name & Description Pcs/Set Remarks BZ210 L0DDEA000014 BUZZER 2.0KHz C110 ECEA1EKS101I AL CHEM CAPACITOR 100µF/25V C111 ECQV1H474JL2 CAPACITOR 0.47µF/50V F2A1V102B279 AL CHEM CAPACITOR 1000µF/35V F2A1C220B624 AL CHEM CAPACITOR 22µF/16V... - Page 40 NN-SD297SR 9.5.3. NN-SD277SR/BR/WR CPH, S255WFR CPH Ref. No. Part No. Part Name & Description Pcs/Set Remarks BZ210 L0DDEA000014 BUZZER 2.0KHz C110 SKP101M1EE11H AL CHEM CAPACITOR 100µF/25V C111 ECQV1H474JL2 CAPACITOR 0.47µF/50V F2A1V102B279 AL CHEM CAPACITOR 1000µF/35V F2A1C220B624 AL CHEM CAPACITOR 22µF/16V...