Table of Contents
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Table of Contents
Troubleshooting
Related Manuals for Panasonic NN-SE284S
Summary of Contents for Panasonic NN-SE284S
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Page 1: Microwave Oven
ORDER NO.PAPMOSH1312046SE Microwave Oven NN-SE284S NN-SE284B NN-SE284W CPH(CANADA) Please file and use this manual together with the service manual for Model NN-S262SF (Order No.SIMMC0203005C1) © Panasonic Appliances Microwave Oven (Shanghai) Co., Ltd. 2013. - Page 2 NN-SE284S / NN-SE284B / NN-SE284W...
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Page 4: Table Of Contents
NN-SE284S / NN-SE284B / NN-SE284W CONTENTS Page Page 1 SCHEMATIC DIAGRAM 5.2. Measurement of microwave output 2 DESCRIPTION OF OPERATING SEQUENCE 6 PROCEDURE FOR MEASURING MICROWAVE ENERGY 2.1. Variable power cooking control LEAKAGE 2.2. Inverter power supply circuit 6.1. Equipment 2.3. -
Page 5: Schematic Diagram
NN-SE284S / NN-SE284B / NN-SE284W 1 SCHEMATIC DIAGRAM... -
Page 6: Description Of Operating Sequence
NN-SE284S / NN-SE284B / NN-SE284W 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-SE284S / NN-SE284B / NN-SE284W 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... -
Page 8: Cautions To Be Observed When Troubleshooting
NN-SE284S / NN-SE284B / NN-SE284W 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. -
Page 9: Part Replacement
NN-SE284S / NN-SE284B / NN-SE284W 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 10: Component Test Procedure
NN-SE284S / NN-SE284B / NN-SE284W 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 11: Inverter Power Supply (U)
NN-SE284S / NN-SE284B / NN-SE284W 4.4. Inverter power supply (U) 5. Program oven at High power for 1 minute and press [Start] pad. 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-SE284S / NN-SE284B / NN-SE284W 5 MEASUREMENTS AND ADJUSTMENTS 5.1. Adjustment of primary interlock switch, secondary interlock switch and interlock monitor switch. 1. Mount the Primary Interlock Switch, the Secondary Interlock 5.2. Measurement of microwave Switch and the Interlock Monitor Switch to the door hook output assembly as shown in illustration. -
Page 13: Procedure For Measuring Microwave Energy Leakage
NN-SE284S / NN-SE284B / NN-SE284W 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 14: At Least Once A Year, Have The Radiation Monitor Checked For Calibration By Its Manufacturer
NN-SE284S / NN-SE284B / NN-SE284W 6.4. At least once a year, have the radiation monitor checked for calibration by its manufacturer. -
Page 15: Troubleshooting Guide
NN-SE284S / NN-SE284B / NN-SE284W 7 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 16: Troubleshooting) Oven Stops Operation During Cooking
NN-SE284S / NN-SE284B / NN-SE284W 7.1. (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 17: Troubleshooting) Other Problems
NN-SE284S / NN-SE284B / NN-SE284W 7.2. (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 18: Trouble Related To Digital Programmer Circuit
NN-SE284S / NN-SE284B / NN-SE284W 7.3. Trouble related to Digital Programmer Circuit 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: Troubleshooting Of Inverter Circuit (U) And Magnetron
NN-SE284S / NN-SE284B / NN-SE284W 7.4. 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 20: Simple Way Of H.v. Inverter/Magnetron Troubleshooting
NN-SE284S / NN-SE284B / NN-SE284W 7.5. 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 21: Exploded View And Parts List
NN-SE284S / NN-SE284B / NN-SE284W 8 EXPLODED VIEW AND PARTS LIST 8.1. EXPLODED VIEW... -
Page 22: Parts List
NN-SE284S / NN-SE284B / NN-SE284W 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 23 NN-SE284S / NN-SE284B / NN-SE284W Ref. No. Part No. Part Name & Description Pcs/Set Remarks F101VBL60SCP VENT GRILLE (U) SE284S F101V6Z30BAP VENT GRILLE (U) SE284B F101V6Z30HAP VENT GRILLE (U) SE284W F48436Z00APG INHALE GUIDE A F01725H00AP CAUTION LABEL F00565H00AP CAUTION LABEL...
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Page 24: Door Assembly
NN-SE284S / NN-SE284B / NN-SE284W 8.3. DOOR ASSEMBLY Ref. No. Part No. Part Name & Description Pcs/Set Remarks F30186P40AG DOOR KEY A F302ABL60SCP DOOR A (U) SE284S F302ABL70BCP DOOR A (U) SE284B F302ABL70HCP DOOR A (U) SE284W F302K5H00AP DOOR E (U) -
Page 25: Escutcheon Base Assembly
NN-SE284S / NN-SE284B / NN-SE284W 8.4. ESCUTCHEON BASE ASSEMBLY 8.4.1. NN-SE284S Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603LBL60CP D.P.CIRCUIT (AU) SE284S F603YBL60CP D.P.CIRCUIT (DU) SE284S F800LBL60SCP ESCUTCHEON BASE (U) SE284S F66166Z00AP FLAT CABLE 25 PIN (FROM D.P.C. AU CN10 TO D.P.C. DU CN11) - Page 26 NN-SE284S / NN-SE284B / NN-SE284W 8.4.2. NN-SE284B, SE284W Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603LBL70CP D.P.CIRCUIT (AU) SE284B,SE284W F603YBL70CP D.P.CIRCUIT (DU) SE284B,SE284W F8034BL70BCP ESCUTCHEON BASE A SE284B F8034BL70HCP ESCUTCHEON BASE A SE284W F66166Z00AP FLAT CABLE 25 PIN (FROM D.P.C. AU CN10 TO D.P.C. DU CN11)
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Page 27: Packing And Accessories
NN-SE284S / NN-SE284B / NN-SE284W 8.5. PACKING AND ACCESSORIES Ref. No. Part No. Part Name & Description Pcs/Set Remarks F0003BL70CP INSTRUCTION MANUAL F0102BL60SCP PACKING CASE, PAPER SE284S F0102BL70BCP PACKING CASE, PAPER SE284B F0102BL70HCP PACKING CASE, PAPER SE284W F01046Z20AP UPPER FILLER... -
Page 28: Wiring Materials
NN-SE284S / NN-SE284B / NN-SE284W 8.6. WIRING MATERIALS Ref. No. Part No. Part Name & Description Pcs/Set Remarks F030ABL60CP LEAD WIRE HARNESS (Connect Primary Interlock Switch, Interlock Monitor Switch, CN701 H.V.Inverter, Stirrer Motor, Magnetron cooling Fan Motor, Inverter cooling Fan Motor, 3 Thermal Cutouts, Blower Motor, Noise Filter(U), D.P.C. -
Page 29: Digital Programmer Circuit
NN-SE284S / NN-SE284B / NN-SE284W 9 DIGITAL PROGRAMMER CIRCUIT 9.1. SCHEMATIC DIAGRAM... - Page 30 NN-SE284S / NN-SE284B / NN-SE284W...
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Page 31: Parts List
NN-SE284S / NN-SE284B / NN-SE284W 9.2. PARTS LIST Ref. No. Part No. Part Name & Description Pcs/Set Remarks BZ210 L0DDEA000014 BUZZER 2.0KHz F2A1C471B626 AL CHEM CAPACITOR 470µF/16V F2A1C220B624 AL CHEM CAPACITOR 22µF/16V F2A1H1R0B574 AL CHEM CAPACITOR 1µF/50V CX320 H2A8004A0038 CERAMIC RESONATOR 8.0MHz...