Related Manuals for Panasonic NN-SE795S
Summary of Contents for Panasonic NN-SE795S
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Page 1: Microwave Oven
ORDER NO.PAPMOSH1501004CE Microwave Oven NN-SE795S NN-ST785S NN-ST775S NN-ST765S NN-SD765S NN-SD755S CPH (CANADA) © Panasonic Appliances Microwave Oven (Shanghai) Co., Ltd. 2015. - Page 2 NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S...
- Page 3 NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S...
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Page 4: Table Of Contents
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S CONTENTS Page Page 1 SCHEMATIC DIAGRAM 6 MEASUREMENTS AND ADJUSTMENTS 2 DESCRIPTION OF OPERATING SEQUENCE 6.1. Adjustment of primary interlock switch, secondary interlock 2.1. Variable power cooking control switch and interlock monitor switch. -
Page 5: Schematic Diagram
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 1 SCHEMATIC DIAGRAM... -
Page 6: Description Of Operating Sequence
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 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-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 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. -
Page 8: Cautions To Be Observed When Troubleshooting
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 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-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S Discharging the high voltage capacitors WARNING 3.6. Verification after repair There is high voltage present with high current capabilities 1. After repair or replacement of parts, make sure that the in the circuits of the primary and secondary windings, choke screws of the oven, etc. -
Page 10: Disassembly And Parts Replacement Procedure
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 4 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 4.1. Magnetron 4.2. Digital programmer circuit (D.P.C), membrane key board 1. Discharge high voltage charge. 2. Remove 1 screw holding air guide A on the oven cavity. -
Page 11: Low Voltage Transformer And/Or Power Relays (Rl1)
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 4.3. Low voltage transformer 4.5. Door assembly and/or power relays (RL1) 1. Remove door C from door E by carefully pulling outward, starting from upper right hand corner using a flat blade CAUTION: screwdriver. -
Page 12: Turntable Motor
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 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-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 4.8. Inverter power supply 6. Press 1 encircled locking tab and then slide 4 locking tabs of Inverter bracket at the bottom of the base in direction of CAUTIONS arrows. -
Page 14: Component Test Procedure
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 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. -
Page 15: Inverter Power Supply (U)
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 5.4. Inverter power supply (U) 4. Program DPC. For SD765S/SD755S models DO NOT try to REPAIR H.V. Inverter power supply (U). a. Press Timer/Clock button twice. Replace complete H.V. Inverter(U) Unit. -
Page 16: Measurements And Adjustments
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 6 MEASUREMENTS AND ADJUSTMENTS 6.1. Adjustment of primary interlock switch, secondary interlock switch and interlock monitor switch. 1. Mount the Primary Interlock Switch, the Secondary Interlock 6.2. Measurement of microwave... -
Page 17: Procedure For Measuring Microwave Energy Leakage
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 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. -
Page 18: At Least Once A Year, Have The Radiation Monitor Checked For Calibration By Its Manufacturer
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 7.4. At least once a year, have the radiation monitor checked for calibration by its manufacturer. -
Page 19: Troubleshooting Guide
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 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) Oven Stops Operation During Cooking
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 8.1. (Troubleshooting) Oven stops operation during cooking SYMPTOM CAUSE CORRECTIONS 1. Oven stops in 3 seconds after No 120V AC is supplied to H.V.Inverter (U) 1. Interlock Switch pressing [Start] pad CN702 terminals 2. -
Page 21: Troubleshooting) Other Problems
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 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. -
Page 22: Troubleshooting Of Inverter Circuit (U) And Magnetron
This section explains failure codes of H95, H97, H98 and H99. First, you must program the DPC into TEST MODE, For NN-SE795S, ST785S, ST775S, ST765S models: press Clock button once → press Timer button once → press Start button once → press Power Level button once, For NN- SD765S, SD755S models: press Timer/Clock button twice →... -
Page 23: Trouble Related To Digital Programmer Circuit
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 8.4. Trouble related to Digital Programmer Circuit 8.4.1. NN-SE795S 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.) - Page 24 NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 8.4.2. NN-ST785S/ST775S/ST765S 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 25 NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 8.4.3. NN-SD765S/SD755S 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.
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Page 26: Simple Way Of H.v. Inverter/Magnetron Troubleshooting
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 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. -
Page 27: How To Check The Semiconductors Using An Ohm Meter
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 8.7. How to check the semiconductors using an OHM meter... -
Page 28: Exploded View And Parts List
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 9 EXPLODED VIEW AND PARTS LIST 9.1. EXPLODED VIEW... -
Page 29: Parts List
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 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 30: Escutcheon Base Assembly
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 9.3. ESCUTCHEON BASE ASSEMBLY 9.3.1. NN-SE795S Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603LBP20CP D.P.CIRCUIT (AU) SE795S F603YBP20AP D.P.CIRCUIT (DU) SE795S F800LBP20SCP ESCUTCHEON BASE AU SE795S... - Page 31 NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 9.3.2. NN-ST785S Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603LBP90CP D.P.CIRCUIT (AU) ST785S F603MBP80AP D.P.CIRCUIT (BU) ST785S F800LBP90SCP ESCUTCHEON BASE (U) ST785S F6616BP90AP FLAT CABLE ST785S...
- Page 32 NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 9.3.3. NN-ST775S Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603LBQ00CP D.P.CIRCUIT (AU) ST775S F603MBQ00AP D.P.CIRCUIT (BU) ST775S F800LBQ00SCP ESCUTCHEON BASE (U) ST775S F8298BQ00KAP BUTTON ST775S F891PBP90SAP...
- Page 33 NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 9.3.4. NN-ST765S Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603LBQ10CP D.P.CIRCUIT (AU) ST765S F800LBQ10BCP ESCUTCHEON BASE (U) ST765S F891PBP90SAP DOOR OPENING BUTTON (U) ST765S F82565X00AP DOOR OPENING LEVER...
- Page 34 NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 9.3.5. NN-SD765S/SD755S Ref. No. Part No. Part Name & Description Pcs/Set Remarks E101 F603LBP40CP D.P.CIRCUIT (AU) SD765S,SD755S E102 F603YBP50AP D.P.CIRCUIT (DU) SD765S,SD755S E103 F800LBP40SCP ESCUTCHEON BASE (U) SD765S E103...
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Page 35: Door Assembly
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 9.4. DOOR ASSEMBLY Ref. No. Part No. Part Name & Description Pcs/Set Remarks F30186P40AG DOOR KEY A F302ABP20SAP DOOR A (U) SE795S F302ABP90SCP DOOR A (U) ST785S,ST775S F302ABQ10SCP DOOR A (U) -
Page 36: Wiring Materials
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 9.5. WIRING MATERIALS Ref. No. Part No. Part Name & Description Pcs/Set Remarks F030ABP20CP LEAD WIRE HARNESS (INCLUDING MAGNETRON THERMISTOR) F030E8W50AP H.V.LEAD WIRE... -
Page 37: Packing And Accessories
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 9.6. PACKING AND ACCESSORIES Ref. No. Part No. Part Name & Description Pcs/Set Remarks F0003BP20CP INSTRUCTION MANUAL SE795S F0003BP80CP INSTRUCTION MANUAL ST785S,ST775S,ST765S F0003BP40CP INSTRUCTION MANUAL SD765S,SD755S F0102BP20SCP PACKING CASE,PAPER... -
Page 38: Digital Programmer Circuit
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 10 DIGITAL PROGRAMMER CIRCUIT 10.1. SCHEMATIC DIAGRAM (NN-SE795S) - Page 39 NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S...
- Page 40 NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S...
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Page 41: Schematic Diagram (Nn-St785S/St775S/St765S)
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 10.2. SCHEMATIC DIAGRAM (NN-ST785S/ST775S/ST765S) - Page 42 NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S...
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Page 43: Schematic Diagram (Nn-Sd765S/Sd755S)
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 10.3. SCHEMATIC DIAGRAM (NN-SD765S/SD755S) - Page 44 NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S...
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Page 45: Parts List
NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 10.4. PARTS LIST 10.4.1. NN-SE795S Ref. No. Part No. Part Name & Description Pcs/Set Remarks BZ210 L0DDEA000014 BUZZER 2.0KHz DISP110 L5AYAYY00314 DISP HOLDER F6617BP20AP LCD HOLDER CX320 H2A8004A0038 CERAMIC RESONATOR 8.0MHz... - Page 46 NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S 10.4.5. NN-SD765S/SD755S Ref. No. Part No. Part Name & Description Pcs/Set Remarks BZ210 L0DDEA000014 BUZZER 2.0KHz DISP110 L5AYAYY00285 DISP HOLDER F66175W00AP LCD HOLDER F67525E40XN DIFFUSION SHEET D4EAY2710001 VARISTOR 270V MN90F23AA1 L.S.I.