Table of Contents
Troubleshooting
Related Manuals for Panasonic NN-CS597S APH
Summary of Contents for Panasonic NN-CS597S APH
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Page 1: Microwave Oven
ORDER NO.PHAMOS0705036C1 Microwave Oven NN-CS597S APH (USA) CPH (CANADA) © 2007 Panasonic Home Appliances Microwave Oven (Shanghai) Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. - Page 2 NN-CS597S...
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Page 4: Table Of Contents
NN-CS597S CONTENTS Page Page 1 FEATURE CHART 7.1. Primary, Secondary Latch Switch interlocks & Power 2 CONTROL PANEL Relay RY1 3 SCHEMATIC DIAGRAM 7.2. Monitor Interlock Switch 3.1. APH 7.3. Magnetron 3.2. CPH 7.4. key board membrane (Membrane switch assembly) 4 DESCRIPTION OF OPERATING SEQUENCE 7.5. -
Page 5: Feature Chart
NN-CS597S 1 FEATURE CHART 2 CONTROL PANEL... -
Page 6: Schematic Diagram
NN-CS597S 3 SCHEMATIC DIAGRAM 3.1. -
Page 7: Cph
NN-CS597S 3.2. -
Page 8: Description Of Operating Sequence
NN-CS597S 4 DESCRIPTION OF OPERATING SEQUENCE 4.1. Variable power cooking 4.3. Auto Menu cooking control When the Auto Menu 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 9: Bake Cooking Control
NN-CS597S When the oven temperature drops below the set temperature, the digital programmer circuit senses the signal and starts supplying a high level signal to RY5 again. NOTE: If only bake heater works, bake fan motor would rotate for 5 minute after cooking to cool oven and electric components. -
Page 10: Steam Function (Microwave With Steam)
NN-CS597S 4.6. Steam function (Microwave with Steam) 4.6.1. Water Supply Water will be pumped out into the evaporation tray and the heater located underneath will generate the steam in the cavity. 4.6.2. Operation When pressing [start] button, oven preheat will start and then water supply begins. It will take 1 minute for preheating. When preheat is completed, it will turn into actual cooking process. -
Page 11: Cautions To Be Observed When Troubleshooting
NN-CS597S 5 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING Unlike many other appliances, the microwave oven is a high bracket A. voltage, high current device. It is free from danger in ordinary use, though 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: Confirm Before Repair
NN-CS597S Discharging the high voltage capacitors WARNING Never insert a wire, nail or any other metal object through the lamp holes on the cavity or any holes or gaps, because such There is high voltage present with high current capabilities objects may work as an antenna and cause microwave in the circuits of the primary and secondary windings, choke leakage. -
Page 13: Disassembly And Parts Replacement Procedure
NN-CS597S 6 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 4. Remove 1 screw holding oven thermistor on cavity top CAUTION plate. To prevent the water from invading the electric parts that can cause a short circuit or electric shock: 1. Before repair or replacement of parts, ensure to remove the water tank from microwave oven. -
Page 14: Digital Programmer Circuit (D.p.c) Au, (D.p.c.) Hu, Key Board Membrane And Power Relay
NN-CS597S 9. Remove 3 screws holding air guide B on magnetron & on 4. Disconnect wiring connectors CN3, CN4, CN8 and all base plate respectively, then remove air guide B. connectors connecting to power relays from D.P.C. board HU (relay board). 5. -
Page 15: Digital Programmer Circuit (D.p.c.) Du And Low Voltage Transformer
NN-CS597S 6.4. H.V. Inverter 2. When installing the new key board membrane, make sure that the surface of escutcheon base is clean to 1. Discharge high voltage remaining in high voltage capacitor. prevent a malfunction or shorted contacts. 2. Remove screws holding inverter... -
Page 16: Fan Motor
NN-CS597S 6.6. Door assembly 6.5. Fan motor 1. Remove left and right door key springs from door arm with 1. Disconnect 2 lead wires from fan motor terminals. plier. 2. Remove 2 screws holding air guide B on magnetron & on NOTE: base plate respectively, then remove air guide B. -
Page 17: Stirrer Motor
NN-CS597S 6.7. Stirrer motor 6.8. Pump motor 1. Remove the motor cover by breaking off at the 8 spots 1. Remove water tank from escutcheon base. indicated by arrows with a cutter or the like. 2. Keep pressing [Microwave with Steam] pad for more than 2 seconds to drain the water remaining in the water pipes and tubes into oven cavity. -
Page 18: Heater Du (Steam Heater)
NN-CS597S pipe, the inserted depth is not less than 9mm. 6.9. Heater DU (steam heater) 1. Remove water tank from escutcheon base. 2. Keep pressing [Microwave with Steam] pad for more than 2 seconds to drain the water remaining in the water pipes and tubes into oven cavity. -
Page 19: Bake Fan Motor And Bake Heater
NN-CS597S 6.10. Bake fan motor and bake 10. Remove 1 screw holding thermistor on heater DU. heater 1. Remove 6 screws to remove rear cover. 11. Remove 6 screws holding heater DU & thermal cutout bracket on the bottom of oven assy. To install heater DU NOTE: 1.Spread... - Page 20 NN-CS597S 8. Release 3 metal tabs which are holding the insulated wire harness to the bake heater outside cover. 9. Disconnect 2 lead wires from thermal cutout and bake fan motor terminals respectively. 10. Remove 4 screws holding bake heater outside cover onto 5.
- Page 21 NN-CS597S 13. Slide the bake heater inside cover upward then rightward To replace bake fan motor and out as shown below, then remove the module, which 16. Remove 1 nut holding the bake heater fan blade, then consists of bake heater inside cover, bake fan motor and remove fan blade form the fan motor shaft.
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Page 22: Oven Circuit Breaker
NN-CS597S 6.11. Oven circuit breaker To install the oven circuit breaker inside the cover: 1. Ensure that the oven circuit breaker is in the right direction as shown in the illustration above (Do not install upside down). 2. Before tightening 2 screws, pull the oven circuit breaker harness (U) in and out slightly to confirm if the lead wire(s) move freely and are not pinched or pressed under the oven circuit breaker cover (If the lead wire(s) are pinched or... -
Page 23: Component Test Procedure
NN-CS597S 7 COMPONENT TEST PROCEDURE 7.3. 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 24: Inverter Power Supply (U)
NN-CS597S 7.5. 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). button. Replace complete H.V. Inverter(U) Unit. a. After approximately 3 seconds, oven stops operating. b. -
Page 25: Measurements And Adjustments
NN-CS597S 8 MEASUREMENTS AND ADJUSTMENTS 8.1. Adjustment of primary latch switch, secondary latch switch and monitor interlock switch. 1. Mount the primary latch switch and the monitor interlock switch to the interlock mounting bracket assembly as shown in illustration. 2. Mount the secondary latch switch to secondary switch holder as shown in illustration. -
Page 26: Measurement Of Microwave Output
NN-CS597S 8.2. Measurement of microwave output The output power of the magnetron can be determined by performing IEC standard test procedures. However,due to the complexity of IEC test procedures, it is recommended to test the magnetron using the simple method outlined below. Necessary Equipment: *1 liter beaker *Glass thermometer *Wrist watch or stopwatch... -
Page 27: Procedure For Measuring Microwave Energy Leakage
NN-CS597S 9 PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE 9.2.1. 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 28: At Least Once A Year, Have The Radiation Monitor Checked For Calibration By Its Manufacturer
NN-CS597S 9.4. At least once a year, have the radiation monitor checked for calibration by its manufacturer. -
Page 29: Troubleshooting Guide
NN-CS597S 10 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. 2. -
Page 30: Troubleshooting) Oven Stops Operation During Cooking
NN-CS597S 10.1. (Troubleshooting) Oven stops operation during cooking SYMPTOM CAUSE CORRECTIONS 1. Oven stops in 3 seconds after No input AC is supplied to H.V.Inverter (U) 1. Latch Switch pressing [start] button. CN702 terminals 2. Power relay RY1 3. Loose lead wire connector CN701, CN702 4. -
Page 31: Troubleshooting) Other Problems
NN-CS597S 10.2. (Troubleshooting) Other problems SYMPTOM CAUSE CORRECTIONS 1. Oven is dead. Defective oven circuit breaker Switch of oven circuit breaker is in "O" Turn the switch of oven circuit breaker to "I" Fuse is OK. position position. No display and no operation at all. Open or loose lead wire harness Open thermal cutout / thermistor Check thermal cutout is defective. -
Page 32: Troubleshooting Of Inverter Circuit (U) And Magnetron
NN-CS597S 10.3. 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 33: Trouble Related To Digital Programmer Circuit
NN-CS597S 10.4. 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. secondary voltage →Step3 Normal IC10 pin5 voltage... -
Page 34: How To Check The Semiconductors Using An Ohm Meter
NN-CS597S 10.6. How to check the semiconductors using an OHM meter... -
Page 35: Exploded View And Parts List
NN-CS597S 11 EXPLODED VIEW AND PARTS LIST 11.1. EXPLODED VIEW... -
Page 36: Parts List
NN-CS597S 11.2. 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. When replacing any of these components, use only manufacture’s specified parts. -
Page 37: Water Tank Assembly
NN-CS597S Ref. No. Part No. Part Name & Description Pcs/Set Remarks F66796Y40BP BAKE HEATER INSIDE COVER F607J6Y40BP BAKE ASSEMBLY(BU) (INCLUDING BAKE HEATER OUTSIDE COVER & ADIABATIC MATERIAL) F40276Y40BP INVERTER AIR GUIDE BRACKET F50586Y40XP BRACKET F50596Y40XP COVER F60588S70AP OVEN CIRCUIT BREAKER F03586Y40XP CIRCUIT BREAKER HARNESS F66286Y40BN... -
Page 38: Escutcheon Base Assembly
NN-CS597S 11.4. ESCUTCHEON BASE ASSEMBLY Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603L6Y40AP D.P.CIRCUIT (AU) F603L6Y40CP D.P.CIRCUIT (AU) F605S6Y40AP D.P.CIRCUIT (HU) F630Y8S70SAP MEMBRANE SWITCH(U) F800A8S70SAP ESCUTCHEON BASE (U) (INCLUDING MEMBRANE SWITCH(U)) F800B8S70SAP ESCUTCHEON BASE (BU) F803G6Y40SBP POP-UP DIAL (U) F400L6Y40XP PUMP MOTOR-LED(U) (INCLUDING PUMP &... -
Page 39: Door Assembly
NN-CS597S 11.6. DOOR ASSEMBLY Ref. No. Part No. Part Name & Description Pcs/Set Remarks F390L8S70SAP DOOR (U) (INCLUDING DOOR C & SEAL) F30548S70AP DOOR ARM (LEFT) F30448S70AP DOOR ARM (RIGHT) F32316Y40BP DOOR KEY SPRING A F32306Y40BP DOOR KEY SPRING B F02459660AP DHHS LABEL F04114180CP... -
Page 40: Packing And Accessories
NN-CS597S 11.8. PACKING AND ACCESSORIES Ref. No. Part No. Part Name & Description Pcs/Set Remarks F00038S70AP INSTRUCTION MANUAL F00038S70CP INSTRUCTION MANUAL F01028S70AP PACKING CASE, PAPER F01028S70CP PACKING CASE, PAPER F01048S70AP UPPER FILLER F01058S70AP LOWER FILLER F01066Y40XP P.E BAG F01078100XN DOOR SHEET F06217J70XP GLASS TRAY F01126Y40XP... -
Page 41: Digital Programmer Circuit
NN-CS597S 12 DIGITAL PROGRAMMER CIRCUIT 12.1. SCHEMATIC DIAGRAM... - Page 42 NN-CS597S 05/07 ChengWei S-8S7 Printed in China...