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Panasonic NN-CS596S BPQ Service Manual
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Panasonic NN-CS596S BPQ Service Manual

Nn-cs596s series microwave oven
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See also: Operating Instructions & Cook Book
NN-CS596S
BPQ (U.K.)
EPG (France, Italy, Spain, Portugal, Greece, Poland,
Holland)
WPG (Switzerland)
SPG (Norway, Finland, Sweden, Denmark)
© 2006 Panasonic Home Appliances Microwave
Oven (Shanghai) Co., Ltd. All rights reserved.
Unauthorized copying and distribution is a violation
of law.
ORDER NO.PHAMOS0610046C2

Microwave Oven

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Summary of Contents for Panasonic NN-CS596S BPQ

  • Page 1: Microwave Oven

    NN-CS596S BPQ (U.K.) EPG (France, Italy, Spain, Portugal, Greece, Poland, Holland) WPG (Switzerland) SPG (Norway, Finland, Sweden, Denmark) © 2006 Panasonic Home Appliances Microwave Oven (Shanghai) Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.
  • Page 2 NN-CS596S...
  • Page 3 NN-CS596S...

  • Page 4: Table Of Contents

    NN-CS596S CONTENTS Page Page 1 SCHEMATIC DIAGRAM 4.11. Convection motor and convection heater 1.1. BPQ/EPG 4.12. Circuit breaker 1.2. WPG/SPG 5 COMPONENT TEST PROCEDURE 2 DESCRIPTION OF OPERATING SEQUENCE 5.1. Primary latch switch (door switch and power relay B) 2.1. Variable power cooking control interlocks 2.2.

  • Page 5: Schematic Diagram

    NN-CS596S 1 SCHEMATIC DIAGRAM 1.1. BPQ/EPG...

  • Page 6: Wpg/Spg

    NN-CS596S 1.2. WPG/SPG...

  • Page 7: Description Of Operating Sequence

    NN-CS596S 2 DESCRIPTION OF OPERATING SEQUENCE 2.1. Variable power cooking 2.3. Auto cooking control When the Auto Control feature is selected and the Start pad 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 8: Steam Function (Micro Steam)

    NN-CS596S 2.5. Steam function (micro steam) 2.5.1. Water Supply Water in water tank will be pumped out and supply to the steam generation heater located inside back bottom of oven cavity. 2.5.2. Operation When pressing [start] pad, 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 9: Cautions To Be Observed When Troubleshooting

    NN-CS596S 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. CAUTION Servicemen should remove their watches whenever working close to or replacing the magnetron.

  • Page 10: Confirm Before Repair

    NN-CS596S 3.7. Confirm 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. in the circuits of the primary and secondary windings, choke Microwave might leak if screws are not properly tightened.

  • Page 11: Disassembly And Parts Replacement Procedure

    NN-CS596S 4 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE bracket A. CAUTION 1. Before repair or replacement of parts, ensure to take out the 6. Disconnect 2 high voltage lead wires from magnetron water tank from microwave oven. filament terminals. 2. After removing the water tank, select "drainage" function to drain 7.

  • Page 12: Digital Programmer Circuit (D.p.c) Au, (D.p.c.) Hu, Membrane Key Board And Power Relay

    NN-CS596S 4.2. Digital programmer circuit 2. When installing new membrane key board, make sure that the surface of escutcheon base is cleaned (D.P.C) AU, (D.P.C.) HU, sufficiently so that any problems (shorted contacts or membrane key board and uneven surface) can be avoided. power relay NOTE: Be sure to ground any static electric charge built up on...

  • Page 13: Inverter

    NN-CS596S 4.4. H.V. Inverter 4.5. Upper heaters 1. Discharge high voltage remaining in high voltage capacitor. For BPQ & EPG models, all the ceramic heaters are 2. Remove 2 screws holding reinforce bracket A on oven 450W/80V. But for SPG & WPG models, there are two kinds of cavity.

  • Page 14: Door Assembly

    NN-CS596S 4.6. Door assembly NOTE: After replacement of the defective component 1. Remove left and right door key springs from door arm with parts of the door, reassemble it and follow plier. the instruction below for proper installation NOTE: and adjustment so as to prevent an excessive microwave leakage.

  • Page 15: Pump

    NN-CS596S 4.8. Pump 1. Draw out water tank from escutcheon base. 2. Keep pressing [Steam] pad for more than 2 seconds to drain the water remaining in the water pipes and tubes into oven cavity forcibly. 3. Pull out tube A connecting to pump from copper pipe. 4.

  • Page 16: Stir Motor

    NN-CS596S 4.9. Stir motor 4.10. Heater DU (steam heater) 1. Remove the motor cover by breaking off at the 8 spots 1. Draw out water tank from escutcheon base. indicated by arrows with a cutter or the like. 2. Keep pressing [Steam] pad for more than 2 seconds to drain the water remaining in the water pipes and tubes into oven cavity forcibly.

  • Page 17: Convection Motor And Convection Heater

    NN-CS596S conductibility. 5. Disconnect 2 lead wires from convection heater terminals. 2.Tighten 6 screws and make sure there is no gap between heater DU and bottom of oven cavity. 3.Do not forget to screw the thermal cutout bracket along with heater Du. To install thermistor NOTE: Before installing thermistor, please fill enough...
  • Page 18 NN-CS596S 9. Remove 4 screws holding convection outside cover B on To replace convection heater cavity back plate. 13. Remove 1 screw holding heater bracket A on convection inside cover A. 14. Remove 2 screws holding convection heater on convection inside cover A.

  • Page 19: Circuit Breaker

    NN-CS596S 17. Remove 2 screws holding convection motor on convection fan bracket. 4.12. Circuit breaker To install the circuit breaker on the cover NOTE: 1. Ensure the circuit breaker is in right direction as shown in above ILL (Do not install inversely). 2.

  • Page 20: Component Test Procedure

    NN-CS596S 5 COMPONENT TEST PROCEDURE 5.3. Magnetron CAUTION NEW. H.V. 1. High voltage is present at the high voltage terminal of the High Voltage Inverter (U) including aluminum heat sink during any cook Continuity checks can only indicate an open filament or a cycle.

  • Page 21: Inverter Power Supply (U)

    NN-CS596S 5.5. Inverter power supply (U) 5.6. Temperature thermistor DO NOT try to REPAIR H.V. Inverter power supply (U). These sensor monitors the heat produced by the heater circuit Replace complete H.V. Inverter(U) Unit. and maintains the magnetron temperature which user had selected.

  • Page 22: Measurements And Adjustments

    NN-CS596S 6 MEASUREMENTS AND ADJUSTMENTS 6.1. Adjustment of Primary latch 6.2. Measurement of microwave switch, Secondary latch output switch and Short switch. The output power of the magnetron can be determined by performing IEC standard test procedures. However, due to the 1.

  • Page 23: Troubleshooting Guide

    NN-CS596S 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 handles very large current and high voltage. Operating a misaligned inverter circuit is dangerous. 2.

  • Page 24: Troubleshooting) Oven Stops Operation During Cooking

    NN-CS596S 7.1. (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 pad. CN702 terminals 2. Power relay RY1 3. Loose lead wire connector CN701, CN702 Oven stops in 23 seconds after H.V.Inverter (U) operates by the control signals 1.

  • Page 25: Troubleshooting) Other Problems

    NN-CS596S 7.2. (Troubleshooting) Other problems SYMPTOM CAUSE CORRECTIONS 1. Oven is dead. Defective circuit breaker The switch of circuit breaker is in "O" position Turn the switch of circuit breaker to "I" position. Fuse is OK. Open or loose lead wire harness No display and no operation at all.

  • Page 26: Troubleshooting Of Inverter Circuit (U) And Magnetron New H

    NN-CS596S 7.3. Troubleshooting of inverter circuit (U) and magnetron NEW H.V. 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 27: Simple Way Of H.v. Inverter/Magnetron Troubleshooting

    NN-CS596S 7.4. 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. Note: Do not replace both Inverter board and Magnetron simultaneously and automatically without going through this procedure.

  • Page 29: Parts List

    NN-CS596S 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. When replacing any of these components, use only manufacture’s specified parts.

  • Page 30: Water Tank Assembly

    NN-CS596S Ref. No. Part No. Part Name & Description Pcs/Set Remarks Z03346Y40BP MENU LABEL Z90717J70XP SUPPORT ZTWFA4+12T SCREW FOR MAGNETRON ZTWFA4+12D SCREW FOR CABINET BODY Z202Q6Y40BP UPPER HEATER PANEL Z15676Y40XP DRIP PLATE Z22776Y40XP LOWER HEATER PANEL Z10596Y40EP BACK COVER Z10586Y40BP SIDE COVER Z10576Y40XP BACK COVER C...

  • Page 31: Escutcheon Base Assembly

    NN-CS596S 8.4. ESCUTCHEON BASE ASSEMBLY Ref. No. Part No. Part Name & Description Pcs/Set Remarks Z603L6Y40BP D.P.CIRCUIT (AU) Z603L6Y40EP D.P.CIRCUIT (AU) Z603L6Y40SP D.P.CIRCUIT (AU) SPG,WPG Z605S6Y40BP D.P.CIRCUIT (HU) BPQ,EPG Z605S6Y40SP D.P.CIRCUIT (HU) SPG,WPG Z630Y6Y40SBP MEMBRANE SWITCH(U) Z800A6Y40SBP ESCUTCHEON BASE (U) BPQ (INCLUDING MEMBRANE SWITCH(U)) Z800A6Y40SEP ESCUTCHEON BASE (U)

  • Page 32: Door Assembly

    NN-CS596S 8.5. DOOR ASSEMBLY Ref. No. Part No. Part Name & Description Pcs/Set Remarks Z390L6Y40SBP DOOR(U) BPQ (INCLUDING DOOR C & SEAL) Z390L6Y40SEP DOOR(U) EPG,SPG,WPG (INCLUDING DOOR C & SEAL) Z30856Y40XP DOOR C Z3334-1K00 SEAL Z30546Y40BP DOOR ARM (LEFT) Z30446Y40BP DOOR ARM (RIGHT) Z32316Y40BP DOOR KEY SPRING A...

  • Page 33: Packing And Accessories

    NN-CS596S 8.7. PACKING AND ACCESSORIES Ref. No. Part No. Part Name & Description Pcs/Set Remarks Z00036Y40BP INSTRUCTION MANUAL Z00036Y40EP INSTRUCTION MANUAL Z00036Y40SP INSTRUCTION MANUAL Z00036Y40WP INSTRUCTION MANUAL Z01026Y40BP PACKING CASE,PAPER Z01026Y40EP PACKING CASE,PAPER EPG, SPG, WPG Z01046Y40BP UPPER FILLER Z01056Y40BP LOWER FILLER Z01066Y40XP P.E BAG...

  • Page 34: Digital Programmer Circuit

    NN-CS596S 9 DIGITAL PROGRAMMER CIRCUIT 9.1. SCHEMATIC DIAGRAM...
  • Page 35 NN-CS596S 09/06 ChengWei S-6Y4 Printed in China...

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