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NN-S453WF
NN-S553WF NN-K593MF
NN-K573MF NN-K573WF
NN-K543WF
QPQ(Australia, New Zealand)
HPE(Hong Kong)
YPQ(Singapore)
MPQ(Malaysia)
TPE(Thailand, Indonesia)
LPK(Philippines)
YTE(Others)
KTE(UAE, Egypt)
PTE( Iran)
KPQ(Kuwait, Doha, Qatar, Oman, Bahrain, Pakistan)
STM(Saudi Arabia)
ZPE(CIS Countries)
© 2003 Shanghai Matsushita Microwave Oven Co.,
Ltd. All rights reserved. Unauthorized copying and
distribution is a violation of law.
ORDER NO.SIMMC0306022C3
Microwave Oven
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Table of Contents
Troubleshooting
Related Manuals for Panasonic NN-K593MF
Summary of Contents for Panasonic NN-K593MF
- Page 1 ORDER NO.SIMMC0306022C3 Microwave Oven NN-S453WF NN-S553WF NN-K593MF NN-K573MF NN-K573WF NN-K543WF QPQ(Australia, New Zealand) HPE(Hong Kong) YPQ(Singapore) MPQ(Malaysia) TPE(Thailand, Indonesia) LPK(Philippines) YTE(Others) KTE(UAE, Egypt) PTE( Iran) KPQ(Kuwait, Doha, Qatar, Oman, Bahrain, Pakistan) STM(Saudi Arabia) ZPE(CIS Countries) © 2003 Shanghai Matsushita Microwave Oven Co., Ltd.
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- Page 3 NN-S453WF...
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Page 4: Table Of Contents
5 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 10 15 PACKING AND ACCESORIES 6 COMPONENT TEST PROCEDURE 16 DIGITAL PROGRAMMER CIRCUIT (NN-S453WF/S553WF) 7 MEASUREMENTS AND ADJUSTMENTS 17 DIGITAL PROGRAMMER CIRCUIT (NN-K593MF) 8 PROCEDURE FOR MEASURING MICROWAVE ENERGY 18 DIGITAL PROGRAMMER CIRCUIT (NN-K573/K543WF) LEAKAGE 19 DIGITAL PROGRAMMER CIRCUIT(EXCEPT NN-K593MF) -
Page 5: Schematic Diagram (Nn-S453Wf & Nn-S553Wf)
NN-S453WF 1 SCHEMATIC DIAGRAM (NN-S453WF & NN-S553WF) -
Page 6: Schematic Diagram (Nn-K593Mf/K573/K543Wf)
NN-S453WF 2 SCHEMATIC DIAGRAM (NN-K593MF/K573/K543WF) -
Page 7: Description Of Operating Sequence
NN-S453WF 3 DESCRIPTION OF OPERATING SEQUENCE 3.1. Variable power cooking 3.3. Inverter turbo defrost control When this 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: Cautions To Be Observed When Troubleshooting
NN-S453WF 4 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 9 NN-S453WF 4.3. Part replacement. 4.7. Sharp edges When any part or component is to be replaced, always ensure Caution that the power cord is removed from the wall outlet. Please use caution when unpacking, installing or moving 4.4. When the 10A fuse is blown the unit, as some exposed edges may be sharp to the touch and cause injury if not handled with care.
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Page 10: Disassembly And Parts Replacement Procedure
NN-S453WF 5 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 5.1. Magnetron 5.2. Digital programmer circuit (D.P.C) and membrane key 1. Discharge high voltage charge. board. 2. Remove 1 screw holding air guide A. 3. Remove 1 screw holding air guide F. NOTE: 4. - Page 11 NN-S453WF 5.3. Low voltage transformer and/or power relays (RY1, RY2) NOTE: Be sure to ground any static electric charge built up on your body before handling the D.P.C. (A) Using solder wick or a desoldering tool and 30W soldering iron, carefully remove all solder from the terminal pins of the low voltage transformer and/or power relays.
- Page 12 NN-S453WF 5.7. Steam sensor 1. Disconnect connector CN2 from digital programmer circuit board. 2. Disengage catch hooks on sensor cover c from orifice. 3. Remove steam sensor from orifice. NOTE: When installing the steam sensor, make sure that the direction of steam sensor is as shown in figure. 5.6.
- Page 13 NN-S453WF 5.8. Quartz heater(For Grill Models) 1. Disconnect lead wires from heater terminals. 2. Remove 2 screws holding heater supports. 3. Remove the heater by pulling it out.
- Page 14 NN-S453WF 7. Remove 2 screws holding H.V.Inverter to Inverter bracket. 5.9. Inverter power supply CAUTIONS 1.Always securely tighten the ground screw through the bottom of the chassis (base). 2.Securely connect 3 lead wire connectors. 3.Make sure the heat sink has enough space (gap) from the oven. Take special care not to touch any lead wire to the aluminum heat sink because it is hot.
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Page 15: Component Test Procedure
NN-S453WF 6 COMPONENT TEST PROCEDURE 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 cycle. 2. It is neither necessary nor advisable to attempt measurement of the high voltage. - Page 16 NN-S453WF 6.5. Inverter power supply (U) DO NOT try to repair H.V. Inverter Power Supply (U) Replace complete H.V. Inverter(U) Unit. DANGER HIGH VOLTAGE Test if failure codes of H97 or H98 appear by doing the following procedure. It is recommended to use an AC line input current Ampere meter for testing.
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Page 17: Measurements And Adjustments
NN-S453WF 7 MEASUREMENTS AND ADJUSTMENTS 7.1. Adjustment of primary latch 7.2. Measurement of microwave switch, secondary latch switch output and short switch. The output power of the magnetron can be determined by performing IEC standard test procedures. However,due to the 1. -
Page 18: Procedure For Measuring Microwave Energy Leakage
NN-S453WF 8 PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE 8.2.2. Measurements with a fully assembled oven. After all components, including outer panel are fully assembled, measure for radiation leakage around the door periphery, the door viewing window, the exhaust opening and air inlet openings. -
Page 19: Troubleshooting Guide
NN-S453WF 9 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 sufficient test equipment because this circuit handles very large current and high voltage. Operating a misaligned inverter circuit is dangerous. 2. - Page 20 NN-S453WF SYMPTOM CAUSE CORRECTIONS 1. Oven is dead. Open or loose lead wire harness Check fan motor if thermal cutout is Open thermal cutout defective. Fuse is OK. Open low voltage transformer No display and no operation at all. Defective DPC 2.
- Page 21 NN-S453WF 9.2. 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. H97, H98, and H99 are the provided failure codes to indicate magnetron and inverter circuit problem areas. This section explains failure codes of H97, H98, and H99.
- Page 22 (For NN-S453WF/S553WF) Normal BZ, Q224 No beep sound IC-1 pin 8 voltage Abnormal IC-1 (For NN-K593MF/K573MF/K573WF/K543WF) Normal BZ, Q224 Power relay A(RY-2) does not turn on even IC-1 pin 9 voltage while Abnormal IC-1 though the program has been set and the operation →...
- Page 23 NN-S453WF 9.4. How to check the semiconductors using an OHM meter INVERTER BOARD PARTS LIST (F606Y4V00XN) Ref. No. Part No. Part Name & Description Pcs/Set Remarks C701 AECQ2G104JC1 CAPACITOR 0.1µF , 500VDC C702 ECQE2405T847 CAPACITOR 4µF , 250VDC C703 AECQ2H454JC3 CAPACITOR 0.45µF , 500VDC C704 , C705...
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Page 25: Parts List
NN-S453WF 11 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 26: Door Assembly
NN-S453WF 12 DOOR ASSEMBLY Ref. No. Part No. Part Name & Description Pcs/Set Remarks F30185Q00AP DOOR KEY A F30015Q00HBP DOOR A S453WF, S553WF(EXCEPT LPK), K573WF, K543WF F30015Q00HAP DOOR A S553WF LPK F30015Q00SBP DOOR A K593MF, K573MF(EXCEPT LPK) F30015Q00SAP DOOR A K573MF LPK F302K5Q00AP DOOR E (U) -
Page 27: Escutcheon Base Assembly
NN-S453WF 14 ESCUTCHEON BASE ASSEMBLY Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603L5Q40QP D.P.CIRCUIT(AU) S453WF QPQ F603L5Q60HP D.P.CIRCUIT(AU) S553WF HPE, S553WF TPE F603L5Q60MP D.P.CIRCUIT(AU) S553WF MPQ, S553WF YPQ F603L5Q60YT D.P.CIRCUIT(AU) S553WF YTE F603L5Q60LP D.P.CIRCUIT(AU) S553WF LPK F603L5Q60ZP D.P.CIRCUIT(AU) S553WF ZPE F603L6A10HP... - Page 28 NN-S453WF Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603L6A10KT D.P.CIRCUIT(AU) K573WF KTE, K573WF PTE F603L6A10KP D.P.CIRCUIT(AU) K573WF KPQ F603L6A10ST D.P.CIRCUIT(AU) K573WF STM F603L6A10ZP D.P.CIRCUIT(AU) K573MF ZPE F603L5R30KT D.P.CIRCUIT(AU) K543WF KTE, K543WF PTE F603L5R30HP D.P.CIRCUIT(AU) K543WF HPE, K543WF TPE F603L5R30MP D.P.CIRCUIT(AU) K543WF MPQ...
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Page 29: Packing And Accesories
NN-S453WF 15 PACKING AND ACCESORIES Ref. No. Part No. Part Name & Description Pcs/Set Remarks F00035Q40QP INSTRUCTION MANUAL S453WF F00035Q60HP INSTRUCTION MANUAL S553WF (HPE, TPE, YTE, YPQ, MPQ, LPK) F00035Q60ZP INSTRUCTION MANUAL S553WF (ZPE) F00035R90HP INSTRUCTION MANUAL K593MF F00036A10HP INSTRUCTION MANUAL K573MF (HPE, TPE, MPQ, YTE, LPK, YPQ) F00036A10KP INSTRUCTION MANUAL... -
Page 30: Digital Programmer Circuit (Nn-S453Wf/S553Wf)
NN-S453WF 16 DIGITAL PROGRAMMER CIRCUIT (NN-S453WF/S553WF) SCHEMATIC DIAGRAM... - Page 31 NN-S453WF...
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Page 32: Digital Programmer Circuit (Nn-K593Mf)
NN-S453WF 17 DIGITAL PROGRAMMER CIRCUIT (NN-K593MF) SCHEMATIC DIAGRAM... - Page 33 NN-S453WF...
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Page 34: Digital Programmer Circuit (Nn-K573/K543Wf)
NN-S453WF 18 DIGITAL PROGRAMMER CIRCUIT (NN-K573/K543WF) SCHEMATIC DIAGRAM... - Page 35 NN-S453WF...
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Page 36: Digital Programmer Circuit(Except Nn-K593Mf)
NN-S453WF 19 DIGITAL PROGRAMMER CIRCUIT(EXCEPT NN-K593MF) PARTS LIST Ref. No. Part No. Part Name & Description Pcs/Set Remarks BZ310 AEFBAT2001 BUZZER 2.0KHz C221 AECUU06F103Z CHIP CAPACITOR 0.01µF/50V C484 AECUU06F103Z CHIP CAPACITOR 0.01µF/50V (K573MF) C343 AECUU06C101J CHIP CAPACITOR 100PF/50V C12, C340, C440... -
Page 37: Digital Programmer Circuit (Nn-K593Mf)
NN-S453WF 20 DIGITAL PROGRAMMER CIRCUIT (NN-K593MF) PARTS LIST Ref. No. Part No. Part Name & Description Pcs/Set Remarks BZ310 AEFBAT2001 BUZZER 2.0KHz C80, C81, C221, C484, C486 AECUU06F103Z CHIP CAPACITOR 0.01µF/50V C90, C343 AECUU06C101J CHIP CAPACITOR 100PF/50V C12, C222, C340, C440...