Table of Contents
Troubleshooting
Related Manuals for Panasonic NN-A574SF
Summary of Contents for Panasonic NN-A574SF
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Page 1: Microwave Oven
ORDER NO.PHAMOS0906043C2 Microwave Oven NN-A574SF NN-A554WF NN-A524MF NN-CT579S NN-CT569M NN-CT559W BXQ (U.K.) BPQ (U.K.) EPG (Continental Europe) GPG (Germany) © Panasonic Home Appliances Microwave Oven (Shanghai) Co., Ltd. 2009. - Page 2 NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W...
- Page 3 NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W...
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Page 4: Table Of Contents
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W CONTENTS Page Page 1 SCHEMATIC DIAGRAM 5.1. Primary, Secondary Latch Switch interlocks & Power 2 DESCRIPTION OF OPERATING SEQUENCE Relay RY1 2.1. Variable power cooking control 5.2. Short Switch 2.2. -
Page 5: Schematic Diagram
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 1 SCHEMATIC DIAGRAM... -
Page 6: Description Of Operating Sequence
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 2 DESCRIPTION OF OPERATING SEQUENCE 2.1. Variable power cooking 2.4. Thermistor control The thermistor which fixed on magnetron detects magnetron temperature and make power down when the temperature High Voltage Inverter Power Supply (U) controls output power becomes abnormal high. -
Page 7: Cautions To Be Observed When Troubleshooting
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 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 8: Part Replacement
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 3.6. Verification 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. -
Page 9: Magnetron
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 5 COMPONENT TEST PROCEDURE WARNING 5.3. Magnetron 1. High voltage is present at the output terminals of the High Voltage Inverter (U) including aluminum heat sink during any cook cycle. -
Page 10: Inverter Power Supply (U)
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 5.5. Inverter power supply (U) d. Press Micro Power pad once. DO NOT try to REPAIR H.V. Inverter power supply 5. Program oven at High power for 1 minute and press [Start] (U).Replace complete H.V. -
Page 11: Measurements And Adjustments
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 6 MEASUREMENTS AND ADJUSTMENTS 6.1. Adjustment of primary latch 6.2. 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. -
Page 12: Troubleshooting Guide
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 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 13: Troubleshooting) Other Problems
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 7.2. (Troubleshooting) Other problems SYMPTOM CAUSE CORRECTIONS 1. Oven is dead. 1. Open or loose lead wire harness Check thermal cutout is defective. Fuse is OK. 2. Open thermal cutout / thermistor No display and no operation at all. -
Page 14: Troubleshooting Of Inverter Circuit (U) And Magnetron
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 7.3. 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. -
Page 15: Simple Way Of H.v. Inverter/Magnetron Troubleshooting
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 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. -
Page 16: Inverter Main Parts List (Z606Ym300Bp)
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 7.6. H.V. Inverter main parts list (Z606YM300BP) Ref. No. Part No. Part Name & Description Pcs/Set Remarks Q701 Z691EM300BP IGBT Q702 IGBT C701 ZCWF5184N300 FILM CAPACITOR C702 ZCQE2505T869 FILM CAPACITOR... -
Page 17: Exploded View And Parts List
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 8 EXPLODED VIEW AND PARTS LIST 8.1. EXPLODED VIEW... -
Page 18: Parts List
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 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 19 NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W Ref. No. Part No. Part Name & Description Pcs/Set Remarks Z605A7X50BP THERMISTOR U Z490S7X50BP CONVECTION FAN MOTOR Z40087X50BP PULLEY B Z402L7X50BP FAN CASE UNIT Z22397X50BP CONVECTION FAN Z41327X50BP PULLEY A...
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Page 20: Door Assembly
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 8.3. DOOR ASSEMBLY Ref. No. Part No. Part Name & Description Pcs/Set Remarks Z30185Q00AP DOOR KEY A Z302A7X50SBP DOOR A (U) A574SF BXQ,CT579S BPQ Z302A7X50SEP DOOR A (U) CT579S EPG... -
Page 21: Escutcheon Base Assembly
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 8.4. ESCUTCHEON BASE ASSEMBLY 8.4.1. NN-A574SF, NN-CT579S Ref. No. Part No. Part Name & Description Pcs/Set Remarks Z603L7X50BP D.P.CIRCUIT(AU) A574SF BXQ,CT579S BPQ Z603L7X50EP D.P.CIRCUIT(AU) CT579S EPG Z603Y7X50BP D.P.CIRCUIT(DU) A574SF BXQ,CT579S BPQ/GPG... - Page 22 NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 8.4.2. NN-A554WF, NN-A524MF, NN-CT569M, NN-CT559W Ref. No. Part No. Part Name & Description Pcs/Set Remarks Z603L7X60BP D.P. CIRCUIT (AU) A554WF BXQ,A524MF BXQ,CT559W BPQ,CT569M BPQ Z603L7X60GP D.P. CIRCUIT (AU) CT559W GPG,CT569M GPG...
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Page 23: Wiring Materials
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 8.5. WIRING MATERIALS Ref. No. Part No. Part Name & Description Pcs/Set Remarks Z030A7X60BP LEAD WIRE HARNESS Z030E6W50XP H.V.LEAD WIRE Z030F7X50GS LEAD WIRE HARNESS U A574SF BXQ,CT579S BPQ/EPG (INCLUDING THERMISTOR) -
Page 24: Packing And Accessories
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 8.6. PACKING AND ACCESSORIES Ref. No. Part No. Part Name & Description Pcs/Set Remarks Z00037X60BP INSTRUCTION MANUAL BPQ,BXQ Z00037X50EP INSTRUCTION MANUAL Z00037X60GP INSTRUCTION MANUAL Z01027X50SBX PACKING CASE,PAPER A574SF BXQ... -
Page 25: Digital Programmer Circuit
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 9 DIGITAL PROGRAMMER CIRCUIT 9.1. SCHEMATIC DIAGRAM (NN-A574SF, CT579S) - Page 26 NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W...
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Page 27: Schematic Diagram (Nn-A554Wf, A524Mf, Ct569M, Ct559W)
NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 9.2. SCHEMATIC DIAGRAM (NN-A554WF, A524MF, CT569M, CT559W) - Page 28 NN-A574SF / NN-A554WF / NN-A524MF / NN-CT579S / NN-CT569M / NN-CT559W 06/09 S-7X6 Printed in China...