Related Manuals for Panasonic NN-GF574S
Summary of Contents for Panasonic NN-GF574S
- Page 1 ORDER NO.PAPMOSH1410034CE Microwave Oven NN-GF574S NN-GF574M RPH (MEXICO & LATIN AMERICA) © Panasonic Appliances Microwave Oven (Shanghai) Co., Ltd. 2014.
- Page 2 NN-GF574S / NN-GF574M...
- Page 3 NN-GF574S / NN-GF574M...
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Page 4: Table Of Contents
NN-GF574S / NN-GF574M CONTENTS Page Page 1 FEATURE CHART 7.1. Primary, Secondary Interlock Switch & Power Relay RL1 2 CONTROL PANEL 3 SCHEMATIC DIAGRAM 7.2. Interlock monitor Switch 4 DESCRIPTION OF OPERATING SEQUENCE 7.3. Magnetron 4.1. Variable power cooking control 7.4. -
Page 5: Feature Chart
NN-GF574S / NN-GF574M 1 FEATURE CHART 2 CONTROL PANEL... -
Page 6: Schematic Diagram
NN-GF574S / NN-GF574M 3 SCHEMATIC DIAGRAM... -
Page 7: Description Of Operating Sequence
NN-GF574S / NN-GF574M 4 DESCRIPTION OF OPERATING SEQUENCE 4.1. Variable power cooking 4.3. Turbo defrost, Auto cook 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 8: Cautions To Be Observed When Troubleshooting
NN-GF574S / NN-GF574M 5 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-GF574S / NN-GF574M 5.6. 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. are neither loosen or missing. -
Page 10: Disassembly And Parts Replacement Procedure
NN-GF574S / NN-GF574M 6 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 6.1. Inverter power supply 5. Release locking tabs connecting inverter air guide with inverter bracket. CAUTIONS 6. Remove 1 screw holding H.V.Inverter to Inverter bracket. 1. Always leave the grounding plate in place. -
Page 11: Magnetron
NN-GF574S / NN-GF574M 6.2. Magnetron 6.3. Digital programmer circuit (D.P.C) & Membrane Switch 1. Steps same as disassembly of H.V. Inverter step 1 to step NOTE: 2. Remove 1 screw holding thermistor on magnetron. Be sure to ground any static electric charge built up on your body before handling the D.P.C. - Page 12 NN-GF574S / NN-GF574M 3. Disconnect connector CN701 from H.V. Inverter board. 4. Remove 6 screws holding D.P.C. board on escutcheon base. 5. Separate D.P.C board from tabs on the escutcheon base and remove D.P.C board. To replace membrane key board 6.
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Page 13: Low Voltage Transformer And/Or Power Relays (Rl1,Rl3)
NN-GF574S / NN-GF574M 6.4. Low voltage transformer 6.5. Fan motor and/or power relays (RL1,RL3) 1. Disconnect 2 lead wires from fan motor terminals. 2. Remove 4 screws holding inverter reinforcement bracket A NOTE: on right heater panel & base plate respectively. -
Page 14: Quartz Heater
NN-GF574S / NN-GF574M 6.7. Door assembly 6.6. Quartz heater 1. Remove door C from door E by carefully pulling outward, 1. Disconnect lead wires from heater terminals. starting from upper right hand corner using a flat blade 2. Remove 1 screw holding reinfercement bracket & heater screwdriver. -
Page 15: Stirrer Motor
NN-GF574S / NN-GF574M 6.8. Stirrer motor 1. Remove the motor cover by breaking off at the 8 spots indicated by arrows with a cutter or the like. NOTE: After removing the motor cover, be sure that cut portions are properly trimmed or bent to the inside so that no sharp edges will be exposed to outside. -
Page 16: Component Test Procedure
NN-GF574S / NN-GF574M 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 17: Inverter Power Supply (U)
NN-GF574S / NN-GF574M 7.4. Inverter power supply (U) a. After approximately 3 seconds, oven stops operating. b. During oven operation, input current DO NOT try to REPAIR H.V. Inverter power supply approximately 0.4A. (U).Replace complete H.V. Inverter(U) Unit. INPUT CURRENT... -
Page 18: Measurements And Adjustments
NN-GF574S / NN-GF574M 8 MEASUREMENTS AND ADJUSTMENTS 8.1. Adjustment of Primary 8.2. Measurement of microwave interlock switch, Secondary output interlock switch and Short The output power of the magnetron can be determined by switch. performing IEC standard test procedures. However,due to the complexity of IEC test procedures, it is recommended to test 1. -
Page 19: Troubleshooting Guide
NN-GF574S / NN-GF574M 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 proper test equipment because this circuit generates very large current and high voltage. Operating a misaligned inverter circuit is dangerous. -
Page 20: Troubleshooting) Other Problems
NN-GF574S / NN-GF574M 9.2. (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 21: Troubleshooting Of Inverter Circuit (U) And Magnetron
NN-GF574S / NN-GF574M 9.3. 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 22: Trouble Related To Digital Programmer Circuit
NN-GF574S / NN-GF574M 9.4. 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 IC10 pin4 voltage Abnormal 0V IC25 →Step3... -
Page 23: Simple Way Of H.v. Inverter/Magnetron Troubleshooting
NN-GF574S / NN-GF574M 9.5. 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. Procedure: Follow the matrix table below to identify the problem source. -
Page 24: How To Check The Semiconductors Using An Ohm Meter
NN-GF574S / NN-GF574M 9.6. How to check the semiconductors using an OHM meter 9.7. H.V.INVERTER BOARD MAIN PARTS LIST (F606Y9X90AP) Ref. No. Part No. Part Name & Description Pcs/Set Remarks DB701 B0FBCR000051 BRIDGE DIODE 25A,600V L701 F5020W100AP CHOKE COIL Q701... -
Page 25: Exploded View And Parts List
NN-GF574S / NN-GF574M 10 EXPLODED VIEW AND PARTS LIST 10.1. EXPLODED VIEW... -
Page 26: Parts List
NN-GF574S / NN-GF574M 10.2. 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 27: Escutcheon Base Assembly
NN-GF574S / NN-GF574M 10.3. ESCUTCHEON BASE ASSEMBLY Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603LBN10RP D.P.CIRCUIT(AU) F630YBN10BRP MEMBRANE SWITCH (U) GF574S F630YBN00BRP MEMBRANE SWITCH (U) GF574M F8034BN00SHP ESCUTCHEON BASE F891PBN60SRP DOOR OPENING BUTTON (U) GF574S F8072BN00SHP DOOR OPENING BUTTON... -
Page 28: Door Assembly
NN-GF574S / NN-GF574M 10.4. DOOR ASSEMBLY Ref. No. Part No. Part Name & Description Pcs/Set Remarks F30186P40AG DOOR KEY A F302ABN10SRP DOOR A(U) GF574S F302ABN00SHP DOOR A(U) GF574M F301P9L30RE DOOR E(U) F30216P40AG DOOR KEY SPRING F30859Q30AP DOOR C... -
Page 29: Wiring Materials
NN-GF574S / NN-GF574M 10.5. WIRING MATERIALS Ref. No. Part No. Part Name & Description Pcs/Set Remarks F030ABN00RP LEAD WIRE HARNESS F030E-1R90 H.V.LEAD WIRE F0353BN50QP THERMISTOR HARNESS... -
Page 30: Packing And Accessories
NN-GF574S / NN-GF574M 10.6. PACKING AND ACCESSORIES Ref. No. Part No. Part Name & Description Pcs/Set Remarks F0003BN00RP INSTRUCTION MANUAL F0102BN10SRP PACKING CASE,PAPER GF574S F0102BN00SRP PACKING CASE,PAPER GF574M F01049Q30AP UPPER FILLER F01059Q30AP LOWER FILLER F01067C50AP P.E.BAG F01078100XN DOOR SHEET F060VBG00XP... -
Page 31: Digital Programmer Circuit
NN-GF574S / NN-GF574M 11 DIGITAL PROGRAMMER CIRCUIT 11.1. SCHEMATIC DIAGRAM... - Page 32 NN-GF574S / NN-GF574M...
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Page 33: Parts List
NN-GF574S / NN-GF574M 11.2. PARTS LIST Ref. No. Part No. Part Name & Description Pcs/Set Remarks BZ210 L0DDEA000014 BUZZER 2.0KHz DISP110 L5AYAYY00291 F67529L60XP DIFFUSION SHEET DISP1 HOLDER F66179L60XP LCD HOLDER D4EAY271A036 ZENER RESISTOR 270V VA2,VA3 D4EAY112A036 ZENER RESISTOR 1100V MN69F009KC1 L.S.I.