Table Of Contents - Panasonic NN-GF574S Service Manual

NN-GF574S / NN-GF574M
CONTENTS
1 FEATURE CHART
2 CONTROL PANEL
3 SCHEMATIC DIAGRAM
4 DESCRIPTION OF OPERATING SEQUENCE
4.1. Variable power cooking control
4.2. Inverter power supply circuit
4.3. Turbo defrost, Auto cook
4.4. Grill cooking control
4.5. Combination Cooking
5 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING 8
5.1. Check the grounding
5.2. Inverter warnings
5.3. Part replacement.
5.4. When the 20A fuse is blown due to the malfunction of the
interlock monitor switch:
5.5. Avoid inserting nails, wire etc. through any holes in the
unit during operation.
5.6. Verification after repair
5.7. Sharp edges
6 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 10
6.1. Inverter power supply
6.2. Magnetron
6.3. Digital programmer circuit (D.P.C) & Membrane Switch 11
6.4. Low voltage transformer and/or power relays (RL1,RL3) 13
6.5. Fan motor
6.6. Quartz heater
6.7. Door assembly
6.8. Stirrer motor
7 COMPONENT TEST PROCEDURE
Page
5 7.1. Primary, Secondary Interlock Switch & Power Relay RL1
5
6 7.2. Interlock monitor Switch
7 7.3. Magnetron
7 7.4. Inverter power supply (U)
7 7.5. Temperature thermistor
7 8 MEASUREMENTS AND ADJUSTMENTS
7 8.1. Adjustment of Primary interlock switch, Secondary
7 interlock switch and Short switch.
8.2. Measurement of microwave output
8 9 TROUBLESHOOTING GUIDE
8 9.1. (Troubleshooting) Oven stops operation during cooking 19
9 9.2. (Troubleshooting) Other problems
9.3. Troubleshooting of inverter circuit (U) and magnetron
9 9.4. Trouble related to Digital Programmer Circuit
9.5. SIMPLE WAY OF H.V. INVERTER/MAGNETRON
9 TROUBLESHOOTING
9 9.6. How to check the semiconductors using an OHM meter 24
9 9.7. H.V.INVERTER BOARD MAIN PARTS LIST
(F606Y9X90AP)
10 10 EXPLODED VIEW AND PARTS LIST
11 10.1. EXPLODED VIEW
10.2. PARTS LIST
10.3. ESCUTCHEON BASE ASSEMBLY
13 10.4. DOOR ASSEMBLY
14 10.5. WIRING MATERIALS
14 10.6. PACKING AND ACCESSORIES
15 11 DIGITAL PROGRAMMER CIRCUIT
16 11.1. SCHEMATIC DIAGRAM
11.2. PARTS LIST
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