Panasonic NN-GF560M, Service Manual

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1 FEATURE CHART 5
2 CONTROL PANEL 5
3 SCHEMATIC DIAGRAM 6
4 DESCRIPTION OF OPERATING SEQUENCE 7
4.1. Variable power cooking control 7
4.2. Inverter power supply circuit 7
4.3. Turbo defrost, Auto cook 7
4.4. Grill cooking control 7
4.5. Combination Cooking 7
5 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING 8
5.1. Check the grounding 8
5.2. Inverter warnings 8
5.3. Part replacement. 9
5.4. When the 10A fuse is blown due to the malfunction of the
short switch: 9
5.5. Avoid inserting nails, wire etc. through any holes in the
unit during operation. 9
5.6. Verification after repair 9
5.7. Sharp edges 9
6 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 10
6.1. Inverter power supply 10
6.2. Magnetron 11
6.3. Digital programmer circuit (D.P.C) & Membrane Switch 11
6.4. Low voltage transformer and/or power relays (RY1, RY2,
RY3) 13
6.5. Fan motor 13
6.6. Quartz heater 14
6.7. Door assembly 14
6.8. Stirrer motor 15
7 COMPONENT TEST PROCEDURE 16
7.1. Primary, Secondary Latch Switch interlocks & Power
Relay RY1 16
7.2. Short Switch 16
7.3. Magnetron 16
7.4. Inverter power supply (U) 17
7.5. Temperature thermistor 17
8 MEASUREMENTS AND ADJUSTMENTS 18
8.1. Adjustment of primary latch switch, secondary latch switch
and short switch. 18
8.2. Measurement of microwave output 18
9 TROUBLESHOOTING GUIDE 19
9.1. (Troubleshooting) Oven stops operation during cooking 19
9.2. (Troubleshooting) Other problems 20
9.3. Troubleshooting of inverter circuit (U) and magnetron 21
9.4. Trouble related to Digital Programmer Circuit 22
9.5. SIMPLE WAY OF H.V. INVERTER/MAGNETRON
TROUBLESHOOTING 23
9.6. How to check the semiconductors using an OHM meter 23
9.7. H.V. Inverter main parts list (F606YM300BP) 24
10 EXPLODED VIEW AND PARTS LIST 25
10.1. EXPLODED VIEW 25
10.2. PARTS LIST 26
10.3. ESCUTCHEON BASE ASSEMBLY 27
10.4. DOOR ASSEMBLY 28
10.5. WIRING MATERIALS 29
10.6. PACKING AND ACCESSORIES 30
11 DIGITAL PROGRAMMER CIRCUIT 31
11.1. SCHEMATIC DIAGRAM 31
11.2. PARTS LIST 33
CONTENTS
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NN-GF560M