Table Of Contents - Panasonic NN-GS597M Service Manual

NN-GS597M
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. Steam defrost, Auto cook & Steam reheat
4.4. Oven
4.5. Combination cook control
4.6. IR reheat
4.7. Steam function (Steam & Micro Power)
5 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING 10
5.1. Check the grounding
5.2. Inverter warnings
5.3. Confirm before repair
5.4. Part replacement
5.5. When the 10A fuse is blown due to the malfunction of the
short switch
5.6. Avoid inserting nails, wire etc. through any holes in the
unit during operation
5.7. Verification after repair
5.8. Sharp edges
5.9. Hot surface
6 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 12
6.1. Magnetron
6.2. Digital programmer circuit (D.P.C.) DU and low voltage
transformer
6.3. Digital programmer circuit (D.P.C) AU, (D.P.C.) HU,
membrane key board and power relay
6.4. Fan motor
6.5. H.V. Inverter
6.6. Upper heater
6.7. Door assembly
6.8. Pump
6.9. IR sensor
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5 6.10. Stirrer motor
5 6.11. Heater DU (steam heater)
6 7 COMPONENT TEST PROCEDURE
7 7.1. Primary latch switch Secondary Latch switch and power
7 relay RY3
7 7.2. Short switch & monitor
7 7.3. Magnetron
7 7.4. Membrane key board (Membrane switch assembly)
8 7.5. Inverter power supply (U)
8 7.6. Temperature thermistor
9 7.7. IR Sensor
8 MEASUREMENTS AND ADJUSTMENTS
10 8.1. Adjustment of Primary latch switch, Secondary latch
10 switch and Short switch.
11 8.2. Measurement of microwave output
11 9 TROUBLESHOOTING GUIDE
9.1. (Troubleshooting) Oven stops operation during cooking 24
11 9.2. (Troubleshooting) Other problems
9.3. Troubleshooting of inverter circuit (U) and magnetron
11 9.4. Trouble related to Digital Programmer Circuit
11 9.5. Simple way of H.V. Inverter/magnetron troubleshooting 27
11 9.6. How to check the semiconductors using an OHM meter 28
11 9.7. H.V. Inverter main parts list
10 EXPLODED VIEW AND PARTS LIST
12 10.1. EXPLODED VIEW
10.2. PARTS LIST
13 10.3. WATER TANK ASSEMBLY
10.4. ESCUTCHEON BASE ASSEMBLY
14 10.5. DOOR ASSEMBLY
14 10.6. WIRING MATERIALS
15 10.7. PACKING AND ACCESSORIES
15 11 DIGITAL PROGRAMMER CIRCUIT
16 11.1. SCHEMATIC DIAGRAM
17 11.2. PARTS LIST
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