Table Of Contents - Panasonic NN-GD693S Service Manual

NN-GD693S
CONTENTS
1 SCHEMATIC DIAGRAM
2 DESCRIPTION OF OPERATING SEQUENCE
2.1. Variable power cooking control
2.2. Inverter power supply circuit
2.3. Inverter defrost
2.4. Sensor cooking
2.5. Sensor reheat
2.6. Steam sensor and digital programmer circuit
2.7. Thermistor
3 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING 8
3.1. Check the grounding
3.2. Inverter warnings
3.3. Part replacement.
3.4. When the 20A fuse is blown due to the malfunction of the
monitor switch:
3.5. Avoid inserting nails, wire etc. through any holes in the
unit during operation.
3.6. Verification after repair
3.7. Sharp edges
4 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 10
4.1. Magnetron
4.2. Digital programmer circuit (D.P.C)
4.3. Low voltage transformer and/or power relays (RY1, RY2)
4.4. Fan motor
4.5. Door assembly
4.6. Turntable motor
4.7. Quartz heater
4.8. Steam sensor
4.9. Inverter power supply
5 COMPONENT TEST PROCEDURE
5.1. Primary, Secondary Interlock Switch & Power Relay RY1
5.2. Monitor Switch
Page
5 5.3. Magnetron
6 5.4. Inverter power supply (U)
6 5.5. Temperature thermistor
6 6 MEASUREMENTS AND ADJUSTMENTS
6 6.1. Adjustment of primary interlock switch, secondary interlock
6 switch and monitor switch.
7 6.2. Measurement of microwave output
7 7 PROCEDURE FOR MEASURING MICROWAVE ENERGY
7 LEAKAGE
7.1. Equipment
8 7.2. Procedure for measuring radiation leakage
8 7.3. Record keeping and notification after measurement
9 7.4. At least once a year, have the radiation monitor checked
for calibration by its manufacturer.
9 8 TROUBLESHOOTING GUIDE
8.1. (Troubleshooting) Oven stops operation during cooking 22
9 8.2. (Troubleshooting) Other problems
9 8.3. Troubleshooting of inverter circuit (U) and magnetron
9 8.4. Trouble related to Digital Programmer Circuit
8.5. SIMPLE WAY OF H.V. INVERTER/MAGNETRON
10 TROUBLESHOOTING
10 8.6. H.V.INVERTER BOARD MAIN PARTS LIST
(F606Y9X90AP)
11 8.7. How to check the semiconductors using an OHM meter 27
11 9 EXPLODED VIEW AND PARTS LIST
11 9.1. EXPLODED VIEW
13 9.2. PARTS LIST
13 9.3. ESCUTCHEON BASE ASSEMBLY
14 9.4. DOOR ASSEMBLY
15 9.5. WIRING MATERIALS
16 9.6. PACKING AND ACCESSORIES
10 DIGITAL PROGRAMMER CIRCUIT
16 10.1. SCHEMATIC DIAGRAM
16 10.2. PARTS LIST
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