Panasonic NN-C784MF User manual

© 2008 Panasonic Home Appliances Microwave
Oven (Shanghai) Co., Ltd. All rights reserved.
Unauthorized copying and distribution is a violation
of law.
NN-C784MF
TTE (Indonesia)
Microwave Oven
ORDER NO.PHAMOS0805017C3

2
NN-C784MF

3
NN-C784MF

1 SCHEMATIC DIAGRAM 5
2 DESCRIPTION OF OPERATING SEQUENCE 6
2.1. Variable power cooking control 6
2.2. Inverter power supply circuit 6
2.3. Turbo defrost, Auto cook 6
2.4. Sensor cooking 6
2.5. Sensor reheat 7
2.6. Steam sensor and digital programmer circuit 7
2.7. Convection Cooking Control 7
2.8. Combination Cooking 8
3 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING
9
3.1. Check the grounding 9
3.2. Inverter warnings 9
3.3. Part replacement. 10
3.4. When the 10A fuse is blown due to the malfunction of the
short switch: 10
3.5. Avoid inserting nails, wire etc. through any holes in the
unit during operation. 10
3.6. Verification after repair 10
3.7. Sharp edges 10
4 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE
11
4.1. Magnetron 11
4.2. Digital Programmer Circuit (D.P.C.), membrane key board
and power relay. 11
4.3. H.V. Inverter 12
4.4. Door assembly 13
4.5. Turntable motor 14
4.6. Heater 14
4.7. Steam sensor 15
5 COMPONENT TEST PROCEDURE 16
5.1. Primary, Secondary Latch Switch interlocks & Power
Relay RY1 16
5.2. Short switch & monitor 16
5.3. Magnetron 16
5.4. Inverter power supply (U) 17
5.5. Temperature thermistor 17
6 MEASUREMENTS AND ADJUSTMENTS 18
6.1. Adjustment of primary latch switch, secondary latch switch
and short switch. 18
6.2. Measurement of microwave output 18
7 TROUBLESHOOTING GUIDE 19
7.1. (Troubleshooting) Oven stops operation during cooking
19
7.2. (Troubleshooting) Other problems 20
7.3. Trouble related to Digital Programmer Circuit 21
7.4. Troubleshooting of inverter circuit (U) and magnetron 22
7.5. Simple way of H.V. Inverter/magnetron troubleshooting
23
7.6. How to check the semiconductors using an OHM meter
23
7.7. H.V. INVERTER MAIN PARTS LIST (F606Y4V00XN) 24
8 EXPLODED VIEW AND PARTS LIST 25
8.1. EXPLODED VIEW 25
8.2. PARTS LIST 26
8.3. WIRING MATERIALS 27
8.4. DOOR ASSEMBLY 28
8.5. ESCUTCHEON BASE ASSEMBLY 29
8.6. PACKING AND ACCESSORIES 30
9 DIGITAL PROGRAMMER CIRCUIT 31
9.1. SCHEMATIC DIAGRAM 31
9.2. PARTS LIST 33
CONTENTS
Page Page
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NN-C784MF

1 SCHEMATIC DIAGRAM
5
NN-C784MF