Panasonic NN-SE284S User manual

© Panasonic Appliances Microwave Oven
(Shanghai) Co., Ltd. 2013.
NN-SE284S
NN-SE284B
NN-SE284W
CPH(CANADA)
Microwave Oven
Please file and use this manual together with the service manual for Model NN-S262SF (Order
No.SIMMC0203005C1)
ORDER NO.PAPMOSH1312046SE

2
NN-SE284S / NN-SE284B / NN-SE284W

3
NN-SE284S / NN-SE284B / NN-SE284W

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. Inverter defrost 6
2.4. Sensor cooking 6
2.5. Sensor reheat 7
3 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING
8
3.1. Check the grounding 8
3.2. Inverter warnings 8
3.3. Part replacement. 9
3.4. When the 20A fuse is blown due to the malfunction of the
interlock monitor switch: 9
3.5. Avoid inserting nails, wire etc. through any holes in the
unit during operation. 9
3.6. Verification after repair 9
3.7. Sharp edges 9
4 COMPONENT TEST PROCEDURE 10
4.1. Primary, Secondary Interlock Switch & Power Relay RY1
10
4.2. Interlock Monitor Switch 10
4.3. Magnetron 10
4.4. Inverter power supply (U) 11
4.5. Humidity sensor 11
5 MEASUREMENTS AND ADJUSTMENTS 12
5.1. Adjustment of primary interlock switch, secondary interlock
switch and interlock monitor switch. 12
5.2. Measurement of microwave output 12
6 PROCEDURE FOR MEASURING MICROWAVE ENERGY
LEAKAGE 13
6.1. Equipment 13
6.2. Procedure for measuring radiation leakage 13
6.3. Record keeping and notification after measurement 13
6.4. At least once a year, have the radiation monitor checked
for calibration by its manufacturer. 14
7 TROUBLESHOOTING GUIDE 15
7.1. (Troubleshooting) Oven stops operation during cooking
16
7.2. (Troubleshooting) Other problems 17
7.3. Trouble related to Digital Programmer Circuit 18
7.4. Troubleshooting of inverter circuit (U) and magnetron 19
7.5. SIMPLE WAY OF H.V. INVERTER/MAGNETRON
TROUBLESHOOTING 20
7.6. H.V.INVERTER BOARD MAIN PARTS LIST
(F606Y9X90AP) 20
8 EXPLODED VIEW AND PARTS LIST 21
8.1. EXPLODED VIEW 21
8.2. PARTS LIST 22
8.3. DOOR ASSEMBLY 24
8.4. ESCUTCHEON BASE ASSEMBLY 25
8.5. PACKING AND ACCESSORIES 27
8.6. WIRING MATERIALS 28
9 DIGITAL PROGRAMMER CIRCUIT 29
9.1. SCHEMATIC DIAGRAM 29
9.2. PARTS LIST 31
CONTENTS
Page Page
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NN-SE284S / NN-SE284B / NN-SE284W

1 SCHEMATIC DIAGRAM
5
NN-SE284S / NN-SE284B / NN-SE284W