Panasonic NN-ST557MW Schematic

NN-ST557M
NN-ST557W

HPE(Hong Kong)

YPQ(Singapore)

MPQ(Malaysia)

TPE(Thailand, Indonesia)

YTE(Others)

ORDER NO.PHAMOS0709042A3

Microwave Oven

Please file and use this manual together with the service manual for Model NN-S553/K593/K573/K543
(ORDER NO. SIMMC0306022C3).

© 2007 Panasonic Home Appliances Microwave
Oven (Shanghai) Co., Ltd. All rights reserved.
Unauthorized copying and distribution is a violation
of law.

NN-ST557M / NN-ST557W

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NN-ST557M / NN-ST557W

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NN-ST557M / NN-ST557W

CONTENTS

Page Page

1 SCHEMATIC DIAGRAM 5

2 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING

2.1. Check the grounding

2.2. Inverter warnings

2.3. Part replacement .

2.4. When the 10A fuse is blown due to the operation of the

short switch:

2.5. Avoid inserting nails, wire etc. through any holes in the

unit during operation.

2.6. Confirm after repair

2.7. Sharp edges

3 MEASUREMENTS AND ADJUSTMENTS

3.1. Adjustment of primary latch switch, secondary latch switch

and short switch.

6

6

6

7

7

7

7

7

8

8

3.2. Measurement of microwave output

4 EXPLODED VIEW AND PARTS LIST

4.1. EXPLODED VIEW

4.2. PARTS LIST

4.3. DOOR ASSEMBLY

4.4. WIRING MATERIALS

4.5. ESCUTCHEON BASE ASSEMBLY

4.6. PACKING AND ACCESSORIES

4.7. H.V. INVERTER MAIN PARTS LIST

5 DIGITAL PROGRAMMER CIRCUIT

5.1. SCHEMATIC DIAGRAM

5.2. PARTS LIST

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9

9

10

11

11

12

13

13

14

14

16

4

1 SCHEMATIC DIAGRAM

NN-ST557M / NN-ST557W

5