Panasonic NN-J993 Service Manual
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Order No. MOD0311270C3
Microwave Oven
NN-J993
© 2003 Matsushita Electric Industrial Co., Ltd. All
rights
reserved.
Unauthorized
copying
and
distribution is a violation of law.

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Questions and answers

Supriya Chattopadhyay
June 1, 2025

Microwave Oven NNJ993 is not heating ...stopped after few seconds

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1 comments:
Mr. Anderson
June 1, 2025

The Panasonic NN-J993 microwave oven may not be heating and is stopping after a few seconds due to a faulty thermistor. According to the test procedure, if the oven stops after approximately 23 seconds and is not heating, the thermistor's resistance should be checked. If the resistance is out of the specified range, the thermistor is defective and must be replaced. This fault can prevent proper heating and cause the oven to shut off early.

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Summary of Contents for Panasonic NN-J993

  • Page 1 Order No. MOD0311270C3 Microwave Oven NN-J993 © 2003 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying distribution is a violation of law.
  • Page 2 NN-J993...
  • Page 3 NN-J993 CONTENTS Page Page 1 FEATURE CHART 7 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING 15 2 CONTROL PANEL 8 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 19 3 OPERATION AND DIGITAL PROGRAMMER CIRCUIT TEST 9 COMPONENT TEST PROCEDURE PROCEDURE 10 MEASUREMENTS AND ADJUSTMENTS 4 SCHEMATIC DIAGRAM 11 TROUBLESHOOTING GUIDE (NEW H.V.)
  • Page 4 NN-J993 1 FEATURE CHART...

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