Panasonic NN-CD987W User manual

© 2007 Matsushita Electric Industrial Co., Ltd. All

rights reserved. Unauthorized copying and distribu-

tion is a violation of law.

ORDER NO. MOD0710292C3

Microwave Oven

Model No. NN-CD987W

Model No. NN-CD997S

TABLE OF CONTENTS PAGE PAGE

1 Warning-------------------------------------------------------------- 2

2 Specifications ----------------------------------------------------- 3

3 Location of Controls and Components ------------------- 4

4 Test Mode ----------------------------------------------------------- 5

5 Service Mode ------------------------------------------------------ 9

6 Troubleshooting Guide----------------------------------------10

7 Disassembly and Assembly Instructions ---------------18

8 Schematic Diagram---------------------------------------------21

9 Exploded View and Replacement Parts List -----------26

2

1Warning

3

2 Specifications

4

3 Location of Controls and Components

3.1. CONTROL PANEL

5

4 Test Mode

4.1. COMPONENT TEST

PROCEDURE

4.1.1. Primary Latch Switch,

Secondary (Secondary Latch

Switch and Power Relay 1)

Interlocks.

4.1.2. Short Switch / Monitor Circuit

4.1.3. Magnetron (NEW H.V.)

4.1.4. Inverter Power Supply (U)

(NEW H.V.)

6

4.1.5. Steam Sensor and Digital

Programmer Circuit

4.1.6. Oven temp sensor thermistor

4.2. MEASUREMENTS AND

ADJUSTMENTS

4.2.1. Adjustment of Primary latch switch,

Secondary latch switch

and short switch

4.2.2. Measurement of microwave output

7

8

4.3. HOW TO CHECK THE SEMICONDUCTORS USING AN OHM METER

9

5 Service Mode

5.1. OPERATION AND DIGITAL PROGRAMMER CIRCUIT

TEST PROCEDURE

10

6 Troubleshooting Guide

6.1. CAUTIONS TO BE OBSERVED

WHEN TROUBLESHOOTING

6.1.1. Check the grounding

6.1.2. Inverter Warnings (NEW H.V.)

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