Panasonic NN-SN747S - User Manual

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NN-SD797S

NN-SD787S

NN-SD767S

NN-SD767B

NN-SD767W

NN-SN797S

NN-SN757S

NN-SN747S

APH(USA)

CPH(CANADA)

Microwave Oven

Please file and use this specified manual together with the service manual for Model NN-T695 (ORDER NO.

PHAMOS0501001C7).

ORDER NO.PHAMOS0701003A1

Main Page

Questions and Answers

G
Gina JordanAug 6, 2025
Why does my Panasonic Microwave Oven power off after 37 seconds?
- F
  Frederick BeltranAug 6, 2025
  If your Panasonic Microwave Oven shuts off 37 seconds after starting, it could be due to an open magnetron wiring between the inverter and the magnetron terminal. In this case, check and repair the open magnetron circuit. Alternatively, a shorted D702 could be the cause, requiring replacement of the H.V. Inverter (F606Y8M00AP). If D702 is okay, consider replacing the magnetron.
M
Melissa MontgomeryAug 19, 2025
What to do if Panasonic Microwave Oven shuts off after 3 seconds?
- F
  Felicia ChenAug 19, 2025
  If your Panasonic Microwave Oven shuts off 3 seconds after starting, check for an open circuit in the Latch Switch, DPC, Power Relay, and CN701. If you find any defective components, replace them or correct the switch, cables, and connectors.

Summary

Service Safety and Precautions

General Service Warnings

Critical warnings for technicians regarding potential injury or death from electricity and microwave radiation.

Microwave Radiation Leakage Precautions

Procedures to prevent and test for microwave radiation leakage during servicing.

Lead-Free Solder Cautions

Notes on handling lead-free solder, including melting point differences and soldering iron settings.

High Voltage Inverter Safety

Inverter Power Supply Warnings

Specific dangers and warnings related to the high voltage and temperature of the inverter power supply.

Schematic Diagrams

APH Schematic Diagram

Electrical schematic and wiring diagram for APH models, detailing component connections.

Schematic Diagrams (CPH)

CPH Schematic Diagram

Electrical schematic and wiring diagram for CPH models, detailing component connections.

Measurements and Adjustments

Switch Adjustment and Output Measurement

Procedures for adjusting latch switches and measuring microwave output power.

Microwave Energy Leakage Procedure

Leakage Measurement and Recording

Steps for measuring, recording, and notifying about microwave energy leakage after servicing.

Troubleshooting and Inverter Parts

H.V. Inverter;Magnetron Troubleshooting

Method for diagnosing High Voltage Inverter/Magnetron issues using the 3/37 seconds rule.

H.V. Inverter Main Parts List

List of main components for the High Voltage Inverter board.

Component Exploded Views

Exploded View of Components

Visual representation of the microwave oven's components for identification.

Comprehensive Parts List

General Parts List

A list of common replacement parts with part numbers and descriptions.

Escutcheon Base Assemblies

NN-SD797 S;SD787 S Escutcheon Base

Detailed breakdown of the control panel escutcheon base for specific models.

Escutcheon Base Assemblies (NN-SD767 S)

NN-SD767 S Escutcheon Base

Detailed breakdown of the control panel escutcheon base for the NN-SD767S model.

Escutcheon Base Assemblies (NN-SD767 B;W)

NN-SD767 B;W Escutcheon Base

Detailed breakdown of the control panel escutcheon base for NN-SD767B/W models.

Escutcheon Base Assemblies (NN-SN797 S)

NN-SN797 S Escutcheon Base

Detailed breakdown of the control panel escutcheon base for the NN-SN797S model.

Escutcheon Base Assemblies (NN-SN757 S;SN747 S)

NN-SN757 S;SN747 S Escutcheon Base

Detailed breakdown of control panel escutcheon base for NN-SN757S/SN747S models.

Door Assembly and Wiring Materials

Door Assembly Components

List of parts comprising the microwave oven door assembly.

Wiring Materials

List of wiring harnesses and lead wires used in the appliance.

Packing and Accessories

Packing Materials and Instructions

List of paper and plastic materials used for packing the oven and installation instructions.

Digital Programmer Circuit Schematics

NN-SD797 S;SD787 S APH;CPH Circuit

Schematic diagram of the digital programmer circuit for NN-SD797S/SD787S APH/CPH models.

Digital Programmer Circuit Schematics (NN-SD767*)

NN-SD767* APH;CPH Circuit

Schematic diagram of the digital programmer circuit for NN-SD767* APH/CPH models.

Digital Programmer Circuit Schematics (NN-SN797 S)

NN-SN797 S APH Circuit

Schematic diagram of the digital programmer circuit for the NN-SN797S APH model.

Digital Programmer Circuit Schematics (NN-SN757 S)

NN-SN757 S APH;CPH Circuit

Schematic diagram of the digital programmer circuit for NN-SN757S APH/CPH models.

Digital Programmer Circuit Schematics (NN-SN747 S)

NN-SN747 S APH Circuit

Schematic diagram of the digital programmer circuit for the NN-SN747S APH model.

Model-Specific Parts Lists

NN-SD797 S;SD787 S & NN-SD767* Parts

Detailed parts list for NN-SD797S/SD787S and NN-SD767* model series.

Model-Specific Parts Lists (Cont.)

NN-SN797 S & NN-SN757 S Parts

Detailed parts list for NN-SN797S and NN-SN757S model series.

Model-Specific Parts Lists (Final)

NN-SN747 S Parts

Detailed parts list for the NN-SN747S model.