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Panasonic NN-GT462M User Manual

Panasonic NN-GT462M
34 pages
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© Panasonic Appliances Microwave Oven
(Shanghai) Co., Ltd. 2012.
NN-GD462M
NN-GD452W
NN-GT462M
EPG (Continental Europe)
GPG (Germany)
WPG (Switzerland)
SPG (Norway, Finland, Sweden, Denmark)
Microwave Oven
ORDER NO.PAPMOSH1202017CE

Table of Contents

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Panasonic NN-GT462M Specifications

General IconGeneral
Microwave Power900 W
Grill Power1000 W
TurntableYes
Voltage230 V
Frequency50 Hz
TypeMicrowave with Grill
Control TypeElectronic
Cooking ProgramsAuto Cook, Defrost
Door OpeningSide

Summary

Specification

Safety and Precautions

General Warnings for Technicians

Critical safety alerts advising against unauthorized servicing and highlighting potential dangers.

Lead-Free Solder Handling Caution

Guidelines for safely working with lead-free solder, including temperature settings for soldering irons.

High Voltage and Heat Hazards

Inverter Power Supply Dangers

Details the severe risks associated with high voltage and temperature in the inverter circuit.

Handling Prohibitions

Lists essential 'Do Not' instructions for safely handling the inverter power supply.

Schematic Diagram Overview

Operating Sequence Descriptions

Variable Power Cooking Control

Explains how the oven controls microwave output power using PWM signals.

Inverter Power Supply Circuit Operation

Details the function of the inverter circuit in generating high voltage for the magnetron.

Defrost and Auto Cook Functions

Describes the automatic defrost and auto cook modes of the microwave oven.

Grill Cooking Control

Explains the operation of the grill heating element and its control.

Sensor Cooking Operation

Details how the steam sensor enables automatic cooking based on food moisture.

Steam Sensor and Programmer Circuit Test

Troubleshooting Safety Cautions

Grounding Checks

Emphasizes the critical importance of proper grounding for microwave oven safety.

Inverter High Voltage Warnings

Highlights severe dangers of high voltage and heat when working with the inverter.

High Voltage Capacitor Discharge Procedure

Part Replacement Guidelines

10A Fuse Blow Troubleshooting

Preventing Microwave Leakage

Post-Repair Verification Steps

Sharp Edge Hazard Warning

Disassembly and Parts Replacement

Magnetron Removal Procedure

Step-by-step guide for safely removing and replacing the magnetron.

Digital Programmer Circuit (D.P.C) Removal

Instructions for accessing and removing the D.P.C. board and its membrane keypad.

Low Voltage Transformer/Relay Replacement

Fan Motor Replacement Procedure

Door Assembly Disassembly

Turntable Motor Replacement

Quartz Heater Replacement Procedure

Steam Sensor Replacement Procedure

Inverter Power Supply Replacement Procedure

Component Test Procedures

Latch Switch and Power Relay Testing

Tests for verifying the continuity and operation of door latch switches and power relays.

Short Switch Continuity Test

Procedure to test the continuity of the short switch based on door position.

Magnetron Testing Methods

Tests to diagnose magnetron issues, including filament continuity and case shorts.

Keyboard Membrane Test

Procedure to check the continuity of the membrane switch assembly pads.

Inverter Power Supply (U) Test Procedure

Temperature Thermistor Test

Measurements and Adjustments

Latch Switch Adjustments

Instructions for adjusting door hook assembly for proper latch switch engagement.

Microwave Output Measurement

Method for measuring microwave power output by temperature rise of water.

Troubleshooting Guide - Operational Stops

Oven Stops During Cooking (3s/23s)

Diagnoses and corrections for the oven stopping after 3 or 23 seconds of operation.

Troubleshooting Other Problems

Inverter & Magnetron Troubleshooting (Error Codes)

H.V. Inverter/Magnetron Troubleshooting (Simple Method)

Semiconductor Testing with OHM Meter

H.V. Inverter Main Parts List

Exploded View of Components

Parts List and Identification

Escutcheon Base Assembly Details

GD462M/GD452W Model Parts

Lists parts specific to the Escutcheon Base Assembly for GD462M and GD452W models.

GT462M Model Parts

Lists parts specific to the Escutcheon Base Assembly for the GT462M model.

Door Assembly Components

Wiring Materials List

Packing and Accessories

Digital Programmer Circuit Schematics

Schematic for GD462M/GD452W Models

Provides the detailed circuit diagram for the Digital Programmer Circuit of GD462M/GD452W.

Schematic for GT462M Model

Provides the detailed circuit diagram for the Digital Programmer Circuit of the GT462M model.