Panasonic NN-GT546W Service Manual

© 2006 Panasonic Home Appliances Microwave
Oven (Shanghai) Co., Ltd. All rights reserved.
Unauthorized copying and distribution is a violation
of law.
NN-GD576M
NN-GD576W
NN-GT546W
NN-ST556M
NN-ST556W
HPE(Hong Kong)
YPQ(Singapore)
MPQ(Malaysia)
TPE(Thailand, Indonesia)
YTE(Others)
KTE(UAE)
PTE(Iran)
KPQ(Kuwait, Doha, Qatar, Oman, Bahrain, Pakistan)
STM(Saudi Arabia)
Microwave Oven
Please file and use this manual together with the service manual for Model NN-S553/K593/K573/K543
(ORDER NO. SIMMC0306022C3).
ORDER NO.PHAMOS0607033A3

Panasonic NN-GT546W Specifications

General

Microwave Power	900 W
Grill Power	1000 W
Turntable Diameter	315 mm
Color	White
Cooking Modes	Microwave, Grill, Combination
Auto Cook Menu	Yes
Child Lock	Yes
Voltage	230 V
Frequency	50 Hz
Capacity	27 liters
Type	Grill Microwave Oven

Summary

General Service Warning

Technician Qualification and Safety

Emphasizes that the service manual is for experienced technicians and warns of potential injury or death.

Specific Cautions

Lead-Free Solder Handling

Advises on handling lead-free solder due to its higher melting point and potential for splashing.

Inverter Power Supply Dangers

High Voltage and Temperature Hazards

Details dangers of high voltage and temperature on the inverter board and its components.

Inverter Board Handling Precautions

Instructions on what not to do when working with the inverter board to prevent hazards.

Schematic Diagrams

STM Schematic Diagram

Circuit diagram for models using the STM system.

Schematic Diagram (Except STM)

Circuit diagram for models excluding the STM system.

Troubleshooting Cautions

Grounding Checks for Safety

Ensures proper grounding of the microwave oven before starting repair work.

Inverter High Voltage Warnings

Highlights dangers of high voltage and temperature in the inverter power supply.

Part Replacement Procedures

Procedure for replacing parts, emphasizing power cord removal.

10A Fuse Blow Troubleshooting

Troubleshooting steps when the 10A fuse blows due to short switch.

Foreign Object Insertion Warning

Warning against inserting objects into holes to prevent microwave leakage.

Measurements and Adjustments

Door Switch Adjustments

Procedure for adjusting door latch and short switches for proper operation.

Microwave Output Measurement

Simple method to test magnetron output power by measuring water temperature rise.

Exploded Views and Parts Lists

Exploded View of Components

Diagram showing the physical layout of microwave oven components for identification.

Main Parts List

List of all replaceable parts with part numbers, descriptions, and quantities.

Door Assembly Parts

Detailed diagram and parts list for the microwave oven door components.

Wiring Materials

List and identification of various wires and harnesses used in the appliance.

Packing and Accessories

List of packing materials and accessories included with the appliance.

Escutcheon Base Assembly Parts

Exploded view and parts list for the escutcheon base assembly.

H.V. Inverter Board Parts List

List of primary components for the High Voltage Inverter board.

Digital Programmer Circuit Schematics

NN-GD576M/GD576W Programmer Circuit

Schematic diagram for the digital programmer circuit of NN-GD576M and NN-GD576W models.

NN-GT546W Programmer Circuit

Schematic diagram for the digital programmer circuit of the NN-GT546W model.

NN-ST556M/ST556W Programmer Circuit

Schematic diagram for the digital programmer circuit of NN-ST556M and NN-ST556W models.

Model Specific Parts Lists

Parts List for NN-GD576M, GD576W

Comprehensive list of parts for NN-GD576M and GD576W models.

Parts List for NN-GT546W

Comprehensive list of parts for the NN-GT546W model.

Parts List for NN-ST556M, ST556W

Comprehensive list of parts for NN-ST556M and ST556W models.