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General| Brand | Panasonic |
|---|---|
| Model | NNGS595A |
| Category | Microwave Oven |
| Language | English |
Controls output power using PWM signals for variable cooking.
Explains the high-voltage inverter circuit supplying 4,000V DC to the magnetron.
Describes automatic cooking modes: steam defrost, auto cook (rice), and steam reheat.
How the digital programmer controls oven temperature via heaters and thermistors.
Details synchronous microwave and grill cooking cycles and power relay control.
Explains IR sensor function for food temperature detection and operational sequence.
Describes micro steam and steam reheat operation, including water supply.
Emphasizes proper grounding for safety during troubleshooting and operation.
Highlights dangers of high voltage, high current, and hot components in the inverter circuit.
General guidelines for replacing parts, including unplugging the power cord.
Procedure for replacing a 10A fuse blown by short switch operation.
Warning against inserting metal objects into oven holes to prevent microwave leakage.
Ensures proper assembly, tight connections, and checks for microwave leakage after repair.
Advises caution regarding sharp edges on unit parts during handling.
Step-by-step guide for safely removing and replacing the magnetron, including discharge.
Procedure for replacing the Digital Programmer Circuit (AU), membrane keyboard, and power relay.
Instructions for replacing the Digital Programmer Circuit (DU) and the low voltage transformer.
Steps to safely remove and replace the H.V. Inverter unit, including capacitor discharge.
Guide for disassembling and replacing the fan motor, including fan blade removal.
Procedure for removing and replacing the upper heater element.
Steps to disconnect and replace the IR sensor and its associated swing motor.
Instructions for removing and replacing the door assembly, including hinge pins and springs.
Detailed steps for removing and installing the water pump and its components.
Guide for removing and replacing the stir motor.
Procedure for removing and replacing the steam heater (DU).
Steps for removing and replacing the lower heater element.
Tests continuity of primary latch switch, door switch, and power relay B contacts.
Procedure to test the continuity of the short switch with door open/closed.
Checks for open filament or shorted magnetron by testing continuity.
Verifies continuity of switch terminals on the membrane keyboard.
Procedure for testing the H.V. Inverter power supply using AC line input current.
Checks resistance values of magnetron, steam heater, and oven thermistors.
Procedure to test the IR sensor functionality by observing its swing and temperature readings.
Instructions for mounting and adjusting door hook assembly for proper latch switch operation.
Method for measuring microwave output power using water heating and temperature rise.
Guides to activate self-diagnostic mode and interpret error codes (H**, U**).
Troubleshooting steps for oven stopping during cooking based on timing and causes.
Addresses issues like no display, no operation, fan motor issues, and loud buzzing noise.
Diagnosing problems related to the high-voltage inverter circuit and magnetron.
Troubleshooting steps for issues related to the Digital Programmer Circuit (DPC).
Simple troubleshooting steps using Ammeter for H.V. Inverter and magnetron issues.
Guide on using an OHM meter to check semiconductors in the circuit.
Diagram showing the assembly of the microwave oven with numbered parts.
Detailed list of all parts with part numbers, descriptions, quantities, and remarks.
List and diagram of parts for the water tank assembly.
List and diagram of components for the escutcheon base assembly.
List and diagram of parts comprising the door assembly.
List of wiring harnesses and cables used in the appliance.
Information regarding packing materials and included accessories.
Schematic diagram of the Digital Programmer Circuit (DPC) board.
List of components found on the Digital Programmer Circuit (DPC) board.
