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Dometic DOTRC17B - User Manual

Dometic DOTRC17B
46 pages
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P/NO : 3828W5S6213
October, 2005
Printed in Korea
MICROWAVE OVEN
SERVICE MANUAL
MODEL: DOTRC17B
DOTRC17SS
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
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Dometic DOTRC17B Specifications

General IconGeneral
ColorBlack
TurntableYes
Voltage120V
Capacity1.7 cu ft
Wattage1000 Watts
Power Output1000 Watts
Turntable Diameter12.4 in

Summary

Service Safety Precautions

Microwave Energy Exposure Prevention

Guidelines to avoid exposure to excessive microwave energy during servicing operations.

Foreword and Manual Purpose

Manual Purpose and Warnings

Emphasizes careful reading of the manual to avoid microwave energy exposure.

Microwave Specifications

General Specifications

Details power consumption, output, frequency, power supply, and rated current.

Switch Chart

Illustrates switch modes and their corresponding interlock switch states.

General Cautions and Warnings

General Operating Cautions

Advises on safe handling, avoiding specific actions like using extension cords or touching live parts.

Microwave Radiation Safety

Warns about potential microwave energy exposure from the magnetron and waveguide.

Installation Guide

Installation Precautions

Instructions for proper unit placement, power connection, and environmental considerations.

Grounding Instructions

Explains the importance of grounding for electrical safety.

Operating the Microwave

Control Panel Overview

Identifies and illustrates the buttons and indicators on the control panel.

Control Panel Functionality

Detailed Button Descriptions

Explains the function of each touch pad on the control panel for various cooking modes.

Circuitry Diagrams

Overall Circuit Diagram

A schematic showing the interconnections of all major components in the microwave.

Schematic Diagram Details

Provides specific wiring color codes and component symbols used in the schematic.

Touch Key Board Circuit Matrix

Key Matrix Circuit Layout

Illustrates the matrix circuit for the touch keyboard, mapping keys to circuit connections.

General Service Guidelines

General Precautions in Use

Advises on safe operation, especially regarding empty operation and aluminum foil usage.

Trial Operation Procedure

Step-by-step guide to verify proper operation after installation or repair.

Key Features and Specifications

Highlights safety systems, power level selection, and multi-stage cooking capabilities.

Service Information and Precautions

Preliminary Service Cautions

Warns about high voltage circuits and the need for extreme care during repairs.

Microwave Leakage Precautions

Details essential safety measures to prevent microwave energy leakage before and during servicing.

Microwave Leakage Measurement

Required Equipment for Testing

Lists the necessary tools and meters for performing microwave leakage tests.

Microwave Energy Leakage Measurement

Outlines the procedure for measuring microwave radiation leakage using specific equipment.

Leakage and Power Measurement

Leakage Measurement Outside Case Removed

Specific instructions for measuring leakage after replacing components like the magnetron.

Leakage Measurement Fully Assembled Oven

Procedures for checking leakage on a fully assembled oven and cavity.

Power Output Measurement

Details the method for measuring the microwave oven's power output using a water load.

Component Disassembly Guide

Removing Power and Control Circuit Board

Step-by-step guide to safely remove the main control board assembly.

FPC Connector Handling Procedures

Removing the FPC Connector

Instructions on how to properly detach an FPC connector from its socket.

Inserting the FPC Connector

Guidance on correctly reattaching an FPC connector to its terminal socket.

External Component Removal

Removing the Outside Case

Detailed steps for removing the outer casing of the microwave oven.

Door Interlock Switch Service

Door Interlock Switch Replacement

Procedures for removing and replacing the door interlock switches.

Magnetron Removal and Installation

Magnetron Replacement Precautions

Steps and notes for carefully removing and reinstalling the magnetron, including gasket checks.

Internal Component Removal

Removing the Stirrer Fan

Instructions for accessing and removing the internal stirrer fan assembly.

Removing the Oven Door

Steps for detaching the main oven door from the unit.

Disassembling the Oven Door

Guide on how to take apart the oven door assembly.

Door and Ventilation System Service

Assembling the Oven Door

Procedures for correctly mounting the oven door assembly.

Removing the Ventilation Motor

Steps for detaching the ventilation motor from the oven.

Replacing the Humidity Sensor

Instructions for replacing the humidity sensor component.

Motor and Heater Removal

Removing the Turntable Motor

Steps to remove the turntable motor assembly.

Removing Convection Heater and Thermistor

Guide for removing the convection heater element and thermistor.

Interlock System and Adjustments

Interlock Mechanism Overview

Explains the function of the door lock mechanism for preventing microwave activity.

Interlock Adjustment Procedures

Steps for adjusting door latches and interlock switches for proper safety.

Door Latch and Switch Closing Check

How to inspect door latch gaps and switch alignment.

Adjusting Latch and Switch Closing

Procedures to adjust the latch board for correct switch operation.

Interlock System Testing Procedures

Testing Latch and Switch Sequence

Verifying the correct operational sequence of interlock switches when the door opens/closes.

Testing Microwave Energy Leakage

Final check for microwave leakage after interlock system adjustments.

Interlock Switch Continuity Tests

Primary Interlock Switch Test

How to test the continuity of the primary interlock switch using an ohmmeter.

Secondary Interlock Switch Test

How to test the continuity of the secondary interlock switch using an ohmmeter.

Monitor Switch Continuity Test

How to test the continuity of the interlock monitor switch using an ohmmeter.

Component Testing and Checkout

Component Resistance Testing

Procedures for measuring resistance of transformer and magnetron components.

Capacitor, Diode, and Relay Testing

Capacitor and Diode Testing

Methods for testing capacitor and diode continuity and resistance.

Relay and Fan Motor Testing

Procedures for testing relays and the circulation fan motor.

Motor, Thermistor, and Sensor Testing

Ventilation and Damper Motor Testing

Instructions for testing ventilation and damper motors.

Thermistor and Heater Element Testing

Procedures for testing thermistor resistance and convection heater element.

Sensor Testing

Steps for measuring the resistance of the sensor component.

Touch Key Board Testing

Key Connector Resistance Measurement

How to measure resistance between terminal pins of the key connector.

Fuse Blowing Checkout Procedures

Fuse Blowing Troubleshooting

Identifies problems and causes for fuse blowing and necessary actions.

Motor and Lamp Checkout Procedures

Fan and Oven Lamp Checkout

Troubleshooting steps for fan motor and oven lamp not turning on.

Circuit Board Checkout Procedures

Defective Circuit Board Symptoms

Lists symptoms indicating a potentially defective control circuit board.

General Troubleshooting Guide

Troubleshooting Guide

Addresses common problems like oven not working, low output power, and sparks.

Control Circuit Troubleshooting

Visual Indicators of Control Circuit Defects

Lists visual display conditions that suggest a defective control circuit.

Operation Failure Troubleshooting

Oven Not Operating or Input Issues

Diagnoses issues where the oven does not operate or accept input, including fuse problems.

Cooking Performance Troubleshooting

Cooking Start and Timer Issues

Addresses problems with the oven not starting cooking or timer functions.

Low Heat Production Troubleshooting

Diagnoses causes for low heat output during oven operation.

Microwave Oscillation Troubleshooting

No Microwave Oscillation Issues

Guides through diagnosing why there is no microwave oscillation despite other functions working.

Convection Function Troubleshooting

Convection Operation Problems

Addresses issues with the convection indicator, cooking cycle, and temperature regulation.

Exploded View: Door Assembly

Door Components for DOTRC17 B

Illustrates the parts that make up the door assembly for model DOTRC17B.

Door Components for DOTRC17 SS

Illustrates the parts that make up the door assembly for model DOTRC17SS.

Exploded View: Controller Assembly

Controller Components for DOTRC17 B

Shows the breakdown of the controller unit parts for model DOTRC17B.

Controller Components for DOTRC17 SS

Shows the breakdown of the controller unit parts for model DOTRC17SS.

Exploded View: Oven Cavity Assembly

Oven Cavity Component Breakdown

Illustrates the various parts that constitute the oven cavity assembly.

Exploded View: Latch Board Assembly

Latch Board Component Details

Shows the individual components that make up the latch board assembly.

Exploded View: Interior Parts (Part 1)

Interior Components (Part 1)

Diagrams of various internal components of the microwave oven.

Exploded View: Interior Parts (Part 2)

Interior Components (Part 2)

Diagrams of additional internal components of the microwave oven.

Exploded View: Installation Kit Components

Installation Kit Components

Illustrates the parts included in the installation kit and manuals.

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