Dacor PMOR30S User Manual

PMOR30B
PMOR30R
PMOR30S
In the interest of user-safety the oven should be restored to its original condition and only parts identical to those specified should
be used.
WARNING TO SERVICE PERSONNEL: Microwave ovens contain circuitry capable of producing very high voltage
and current. Contact with the following parts may result in a severe, possibly fatal, electrical shock. (Inverter unit
that includes High Voltage Capacitor, High Voltage Power Transformer, High Voltage Rectifier and Heat sink etc.,
and Magnetron, High Voltage Harness etc..)
TABLE OF CONTENTS
Page
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO
AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY .................. INSIDE FRONT COVER
BEFORE SERVICING ..................................................................................................... INSIDE FRONT COVER
WARNING TO SERVICE PERSONNEL .............................................................................................................. 1
MICROWAVE MEASUREMENT PROCEDURE .................................................................................................. 2
FOREWORD AND WARNING ............................................................................................................................. 3
PRODUCT SPECIFICATIONS............................................................................................................................. 4
GENERAL INFORMATION ................................................................................................................................. 4
OPERATION ........................................................................................................................................................ 6
TROUBLESHOOTING GUIDE ........................................................................................................................... 14
TEST PROCEDURE .......................................................................................................................................... 16
TOUCH CONTROL PANEL ASSEMBLY ........................................................................................................... 27
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE............................................................... 33
PICTORIAL DIAGRAM....................................................................................................................................... 41
POWER UNIT CIRCUIT ..................................................................................................................................... 42
LSI UNIT CIRCUIT ............................................................................................................................................. 43
PRINTED WIRING BOARD ............................................................................................................................... 44
PARTS LIST....................................................................................................................................................... 45
PACKING AND ACCESSORIES........................................................................................................................ 50
S00M151PMOR3E
PMOR30B
PMOR30R
PMOR30S
OVER THE RANGE
MICROWAVE OVEN
MODELS
SERVICE MANUAL
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
distinctive appliances

Dacor PMOR30S Specifications

General

Brand	Dacor
Model	PMOR30S
Category	Microwave Oven
Language	English

Summary

PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY

BEFORE SERVICING

Actions to take before commencing any service work on the oven.

DANGER HIGH VOLTAGE

Critical warning about high voltage hazards within the microwave oven.

WARNING TO SERVICE PERSONNEL

Before Servicing

Steps to follow before starting any servicing procedures.

After repairing

Steps to follow after completing repairs and before final checks.

SERVICING FOR INVERTER UNIT

MICROWAVE MEASUREMENT PROCEDURE

Detailed procedure for measuring microwave radiation leakage from the oven.

FOREWORD

TROUBLESHOOTING GUIDE AND TEST PROCEDURE

Methods for diagnosing and resolving operational issues using tests.

TOUCH CONTROL PANEL

Information regarding the touch control panel and its functions.

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

Procedures for replacing and adjusting various oven components.

PRODUCT SPECIFICATION

Electrical Requirements

CONTROL PANEL

RELAY

SENSOR COOKING CONDITION

Details on how the sensor cooking function operates and its conditions.

BASIC OPERATION OF INVERTER CIRCUIT

DESCRIPTION AND FUNCTION OF COMPONENTS

DOOR INTERLOCK AND MONITOR SWITCHES

Details on the operation and function of door interlock and monitor switches.

TEMPERATURE FUSE (MG)

TROUBLESHOOTING GUIDE

TEST PROCEDURE

TEST PROCEDURES

MAGNETRON ASSEMBLY TEST

Procedure for testing the magnetron assembly for proper function.

INVERTER UNIT DEFECTIVE CHART

Flowchart to help identify defective parts within the inverter unit.

TRANSISTOR Q2 & Q3 TEST

SWITCHES TEST PROCEDURES

Testing procedures for interlock, stop, monitor switches, and monitor fuse.

THERMAL CUT-OUT AND FAN MOTOR TESTS

TOUCH CONTROL PANEL ASSEMBLY TEST

Testing and troubleshooting the touch control panel and its units.

KEY UNIT AND RELAY TESTS

COMPU DEFROST AND PWB TESTS

SENSOR AND WATER LOAD TESTS

CHECKING CONTROL UNIT

Steps to diagnose issues with the oven's control unit.

MICROWAVE OUTPUT POWER

Method for measuring the microwave output power using a water test.

POWER TRANSISTOR Q1 TEST

OVEN THERMAL CUT-OUT TEST

INVERTER UNIT TEST

Procedure for testing the inverter unit for defects.

HIGH VOLTAGE DIODE D11 & D12 TEST

MAGNETRON TEMPERATURE FUSE TEST

BRIDGE DIODE D1 TEST

TOUCH CONTROL PANEL ASSEMBLY

OVERVIEW AND KEY UNIT

CONTROL UNIT AND ITS COMPONENTS

DESCRIPTION OF LSI

ABSOLUTE HUMIDITY SENSOR CIRCUIT

DETECTOR CIRCUIT FUNCTION

SERVICING

ELECTRONIC COMPONENT HANDLING

Guidelines for safely handling sensitive electronic components like CMOS LSI.

TOUCH CONTROL PANEL SERVICING

Procedures and precautions for servicing the touch control panel.

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

HIGH VOLTAGE AND WIRING WARNINGS

Critical warnings regarding high voltage hazards and wiring precautions.

SERVICE WITHOUT OVEN REMOVAL

REMOVAL OF OVEN FROM WALL

OUTER CASE REMOVAL

INVERTER UNIT REMOVAL

Procedure for removing the inverter unit from the oven.

HOW TO REMOVE TRANSISTOR Q1

MOTOR, DUCT, AND LAMP SOCKET REMOVAL

MAGNETRON REMOVAL

Procedure for removing the magnetron assembly.

OVEN THERMAL CUT-OUT REMOVAL

HOOD FAN THERMAL CUT-OUT REMOVAL

MAGNETRON TEMPERATURE FUSE REMOVAL

TURNTABLE MOTOR REMOVAL

CONTROL PANEL ASSEMBLY REMOVAL

Procedures for removing the control panel assembly.

DOOR REPLACEMENT