Samsung M745 User Manual

MICROWAVE OVEN
M745
SERVICE
Manual
MICROWAVE OVEN CONTENTS
M745
Auto
10s.
h
10min
min
1min
0.1 kg
1min+
1. Precaution
2. Specifications
3. Operating Instructions
4. Disassembly and Reassembly
5. Alignment and Adjustments
6. Troubleshooting
7. Exploded Views and Parts List
8. PCB Diagrams
9. Schematic Diagrams
TAWIL

Samsung M745 Specifications

General

Brand	Samsung
Model	M745
Category	Microwave Oven
Language	English

Summary

General Safety Precautions for Servicing

1. Precaution

1-1 Safety Precautions

General safety measures to be followed during servicing operations.

1-2 Special Servicing Precautions

Specific safety guidelines for servicing microwave ovens.

1-3 Special High Voltage Precautions

Critical warnings and procedures for handling high voltage components.

2. Specifications

2-1 Table of Specifications

Detailed technical specifications of the microwave oven.

2-2 Comparison Chart

Feature comparison for the M745 model.

3. Operating Instructions

3-1 Control Panel

Overview of the microwave oven's control panel layout and buttons.

3-2 Features & External Views

Visual representation of the oven's exterior features and dimensions.

4. Disassembly and Reassembly

4-1 Replacement of Magnetron, Motor Assembly and Lamp

Step-by-step guide for replacing key internal components.

4-2 Replacement of High Voltage Transformer

Procedures for safely removing and replacing the high voltage transformer.

4-3 Replacement of Door Assembly

Instructions for disassembling and reassembling the oven door.

4-4 Replacement of Fuse

Steps for safely replacing the main fuse.

4-5 Replacement of Drive Motor

Procedure for replacing the turntable drive motor.

4-6 Replacement of Control Circuit Board

Guide for removing and replacing the main control circuit board.

5. Alignment and Adjustments

5-1 High Voltage Transformer

Procedures for checking and adjusting the high voltage transformer.

5-2 Low Voltage Transformer

Steps to check the continuity of the low voltage transformer.

5-3 Magnetron

Methods for testing the magnetron for continuity and shorts.

5-4 High Voltage Capacitor

Testing procedures for the high voltage capacitor.

5-5 High Voltage Diode

Guidelines for testing the high voltage diode's resistance.

5-6 Main Relay and Power Control Relay

Procedures for checking the continuity of main and power control relays.

5-7 Adjustment of Primary Switch, Door Sensing Switch and Monitor Switch

Instructions for adjusting safety interlock and door switches.

5-8 Output Power of Magnetron

Method for measuring magnetron output power using a water test.

5-9 Microwave Heat Distribution - Heat Evenness

Procedure to check heat distribution evenness within the oven.

5-10 Procedure for Measurement of Microwave Energy Leakage

Detailed steps for measuring microwave leakage using a survey meter.

5-11 Check for Microwave Leakage

Method for verifying microwave leakage levels.

5-12 Note on Measurement

Important considerations for accurate microwave leakage measurements.

5-13 Leakage Measuring Procedure

Procedures for recording and notifying leakage measurement results.

6. Troubleshooting

6-1 Electrical Malfunction

Common electrical issues, their causes, and corrective actions for the microwave oven.

7. Exploded Views and Parts List

7-1 Exploded Views

Visual diagrams showing the assembly of microwave oven parts.

7-2 Main Parts List

Comprehensive list of main components with part numbers and specifications.

7-3 Door Parts List

Detailed list of parts specific to the microwave oven door assembly.

7-4 Control Parts List

List of components for the control panel and related parts.

7-5 Standard Parts List

List of common and standard parts used in the appliance.

8. P.C.B Diagrams

8-1 P.C.B Diagrams

Diagrams illustrating the Printed Circuit Board layouts.

8-2 P.C.B Parts List

List of components found on the Printed Circuit Boards.

9. Schematic Diagrams

9-1 Schematic Diagrams

Electrical schematic diagrams for the microwave oven.