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MS3447GRS service manual
Models:
MS3447GR
MS3447GRS
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Troubleshooting
Specification
Install
Schematic Diagram
NOTE Make sure the wire leads correct position
Disassembly And Adjustment
Test Procedure
How to
Before Servicing The Unit, Read The Safety Precautions In This Manual
Service Information
Page 33
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Page 32
Contents
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL
Website http//biz.lgservice.com
July
P/NO MFL31039007
MICROWAVE RADIATION
SAFETY PRECAUTIONS
Only for training and service purposes
CONTENTS
SERVICE INFORMATION
LGE Internal Use Only
DESCRIPTION
SPECIFICATIONS
MODEL
MS3447GR / MS3447GRS
NEVER operate the oven with no load
CAUTIONS
NEVER injure the door seal and front plate of the oven cavity
NEVER put iron tools on the magnetron
INSTALLING
INSTALLATION
EARTHING INSTRUCTIONS
10cm
OPERATING INSTRUCTIONS
FEATURES
CONTROL PANEL
1. SENSOR REHEAT 2. SENSOR COOK
OPERATING SEQUENCE
1. CANCEL FUNCTION
2. AUTO TOUCH
6. CHILD LOCK
Only for training and service purposes
SCHEMATIC DIAGRAM
LGE Internal Use Only
Copyright 2007 LG Electronics. Inc. All right reserved
WHEN TOUCHING THE START PAD
WHEN SELECTING COOKING POWER LEVEL AND TIME
WHEN THE OVEN IS SET AT ANY LEVEL EXCEPT MAXIMUM
WHEN THE DOOR IS OPENED DURING COOKING
If the oven operates with the door open, the service personnel should
SERVICE INFORMATION
TOOLS AND MEASURING INSTRUMENTS
MICROWAVE LEAKAGE TEST
MEASUREMENT WITH OUTER CASE REMOVED
NOTES WHEN MEASURING
MEASUREMENT WITH A FULLY ASSEMBLED OVEN
WARNING AVOID CONTACTING ANY HIGH VOLTAGE PARTS
DISASSEMBLY AND ADJUSTMENT
MEASUREMENT OF MICROWAVE POWER OUTPUT
B. POWER SUPPLY CORD
C. CONTROL PANEL ASSEMBLY
D. PCB ASSEMBLY REMOVAL
E. DOOR MAIN ASSEMBLY REMOVAL
CAUTION Be careful not to damage door seal plate by screwdriver
F. AIR DUCT ASSEMBLY REMOVAL
G. MAGNETRON REMOVAL
H. REMOVING THE TURNTABLE MOTOR
I. HIGH VOLTAGE TRANSFORMER REMOVAL
J. FAN MOTOR ASSEMBLY REMOVAL
K. HIGH VOLTAGE CAPACITOR AND DIODE REMOVAL
L. INTERLOCK SYSTEM
B. SECONDARY INTERLOCK SWITCH TEST
A. PRIMARY INTERLOCK SWITCH TEST
C. MONITOR SWITCH TEST
TEST PROCEDURE
TEST PROCEDURE
COMPONENT TEST PROCEDURE
CAUTIONS
COMPONENTS
TEST PROCEDURE
COMPONENTS
RESULTS
Relay
5-10
TEST PROCEDURE
COMPONENTS
CONDITION
TROUBLE SHOOTING
CAUSE
REMEDY
RESULT
CHECK
5-12
CONDITION
5-13
RESULT
CONDITION
CHECK
CHECK
CONDITION
CAUSE
REMEDY
5-15
NOTE Make sure the wire leads correct position
CONDITION
CHECK
INTRODUCTION
EXPLODED VIEW
OVEN CAVITY PARTS
INTERIOR PARTS
15006A 13581A 13552A 13536A 13213A 14890A 13720D 14026A 14970A
DOOR PARTS
24781M 23572A 23790D 268711 WTP018 23506A 24510L 24970A
CONTROL PANEL PARTS
33112U
OVEN CAVITY PARTS
33052A WTT010 33390G
36549S WTP013
WSZ085 466001 43501A 43500A
LARCH BOARD PARTS
WTT021 WTP004 56501A 54974T
INTERIOR PARTS
56901A
56549F
56170D 63302A 63303A 948502 65006B WSZ002 WTT021
BASE PLATE PARTS
