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Microwave Oven
LG Electronics
LMV1625B Installation Parts, WSZ203, 44360A WSZ098 WSZ133, WSZ204, WWZ068
Models:
LMV1625W
LMV1625B
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Troubleshooting
Specification
Install
Overall Circuit Diagram
Problems
Disassembly Instructions
Adjustment Procedures
Proper temperature measurement is not obtained
How to
Safety Precautions In This Manual
Page 42
Image 42
WSZ203
63861A
INSTALLATION PARTS
44360A
WSZ098
WSZ133
WSZ204
WWZ068
WWZ068
63300M
65862D
WSZ136
65862B
8-7
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Image 42
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Contents
MICROWAVE OVEN
SERVICE MANUAL
SAFETY PRECAUTIONS IN THIS MANUAL
MODEL LMV1625B LMV1625W
SAFETY PRECAUTIONS PRECAUTIONS TO BE OBSERVED BEFORE AND
DURING SERVICING TO AVOID POSSIBLE EXPOSURE
TO EXCESSIVE MICROWAVE ENERGY
FOREWORD
TABLE OF CONTENTS
SPECIFICATIONS
1,500W maximum Microwave oven+Cook top lamp+Ventilation fan
MAGNETRON
CAUTIONS
MICROWAVE RADIATION
Gasket
INSTALLATIONS
PRECAUTIONS ON INSTALLATION
GROUNDING INSTRUCTIONS
OPERATING INSTRUCTIONS
CONTROL PANEL
CONTROL PANEL INSTRUCTIONS
OVERALL CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM
MATRIX CIRCUIT FOR TOUCH KEY BOARD
FEATURES AND SPECIFICATIONS FEATURES
GENERAL INFORMATION FOR SERVICE
GENERAL PRECAUTIONS IN USE
TRIAL OPERATION
SERVICE INFORMATION
PRECAUTIONS AND REPAIR SERVICE TIPS
If the oven operates with the door open, the service personnel should
MICROWAVE LEAKAGE TEST
EQUIPMENT
Tell the user not to operate the oven
MEASUREMENT WITH THE OUTER CASE REMOVED
NOTE WHEN MEASURING
POWER OUTPUT MEASUREMENT
MEASUREMENT WITH A FULLY ASSEMBLED OVEN
DISASSEMBLY INSTRUCTIONS
A. REMOVING POWER AND CONTROL CIRCUIT BOARD Figures 1, 2 and
IMPORTANT NOTES
HOW TO REMOVE THE F.P.C. CONNECTOR
HOW TO INSERT THE F.P.C. CONNECTOR
B. REMOVING THE OUT CASEFigure
C REMOVING THE DOOR INTERLOCK SWITCHES Figures 9,10
D. REMOVING MAGNETRON
F. REMOVING DOOR Figure
G. DISASSEMBLING DOOR Figure
CAUTION Be careful not to damage door seal plate with the screwdriver
H. ASSEMBLING DOOR
I. REMOVING THE VENTILATION FANASSY
K. REMOVING THE TURNTABLE MOTOR
CHECK THE DOOR LATCH AND SWITCH CLOSING
INTERLOCK SYSTEM
ADJUSTMENT PROCEDURES
ADJUST THE LATCH AND SWITCH CLOSING
TEST THE LATCH AND SWITCH SEQUENCE
TEST THE MICROWAVE ENERGY LEAKAGE
B. SECONDARY INTERLOCK SWITCH TEST
INTERLOCK CONTINUITY TEST
A. PRIMARY INTERLOCK SWITCH TEST
C. MONITOR SWITCH TEST
COMPONENTS
TEST AND CHECKOUT PROCEDURES, AND TROUBLE SHOOTING
TEST PROCEDURES
RESULTS
RESULTS
TEST PROCEDURES
COMPONENTS
Figure 25-a
RESULTS
TEST PROCEDURES
COMPONENTS
Measure the resistance between terminal
wCAUTION The relay connector 2White
1 CHECKOUT PROCEDURES FOR FUSE BLOWING
TEST PROCEDURES
These two connectors are not Inter
Defective RELAY3 Replace RELAY3 PROBLEM B
2 CHECKOUT PROCEDURES FOR RELAY PROBLEM A
Remove the mate connector of I/O CON from the circuit board
GOOD
3 Proper temperature measurement is not obtained
3 CHECKOUT PROCEDURES FOR CIRCUIT BOARD
The following symptoms indicate a defective circuit board
8 Some of the indicators do no flicker light up
Runs
PROBLEM - C Unit does not heat up even if display counts down when
PROBLEM - D No buzzing when touching the key, between
Check 1. POWER SUPPLY
EXPLODED VIEW
DOOR PARTS
13552A 13581A 13536A 13213A 13720D WTT021 14890A 14026A 14970A 13650A
CONTROLLER PARTS
268711 24781M 24810P WTP018 23572A WTT029
23506A
34930R 35026G 33052A 33550L 36912C WTT022 35230A
OVEN CAVITY PARTS
33530A
WTT021
466001
LATCH BOARD PARTS
43500A
WSZ084
WSZ002
INTERIOR PARTSI
33390G 34370T
35889A
36549V
INTERIOR PARTS
56912B
55231C 53550L 56804A
44360A WSZ098 WSZ133
INSTALLATION PARTS
WSZ203
WSZ204
SCHEMATIC
DIAGRAM
PRINTED CIRCUIT BOARD
P/NO. 3828W5S3242
Printed in Korea