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LG Electronics
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Kitchen Appliance
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Microwave Oven
LG Electronics
LMV1625B Interior Partsi, 33390G 34370T, WSZ002, 35889A, 33740A WTT021, 36549S
Models:
LMV1625W
LMV1625B
1
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45
45
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Troubleshooting
Specs
Install
Overall Circuit Diagram
Problems
Disassembly Instructions
Adjustment Procedures
Proper temperature measurement is not obtained
How to
Safety Precautions In This Manual
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33390G
34370T
INTERIOR PARTS(I)
WSZ002
35889A
33740A
WTT021
36549S
WSZ002
WTP013
56851D
54810C
50CZZH
56324A
WTT021
WTT028
56170D
533002
WSZ002
533001
8-5
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Contents
SERVICE MANUAL
SAFETY PRECAUTIONS IN THIS MANUAL
MICROWAVE OVEN
MODEL LMV1625B LMV1625W
DURING SERVICING TO AVOID POSSIBLE EXPOSURE
SAFETY PRECAUTIONS PRECAUTIONS TO BE OBSERVED BEFORE AND
TO EXCESSIVE MICROWAVE ENERGY
FOREWORD
TABLE OF CONTENTS
SPECIFICATIONS
1,500W maximum Microwave oven+Cook top lamp+Ventilation fan
CAUTIONS
MICROWAVE RADIATION
MAGNETRON
Gasket
PRECAUTIONS ON INSTALLATION
INSTALLATIONS
GROUNDING INSTRUCTIONS
OPERATING INSTRUCTIONS
CONTROL PANEL
CONTROL PANEL INSTRUCTIONS
OVERALL CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM
MATRIX CIRCUIT FOR TOUCH KEY BOARD
GENERAL INFORMATION FOR SERVICE
GENERAL PRECAUTIONS IN USE
FEATURES AND SPECIFICATIONS FEATURES
TRIAL OPERATION
SERVICE INFORMATION
PRECAUTIONS AND REPAIR SERVICE TIPS
MICROWAVE LEAKAGE TEST
EQUIPMENT
If the oven operates with the door open, the service personnel should
Tell the user not to operate the oven
NOTE WHEN MEASURING
POWER OUTPUT MEASUREMENT
MEASUREMENT WITH THE OUTER CASE REMOVED
MEASUREMENT WITH A FULLY ASSEMBLED OVEN
A. REMOVING POWER AND CONTROL CIRCUIT BOARD Figures 1, 2 and
DISASSEMBLY INSTRUCTIONS
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
G. DISASSEMBLING DOOR Figure
F. REMOVING 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
INTERLOCK SYSTEM
ADJUSTMENT PROCEDURES
CHECK THE DOOR LATCH AND SWITCH CLOSING
ADJUST THE LATCH AND SWITCH CLOSING
TEST THE LATCH AND SWITCH SEQUENCE
TEST THE MICROWAVE ENERGY LEAKAGE
INTERLOCK CONTINUITY TEST
A. PRIMARY INTERLOCK SWITCH TEST
B. SECONDARY INTERLOCK SWITCH TEST
C. MONITOR SWITCH TEST
TEST AND CHECKOUT PROCEDURES, AND TROUBLE SHOOTING
TEST PROCEDURES
COMPONENTS
RESULTS
TEST PROCEDURES
COMPONENTS
RESULTS
Figure 25-a
TEST PROCEDURES
COMPONENTS
RESULTS
Measure the resistance between terminal
1 CHECKOUT PROCEDURES FOR FUSE BLOWING
TEST PROCEDURES
wCAUTION The relay connector 2White
These two connectors are not Inter
2 CHECKOUT PROCEDURES FOR RELAY PROBLEM A
Remove the mate connector of I/O CON from the circuit board
Defective RELAY3 Replace RELAY3 PROBLEM B
GOOD
3 CHECKOUT PROCEDURES FOR CIRCUIT BOARD
The following symptoms indicate a defective circuit board
3 Proper temperature measurement is not obtained
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
DOOR PARTS
EXPLODED VIEW
13552A 13581A 13536A 13213A 13720D WTT021 14890A 14026A 14970A 13650A
268711 24781M 24810P WTP018 23572A WTT029
CONTROLLER PARTS
23506A
OVEN CAVITY PARTS
33530A
34930R 35026G 33052A 33550L 36912C WTT022 35230A
WTT021
LATCH BOARD PARTS
43500A
466001
WSZ084
INTERIOR PARTSI
33390G 34370T
WSZ002
35889A
INTERIOR PARTS
56912B
36549V
55231C 53550L 56804A
INSTALLATION PARTS
WSZ203
44360A WSZ098 WSZ133
WSZ204
SCHEMATIC
DIAGRAM
PRINTED CIRCUIT BOARD
P/NO. 3828W5S3242
Printed in Korea
