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LMV1625W, LMV1625B service manual Overall Circuit Diagram, Schematic Diagram
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 9
Image 9
OVERALL CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM
5-1
Page 8
Page 10
Page 9
Image 9
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Contents
SAFETY PRECAUTIONS IN THIS MANUAL
SERVICE MANUAL
MICROWAVE OVEN
MODEL LMV1625B LMV1625W
SAFETY PRECAUTIONS PRECAUTIONS TO BE OBSERVED BEFORE AND
DURING SERVICING TO AVOID POSSIBLE EXPOSURE
TO EXCESSIVE MICROWAVE ENERGY
TABLE OF CONTENTS
FOREWORD
1,500W maximum Microwave oven+Cook top lamp+Ventilation fan
SPECIFICATIONS
MICROWAVE RADIATION
CAUTIONS
MAGNETRON
Gasket
INSTALLATIONS
PRECAUTIONS ON INSTALLATION
GROUNDING INSTRUCTIONS
CONTROL PANEL
OPERATING INSTRUCTIONS
CONTROL PANEL INSTRUCTIONS
SCHEMATIC DIAGRAM
OVERALL CIRCUIT DIAGRAM
MATRIX CIRCUIT FOR TOUCH KEY BOARD
GENERAL PRECAUTIONS IN USE
GENERAL INFORMATION FOR SERVICE
FEATURES AND SPECIFICATIONS FEATURES
TRIAL OPERATION
PRECAUTIONS AND REPAIR SERVICE TIPS
SERVICE INFORMATION
EQUIPMENT
MICROWAVE LEAKAGE TEST
If the oven operates with the door open, the service personnel should
Tell the user not to operate the oven
POWER OUTPUT MEASUREMENT
NOTE WHEN MEASURING
MEASUREMENT WITH THE OUTER CASE REMOVED
MEASUREMENT WITH A FULLY ASSEMBLED OVEN
DISASSEMBLY INSTRUCTIONS
A. REMOVING POWER AND CONTROL CIRCUIT BOARD Figures 1, 2 and
IMPORTANT NOTES
HOW TO INSERT THE F.P.C. CONNECTOR
HOW TO REMOVE 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
I. REMOVING THE VENTILATION FANASSY
H. ASSEMBLING DOOR
K. REMOVING THE TURNTABLE MOTOR
ADJUSTMENT PROCEDURES
INTERLOCK SYSTEM
CHECK THE DOOR LATCH AND SWITCH CLOSING
ADJUST THE LATCH AND SWITCH CLOSING
TEST THE MICROWAVE ENERGY LEAKAGE
TEST THE LATCH AND SWITCH SEQUENCE
A. PRIMARY INTERLOCK SWITCH TEST
INTERLOCK CONTINUITY TEST
B. SECONDARY INTERLOCK SWITCH TEST
C. MONITOR SWITCH TEST
TEST PROCEDURES
TEST AND CHECKOUT PROCEDURES, AND TROUBLE SHOOTING
COMPONENTS
RESULTS
COMPONENTS
TEST PROCEDURES
RESULTS
Figure 25-a
COMPONENTS
TEST PROCEDURES
RESULTS
Measure the resistance between terminal
TEST PROCEDURES
1 CHECKOUT PROCEDURES FOR FUSE BLOWING
wCAUTION The relay connector 2White
These two connectors are not Inter
Remove the mate connector of I/O CON from the circuit board
2 CHECKOUT PROCEDURES FOR RELAY PROBLEM A
Defective RELAY3 Replace RELAY3 PROBLEM B
GOOD
The following symptoms indicate a defective circuit board
3 CHECKOUT PROCEDURES FOR 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
EXPLODED VIEW
DOOR PARTS
13552A 13581A 13536A 13213A 13720D WTT021 14890A 14026A 14970A 13650A
CONTROLLER PARTS
268711 24781M 24810P WTP018 23572A WTT029
23506A
33530A
OVEN CAVITY PARTS
34930R 35026G 33052A 33550L 36912C WTT022 35230A
WTT021
43500A
LATCH BOARD PARTS
466001
WSZ084
33390G 34370T
INTERIOR PARTSI
WSZ002
35889A
56912B
INTERIOR PARTS
36549V
55231C 53550L 56804A
WSZ203
INSTALLATION PARTS
44360A WSZ098 WSZ133
WSZ204
DIAGRAM
SCHEMATIC
PRINTED CIRCUIT BOARD
Printed in Korea
P/NO. 3828W5S3242