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Microwave Oven
LG Electronics
LMV1825SB, LMV1825SBQ, MV1825SW service manual
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46 pages, 1.69 Mb
MICROWAVE OVEN
SERVICE MANUAL
MODEL: LMV1825SB
BEFORE SERVICING THE UNIT, READ THE
SAFETY PRECAUTIONS
IN THIS MANUAL.
LMV1825SW
LMV1825SBQ
CAUTION
website http://www.lgservice.com
Contents
Main
CAUTION
FOREWORD
TABLE OF CONTENTS
SPECIFICATIONS
CAUTIONS
MAGNETRON
THE OVEN IS TO BE SERVICED ONLY BY PROPERLY QUALIFIED SERVICE PERSONNEL.
MICROWAVE RADIATION
INSTALLATION
PRECAUTIONS ON INSTALLATION
GROUNDING INSTRUCTIONS
BEFORE YOU BEGIN, READ THE FOLLOWING INSTRUCTIONS COMPLETELY AND CAREFULLY.
WARNING
OPERATING INSTRUCTIONS
CONTROL PANEL INSTRUCTIONS
4-2
WARNING:
Page
MATRIX CIRCUIT FOR TOUCH KEY BOARD
GENERAL INFORMATION FOR SERVICE
GENERAL PRECAUTIONS IN USE
TRIAL OPERATION
FEATURES AND SPECIFICATIONS FEATURES
SERVICE INFORMATION
PRECAUTIONS AND REPAIR SERVICE TIPS
PRELIMINARY
MICROWAVE LEAKAGE TEST
CAUTIONS
EQUIPMENT
MEASURING MICROWAVE ENERGY LEAKAGE
MEASUREMENT WITH THE OUTER CASE REMOVED
POWER OUTPUT MEASUREMENT
MEASUREMENT WITH A FULLY ASSEMBLED OVEN
P =
NOTE WHEN MEASURING
RECORD KEEPING AND NOTIFICATION AFTER MEASUREMENT
DISASSEMBLY INSTRUCTIONS
Figure 1
HOW TO REMOVE THE F.P.C. CONNECTOR
HOW TO INSERT THE F.P.C. CONNECTOR
B. REMOVING THE OUT CASE(Figure 8)
WIRE COLOR
7-7
Latch Board Secondary Interlock Switch
Figure 9
C REMOVING THE DOOR INTERLOCK SWITCHES (Figures 9,10)
Figure 10
D. REMOVING MAGNETRON
E. REMOVING STIRRER FAN
F. REMOVING DOOR (Figure 16)
G. DISASSEMBLING DOOR (Figure 17)
H. ASSEMBLING DOOR
I. REMOVING THE VENTILATION MOTOR
J. REPLACING THE HUMIDITY SENSOR
K. REMOVING THE TURNTABLE MOTOR
Wire Leads Turntable Motor
INTERLOCK SYSTEM
INTERLOCK MECHANISM
Page
INTERLOCK CONTINUITY TEST
A. PRIMARY INTERLOCK SWITCH TEST
B. SECONDARY INTERLOCK SWITCH TEST
C. MONITOR SWITCH TEST
COMPONENTS TEST PROCEDURE RESULTS
TEST AND CHECKOUT PROCEDURES, AND TROUBLE SHOOTING
- CAUTIONS -
A. TEST PROCEDURES
Page
1 2 3
BK RD WH
7-17
COMPONENTS TEST PROCEDURES RESULTS
Figure 29
TOUCH KEY BOARD
SENSOR (For sensor model only)
B. CHECKOUT PROCEDURES
Page
Page
7-21
7-22
7-23
7-24
7-25
1
EXPLODED VIEW
DOOR
Page
8-3
OVEN CAVITY
Page
8-5
INTERIOR (I)
8-6
INTERIOR (II)
8-7
INSTALLATION
8-14
SCHEMATIC DIAGRAM OF P.C.B