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iii
Original 03/97
Page iii
Microwave Oven Hood Combo Service Manual — LIT 4317216
TABLE OF CONTENTS
Page
Important Safety Information .............................................................................................................. v
Theory Of Operation .........................................................................................................................1-1
Component Access ...........................................................................................................................2-1
Component Sections ...................................................................................................................2-1
General ...............................................................................................................................................
2-2
Removing The Microwave Oven & Cabinet .............................................................................2-2
The Protection Control System .......................................................................................................
2-4
Removing The Oven Door ..........................................................................................................2-4
Removing The Door Choke ........................................................................................................2-5
Removing The Control Panel.....................................................................................................2-6
Removing The Line Fuse ...........................................................................................................2-7
Removing/Adjusting The Interlock Switches ...........................................................................2-8
Removing The Base Thermal Fuse ....................................................................................... 2-11
Removing The Magnetron Thermal Fuse.............................................................................. 2-12
Removing The Cavity Thermal Fuse ..................................................................................... 2-13
Removing The Convection Thermistor .................................................................................. 2-14
The Operating Control System .....................................................................................................
2-16
Removing The Oven Light Socket ......................................................................................... 2-16
Removing The Control Circuit Board..................................................................................... 2-17
Removing The Temperature Probe Socket .......................................................................... 2-18
Removing The Fan Motor ........................................................................................................ 2-19
Removing The Power Cord ..................................................................................................... 2-20
Removing The Blower Motor Capacitor ................................................................................ 2-21
Removing The Convection Heating Element........................................................................ 2-22
Removing The Gas Sensor ..................................................................................................... 2-24
Removing The Synchronous Motor........................................................................................ 2-25
Removing A Cooktop Light Socket ........................................................................................ 2-26
The High Voltage Components ....................................................................................................
2-27
Accessing The High Voltage Components ........................................................................... 2-28
Removing The Magnetron ....................................................................................................... 2-29
Removing The High Voltage Rectifier And The High Voltage Capacitor ......................... 2-30
Removing The High Voltage Transformer ............................................................................ 2-32