Table Of Contents - Whirlpool MH9180XL Service Manual

GENERAL ............................................................................................................................... 1-1
Important Safety Information ............................................................................................. 1-1
Warning To Service Technicians ....................................................................................... 1-4
Precautions To Be Observed Before And During Servicing
To Avoid Possible Exposure To Excessive Microwave Energy ..................................... 1-5
R.F. Leakage Test ............................................................................................................. 1-6
Precautions To Be Observed When Troubleshooting ....................................................... 1-7
Model & Serial Number Designations ................................................................................ 1-8
Model & Serial Number Label And Tech Sheet Locations................................................. 1-9
Specifications ................................................................................................................... 1-10
Whirlpool Microwave Oven Warranty .............................................................................. 1-12
INSTALLATION INFORMATION ........................................................................................... 2-1
Microwave Height & Weight Variations .............................................................................. 2-1
Adjusting The Exhaust Airflow ........................................................................................... 2-2
Removing & Reinstalling The Microwave Oven................................................................. 2-3
THEORY OF OPERATION ..................................................................................................... 3-1
Microwave Operation ......................................................................................................... 3-1
COMPONENT ACCESS ......................................................................................................... 4-1
Component Locations ........................................................................................................ 4-1
Removing The Cabinet ...................................................................................................... 4-2
Removing The Bottom Cover & Hood Lamp Socket ......................................................... 4-3
Removing Cavity Thermostat 1 & The Humidity Sensor ................................................... 4-4
Removing The Stirrer Motor .............................................................................................. 4-6
Removing Cavity Thermostats 2 & 3 ................................................................................. 4-8
Removing The Hood Exhaust Fan Motor ........................................................................ 4-10
Removing The Cavity Lamp & Socket ............................................................................. 4-11
Removing The Control Panel Assembly, The Power Supply
& Display Boards, And The Keyboard .......................................................................... 4-12
Removing An Inline Fuse ................................................................................................. 4-14
Removing The AC Line Filter Capacitor .......................................................................... 4-15
Removing The Cooling Fan Motor, The Exhaust Fan Thermostat,
And The Line Fuseholder ............................................................................................. 4-16
Removing The Exhaust Motor Start Capacitor, The Magnetron
Thermostat, & The 40 W Inverter Board ....................................................................... 4-18
Removing The 1100 W Inverter Board ............................................................................ 4-20
Removing The Magnetron ............................................................................................... 4-22
Removing The Primary & Secondary Interlock Switches,
And The Monitor Switch ................................................................................................ 4-24
Removing The Turntable Motor ....................................................................................... 4-26
Removing The Oven Door And The Inner Panel ............................................................. 4-27

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