Table Of Contents - LG LMHM2237BD Service Manual

Read this manual carefully. Failure to adhere to or observe the information in this manual may result in exposing
yourself to the microwave energy normally contained within the oven cavity.
Safety Precautions .............................................................................................................................................. 2
1. Specifications .................................................................................................................................................. 4
2. Cautions ........................................................................................................................................................... 5
3. Installation ....................................................................................................................................................... 6
4. Operation ......................................................................................................................................................... 7
4-1. Control Panel Features .............................................................................................................................. 7
4-2. Explanation of Control Panel...................................................................................................................... 8
5. Wiring Diagram / Key Matrix........................................................................................................................... 9
5-1. Wiring Diagram .......................................................................................................................................... 9
5-2. Key Matrix ............................................................................................................................................... 10
6. Troubleshooting ............................................................................................................................................ 11
6-1. General Information for Service ............................................................................................................... 11
6-2. Safety Caution.......................................................................................................................................... 12
6-3. Basic Check Summary............................................................................................................................. 13
6-4. Troubleshooting ....................................................................................................................................... 14
7. Microwave Leakage Test .............................................................................................................................. 24
8. Power Output Measurement......................................................................................................................... 26
9. Interlock System............................................................................................................................................ 27
9-1. Interlock Mechanism ................................................................................................................................ 27
9-2. Interlock Continuity Test........................................................................................................................... 29
10. Component Testing Information................................................................................................................ 30
11. Disassembly Instructions........................................................................................................................... 34
12. Exploded View ............................................................................................................................................. 41
FOREWORD
CONTENTS
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