LMHM2017S
50 pagine · 9.12 MB · PDF
Internal Use Only
Website: http://biz.lgservice.com
MICROWAVE OVEN SERVICE MANUAL
MODEL: LMHM2017SW LMHM2017SB
LMHM2017ST
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
February, 2010 Printed in China
CAUTION WARNING TO SERVICE TECHNICIANS
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY
- a. Do not operate or allow the oven to be operated with the door open.
- b. Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source, and make repairs as necessary; (1) Interlock operation, (2) proper door closing, (3) seal and sealing surfaces (arcing, wear, and other damage), (4) damage to or loosening of hinges and latches, (5) evidence of dropping or abuse.
- c. Before turning on microwave power for any service test or inspection within the microwave generating compartments, check the magnetron, wave guide or transmission line, and cavity for proper alignment, integrity, and connections.
- d. Any defective or misadjusted components in the interlock, monitor, door seal, and microwave generation and transmission systems shall be repaired, replaced, or adjusted by procedures described in this manual before the oven is released to the owner.
- e. A Microwave leakage check to verify compliance with the Federal performance standard should be performed on each oven prior to release to the owner.
- ¥ Proper operation of the microwave ovens requires that the magnetron be assembled to the wave guide and cavity.Never operate the magnetron unless it is properly installed.
- ¥ Be sure that the magnetron gasket is properly installed around the dome of the tube whenever installing the magnetron.
- ¥ Routine service safety procedures should be exercised at all times.
- ¥ Untrained personnel should not attempt service without a thorough review of the test procedures and safety information contained in this manual.
FOREWORD
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.
CONTENTS
| (Page) | |
|---|---|
| Safety Precautions.............................................................................................................................................. | 2 |
| 1. Specification.................................................................................................................................................... | 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 .............................................................................................................................. | 25 |
| 8. Power Output Measurement......................................................................................................................... | 27 |
| 9. Interlock System............................................................................................................................................ | 28 |
| 9-1. Interlock Mechanism ................................................................................................................................ | 28 |
| 9-2. Interlock Continuity Test........................................................................................................................... | 30 |
| 10. Component Testing Information................................................................................................................ | 31 |
| 11. Disassembly Instructions........................................................................................................................... | 35 |
| 12. Exploded View............................................................................................................................................. | 43 |
**Table Caption: This table of contents outlines a service manual for a microwave oven, detailing sections on safety, specifications, installation, operation, wiring,
