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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 power to the microwave oven 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.
A microwave leakage check to verify compliance with the Federal performance standard should be
performed on each oven prior to release to the owner.
TABLE OF CONTENTS
1. SAFETY AND PRECAUTIONS -------------------------------------------------------------------- 2
2. SPECIFICATIONS -------------------------------------------------------------------------------------3
3. EXTERNAL VIEW -------------------------------------------------------------------------------------3
3-1. OUTER DIMENSION ---------------------------------------------------------------------------3
3-2. FEATURE DIAGRAM --------------------------------------------------------------------------4
4. INSTALLATION ---------------------------------------------------------------------------------------5
5. CONTROL PANEL -----------------------------------------------------------------------------6
6. DISASSEMBLY AND ASSEMBLY -----------------------------------------------------------------7
7. INTERLOCK MECHANISM AND ADJUSTMENT------------------------------------------------17
8. TROUBLE SHOOTING GUIDE ----------------------------------------------------------------18
9. MEASUREMENT AND TEST ------------------------------------------------------------------------- 23
9-1. MEASUREMENT OF THE MICROWAVE OUTPUT-----------------------------------23
9-2. MICROWAVE RADIATION TEST --------------------------------------------------------24
9-3. COMPONENT TEST PROCEDURE ------------------------------------------------------25
9-4. COMPONENT ACTION ---------------------------------------------------------------------26
10. WIRING DIAGRAM ---------------------------------------------------------------------------------27
11. EXPLODED VIEW AND PARTS LIST ---------------------------------------------------------28
11-1. DOOR ASSEMBLY------------------------------------------------------------------------------28
11-2. CONTROL PANEL ASSEMBLY--------------------------------------------------------------28
11-3. TOTAL ASSEMBLY-----------------------------------------------------------------------------28
12. PRINTED CIRCUIT BOARD --------------------------------------------------------------------------32
13. P.C.B. CIRCUIT DIAGRAM ------------------------------------------------------------------------------36