Daewoo KOG-261M, Service Manual

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1
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 door open.
(b) Make the following safety checks on all ovens to be serviced before activating the mag-
netron 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, (5) evidence of dropping or abuse.
(c) Before turning on microwave power for any service test or inspection within the microwave
gernerating compartments, check the magnetron, wave guide or transmission line, and cav-
ity for proper alignment, intergrity, and connections.
(d) Any defective or misadjusted components in the interlock, monitor, door seal, and
microwave gerneration and transmission systems shall be repaired, or adjusted by proce-
dures described in this manual before the oven is released to the owner.
(e) A micrewave leakage check to verify compliance with the federal performance standard
should be performed on each oven prior to release to the owner.
PROPER USE AND SERVICE PRECAUTIONS ................................................................................. 2
SPECIFICATIONS ................................................................................................................................ 3
FEATURES DIAGRAM ......................................................................................................................... 4
EARTHING INSTRUCTIONS ............................................................................................................... 5
INSTALLATION..................................................................................................................................... 5
OPERATION PROCEDURE................................................................................................................. 6
CONTROLS .......................................................................................................................................... 7
INTERLOCK MECHINISM FUNCTIONS AND ADJUSTMENTS ........................................................ 18
SAFETY PRECAUTIONS FOR DISASSEMBLY AND REPAIR.......................................................... 20
DISASSEMBLY AND ASSEMBLY ....................................................................................................... 21
TROUBLE SHOOTING GUIDE ............................................................................................................ 27
MEASUREMENT OF THE MICROWAVE OUTPUT POWER ............................................................ 34
MICROWAVE RADIATION TEST ........................................................................................................ 34
WIRING DIAGRAM ............................................................................................................................... 36
CIRCUIT DESCRIPTION...................................................................................................................... 37
COMPONENT TEST PROCEDURE .................................................................................................... 40
SAFETY INTERLOCK CONTINUITY TEST......................................................................................... 41
PRINTED CIRCUIT BOARD................................................................................................................. 42
CIRCUIT CHECK PROCEDURE...................................................................................................... 42
COMPONENT INFORMATION ........................................................................................................ 47
PRINTED CIRCUITS BOARD .......................................................................................................... 48
P.C.B. CIRCUIT DIAGRAM .............................................................................................................. 49
P.C.B. LOCATION NO ...................................................................................................................... 50
EXPLODED AND PARTS LIST ............................................................................................................ 51
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