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Service Manual
Microwave Oven
Model :KOG-36052S
KOG-36152S
KOG-36252S
KOG-36352S
KOG-36452S




DAEWOO ELECTRONICS CO., LTD.
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 connection.
(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.




TABLE OF CONTENTS
PROPER USE AND SERVICE PRECAUTIONS 3
SPECIFICATIONS 4
FEATURES DIAGRAM 5
INSTALLATION 6
OPERATION 7
MEASUREMENT OF THE MICROWAVE OUTPUT POWER 8
MICROWAVE RADIATION TEST 9
WIRING DIAGRAM 10
CIRCUIT DESCRIPTION 12
PRECAUTIONS FOR DISASSEMBLY AND REPAIR 14
DISASSEMBLY AND ASSEMBLY 15
INTERLOCK MECHANISM 21
TROUBLE SHOOTING GUIDE 23
COMPONENT TEST PROCEDURE 25
SAFETY INTERLOCK CONTINUITY TEST 26
EXPLODED AND PARTS LIST 27




2
CAUTION : This Device is to be Serviced Only by Porperly Qualified Service Personnel. Consult the
Service Manual for Proper Service Procedures to Assure Continued Compliance with the
Federal Performance Standard for Microwave Ovens and for Precautions to be Taken to
Avoid Possible Exposure to Excessive Microwave Energy.




PROPER USE AND SERVICE PRECAUTIONS

1. For Safe Operation
Damage that allows the microwave energy (that cooks or heats the food) to escape will result in poor cooking
and may cause serious bodily injury to the operator.
IF ANY OF THE FOLLOWING CONDITIONS EXIST, OPERATOR MUST NOT USE THE APPLIANCE.
(Only a trained service personnel should make repairs.)

1) A broken door hinge.
2) A broken door viewing screen.
3) A broken front panel, oven cavity.
4) A loosened door lock.
5) A broken door lock.

The door seal area and oven cavity surface be kept clean.
No grease, soil or spatter should be allowed to build up on these surfaces or inside the oven.
DO NOT ATTEMPT TO OPERATE THIS APPLIANCE WITH THE DOOR OPEN. The microwave oven has
concealed switches to make sure the power is turned off when the door is opened. Do not attempt to defeat
them.
DO NOT ATTEMPT TO SERVICE THIS APPLIANCE UNTIL YOU HAVE READ THIS SERVICE MANUAL.

2. For Safe Service Procedures.
1) If the oven is operative prior to servicing, a microwave emission check should be performed prior to servicing
the oven.
2) If any ascertained oven unit is found to have excessive emission level 5mW/cm2, the service person should:
(a) inform the manufacturer, importer or assembler,
(b) repair the unit at no cost to the owner,
(c) attempt to ascertain the cause of the excessive leakage,
(d) tell the owner of the unit not to use the unit until the oven has been brought into compliance.
3) If the oven operates with the door open, the service person should tell the user not to operate the oven and
contact the manufacturer immediately.




CAUTION
MICROWAVE RADIATION

PERSONNEL SHOULD NOT BE EXPOSED TO THE MICROWAVE ENERGY WHICH MAY RADIATE
FROM THE MAGNETRON OR OTHER MICROWAVE GENERATING DEVICE IF IT IS IMPROPERLY
USED OR CONNECTED. ALL INPUT AND OUTPUT MICROWAVE CONNECTIONS, WAVEGUIDES,
FLANGES, AND GASKETS MUST BE SECURE. NEVER OPERATE THE DEVICE WITHOUT A
MICROWAVE ENERGY ABSORBING LOAD ATTACHED. NEVER LOOK INTO AN OPEN
WAVEGUIDE OR ANTENNA WHILE THE DEVICE IS ENERGIZED.




3
SPECIFICATIONS
Item Specification
POWER SUPPLY 230V~50HZ, SINGLE PHASE WITH EARTHING
MICROWAVE 1200 W
MICROWAVE GRILL 1050 W
COMBINATION 2200 W
MICROWAVE ENERGY OUTPUT 800 W
MICROWAVE FREQUENCY 2450 MHz
OUTSIDE DIMENSIONS (WXHXD) 465X360X274 mm(KOG-36050S/36150S)
CAVITY DIMENSIONS (WXHXD) 290X290X220mm
NET WEIGHT 14.5 Kg
TIMER 35 min. DUAL SPEED
FUNCTION SELECTIONS MICROWAVE/GRILL/COMBINATION
MICROWAVE POWER LEVELS 3 LEVELS

* Specifications subject to change without notice.




465 D
274




D : KOG-36250s (352mm)
KOG-36450s (354mm)




4
FEATURES DIAGRAM


2 4 12 13 1




9


3
10



11




5 8



6 14


7