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           S/M No. : R63D79S002




  Service Manual
  Microwave Oven
  Model: KOR-63D79S
         KOR-63D70S
         KOR-63F79S
         KOR-63F70S




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 micro-
             wave 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 gen-
             erating compartments, check the magnetron, wave guide or transmission line, and cavity for proper align-
             ment, 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 per-
             formed on each oven prior to release to the owner.




     TABLE OF CONTENTS
SAFETY AND PRECAUTIONS ...........................................................................................................................................2
   1. FOR SAFE OPERATION ..................................................................................................................................2
   2. FOR SAFE SERVICE PROCEDURES .............................................................................................................2
SPECIFICATIONS ...............................................................................................................................................................3
EXTERNAL VIEW ................................................................................................................................................................4
   1. OUTER DIMENSION ........................................................................................................................................4
   2. FEATURE DIAGRAM ........................................................................................................................................4
INSTALLATION ...................................................................................................................................................................5
OPERATIONS AND FUNCTIONS .......................................................................................................................................6
DISASSEMBLY AND ASSEMBLY......................................................................................................................................7
INTERLOCK MECHANISM AND ADJUSTMENT .............................................................................................................13
TROUBLE SHOOTING GUIDE .........................................................................................................................................14
MEASUREMENT AND TEST ............................................................................................................................................16
   1. MEASUREMENT OF THE MICROWAVE POWER OUTPUT ........................................................................16
   2. MICROWAVE RADIATION TEST ...................................................................................................................17
   3. COMPONENT TEST PROCEDURE ...............................................................................................................18
WIRING DIAGRAM ............................................................................................................................................................19
EXPLODED VIEW AND PARTS LIST...............................................................................................................................20
   1. DOOR ASSEMBLY .........................................................................................................................................20
   2. CONTROL PANEL ASSEMBLY ......................................................................................................................20
   3. TOTAL ASSEMBLY.........................................................................................................................................20




                                                                                       1
SAFETY AND 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 gasket plate and oven cavity surface should 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 certified oven unit is found to servicing, a microwave emission check should be performed prior to servicing the
    oven.
      (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 and CDRH immediately.




  IMPORTANT
  The wire in this mains lead coloured in accordance with the following code.
  Green-and-yellow : Each
  Blue               : Neutral
  Brown              : Live

  As the colours of the wires in the manins lead of this appliance may not correspond with the coloured markings
  identifying the terminals in your plug, proceed as follows.
  The wire which is coloured green-and-yellow must be connected to the terminal in the plug which is marked with
  the letter `E', earth symbol or coloured green-and-yellow.
  The wire which is coloured blue must be connected to the terminal which is marked with the letter `N' or coloured
  black.
  The wire which is coloured brown must be connected to the terminal which is marked with the letter `L' or
  coloured red.



  NOTE
  This oven is designed for counter-top use only.




                                                            2
SPECIFICATIONS
 MODEL                                        KOR-63D79S                       KOR-63D70S
 POWER SUPPLY                                230V~50Hz, SINGLE PHASE WITH GROUNDING
                       MICROWAVE                 1000W                              1,200W
 POWER
                       GRILL
 CONSUMPTION
                       COMBINATION
 MICROWAVE ENERGY OUTPUT                         700W                               800W
 MICROWAVE FREQUENCY                                            2450MHz
 OUTSIDE DIMENSIONS (W x H x D)                    465 x 279 x 364 mm (18.3 x 11.0 x 14.4 in)
 CAVITY DIMENSIONS (W x H x D)                     290 x 220 x 306 mm (11.4 x 8.7 x 12.0 in)
 NET WEIGHT                                              APPROX. 13kg (28.7 Ibs.)
 TIMER                                                    35 MIN. DUAL SPEED
 FUNCTION SELECTIONS                                          MICROWAVE
 POWER SELECTIONS                                               7 LEVELS
 CAVITY VOLUME                                                  0.7 Cu. Ft.

* SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.



 MODEL                                        KOR-63F79S                       KOR-63F70S
 POWER SUPPLY                                230V~50Hz, SINGLE PHASE WITH GROUNDING
                       MICROWAVE                 1000W                              1,200W
 POWER
                       GRILL
 CONSUMPTION
                       COMBINATION
 MICROWAVE ENERGY OUTPUT                         700W                               800W
 MICROWAVE FREQUENCY                                            2450MHz
 OUTSIDE DIMENSIONS (W x H x D)                    465 x 279 x 364 mm (18.3 x 11.0 x 14.4 in)
 CAVITY DIMENSIONS (W x H x D)                     290 x 220 x 306 mm (11.4 x 8.7 x 12.0 in)
 NET WEIGHT                                              APPROX. 13kg (28.7 Ibs.)
 TIMER                                                    35 MIN. DUAL SPEED
 FUNCTION SELECTIONS                                          MICROWAVE
 POWER SELECTIONS                                               7 LEVELS
 CAVITY VOLUME                                                  0.7 Cu. Ft.

* SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.




                                             3
EXTERNAL VIEW
1. OUTER DIMENSION




2. FEATURE DIAGRAM




1. SAFETY INTERLOCK SYSTEM                                         7. ROLLER GUIDE
                                                                      This must always be used for cooking together with the
2. DOORVIEWING SCREEN
                                                                      glass cooking tray.
   Allos viewing of food. The screen is designed so that
   light can pass through, but not the microwave.                  8. COUPLER
                                                                      This fits over the shaft in the center of the ovens cavity
3. DOOR HOOK
                                                                      floor. This is to remain in the oven for all cooking.
   When the door is closed, it will automatically lock shut.
   If door is opened while oven is operating, magnetron            9. KNOB V.P.C.
   tube will immediately stop operating.                              Used in setting cooking time for all functions.
4. OVEN CAVITY                                                     10. KNOB TIMER
                                                                       Used in setting cooking time for all functions.
5. DOOR SEAL
   Door seal maintains the microwave within the oven cav-          11. DOOR RELEASE BUTTON-
   ity and prevents microwave leakage.                                 By pushing this button the latch system cut off all cir-
                                                                       cuits and stops the oven before the door is opened.
6. GLASS COOKING TRAY
   Made of special heat resistant glass. Food in a proper
   receptacle is placed on this tray for cooking.




                                                               4
INSTALLATION
1. Steady, flat location.
  This microwave oven should be set on a steady, flat surface.
2. Leave space behind and side.
  All air vents should be kept a clearance. If all vents are covered during operation, the oven may be overheated
  and, eventually, cause oven failure.
3. Away from radio, and TV sets
  Poor television reception and radio interference may result if the oven is located close to a TV, radio, antenna, or
  feeder and so on.
4. Away from heating appliances and water taps
  Keep the oven away from hot air, steam or splash when choosing a place to position it, or the insulation might be
  adversely affected and breakdowns occur.
5. Power supply
  



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