Service Manuals, User Guides, Schematic Diagrams or docs for : Daewoo Micro Wave KOC-980T20S KOC970T&980T

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KOC970T&980T


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     Service Manual
     Microwave Oven
     Model: KOC-970T1S
            KOC-970T2S
            KOC-980T10S
            KOC-980T20S




DAEWOO ELECTRONICS CO., LTD.
 PRECAUTIONS TO BE OBSERVED BEFORE AND
 DURING SERVICING TO AVOID POSSIBLE
 EXPOSURE TO EXCESSIVE MICROWAVE ENERGY
 (a) D o not operate or allow the oven to be operated w ith the door open.
 (b) M ake the follow ing safety checks on all ovens to be serviced before activating the m agnetron or other m icrow ave
     source, and m ake repairs as necessary: (1) Interlock operation, (2) P roper door closing, (3) S eal and sealing
     surfaces (arcing, w ear, and other dam age), (4) D am age to or loosening of hinges and latches, (5) E vidence of
     dropping or abuse.
 (c) B efore turning on pow er to the m icrow ave oven for any service test or inspection w ithin the m icrow ave
     generating com partm ents, check the m agnetron, w ave guide or transm ission line, and cavity for proper
     alignm ent, integrity, and connections.
 (d) A ny defective or m isadjusted com ponents in the interlock, m onitor, door seal, and m icrow ave generation and
     transm ission system s shall be repaired, replaced, or adjusted by procedures described in this m anual before the
     oven is released to the ow ner.
 (e) A m icrow ave leakage check to verify com pliance w ith the Federal perform ance standard should be perform ed on
     each oven prior to release to the ow ner.







SAFETY AND PRECAUTIONS ........................................................................................................ 2
SPECIFICATIONS ................................................................................................................ ............ 3
EXTERNAL VIEW ................................................................................................................. ........... 4
  1. OUTER DIMENSION .................................................................................................................... 4
  2. FEATURE DIAGRAM .................................................................................................................. 5
INSTALLATION .................................................................................................................. .............. 7
CONTROL PANEL ................................................................................................................. .......... 8
DISASSEMBLY AND ASSEMBLY .................................................................................................. 9
INTERLOCK MECHANISM AND ADJUSTMENT ........................................................................... 18
TROUBLE SHOOTING GUIDE ........................................................................................................ 19
MEASUREMENT AND TEST ........................................................................................................... 25
  1. MEASUREMENT OF THE MICROWAVE POWER OUTPUT ..................................................... 25
  2. ELECTRICAL CONTINUITY CHECK OF INTERLOCK SWITCH ................................................ 26
  3. MICROWAVE RADIATION TEST ................................................................................................ 27
  4. COMPONENT TEST PROCEDURE ............................................................................................ 28
WIRING DIAGRAM ................................................................................................................ .......... 29
SCHEMATIC DIAGRAM .................................................................................................................. 30
EXPLODED VIEWS AND PARTS LIST ........................................................................................... 33
PRINTED WIRING BOARD .......................................................................................................... .... 39
P.C.B. CIRCUIT DIAGRAM .............................................................................................................. 44




                                                                          
 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.
   (1) inform the manufacturer, importer or assembler,
   (2) repair the unit at no cost to the owner,
   (3) attempt to ascertain the cause of the excessive leakage,
   (4) 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.

IMPORTANT
       The w ire in this m ains lead coloured in accordance w ith the following code.

       G reen-and-yellow              : Earth
       Blue                           : N eutral
       Brow n                         : Live

       As the colours of the w ires in the m ains lead of this appliance m ay not correspond w ith the coloured m arkings
       identifying the term inals in your plug, proceed as follow s.
       The w ire w hich is coloured green-and-yellow m ust be connected to the term inal in the plug which is m arked w ith the
       letter 'E' or by earth sym bol or 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 m ust be connected to the term inal which is m arked with the letter 'L' or coloured red.


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



                                                                  
 SPECIFICATIONS

 M O DE L                                              KO C-970T1S                          KO C-970T2S
 PO W E R S UP PLY                                     230V~50H z                           230V~50H z
                                  M IC RO W AV E       1450W                                1450W
                                  G RILL               1200W                                1200W
 PO W E R C O N SU M PTIO N       C O N VE CTIO N      1550W                                1550W
                                  A UTO CO O K         1850W                                1850W
                                  C O M BIN ATIO N     2600W (S im ultaneous)               1550W (S equential)
 M IC RO WAVE EN ER G Y O U TP UT                      1000W (IE C705)                      1000W (IE C705)
 M IC RO WAVE FR EQ UE NC Y                            2450M Hz                             2450M Hz
 O U TS IDE DIM E N SIO N S (W X H X D )               526 x 345 x 412 m m (20.7 x 13.6 x 16.2 in.)
 CAVITY D IM EN SIO NS (W X H X D)                     335 x 250 x 339 m m (13.2 x 9.8 x 13.3 in.)
 NE T W EIG HT                                         AP PR O X . 19.5 K g (43 lbs.)
 TIM ER                                                60 m inutes
 FU N C TIO N S ELE C TIO N S                          M IC R O W AV E /G RILL/C O N VE C TIO N /CO M B I
 PO W E R SELE CTIO NS                                 10 LEVELS
 CAVITY V O LUM E                                      1.0 Cu.Ft.




 M O DE L                                              KO C980T10S                          KO C980T20S
 PO W E R S UP PLY                                     230V~50H z                           230V~50H z
                                    M IC RO WAVE       1450W                                1450W
                                    G R ILL            1200W                                1200W
 PO W E R C O N SU M PTIO N         CO NV EC TIO N     1550W                                1550W
                                    AU TO CO O K       1850W                                1850W
                                    CO M B INATIO N    2600W (S im ultaneous)               1550W (S equential)
 M IC RO WAVE EN ER G Y O U TP UT                      1000W (IE C705)                      1000W (IE C705)
 M IC RO WAVE FR EQ UE NC Y                            2450M Hz                             2450M Hz
 O U TS IDE DIM E N SIO N S (W X H X D )               526 x 345 x 482 m m (20.7 x 13.6 x 19.0 in.)
 CAVITY D IM EN SIO NS (W X H X D)                     335 x 250 x 339 m m (13.2 x 9.8 x 13.3 in.)
 NE T W EIG HT                                         AP PR O X . 21 Kg (46.3 lbs.)
 TIM ER                                                60 m inutes
 FU NC TIO N SELE CTIO NS                              M ICR O W AV E/G RILL/C O N VECTIO N /CO M BI
 PO W E R SELE CTIO NS                                 10 LE VE LS
 CAVITY V O LUM E                                      1.0 Cu.Ft.

SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.




                                                          
EXTERNAL VIEW
1. OUTER DIMENSION

 KOC-970T




                Fig.1 Front view           Fig.2 Side view




 KOC980T




                 Fig.1 Front view      Fig.2 Side view




                                    
                                                                                                             EXTERNAL VIEW



2. FEATURE DIAGRAM

  KOC-970T




1. Door seal - Door seal maintains the microwave energy within the oven cavity and prevents microwave leakage.
2. Door hook - When the door is closed, it will automatically shut. If the door is opened while
   the oven is operating, the magnetron will immediately stop operating.
3. Door viewing screen - Allows viewing of food. The screen is designed so that light can pass through, but not the microwave.
4. Top heater - Turns on when convection, grill and combi cooking is selected.
5. Oven lamp - Automatically turns on during oven operating.
6. Safety interlock system
7. Control panel
8. Turntable tray - Rotates during cooking and ensure even distribution of Microwaves.
   It can also be used as a cooking utensil.
9. Oven front plate
10. Rotating base - This fits over the shaft in the center of the ovens cavity floor. This is to remain in the oven for all cooking.
   It should only be removed for cleaning.
11. Under heater




                                                                  
  EXTERNAL VIEW



  KOC980T




1. Door seal - Door seal maintains the microwave energy within the oven cavity and prevents microwave leakage.
2. Door hook - When the door is closed, it will automatically shut. If the door is opened while the oven is operating,
   the magnetron will immediately stop operating.
3. Door viewing screen - Allows viewing of food. The screen is designed so that light can pass through, but not the microwave.
4. Top heater - Turns on when convection, grill and combi cooking is selected.
5. Oven lamp - Automatically turns on during oven operating.
6. Safety interlock system
7. Control panel
8. Turntable tray - Rotates during cooking and ensure even distribution of Microwaves.
   It can also be used as a cooking utensil.
9. Oven front plate
10. Rotating base - This fits over the shaft in the center of the ovens cavity floor. This is to remain in the oven for all cooking.
   It should only be removed for cleaning.
11. Under heater
12. Metal rack




                                                                  
 INSTALLATION
1. Steady, flat location
   This microwave oven should be set on a steady, flat surface.
   This microwave oven is designed for counter top use only.
2. Leave space behind and side
   All air vents should be kept a clearance. If all vents are covered during operation, the oven may overheat and,
   eventually, cause 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. Position the oven as far from them as possible.
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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