1. DL manuals
  2. Daewoo
  3. Microwave Oven
  4. KOR-63DB0S
  5. Service Manual

Daewoo KOR-63DB0S Service Manual - Specifications

Summary of KOR-63DB0S

  • Page 1

    Service manual model : kor-6nfb microwave oven sep. 2008 s/m no. : r6nfb3s001.

  • Page 2

    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 the door open. (b) make the following safety checks on all ovens to be serviced before activating the magnetron or other micro- w...

  • Page 3: Safety and Precautions

    2 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 trai...

  • Page 4: Specifications

    Model kor-6nfb3s kor-6nfb5s power supply 230v-50hz, single phase with earthing power microwave 1000w 1200w consumption grill combination microwave energy output 700w 800w microwave frequency 2450mhz outside dimensions (w x h x d) 465 x 279 x 324 mm (18.3 x 11.0 x 12.8 in) cavity dimensions (w x h x ...

  • Page 5: External View

    4 external view 1. Outer dimension.

  • Page 6

    5 1. Door seal door seal maintains the microwave within the oven cavity and prevents microwave leakage. 2. Door hook when the door is closed, it will automatically lock shut. If door is opened while oven is operating, magnetron tube will immediately stop operating. 3. Door screen allows viewing of f...

  • Page 7

    6 10 min 1 min 10 sec 1 hour 10 min 1 min 700w d 1 2 3 5 7 8 0 4 6 9 q 1 1. Display – cooking time, power level, indicators and present time are displayed. 1 2. Power – used to set power level. 1 3. Defrost – used to defrost foods. (for time) 1 4. Clock – used to set clock. 1 5. Auto cook – used to ...

  • Page 8: Installation

    7 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 a...

  • Page 9: Operations and Functions

    8 operations and functions 1 1. Connect the main lead to an electrical outlet. 1 2. After placing the food in a suitable container, open the oven door and put it on the glass tray. The glass tray must always be in place during cooking. 1 3. Close the door securely. 1 4. When the oven door is opened,...

  • Page 10: Disassembly and Assembly

    9 disassembly and assembly cautions to be observed when trouble shooting. Unlike many other appliances, the microwave oven is high-voltage, high-current equipment. It is completely safe during normal operation. However, carelessness in servicing the oven can result in an electric shock or possible d...

  • Page 11

    10 1. To remove cabinet 1) remove three screws on cabinet back. 2) push the cabinet backward. 2. To remove door assembly 1) remove two screws which secure the stopper hinge top. 2) remove the door assembly from top plate of cavity. 3) reverse the above for reassembly. Note : after replacing the door...

  • Page 12

    11 3. To remove door parts. Ref no. Part code part name description q’ty remark a01 3512205200 frame door pp si83c 1 a02 3517007300 barrier-screen*0 pet t0.125 1 a03 3515204100 stopper singe *t as kor-63150s 1 a04 3511705500 door weld as kor-61150s 1 a05 3517002800 barrier-screen *i t0.1 1 a06 35123...

  • Page 13

    12 4. Method to reduce the gap between the door seal and the oven front surface. (1) to reduce gap located on part ‘a’ loosen a screws on stopper hinge top, and then push the door to contact the door seal to oven front surface. Tighten two screws. (2) to reduce gap located on part ‘b’ loosen two scr...

  • Page 14

    13 5. To remove control panel parts. 1) remove the screw which secure the control panel, push up two snap fits and draw forward the control panel assembly. 2) remove the door open lever from the control panel. 3) remove four screws which secure the pcb assembly to control panel. 4) disconnect membra...

  • Page 15

    14 note : never install the magnetron without the metallic gasket plate which is packed with each magnetron to pre- vent microwave leakage. Whenever repair work is carried out on magnetron, check the microwave leakage. It shall not exceed 4mw/cm 2 for a fully assembled oven with door normally closed...

  • Page 16

    15 8. To remove wind guide assembly. 1) remove a screw for earthing. 2) remove the noise filter from the wind guide. 3) remove a screw which secure the wind guide assembly. 4) draw forward the wind guide assembly. 5) pull the fan from the motor shaft. 6) remove two screws which secure the motor shad...

  • Page 17

    16 interlock mechanism and adjustment the door lock mechanism is a device which has been specially designed to completely eliminate microwave radiation when the door is opened during operation, and thus to perfectly prevent the danger resulting from the leakage of microwave. (1) primary interlock sw...

  • Page 18: Trouble Shooting Guide

    17 (trouble 1) oven does not operate at all ; any inputs can not be accepted. Trouble shooting guide following the procedure below to check if the oven is defective or not. 1. Check grounding before trouble checking. 2. Be careful of the high voltage circuit. 3. Discharge the high voltage capacitor....

  • Page 19

    18 condition check check continuity of primary inter- lock switch malfunction of pri- mary interlock switch result no continuity cause remedy adjust or replace turn table motor and oven lamp do not turn on check continuity of secondary interlock switch malfunction of sec- ondary interlock switch no ...

  • Page 20

    19 (trouble 3) no microwave oscillation even though fan motor rotates. Condition check result check continuity of high voltage capacitor terminals with wires removed continuity cause defective high voltage trans- former remedy replace no microwave oscillation check continuity of high voltage fuse re...

  • Page 21

    20 (trouble 4) the following visual conditions indicate a probable defective touch control circuit or membrane switch assembly. 1 1. Incomplete segments (1) segments missing (2) partical segments missing (3) digit flickering other than normal display slight flickering (4) “ :0” does not display when...

  • Page 22: Measurement and Test

    21 measurement and test 1. Measurement of the microwave power output microwave output power can be checked by indirectly measuring the temperature rise of a certain amount of water exposed to the microwave as directed below. Procedure 1. Microwave power output measurement is made with the microwave ...

  • Page 23

    22 2. Microwave radiation test procedures 1. Prepare microwave energy survey meter, 600cc glass beaker, and glass thermometer 100˚c(212˚f). 2. Pour 275cc±15cc of tap water initially at 20±5˚c(68±9˚f) in the 600cc glass beaker with an inside diameter of approx. 95mm(3.5in.). 3. Place it at the center...

  • Page 24

    23 3. Component test procedure • high voltage is present at the high voltage terminal of the high voltage transformer during any cooking cycle. • it is neither necessary nor advisable to attempt measurement of the high voltage. • before touching any oven components or wiring, always unplug the oven ...

  • Page 25: Wiring Diagram

    24 wiring diagram.

  • Page 26: Printed Circuit Board

    25 1. Circuit check procedure 1. Low voltage transformer check • the low voltage transformer is located on the p.C.B. • measuring condition: input voltage : 230v/frequency : 50hz 2. Voltage check • key check point • check method printed circuit board no check point remark 1 ic 1 pin 14 -5 vdc 2 ic 1...

  • Page 27

    26 measure point mp1 mp2.

  • Page 28

    27 3. When there is no microwave oscillation 1) when touching start pad, oven lamp does not turn on. Fan motor does not rotate, but cook indicator in display comes on. * cause : relay 2 does not operate. → refer to circuit diagram (point 3) - check method 2) when touching start pad, oven lamp turns ...

  • Page 29

    28 2. Pcb circuit diagram.

  • Page 30

    29 no. Name symbol specification part code q'ty 1 capactior elec ec1 16v rs 100mf cexf1c101v 1 2 capactior elec ec2 25v rss 1000mf cexf1e102v 1 3 connector wafer cn1 yw396-02v 351915020 1 4 connector film cn2 fcz 254-10p 441m367150 1 5 connector wafer cn3 yw396-05av 3519150510 1 6 diode rectify d1~9...

  • Page 31: Exploded View and Parts List

    30 1. Door assembly refer to disassembly and assembly. 2. Control panel assembly refer to disassembly and assembly. 3. Total assembly exploded view and parts list.

  • Page 32

    31 no part code part name description q'ty remark a00 3511714450 door as kor-63f59a 1 b00 pkcpswee00 control-panel as kor-63fb9s 1 kor-6nfb3s pkcpswee10 kor-63fb0s 1 kor-6nfb5s f01 3510808400 cabinet as kor-6nm51a 1 f02 7112401011 screw tapping t1 trs 4*10 mfzn 3 f03 3516117400 cavity as kor-6nm51a ...

  • Page 33

    S/m no. : r6nfb3s001 daewoo electronics corp. 686, ahyeon-dong mapo-gu seoul, korea c.P.O. Box 8003 seoul, korea telex: dwelec k28177-8 cable: “daewooelec” printed date: apr. 2005.