Summary of KOR-6QDB
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Service manual model : kor-6qdb microwave oven feb. 2008 s/m no. : or6qdb3001.
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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 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
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 traine...
Page 4: Specifications
3 specifications power supply 120v ac, 60hz single phase with grounding input power 1100 w microwave energy output 700 w frequency 2,450mhz outside dimensions (w h d) 465 x 279 x 331 mm (18.3 x 11.0 x 13.0 in.) cavity dimensions (w h d) 301 x 293 x 219 mm (11.9 x 11.5 x 8.6 in.) cavity volume .68 cu...
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4 2. Features diagram 1 1 door seal - door seal maintains the microwave energy within the oven cavity and prevents microwave leakage. 2 2 oven cavity 3 3 safety interlock system 4 4 control panel 5 5 door release button - by pushing this button the latch system cut off all circuits and stops the ove...
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5 3. Control panel 0 time set pad-used to set the cooking time and the present time. Q display-cooking time, power level, indicators and present time are displayed. W one touch-used to cook or reheat specific quantities of food. E more-used to add time to cooking. R less-used to remove time from coo...
Page 7: Installation
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,...
Page 8: Operations and Functions
Operations and functions 1. Connect the mains lead to an electrical outlet. 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. 3. Close the door securely. 4. The oven door can be opened at any tim...
Page 9: Disassembly and Assembly
Disassembly and assembly cautions to be observed when troubleshooting. 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 dang...
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1. To remove cabinet 1) remove three screws on cabinet back. 2) pull 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 as...
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10 3. To remove door parts. (1) remove the gasket door from door painting as. (2) remove the door frame from door painting as. (3) remove the stopper hinge top from door painting as. (4) remove the spring and the hook. (5) remove the barrier screen outer from door frame. (6) reverse the above steps ...
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11 4. Method to reduce the gap between the door seal and the oven front surface. (1) to reduce gap located on part ‘a’ • loosen two screws on the stopper hinge top, and then push the door to contact the door seal to the oven front surface. • tighten two screws. (2) to reduce gap located on part ‘b’ ...
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12 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 four screws which secure the pcb assembly to control panel. (3) disconnect membrane tail from the connector of the pcb assembly. (4)...
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13 6. To remove high voltage capacitor. 1) remove the screw which secure the grounding ring terminal of the h.V. Diode and the capacitor holder. 2) remove the h.V. Diode from the capacitor holder. 3) reverse the above steps for reassembly. ◆ high voltage circuit wiring 7. To remove magnetron. 1) rem...
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14 8. To remove wind guide assembly. 1) remove the screw which secure the wind guide assembly. 2) draw forward the wind guide assembly. 3) pull the fan from the motor shaft. 4) remove two screws which secure the motor shaded pole. 5) remove the motor shaded pole. 6) reverse the above steps for reass...
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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 switc...
Page 17: Troubleshooting Guide
16 (trouble 1) oven does not operate at all ; any inputs can not be accepted. Troubleshooting 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. ...
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17 condition check check continuity of magnetron defective magnetron result no continuity cause remedy replace outlet has proper voltage fuse does not blow. Condition check check continuity of primary interlock switch malfunction of primary interlock switch result no continuity cause remedy adjust o...
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18 (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 transformer remedy replace no microwave oscillation check continuity of high voltage rectifier...
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(trouble 4) the following visual conditions indicate a probable defective touch control circuit or membrane switch assembly. 1. Incomplete segments (1) segments missing (2) partial segments missing (3) digit flickering other than normal display slight flickering (4) :0 does not display when power is...
Page 21: Measurement and Test
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 ove...
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21 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. 85mm(3.5in.). 3. Place it at the center...
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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 from its ...
Page 24: Wiring Diagram
23 wiring diagram.
Page 25: Printed Circuit Board
24 1. Circuit check procedure 1. Low voltage transformer check the low voltage transformer is located on the p.C.B. Measuring condition: input voltage : 120v/frequency : 60hz 2. Voltage check key check point check method printed circuit board no check point remark 1 ic 1 pin 5 5 vdc 2 ic 1 pin 8 3 i...
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25 measure point mp1 mp2 gnd.
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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. - check method 2) when touching start pad, oven lamp turns on. Fan motor and turntable rotate and cook indicator in display comes on. -...
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27 2. Pcb circuit diagram.
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28 3. Pcb location no. No name symbol specification part code q'ty remark 1 buzzer bz1 bm-20k (bujeon) 3515600100 1 2 c array ca1 7p(6) 1000pf m 50v 2.54mm cn6xb-102m 1 3 conn wafer cn1 yw396-02v(yeonho) 3519150520 1 4 conn film cn2 fcz 254-11(yeon ho) 441m367160 1 5 conn wafer cn3 yw396-05av(yeonho...
Page 30: Exploded View and Parts List
29 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.
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30 r e f n o p a r t c o d e p a r t n a m e d e s c r i p t i o n q'ty a00 3511725360 door as kor-6qdb3s 1 b00 pkcpswf300 control-panel as kor-6qdb3a27 1 f01 3510808400 cabinet as kor-6nm51a 1 f02 3516004100 special screw t1 trs lr4 pole 4x10 mfzn 3 f03 3516117400 cavity as kor-6nm51a 1 f04 3518902...
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S/m no. : 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: feb. 2008.