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TROUBLE SHOOTING GUIDE

(  TROUBLE 4 ) The  following visual  conditions indicate  a probable defective touch control  circuit 

1. Incom plete segm ents,

1) Segm ents m issing.

2)  Partical segm ents m issing.

3)  Digit  flickering other than norm al display slight

flickering.

4)  “ : 0 ” does not display  when power is on.

2. A  distinct change  in the diplay are not on when  they

num bers is  the display.

3. O ne or  m ore digits in  the diplay  are not on when they should be.

4. Display indicates a  num ber different  from   one setted.(For  exam ple, when 5:00  setted, 3:00 appears in the  display.) 

5. Specific num bers  (for exam ple 2 or  3) will not  display when the  knob  is turned.

6. Display does not count down or up  with tim e cooking or  clock  operation.

7. O ven is program m able  and cooks norm ally but  no display  shows.

8. Display obviously  jum ps  in tim e  while counting down.

9. Display counts down  noticeably too fast  while  cooking.

10. Display  does not show the  tim e of day when  clear button is touched.

11. O ven lam p and turntable m otor do not stop although cooking is finished. Check if the RELAY 2 contacts close if they are

close, replace touch control circuit.

Summary of Contents for KOR-636T

Page 1: ...rtified 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 o...

Page 2: ...OUTPUT 850W 950W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS W X H X D 465 x 279 x 370mm 18 3 x 11 0 x 14 6 in 495 x 294 x 403mm 19 5 x 11 6 x 15 9 in CAVITY DIMENSIONS W X H X D 290 x 220 x 306 m...

Page 3: ...EXTERNAL VIEW 1 OUTER DIMENSION KOR 636T KOR 866T...

Page 4: ...ugh perforations in screen 4 SPATTER SHIELD Protects the microwave outlet from splashes of cooking foods 5 OVEN LAMP Automatically turns on during oven operating 6 SAFETY INTERLOCK SYSTEM 7 CONTROL PA...

Page 5: ...asy start each press adds 30 seconds easy cooking time 4 Stop Clear Used to stop the operation or to delete the cooking data 5 Auto Cook Used to cook using a program 6 Knob Turn to set the cooking men...

Page 6: ...ype which if damaged must be repaired with cable of same type Such a cable can be purchased from DAEWOO and must be installed by a Qualified Person 6 Examine the oven after unpacking for any damage su...

Page 7: ...the touch 7 The display will show 0 when the oven is plugged in 8 Time clock returns to the present time when the cooking time ends 9 When the STOP CLEAR button is touched during the oven operation th...

Page 8: ...air work 2 Warning about the electric charge in the high voltage capacitor For about 30 seconds after the operation has stopped an electric charge remains in the high voltage capacitor When replacing...

Page 9: ...abinet backward 2 To remove door assembly 1 Remove a screw which secure the stopper hinge top 2 Remove the door assembly from top plate of cavity 3 Reverse the above for reassembly NOTE After replacin...

Page 10: ...K HSW 3 1 A09 3513100730 HOOK KOR 6325 POM 1 A10 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 1 A11 3512300200 GASKET DOOR KOR 61150S PP 1 REF NO PART CODE PART NAME DESCRIPTION QTY REMARK A01 351220413...

Page 11: ...move the decorater door from door frame 9 Reverse the above steps for reassembly 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...

Page 12: ...1 B11 7621301011 SCREW TAPPING T2 PAN 3 10 PW MFZN 6 B12 3514321310 PCB MAIN AS KOR 636T1S 1 B13 7122401211 SCREW TAPPING T2S TRS 4 12 MFZN 3 REF NO PART CODE PART NAME DESCRIPTION QTY B01 3516720240...

Page 13: ...itor 1 Remove a 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...

Page 14: ...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 shaded pole 7 Remove the motor shaded pole 8 Reverse the above...

Page 15: ...ng it under NO condition The lock lever presses the button of the secondary interlock switch to bring it under ON condition 3 Adjustment steps a Loosen the one mounting screw b Adjust interlock switch...

Page 16: ...nals and power cord before check the parts listed below CHECK RESULT CAUSE REMEDY Fuse blows Continuity No Continuity Continuity 0 infinite or Approx 150 310 normal Replace NOTE 1 Replace NOTE 1 Repla...

Page 17: ...filter board No Continuity Defective line filter board Replace NOTE All these switches must be replaced at the same time please refer to Interlock Mechanism And Adjustment CONDITION CHECK RESULT CAUSE...

Page 18: ...eplace Replace Replace Replace Replace Replace Replace Replace o microwave oscillation Check continuity of high voltage rectifier in forward and backward direction with DC megger Check continuity of h...

Page 19: ...tes a number different from one setted For example when 5 00 setted 3 00 appears in the display 5 Specific numbers for example 2 or 3 will not display when the knob is turned 6 Display does not count...

Page 20: ...ssel the load is immediately placed on the center of the shelf which is in the lowest normal position 4 Microwave power is switched on 5 Heating time should be exactly A seconds Refer to table as foll...

Page 21: ...e door cabinet door seem door viewing screen the exhaust air vents and the suction air vents 3 Measuring should be in a counter clockwise direction at a rate of 1 in sec If the leakage of the cabinet...

Page 22: ...he ohmmeter set on the highest resistance scale measure the resistance across the diode terminals Reverse the meter leads and again observe the resistance reading Meter with 6V 9V or higher voltage ba...

Page 23: ...WIRING DIAGRAM...

Page 24: ...OINT REMARK 1 IC1 PIN 6 10 11 5VDC 2 IC1 PIN 22 T 20ms 50Hz 3 IC1 PIN 8 OR 9 T 250 ns 4MHz NO MEASURE POINT WAVE FORM REMEDY REMARK 1 MP1 DC 5V 0 25V Replace VL1 EC1 EC2 NO LOAD 2 MP2 DC 24V 2 0V Repl...

Page 25: ...PRINTED CIRCUIT BOARD MP2 MP1 Measure Point...

Page 26: ...Check method 4 When the door is opened during operation the count down timer does not stop refer to Circuit Diagram Point 1 Check method 5 When the digital clock does not operate properly refer to Ci...

Page 27: ...PRINTED CIRCUIT BOARD 2 P C B CIRCUIT DIAGRAM...

Page 28: ...R3 10 11 1 6W 100 5 RD AZ101J 3 20 RESISTOR R1 4 1 6W 10K 5 RD AZ103J 2 21 RESISTOR R5 1 6W 1M 5 RD AZ105J 1 22 RESISTOR R103 1 4W 1K 5 RD 4Z102J 1 23 RESISTOR R13 1 2W 56 5 RD 2Z560JS 1 24 RESISTOR R...

Page 29: ...TOR R1 4 1 6W 10K 5 RD AZ103J 2 21 RESISTOR R5 1 6W 1M 5 RD AZ105J 1 22 RESISTOR R103 1 4W 1K 5 RD 4Z102J 1 23 RESISTOR R13 1 2W 56 5 RD 2Z560JS 1 24 RESISTOR R14 16 17 1 2W 200 5 RD 2Z201JS 3 25 RESI...

Page 30: ...EXPLODED VIEW AND PARTS LIST 1 DOOR ASSEMBLY Refer to Disassembly and assembly 2 CONTROL PANEL ASSEMBLY Refer to Disassembly and assembly 3 TOTAL ASSEMBLY...

Page 31: ...NGE 5X12 DACRO 1 F20 7S422X4081 SPECIAL SCREW TT2 TRS 4 8 SE MFZN 1 F21 3513003200 HOLDER HV CAPACITOR SECC T0 6 1 F22 3518302200 CAPACITOR HV 2100VAC 0 98uF 187 1 F23 3518400400 DIODE HV HVR 1X 3AB 1...

Page 32: ...22X4081 SPECIAL SCREW TT2 TRS 4 8 SE MFZN 1 F21 3513003200 HOLDER HV CAPACITOR SECC T0 6 1 F22 3518302300 CAPACITOR HV 2100VAC 1 1uF 187 1 F23 3518400400 DIODE HV HVR 1X 3AB 12KV 187 1 F24 3518701100...

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