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6. To remove high voltage capacitor. 

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 voltage circuit wiring

7. To remove magnetron.

1) Remove a screw which secure the magnetron.
2) Remove the magnetron.
3) Reverse the above steps for reassembly.

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

for a fully assembled oven with door normally closed.

Summary of Contents for KOR-634R

Page 1: ...36 Service Manual Microwave Oven Model KOR 634R DAEWOO ELECTRONICS CO LTD http svc dwe co kr...

Page 2: ...k 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 microwa...

Page 3: ...fied 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 owne...

Page 4: ...QUENCY 2450MHz OUTSIDE DIMENSIONS W X H X D 465 x 279 x 360 mm 18 3 x 11 0 x 14 2 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 13 kg 28 7 Ibs TIMER 59 min F...

Page 5: ...5 EXTERNAL VIEW 1 OUTER DIMENSION...

Page 6: ...ing of food Microwave cannot pass through perforations in screen 4 SPATTER SHIELD Protects the microwave outlet from splashes of cook ing foods 5 OVEN LAMP Automatically turns on during oven operating...

Page 7: ...frost by weight or time 4 Clock Used to set clock 5 Auto cook Used to using a program or to reheat 6 Dial knob Used to set time and weight 7 Stop Clear Used to stop the oven operation or to erase all...

Page 8: ...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 such as A misaligned door b...

Page 9: ...eturns to the present time when the cooking time ends 10 When the STOP CLEAR pad is touched during the oven operatiion the oven stops cooking and all information retained To erase all information exce...

Page 10: ...air work 2 Warning about the electric charge in the high voltage capacitor For about 30 seconds after the operation stopped and electric charge remains in the high voltage capacitor When replacing or...

Page 11: ...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 a...

Page 12: ...KOR 634R0S 1 A05 3517002800 BARRIER SCREEN I PE 0 1T 1 A06 3512300200 GASKET DOOR PP 1 A07 3513100730 HOOK POM BLACK 1 A08 3515101310 SPRING HOOK HSW 3 1 A09 7001503311 SCREW MACHINE PAN 5X33 MFZN 2 A...

Page 13: ...topper hinge under and then push the door to contact the door seal to oven front surface Tighten two screws 1 Remove the gasket door from door weld as 2 Remove the barrier screen inner from weld as 3...

Page 14: ...ART CODE PART NAME DESCRIPTION Q TY REMARK B01 3513404620 KNOB VOLUME ABS XR 401 H 2938 1 B02 3511604510 DECORATOR C PANEL STS T0 6 1 B03 3516003910 SPECIAL DOUBLE TAPE SI 161 T0 15 1 B04 3515501530 W...

Page 15: ...ge circuit wiring 7 To remove magnetron 1 Remove a screw which secure the magnetron 2 Remove the magnetron 3 Reverse the above steps for reassembly NOTE Never install the magnetron without the metalli...

Page 16: ...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 reassembly 9 To remove H V transformer...

Page 17: ...pushes the lock lever downward The lock lever presses the button of the interlock monitor switch to bring it under NO condition and presses the button of the secondary interlock switch to bring it un...

Page 18: ...act with door partially open until interlock moni tor switch contact close COM NO Replace Note 1 Shorted contacts of primary interlock switch Shorted contacts of primary interlock switch Defective low...

Page 19: ...urn on Check continuity of primary interlock switch No Continuity Malfunction of primary interlock switch Adjust or Replace Malfunction of sec ondary interlock and D O M switch Check continuity of sec...

Page 20: ...rectifier Replace Connect megger leads to magnetron terminal and magnetron body Continuity Defective magnetron Replace Check resistance of primary and secondary coil of high voltage transformer Defect...

Page 21: ...programable and cooks normally but no display shows 8 Display obviously jumps in time while counting down 9 Display counts down noticeably too fast while cooking 10 Display does not show the time of...

Page 22: ...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 23: ...net 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 door seem i...

Page 24: ...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 batteries shou...

Page 25: ...WIRING DIAGRAM 25...

Page 26: ...ach measure point must be measured with GND points NOTE 1 Refer to Circuit Diagram point 4 2 Secondary side voltage of the low voltage transformer changes in proportion to fluctuation of power source...

Page 27: ...Measure Point 27...

Page 28: ...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 Circuit Diagram Point 5...

Page 29: ...29 2 PCB CIRCUIT DIAGRAM...

Page 30: ...0 R CARBON FILM R13 1 6W 100 5 RD AZ101J 1 21 R CARBON FILM R1 R7 1 6W 330 5 RD AZ331J 7 22 R CARBON FILM R8 9 11 14 20 1 6W 1K 5 RD AZ102J 5 23 R CARBON FILM R15 16 17 1 6W 10K 5 RD AZ103J 3 24 R CAR...

Page 31: ...31 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: ...11 TAPTITE SCREW TT2 TRS 4 8 MFZN 1 F21 3513003200 HOLDER HV CARACITOR SECC T0 6 1 F22 3518302200 CAPACITOR HV 2100VAC 0 98uF 187 1 F23 3518400400 DIODE HV HVR 1X 3AB 12KV 187 1 F24 3518701100 FUSE HV...

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