Daewoo KOR-6NFB, Service Manual

Page 1: ...Service Manual Model KOR 6NFB Microwave Oven Sep 2008 S M No R6NFB3S001...

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: ...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 D 290 x 220 x 283 mm 11 4 x 8 7 x 11 1 in NET WEIGHT APPROX 12 5 kg 27 6 Ibs...

Page 5: ...4 EXTERNAL VIEW 1 OUTER DIMENSION...

Page 6: ...outlet from splashes of cooking foods 5 OVEN LAMP Automatically turns on during oven operating 6 SAFETY INTERLOCK SYSTEM 7 CONTROL PANEL 8 GLASS COOKING TRAY Made of special heat resistant glass The...

Page 7: ...Used to set clock 15 Auto cook Used to cook or reheat 16 One touch Used to cook or reheat specific quantities of food 17 More Used to add time to cooking 18 Less Used to remove time from cooking 19 T...

Page 8: ...special type 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...

Page 9: ...n operatiion the oven stops cooking and all information retained To erase all information except the present time touch the CANCEL button once more If the oven door is opened during the oven operation...

Page 10: ...epair 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 o...

Page 11: ...ard 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 doo...

Page 12: ...00 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...

Page 13: ...Loosen two screws on stopper 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 door frame fr...

Page 14: ...embrane from the control panel 6 Remove door open button and button spring from the control panel 7 Reverse the above steps for reassembly REF NO PART CODE PART NAME DESCRIPTION Q TY REMARK B01 351852...

Page 15: ...m2 for a fully assembled oven with door normally closed 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...

Page 16: ...ssembly 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 steps for r...

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: ...e terminals and power cord before check the parts listed below CONDITION CHECK Check continuity of interlock monitor switch with door closed Malfunction of interlock moni tor switch Malfunction of int...

Page 19: ...relay coil Approx 12 VDC Replace NOTE All these switches must be replaced at the same time please refer to Interlock Mechanism And Adjustment TROUBLE 2 Display shows all figures selected but oven does...

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

Page 21: ...jumps in time while counting down 19 Display counts down noticeably too fast while cooking 10 Display does not show the time of day when cancel button is touched 11 Oven lamp and turntable motor do n...

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: ...er 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 s...

Page 25: ...24 WIRING DIAGRAM...

Page 26: ...2 NOTE Each 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...

Page 27: ...26 Measure Point MP1 MP2...

Page 28: ...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 Circuit Diagram Po...

Page 29: ...28 2 PCB CIRCUIT DIAGRAM...

Page 30: ...AZ331J 7 15 REGISTER R4 R14 R20 1 6W 1K 5 RD AZ102J 3 16 REGISTER R3 1 6W 4 7K 5 RD AZ472J 1 17 REGISTER R15 R16 1 6W 100K 5 RD AZ104J 2 18 REGISTER R21 1 6W 100 5 RD AZ101J 1 19 REGISTER R10 13 R19 R...

Page 31: ...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: ...00 HOLDER HV CAPACITOR SECC T0 6 1 F20 3518302200 CAPACITOR HV 2100VAC 0 98UF 187 1 F21 3518400900 DIODE HV AS HVR 1X 30B 187 1 F22 3518701100 FUSE HV 5KV 0 55A HV 41A55 02 1 F23 3518121930 TRANS HV R...

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...