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DAEWOO ELECTRONICS KOC-924T9A, Service Manual

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Service Manual

Microwave Oven

Model: KOC-924T9A

S/M No.

: C924T9A001

http : //svc.dwe.co.kr

Feb. 2003

✔

Caution

: In this Manual, some parts can be changed for improving,

their performance without notice in the parts list. So, if you
need the latest parts information, please refer to PPL(Parts
Price List) in Service Information Center (http://svc.dwe.co.kr).

Summary of Contents for KOC-924T9A

Page 1: ...p svc dwe co kr Feb 2003 Caution In this Manual some parts can be changed for improving their performance without notice in the parts list So if you need the latest parts information please refer to P...

Page 2: ...proper alignment integrity and connections d Any defective or misadjusted components in the interlock monitor door seal and microwave generation and transmission systems shall be repaired replaced or...

Page 3: ...d prior to servicing the oven 2 If any certified oven unit is found to have excessive emission level 5mw cm2 the service person should a inform the manufacturer importer or assembler b repair the unit...

Page 4: ...GY OUTPUT 1000W IEC705 MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS W X H X D 542X329X515mm 21 3X13 0X20 3 in CAVITY DIMENSIONS W X H X D 350X230X355mm 13 8X9 1X14 0 in NET WEIGHT APPROX 20kg 44 1 l...

Page 5: ...4 3 EXTERNAL VIEW 542 329 515 1 OUTER DIMENSION...

Page 6: ...atically turns on during oven operating 16 SAFETY INTERLOCK SYSTEM 17 CONTROL PANEL 18 TURNTABLE TRAY Rotates during cooking and ensure even distribution of Microwaves It can also be used as a cooking...

Page 7: ...13 amperes 120Volts 60Hz grounded outlet Power supply cord is about 0 8 meters long 1 A short power supply cord is provided to reduce the risks resulting from becoming entangled in or tripping over a...

Page 8: ...When blinking the oven is operating in TIME DEFROST Auto cook When blinking the oven is operating AUTO COOK Lock When lighting the oven is CHILD LOCK Con vection When blinking the oven is operating in...

Page 9: ...ning repair work 2 Warning about the electric charge in the high voltage capacitor For about 30 seconds after the operation has stopped electric charge remains in the high voltage capacitor When repla...

Page 10: ...d 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 assemby 9 NOTE After replacing the door a...

Page 11: ...12302400 GASKET DOOR PBT 1 A08 3516602200 DOOR PLATE SBHG 3A T0 7 1 A09 3515304800 SUPPORTER HINGE T SCP 1 T2 0 1 A10 3517007000 BARRIER SCREEN I TEMP GLASS T2 0 1 A11 3511608700 DECORATOR DOOR T SUS4...

Page 12: ...assembly 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 stopper hinge top and then push the door to contact the door...

Page 13: ...06 B07 B08 B09 B10 B11 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 B07 which secure the PCB Main ASS Y 3 Pu...

Page 14: ...normally closed Magnetron antenna MAGNETRON Metallic gasket plate Cooling fin Filament terminal 6 To remove high voltage capacitor 1 Remove a screw which secure the grounding ring terminal of the H V...

Page 15: ...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 steps for...

Page 16: ...11 SCREW TAPPING T1 TRS 4X10 MFZN 1 2 3512520500 GUIDE AIR OUTLET SA1D T0 5 1 3 3510607700 BRACKET HEATER T SECC T0 5 1 4 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 1 5 3510607700 BRACKET HEATER T SA1D...

Page 17: ...0 MFZN 1 2 3511410500 COVER MOTOR B SA1D 80 T0 5 1 3 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 1 4 3511407900 COVER B SA1D 80 T0 5 1 5 3512767600 HARNESS CONVECTION KOC 924T0S 1 6 7113400814 SCREW TAP...

Page 18: ...AME DESCRIPTION Q TY REMARK 1 441BE5203 MOTOR SYNCRO GM 20 24FDB2 1 2 3512300301 GASKET C2700W T1 0 1 3 7113400814 SCREW TAPPING T1 BIN 4X8 MFNI 2 4 3512521200 GUIDE ROTARY TEFLON 1 5 7112401011 SCREW...

Page 19: ...closed the hook pushes the lock lever downward The lock lever presses the button of the interlock monitor switch to bring it under OFF condition and presses the button of the secondary interlock switc...

Page 20: ...of the terminals and power cord before check the parts listed below CONDITION CHECK Check continuity of interlock monitor switch with door closed COM NC Check continuity of both primary and secondary...

Page 21: ...just for adjustment instructions TROUBLE 2 Display shows all figures selected but oven does not start cooking even though desired program and time are set and start button is tapped CONDITION CHECK Ch...

Page 22: ...ds to magnetron terminal and magnetron body Continuity Defective magnetron 2 1 Check resistance of primary and secondary coil of high voltage transformer 0 or Defective high voltage transformer Replac...

Page 23: ...Check continuity of heater Defective heater No continuity Replace TROUBLE 5 1 Convection heater is not heated food will not become hot 2 Convection fan motor does no rotate CONDITION CHECK Check conti...

Page 24: ...lay does not count down or up with time cooking or clock operation 5 Oven is programmable and cooks normally but no display shows 6 Display obviously jumps in time while counting down 7 Display counts...

Page 25: ...or the water temperature to attain 20 C 2 C is measured The oven is then switched off and the final water temperature is measured within 60s NOTE 1 The water stirred is before its temperature is measu...

Page 26: ...binet 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...

Page 27: ...ading Meter with 6V 9V or higher voltage batteries should be used to check the front back resistance of the diode otherwise an infinite resistance may be read in both directions A normal diode s resis...

Page 28: ...I 4 COMBI 5 CONVECTION100 130 CONVECTION140 150 CONVECTION160 250 ONE CAKE BREAD TOUCH CRUSTY ROAST BEEF ROAST CHICKEN ROAST PORK BAKED FISH AUTO BAKED POTATO MODE BAKED POTATO ROAST POTATO FRESH VEGE...

Page 29: ...28 10 WIRING DIAGRAM...

Page 30: ...to 6 Disassembly and assembly 3 TOTAL ASSEMBLY A00 B00 F15 F17 F18 F56 F55 F19 F20 F21 F66 F23 F57 F58 F45 F46 F47 F48 F24 F25 F26 F27 F28 F41 F42 F43 F44 F40 F39 F63 F65 F64 F62 F14 F13 F12 F11 F61 F...

Page 31: ...700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 4 F21 3518118920 TRANS HV DT R11A0 1BT S 1 F22 4415A66600 SW MICRO VP 532A OF SPNC 187 200G 1 F23 3512718350 HARNESS MAIN KOC 924T9A 1 F24 3512767600 HARNESS CON...

Page 32: ...3601500 LAMP BL 125V 25W T25 C5A H187 1 F55 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 1 F56 3966821200 MOTOR SYNCRO 120V 60HZ 2W KX63MQ2AD 1 F57 3518003420 MAGNETRON RM228JFP 1 F58 7122401211 SCREW TA...

Page 33: ...uctuation of power source voltage 2 The allowable tolerance of the secondary voltage is within 5 of nominal voltage NOTE Each measure point must be measured with GND points Terminal 6 7 8 9 9 10 Volta...

Page 34: ...indicator in display comes on Cause RELAY 1 does not operate 3 When touching M W button oven lamp turn on and turns on and fan motor does not rotate but cook indicator in display comes on Cause RELAY...

Page 35: ...erate 5 Case of no heating of convection grill When touching CONVECTION button oven lamp turns on and Fan motor and turntable rotate and cook indicator in display comes on Cause RELAY 3 does not opera...

Page 36: ...peration the count down timer does not stop POINT STATE DOOR OPEN DOOR CLOSED A OPEN CLOSE B 5V DC GND CN1 1 2 D6 C1 5V R3 C2 3 R2 A B D O M SW CHECK NO METHOD REMEDY Check the stage ON OFF of the doo...

Page 37: ...36 13 P C B CIRCUIT DIAGRAM...

Page 38: ...CARBON FILM R12 1 6W 47K 5 RD AZ473J 1 29 R CARBON FILM R9 13 16 27 1 6W 100K 5 RD AZ104J 6 30 R CARBON FILM R4 1 6W 1M 5 RD AZ105J 1 31 R METAL FILM R8 1 4W 10K 1 RN 4Z1002F 1 32 R METAL FILM R10 1...

Page 39: ...686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC PRINTED DATE Feb 2003...

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