Service Manual
Contents
1. 3 One or more digits in the display are not on when they should be 4 Display 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 down noticeably too fast while cooking 8 Display does not show the time of day when clear button is touched 9 Oven lamp and turn table motor do not stop although cooking is finished Check if the RELAY RY4 contacts close and if they are close replace touch control circuit CONDITION CHECK RESULT CAUSE REMEDY Display does Check each button for Nome Maltunction of sub gt Replace not show continuity of the button pcb assembly control box programming sub assembly at all even if keyboard is touched TROUBLE 7 When ERROR 2 ERROR 3 come on display CONDITION CHECK RESULT CAUSE REMEDY ERROR 2 amp Check continuity of thermistor gt or infinite Replace Replace ERROR 3 resistance of thermistor come on ispl display Approx 200 300k room temperature gt i gt Check continuity of heater is pod Replace convection upper gt continuity Defective touch Replace control circuit 21 9 MEASUREMENT2. en ar ata Ngora gega aaa nana ener DA ag aa nga SANG ente 25 94 COMPONENT ACTION SUR SEES KERETA GAE AA DEN a NEG naga a 26 10 WIRING signs aan Nan 27 11 EXPLODED VIEW AND PARTS LIST 040686906 an6 0k anaa gun te na uwa wan anawa ne arinaa 28 11 1 DOOR ASSEMBLY T meti bere eade nia a Se anga anaa DER ng a wa ue ian da edie 28 11 2 CONTROL PANEL ASSEMBLY id eigens eo edite tee datae e Boe eL ence de tee 28 11 3 TOTAL ASSEMBLY u cen ei e deed le Re fei aoe edd dde ste Bea ect en fe e a ie d due fee 28 12 PRINTED CIRCUIT BOARD X 31 13 P C B CIRCUIT DIAGRAM u u u uuu uuu u THUQ 36 1 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 trained service personnel should make repairs 1 A broken door hinge A broken door viewing screen A broken front panel oven cavity A loosened door lock A broken door lock The door gasket
3. ANV 4 G oO 2 WA EM 4 610 AE 2 203 zz LOS E ud o E E 4 W ind gid 88 604 dza za 1 MS NO cor 90 iu Ho e ANN ro L 90 z io o LA IA O LI Ir 4 to Y eia 3 q NVa 78802055 S 2 ES 9AN pA 924 zi lt MK na amp 3 1 ANY 4 010 e s 3 0 1 1 SE d b NOXLIN VN RRR LAM cm ye PN d O 3 S INAH YI0NN madan ae 1 X B a ia 1 SNHOV MOIS LAN 2 dete 52 2 yung Aojay Bunoy 34 ASS Y PART LIST NO LOCATION PART CODE NAME SPECIFICATION 1 71 3515600100 BUZZER BM 20K 1 2 CA1 CN5XB 102M C ARRAY 6P 5 1000PF M 50V 1 3 EC1 CEXE1H100A C ELECTRO 50V RS 10uF 1 4 EC2 CEXF1E102V C ELECTRO 25V RSS 1000MF 1 5 CN1 3519150530 CONNECTOR WAFER YW396 03V 1 6 CN2 30166M5030 CONNECTOR WAFER MOLEX 35312 0310 1 7 CN3 4CW215SBD0 CONNECTOR WAFER HLEM15S 1 1 8 CN4 4CW3061MX0 CONNECTOR WAFER MOLEX 35328 0610 1 9 D1 16 DZN4148 DIODE RECTIFY 1N4148 16 10 D17 20 DZN4004A DIODE RECTIFY KN4004A 4 11 ZD1 DZUZ5R1BSB DIODE ZENER UZ 5 1BSB 1
4. 4 When checking the continuity of the switches fuse or high voltage tranformer disconnect one load wire from these parts and check continuity with the AC plug removed To do otherwise may result in a false reading or damage to your meter NOTE When electric parts are checked be sure the power cord is not inserted the wall outlet Check wire harness wiring and connection of the terminals and power cord before check the parts listed below TROUBLE 1 Oven does not operate at all any inputs can not be accepted CONDITION CHECK RESULT CAUSE REMEDY Fuse blows gt Check continuity of gt Continuity gt Malfunction of interlock monitor switch with Interlock door closed COMONO monitor switch COM lt NC gt No continuity Check continuity of Malfunction Replace primary an interlock switch Continuity interlock switch with door closed 9 Continuity Check continuity of gt Continuity gt Shorted contacts gt Beate primary interlock switch contact of primary with door partially open until interlock Switch interlock monitor switch contact close COM NC close Q or infinite gt Defective low m
5. AND TEST 1 MEASUREMENT 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 A cylindrical container of borosilicate glass is used for the test It has a maximum thickness of 3mm an external diameter of approximately 190mm and a height of approximately 90mm The mass of the container is determined At the start of the test the oven and the empty container are at ambient temperature Water having an initial temperature of 10 C 1 C is used for the test The water temperature is measured immediately before it is poured into the container 3 A quantity of 1000g 5g of water is added to the container and its actual mass obtained The container is then immediately placed in the centre of the oven shelf which is in its lowest normal position The oven is operated and the time for 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 measured NOTE 2 Stirring and measuring devices are to have a low heat capacity 4 The microwave power output is calculated from the formula P 4 187 mw T2 T1 0 55 2 To t where P the microwave power output in watts mw is the mass of the wa
6. KNOB VOLUME ABS SG 076OD SG 175 1 B08 PKMPMSYR00 PCB MAIN MANUAL AS KOC 9U0T7S 1 B09 PKBPMSYROO PCBBUTTON MANUALAS KOC 9U0T7S 1 3 4 5 6 7 8 9 Pull out the PCB button manual ASS Y 08 Pull out ten button from the control panel Pull out Window display B02 from the control panel Reverse the above steps for reassembly 12 1 Remove the screw which secure the control panel push up two snap fits and draw forward the control panel assembly 2 Remove screws which secure the PCB Main manual ASS Y B08 Pull out the Main PCB assembly B1 1 Remove screws which secure the PCB Button Manual 55 09 Pull out the Knob volume B07 from the Sub PCB assembly 6 To remove high voltage capacitor e 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 CAUTION Never install the magnetron without the metallic gasket plate which is packed with each magnetron to prevent microwave leakage Whenever repair work is carried out on magnetron check the microwave leakage It shall not exceed 4mW cm2 for a fully assembled oven with door normally
7. Replace primary winding of low voltage voltage transformer Approx transformer 5200 8700 normal Disconnect high voltage __ Fuseagain gt Defective gt Replace fuse and operate the unit blows high voltage transformer 17 CONDITION CHECK RESULT CAUSE REMEDY Outlethas Check continuity of No Defective Replace proper magnetron continuity magnetron voltage fuse does not blow yp Check continuity of noise filter No Defective line Replace board continuity filter board Check continuity of eee No Open power 3 Replace power supply cord continuity supply cord No Defective touch Replace continuity control circuit NOTE All these switches must be replaced at the same time please refer to 7 Interlock mechanism and adjust 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 RESULT CAUSE REMEDY Turntable Check continuity of No Malfunction of Adjust or motor and primary interlock switch continuity primary interlock replace
8. coil circuit Approx Faulty contacts of Replace 12V DC RELAY RY1 or open relay coil gt 000 gt Defective gt Replace 1 Check resistance of primary and secondary coil of high high voltage voltage transformer transformer Check continuity of filament inui gt Defective high gt Replace No continuity terminal of high voltage voltage transformer transformer 2 Check continuityof F No continuity Defective gt Replace magnetron heater with wires magnetron removed 19 TROUBLE 4 Grill heater upper heater is not heated food will not become hot CONDITION CHECK RESULT CAUSE REMEDY E Check continuity of No Malfunction of Adjust or erre e primary interlock switch Rd continuity primary Interlock replace not heated switch DOM switch continuity DOM switch replace Check continuity of No I Replace heater m continuity Defective heater Check D C voltage Lo OV m Defective touch R
9. oven lamp switch do not turn on HUE o Check continuity of Les No saa ap Adjust or D O M switch continuity replace 2d D O M switch Check D C voltage gt 9 Defective touch gt L Replace being supplied to control Circuit RELAY RYA coil gt Approx gt gt Fault contacts gt Replace 12V DC of RELAY 4 or open relay coil 18 TROUBLE 3 No microwave oscillation even though fan motor rotates CONDITION CHECK RESULT CAUSE REMEDY No gt Check continuity of gt Defective gt Replace microwave high voltage fuse continuity high voltage oscillation fuse microwave oscillation 3 Check continuity of gt Continuity gt Defective D high voltage capacitor terminals high voltage with wires removed transformer Check continuity of Continuity P pefectivehigh Replace gt high voltage rectifier in forward in backward voltage rectifier and backward direction direction with DC megger Connectmeggerleadsto Con nuiy Defective gt 2 gt gt magnetron terminal and magnetron magnetron body Check D C voltage gt OV gt Defective Replace being supplied to touch control RELAY RY1
10. 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 assemby NOTE After replacing the door assembly perform a check of correct alignment with the hinge and cavity front plate 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 3 To remove door parts REF NO PART CODE PART NAME DESCRIPTION REMARK 00 3511727210 DOOR AS 900 75 1 A01 3511714700 DOOR SEAL AS KOC 910K0S 1 A02 3513101200 HOOK POM 1 A03 3515102300 SPRING HOOK PW1 1 A04 3512209240 FRAME DOOR ABS XR 401 SR 0320 1 A05 3517010100 BARRIER SCREEN O TEMP GCASS T3 2 1 A06 3515204900 STOPPER HINGE T AS 1 0 05 1 07 3512302410 GASKET DOOR LUPOL 2300 1 1 Remove the gasket door from door plate 2 Remove the door frame from door plate 3 Remove the stopper hinge top from door plate 4 Remove the spring and the hook 5 Remove barrier screen outer from door frame 6 Reverse the above steps for reassembly 4 Method to reduce the between the door seal and the oven fro
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12. 2W 1 12 DP1 DTOF4422BM LED DISPLAY TOF 4422BMA B14 F 1 13 M287 3514331240 PCB MAIN 95 3X225 1 14 1 RA 86X104J R ARRAY 6P 5 1 8 100K OHM J 1 15 2 RA 85X104J R ARRAY 5P 4 1 8 100K OHM J 1 16 R1 8 RD AZ331J R CARBON FILM 1 6W 330 5 8 17 R11 19 21 27 RD AZ102J R CARBON FILM 1 6W 1K 5 4 18 R15 18 22 23 24 RD AZ472J R CARBON FILM 1 6W 4 7K 5 5 19 R14 RD AZ473J R CARBON FILM 1 6W 47K 5 1 20 R13 RD AZ103J R CARBON FILM 1 6W 10K 5 1 21 R16 17 RD AZ104J R CARBON FILM 1 6W 100K 5 2 22 R12 RD AZ105J R CARBON FILM 1 6W 1M 5 1 23 R10 RN AZ1002F R METAL FILM 1 6W 10K 1 1 24 R9 RN AZ1203F R METAL FILM 1 6W 120K 1 1 25 R26 RD 42510J R CARBON FILM 1 4W 51 5 1 26 R25 RD 42101J R CARBON FILM 1 4W 100 5 1 27 R28 29 RD 22270JS R CARBON FILM 1 2W 27 5 SMALL 2 28 CRI 5P4ROOMTS RESONATOR CERA CRT 4 00MS 1 29 VLI 1 7805 REGULATOR 7805 1 30 01 5 TZRA106M TRANSISTOR KRA106M 5 91 Q7 9 11 13 14 15 TZRC106M TRANSISTOR KRC106M 6 32 Q6 TZTA1266Y TRANSISTOR KTA 1266Y 1 33 Q8 10 12 TZTC3198GR TRANSISTOR KTC3198GR 3 34 2 5 CCZB1H102K CAPACITOR CERA 102 50V Z AXIAL 2 35 C1 3 4 7 CCZF1H104Z CAPACITOR CERA 104 50V Z AXIAL 4 36 C6 CCZF1H473Z CAPACITOR CERA 473 50V Z AXIAL 1 37 LVT1 041412 TRANS POWER DMR 621FS 1 38 J1 3 5 7 11 14 15 18 19 21 23 85801052GY WIRE COPPER 7 5 1 0 52 COATING 13 39 J4 6 8 10 12 13 16 20 85801052GY WIRE COPPER 10mm 1 0 52 TIN COATING 9 40 J17 85801052GY WIRE COPPER 12 5m
13. 9 3513003200 HOLDER HV CAPACITOR SECC T0 5 1 20 3518400400 DIODE HVR 1X 3AB 12KV 187 1 21 3518701900 FUSE HV 5KV 0 8A T H V 060T 1 F22 3515202800 STOPPER HINGE U AS KOR 121M0A 1 F23 3518123800 TRANS HV R1S59D 1500 1 24 35113A5QM5 CORD POWER AS 3X1 0 80X80 120 RTML 1 4 1 F25 3518003700 MAGNETRON 2M218JFL 6CF 1 26 3515308400 SUPPORTER WIRE SWRH D 2 0 1 27 3512527800 GUIDE AIR SECC T0 5 1 28 3518903800 THERMOSTAT OFF 160 ON 115 V 187 1 29 3512808100 HEATER 230 1350W TIANCHENG 1 F30 3512528600 GUIDE AIR OUTLET SA1D 80 0 5 1 1 3510810600 5 KOC 9U0T7S 1 2 3517211600 TRAY METAL AS KOC 9U0T7S 1 3517207310 TRAY RACK AS 1 0 05 30MM 1 28 12 PRINTED CIRCUIT BOARD CIRCUIT CHECK PROCEDURE 1 Low voltage transformer check The low voltage transformer is located on the P C B Measuring condition Input voltage 230V Frequency 50Hz 10 Terminal Voltage load Voltage no load 6 10 12 4 V AC 13 3 V NOTE 1 Secondary side voltage of the low voltage transformer changes in proportion to fluctuation of power source voltage 2 The allowable tolerance of the secondary voltage is within 5 of nominal voltage 2 Voltage Check Key check point NO CHECK POINT REMARK 1 2 3 4 5 2 15 5 ov E T 20 ms 50Hz 3 PIN 17 OR 18 5V 7 OV H E 250
14. APPING T1 BIN 4X8 MFNI 2 C04 3966222200 MOTOR SHADED POLE 01 1 C05 7001401211 SCREW MACHINE PAN M4XL12 MFZN 2 C06 3519900890 NUT HEX M4 2 C07 74001 3011 WASHER PW 1 3 MFZN 1 C08 3511800410 FAN CONVECTION SA1D 0 5 1 C09 7846300410 NUT HEX NUT FLANGE M3X0 7P MFZN 1 C10 7112400808 SCREW TAPPING T1 TRS 4X8 SUS 4 1 Remove four screws C10 from the cavity and pull out the Fan Convection Ass y 2 Remove a nut C9 and pull out the fan C08 and the washer C07 3 Remove two screw machines C05 along with two nuts C06 and pull out the motor shaded pole C04 4 Remove two screws and detach the supporter fan motor C02 from the cover fan convection C01 5 Reverse the above steps for reassembly 15 7 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 SWITCH MOUNT ING SWITCH MOUNTING BRACKET BRACKET PRIMARY PRIMARY INTERLOCK SWITCH INTERLOCK SWITCH INTERLOCK U INTERLOCK MONITOR SWITCH MONITOR SWITCH DOOR LATCH DOOR LATCH DON SWITCH DOW SWITCH CONDITION DOOR OPEN CONDITION DOOR CLOSE 1 Primary interlock switch When the door is closed th
15. LE OF CONTENTS 1 SAFETY bEiieiuuv c 2 2 L T M M kan agya andana gagana naa dagan an agan ae nak b gaga akan 3 3 EXTERNAL VIEW iu A ag a pang napa oa ngan asun a aga nanang an nigas ndan angatag nan ER aee asa GEN aeii Esin iiet 4 3 1 OUTER 2250 au tet ce aqa a Gage 4 3 2 FEATURE DIAGRAM ua u sa nette it ettet Eo De Dee ER Dr t od d 5 4 INSTALLAT ON uka qua a Ga a ah kaga daa Bag Ng Ega Sega an aan a akin ga nak ga 6 5 cel gie Liu 7 6 DISASSEMBLY AND ASSENBLY U U u nnne tate tnam strana u uuu uuu 8 7 INTERLOCK MECHANISM AND 5 4 4 4 1 1 1 11 nn ntn tnn tn neman anan nenen uuu u 17 8 TROUBLE SHOOTING GUIDE aan aamen 18 9 MESUREMENT AND 23 9 1 MEASUREMENT OF THE MICROWAVE POWER 22 24 42 40 1 10 0 11 11 000 001000000 0000 23 9 2 MICROWAVE RADIATION 22 44220 4 0 211200 0000001 000 05 0000000000000000 24 9 3 COMPONENT TEST PROCEDURE
16. S M No 06909077501 service Manual Microwave Oven Model KOC 9U0T7S 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 DAZWOO ELECTRONICS Mar 2008 PRECAUTIONS OBSERVED DURING SERVICING 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 microwave source and make repairs if necessary 1 Interlock operation 2 Proper door closing 3 Seal and sealing surfaces arcing wear and other damage 4 Damage to or loosening of hinges and latches 5 Evidence of dropping or abuse c Before turning on power to the microwave oven for any service test or inspection within the microwave generating compartments check the magnetron wave guide or transmission line and cavity for 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 adjusted by procedures described in this manual before the oven is released to the owner TAB
17. aker and glass thermometer 100 C 212 F 2 Pour 275cc 15cc of tap water initially at 20 5 C 68 9 F the 600 cc glass beaker with an inside diameter of approx 95 mm 3 5 in 3 Place it at the center of the tray and set it in a cavity AB Close the door and operate the oven 5 Measure the leakage by using Microwave Energy Survey Meter with dual ranges set to 2450 2 1 Measured radiation leakage must not exceed the value prescribed below Leakage for a fully assembled oven with door normally closed must be less than 4mW Cm2 2 When measuring the leakage always use the 5 cm 2 in space cone with probe Hold the probe perpendicular to the cabinet and door Place the space cone of the probe on the 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 door seem is unknown move the probe more slowly 4 When measuring near a corner of the door keep the probe perpendicular to the areas making sure the probe end at the base of the cone does not get closer than 2 in from any metal If it does not erroneous reading may result 23 3 TEST PROCEDURE High voltage is present at the high voltage terminal of the high voltage transformer during any cooking cycle tis neither necessary n
18. assembly 3 TOTAL ASSEMBLY F30 27 Caution In this Manual some parts can be changed for improving their performance without notice 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 NO PARTS_CODE PARTS_NAME PARTS_DESCR PQTY 00 3511727210 DOOR AS KOC 9U0T7S 1 00 PKCPSWYROO CONTROL PANEL AS KOC 9U0T7S 1 C00 3511801300 FAN CONVECTION AS KOC 9U0T7S 1 D00 3512529000 GUIDE WIND AS KOC 9U0T7S 1 F01 3516207410 CAVITY AS KOC 9U0T7S 1 F02 3511408300 COVER WAVE GUIDE MICA T0 35 1 F03 3517501100 COVER LAMP PET 0 1 1 F04 3517413600 COUPLER CERAMIC 1 F05 3966831010 MOTOR SYNCRO SSM 16H 230V 50HZ 3RPM STEEL 1 F06 3512808110 HEATER 230V 550W TIANCHENG 1 F07 3514801400 SENSOR TEMPERATURE PTM K312 D7 1 F08 3512783310 HARNESS MAIN KOC 9U0T7S 1 F09 3513820500 LOCK PP 1 F10 3513700800 LEVER LOCK POM 1 11 3513702100 LEVER SW MICRO POM KOG 846T0S 1 12 4415 17352 SW MICRO VP 533A OF SPNO 187 200G 1 F13 4415A66910 SW MICRO VP 531A OF SZM V16 FA 61 2 F14 3513601600 LAMP BL 240V 25W 25 187 1 F15 3518903400 THERMOSTAT OFF 150 ON 60 V 187 1 F16 3510313620 BASE SBHG T0 65 1 F17 3512101400 FOOT DASF 310 4 F18 3518303401 CAPACITOR HV 2100VAC 1 05UF 187 1 F1
19. ating in DEFROST mode Auto cook When blinking the oven is operating in AUTO COOK mode Convection When blinking the oven is operating in CONVECTION mode gram When blinking the oven is operating in weight input mode 2 Combi Used to select combi mode 3 Defrost Used to defrost foods 4 MW Used to set power level of the microwave 5 Clock Used to set clock 6 Grill Used to select grill mode 7 Auto cook Used to cook or reheat Convection Used to select convection mode and selected temp 9 Dial knob Used to set time weight and quantity START SPEEDY COOK Used to start a program or a speedy start each press adds 30 seconds of microwave cooking time 1 STOP CLEAR Used to stop the oven operation or to delete the cooking data PIZZA Used to cook pizza B STEAM CLEANING Used to clean the inside of the oven 6 DISASSEMBLY AND ASSEMBLY Cautions to be observed when trouble shooting 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 danger from a short circuit You are asked to observe the following precautions carefully 1 Always remove the power plug from the outlet before servicing 2 Use an insulated screwdriver and wear rubber gloves when servicing the high
20. closed Metallic Magnetron Wave guide Magnetron antenna antenna SU p X A Filament terminal lt MAGNETRON gt Metallic gasket plate 13 8 To remove wind guide assembly 1 Remove a screw for earthing 2 Remove the noise filter from the wind guide 3 Remove a screw which secure the 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 steps for reasembly 9 To remove H V transformer 1 Remove four screws holding the H V transformer 2 Remove the H V transformer 3 Reverse the above steps for reassembly 14 Caution In this Manual some parts 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 10 To remove Rear heater assembly parts C03 C07 C09 C10 REF NO PART CODE PART NAME DESCRIPTION Q TY REMARK C00 3511801300 FAN CONVECTION AS KOC 9U0T7S 1 C01 3511414200 COVER FAN CONVECTION SA1D80 0 5 1 C02 3515309600 SUPPORTER FAN MOTOR SBHG 0 6 1 C03 7113400814 SCREW T
21. current This appliance is equipped with a cord having a earthing wire with a earthing plug The plug must be plugged into an outlet that is properly installed and earthed WARNING Improper use of the earthing plug can result in a risk of electric shock Consult a qualified electrician of serviceman if the earthing instructions are not completely understood or if doubt exists as to whether the appliance is properly earthed and either If itis necessary to use an extension cord use only a 3 wire extension cord that has a 3 blade earthing plug and a 3 slot receptacle that will accept the plug on the appliance The marked rating of the extension cord should be equal to or greater than the electrical rating of the appliance or Do not use an extension cord 5 CONTROL PANEL 1 Roast pork 2 Roast beef 3 Roast chicken 4 Baked fish 5 Fresh vegetable KO Defrost S Clock Steam cleaning T START Speedy cook e 9 c 9 n D Display Cooking time power level program indicators and present time are displayed MW m When blinking the oven is operating in MICROWAVE mode Grill amp When blinking the oven is operating in GRILL mode Combi 4 When blinking the oven is operating in COMBI mode Defrost x4 When blinking the oven is oper
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23. e Microwave Power Output Continuity checks can only indicate and open filament or a shorted magnetron To diagnose for an open filament or a shorted magnetron 1 Isolate magnetron from the circuit by disconnecting the leads 2 A continuity check across magnetron filament terminals should indicate 0 10 or less 3 A continuity check between each filament terminal and magnetron case should read open 5 Fuse If the fuse in the primary and monitor switch circuit is blown when the door is opened check the primary and monitor switch before replacing the blown fuse In case the fuse is blown by an improper switch operation replace the defective switch and fuse at the same time Replace just the fuse if the switches operate normally 24 4 COOKING MODE MAGNE UPPER LOWER CONVEC TRON ELEMENT ELEMENT TION FAN M W MANUAL GRILL ROAST nora E MODE ROAST CHICKEN BAKED FISH e e FRESH VEGETABLES e CHILLY PIZZA e e e e PIZZA FROZENPIZZA e e e e FRESH PIZZA e e e e STEAM CLEANING 25 10 WIRING DIAGRAM QILD DOR OF 26 11 EXPLODED VIEW AND PARTS LIST 1 DOOR ASSEMBLY Refer to 6 Disassembly and assembly 2 CONTROL PANEL ASSEMBLY Refer to 6 Disassembly and
24. e hook locks the oven door If the door is not closed properly the oven will not operate When the door is closed the hook pushes the button of the microswitch Then the button of the primary interlock switch bring it under ON condition No position 2 DOM switch and interlock monitor switch When the door is 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 No position and presses the button of the DOM switch to bring it under ON condition No position ADJUSTMENT Interlock monitor switch When the door is closed the interlock monitor switch should be opened No position before other switches are closed When the door is opened the interlock monitor switch should be closed No position after other switches are opened 3 Adjustment steps a Loosen the one mounting screw b Adjust interlock switch assembly position c Make sure that lock lever moves smoothly after adjustment is completed d Tighten completely two mounting screws NOTE Microwave emission test should be performed after adjusting interlock mechanism If the microwave emission exceed 4mW cm2 readjust interlock mechanism 16 8 TROUBLE SHOOTING 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
25. eplace being supplied to control circuit RELAY RY2 coil gt Approx gt Faulty contacts of Replace 12V DC RELAY RY2 or open relay coil TROUBLE 5 1 Convection heater is not heated food will not become hot 2 Convection fan motor does no rotate CONDITION CHECK RESULT CAUSE REMEDY nui Malfunction of Adjust or 1 Convection _ Check continuity of heater is not primary interlock switch continuity primary Interlock replace heated switch 2 Convection j fan and Check continuity of y No L Malfunction of Adusi ot motor does DOM switch continuity not rotate Switc Check continuity of No Defective heater Replace heater or motor gt continuity 3 or motor Check D C voltage gt 0V m i Defective touch Replace being supplied to control circuit RELAY RY3 RY6 coil gt gt Faulty contacts of Replace 12V DC RELAY RY3 RY6 or open relay coil 20 TROUBLE 6 The following visual conditions inditions indicate probable defective touch control Circuit or button P C B assembly Incomplete segments 1 segment missing 2 partial segments missing 3 digit flickering other than normal fluorescent slight flickering 2 A distinct change in the brightness of one or more numbers exists in the display
26. hing GRILL or COMBI button oven lamp turns on and fan motor and turntable rotate and cook indicator in display comes on Cause RELAY 2 does not operate B RY2 l 21 R26 UPPER HEATER EC E 08 D Q8 STATE POINT A POINT B RELAY 2 ON 5V DC GND RELAY 2 OFF GND 12V DC 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 operate RYS 5 22 R25 STATE POINT A POINT B RELAY 3 ON 5V DC GND RELAY 3 OFF GND 12V DC 32 6 Case of no stopping of the count down timer When the door is opened during operation the count down timer does not stop A 3 VI Vi B CN 2 O R15 06 1 gt ANN 30 ROS D O M SW R14 Q6 RIS C3 lt 77 POINT A B STATE DOOR OPEN OPEN 5V DC DOOR CLOSED CLOSE GND CHECK NO METHOD REMEDY Check the stage ON OFF of the door open 1 monitor switch by resistance Replace door open monitor swith measurement 33 13 PC B CIRCUIT DIAGRAM OLY L LOLN3 2 AMV 1015 v lt E r4 r1 uiua i
27. m 1 0 52 TIN COATING 1 41 1 55 0101121 SW RELAY G5G 1A DC12V 1 42 RY2 5SC0101123 SW RELAY G5G 1A DT DC12V 1 43 RY3 RY6 560101128 SW RELAY CS11 12SH 1C 1P 4 35 NO LOCATION PART CODE NAME SPECIFICATION QTY 44 GMS 8252402 IC MICOM GMS82524 OTP 1 45 IC2 1K1A7033AP IC RESET KIA7033AP 1 46 101 4CW215RBD0 CONN WAFER HLEM15R 1 1 47 288 3514331340 PCB SUB 95 3X215 1 48 R101 R102 RD AZ102J RESISTOR 1 6W 1K 5 2 49 101 5510302005 SW ROTARY EC12E24204A8 1 50 SW101 SW111 5S50101Z93 SW TACT KPT 1115AM 11 51 J105 85801052GY WIRE COPPER 7 5mm 1 0 52 TIN COATING 1 52 J101 102 104 106 85801052GY WIRE COPPER 10mm 1 0 52 TIN COATING 4 53 J103 85801052GY WIRE COPPER 12 5mm 1 0 52 TIN COATING 1 54 WF1 WSJ 159007 WIRE FLAT 1 25X15X90XC 1 36 SM NO OG DAZWNOO ELECTRONICS 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 Mar 2008 ABOUT THIS MANUAL VISION CREATIVE INC M2 Sols 07 84945 d etd TEL MODEL KOC 9UOT7S S M amp 40 a 2008 03 21 6 At 22 7 8 34 8x 9z 52 105 olay 08 08 21 8 4 xt 40 08 03 24 5p 27 8 amp 2p 08 03 26 17 18 19 20 29 30p 31p 32p 33p 34p 35 FE 2p 4
28. ns 4MHz Check method NO MEASURE POINT WAVE FORM REMEDY REMARK 1 1 DC 5Vx 596 Replace VL1 EC1 C4 C5 NO LOAD 2 MP2 DC 12V 2096 Replace 017 20 EC2 R28 R29 D15 D7 NO LOAD NOTE Each measure point must be measured with GND points 29 MEASUREPOINT 3 Case of no microwave oscillation 1 When touching M W button oven lamp turns on and Fan motor and turntable rotate and cook indicator in display comes on Cause RELAY 1 does not operate B RY1 J MAGNETRON D7 4 20 R27 ka R25 NW RY5 D12 4 AAN 9 R26 STATE POINT A POINT B RELAY 1 ON 5V DC GND RELAY 1 OFF GND 12V DC in display comes on Cause RELAY 4 does not operate 2 When touching M W button oven lamp does not turn on and turntable motor does not rotate but cook indicator B RY4 LAMP TRAY __ RELAY 4 ON 45V DC GND RELAY 4 OFF GND 12V DC display comes on Cause RELAY 5 does not operate 3 When touching M W button oven lamp turns on and fan motor does not rotate but cook indicator in 20 R27 B R5 I ple 29 R06 FAN 9 R26 STATE POINT A POINT B RELAY 5 ON 5V DC GND RELAY 5 OFF GND 12V DC 31 4 Case of no heating of top grill When touc
29. nt 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 seal to oven front surface Tighten two screws 2 To reduce gap located on part B Loosen two screws stopper hinge under and then push the door to contact the door seal to oven front surface Tighten two screws B G i Sa ar an ce ra ae oe pan aaa NOTE A small gap may be acceptable if the microwave leakage does not exceed 4mW cm2 sO 11 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 5 To remove control panel parts REF PART CODE PART NAME DESCRIPTION Q TY REMARK PKCPSWYR00 CONTROL PANEL AS KOC 9U0T7S 1 B01 3516736500 CONTROL PANEL ABS SG 0760D 56 175 1 B02 3515503000 WINDOW DISPLAY SAN 1 B03 3516916800 BUTTON FUNCTION A ABS SG 0760D 56 175 1 B04 3516916900 BUTTON FUNCTION B ABS SG 0760D 56 175 1 B05 3516917000 BUTTON FUNCTION C ABS SG 0760D SG 175 1 B06 3516917100 BUTTON FUNCTION D ABS SG 0760D SG 175 1 B07 3513409310
30. or advisable to attempt measurement of the high voltage Before touching any oven components or wiring always unplug the oven from its power source and discharge the capacitor 1 High voltage transformer 1 Remove connections from the transformer terminals and check continuity 2 Normal readings should be as follows Secondary winding Approx 1710 31096 Filament winding Approx 00 Primary winding Approx 1 7 Q 2 High voltage capacitor 1 Check continuity of capacitor with meter on the highest OHM scale 2 A normal capacitor will show continuity for a short time and then indicate 10M O once the capacitor charged A shorted capacitor will show continuous continuity An open capacitor will show constant 10MO Resistance between each terminal and chassis should be infinite 3 4 5 3 High voltage diode 1 Isolate the diode from the circuit by disconnecting the leads 2 With the 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 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 resistance will be infinite in one direction and several hundred k the other direction 4 Magnetron For complete magnetron diagnosis refer to Measurement of th
31. plate and oven cavity surface should be kept clean No grease soil or spatter should be allowed to build up on these surfaces or inside the oven DO NOT ATTEMPT TO OPERATE THIS APPLIANCE WITH THE DOOR OPEN The microwave oven has concealed switches to make sure the power is turned off when the door is opened Do not attempt to defeat them DO NOT ATTEMPT TO SERVICE THIS APPLIANCE UNTIL YOU HAVE READ THIS SERVICE MANUAL 2 FOR SAFE SERVICE PROCEDURES 1 If the oven is operative prior to servicing a microwave emission check should be performed prior to servicing the oven 2 If any certified oven unit is found to servicing a microwave emission check should be performed prior to servicing the oven 1 inform the manufacturer importer or assembler 2 repair the unit at no cost to the owner 3 attempt to ascertain the cause of the excessive leakage 4 tell the owner of the unit not to use the unit until the oven has been brought into compliance 3 If the oven operates with the door open the service person should tell the user not to operate the oven and contact the manufacturer immediately 2 3 4 5 IMPORTANT The wire in this mains lead coloured in accordance with the following code Green and yellow Earth Blue Neutral Brown Live As the colours of the wires in the mains lead of this appliance may not correspond with the coloured markings identifying the terminals in your plug proceed as follows The wire which i
32. r is opened while oven is operating the magnetron will immediately stop operating 2 DOOR VIEWING SCREEN Allows viewing of food The screen is designed so that light can pass through but not the microwave 3 METAL RACK 4 TOP HEATER Turns on when convection grill and combi cooking is selected 5 BOTTON HEATER Turns on when convection grill and combi cooking is selected 6 OVEN LAMP Automatically turns on during oven operating 7 SAFETY INTERLOCK SYSTEM 8 CONTROL PANEL 9 Metal Tray Put food or appropriate cookware directly on the metal tray and place on the glass turntable and then place on the roller guide when using convection cooking combination cooking auto cooking or grill cooking 10 COUPLER This fits over the shaft in the center of the ovens cavity floor This is to remain in the oven for all cooking 11 CONVECTION OUTLET amp FAN 12 OVEN FRONT PLATE 13 DOOR SEAL Door seal maintains the microwave energy within the oven cavity and prevents microwave leakage 4 INSTALLATION _ Steady flat location This microwave oven should be set on a steady flat surface This microwave oven is designed for counter top use only Leave space behind and side All air vents should be kept a clearance If all vents are covered during operation the oven may overheat and eventually cause failure Away from Radio and TV sets Poor television reception and radio interference may result if the oven is loca
33. s coloured green and yellow must be connected to the terminal in the plug which is marked with the letter E earth symbol or coloured green and yellow The wire which is coloured blue must be connected to the terminal which is marked with the letter coloured black The wire which is coloured brown must be connected to the terminal which is marked with the letter L coloured red NOTE This oven is designed for counter top use only 2 SPECIFICATIONS MODEL KOC 9U0T7S POWER SUPPLY 230V 50Hz SINGLE PHASE WITH EARTHING MICROWAVE 1500W POWER GRILL 1950W CONSUMPTION CONVECTION 1950W COMBINATION 1950W MICROWAVE ENERGY OUTPUT 900W IEC 705 MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS W X D X H 542X438X329mm 21 5X17 2X13 in CAVITY DIMENSIONS W X D X H 350X367X240mm 13 8X14 4X9 4 in NET WEIGHT Approx 18 2Kg 40 1 Ibs TIMER 60 minutes FUNCTION SELECTIONS Microwave Grill Convection Combination POWER SELECTIONS 10 LEVELS CAVITY VOLUME 1 1 Cu Ft SPECIFICATION ARE SUBJ ECT TO CHANGE WITHOUT NOTICE 3 EXTERNAL VIEW 1 OUTER DIMENSION 2 FEATURE DIAGRAM gt 1 DOOR HOOK When the door is closed it will automatically lock shut If doo
34. ted close to a TV Radio antenna or feeder and so on Position the oven as far from them as possible Away from heating appliances and water taps Keep the oven away from hot air steam or splash when choosing a place to position it or the insulation might be adversely affected and breakdowns occur Power supply Check your local power source This microwave oven requires a current of approximately 8 5 amperes 230V 50Hz Power supply cord is about 1 0 meters long voltage used must be the same as specified on this oven Using a higher voltage may result in a fire or other accident causing oven damage Using low voltage will cause slow cooking We are not responsible for damage resulting from use of this oven with a voltage of ampere fuse other than those specified This appliance is supplied with cable of 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 Examine the oven after unpacking for any damage such as A misaligned door broken door or a dent in cavity If any of the above are visible DO NOT INSTALL and notify dealer immediately Do not operate the oven if it is colder than room temperature EARTHING INSTRUCTIONS This appliance must be earthed In the event of an electrical short circuit earthing reduces the risk of the electric shock by providing an escape wire for the electric
35. ter in grams is the mass of the container in grams To is ambient temperature in degrees Celsius T1 is the initial temperature of the water in degree Celsius T is the final temperature of the water in degrees Celsius t is the heating time in seconds excluding the magnetron filament heating up time The microwave power output is stated in watts rounded off to the nearest 50W CAUTION 1 Water load should be measured exactly to 1 liter 2 Input power voltage should be exactly specified voltage Refer to SPECIFICATIONS 3 Ambient temperature should be 20 2 C 68 3 6 F Heating time for power output To A second 70 64 60 56 52 49 47 44 42 40 38 W 600 650 700 750 800 850 900 950 1000 1050 1100 22 2 MICROWAVE RADIATION TEST WARNING 1 Make sure to check the microwave leakage before and after repair of adjustment 2 Always start measuring of an unknown field to assure safety for operating personnel from microwave energy 3 Do not place your hands into any suspected microwave radiation field unless the safe density level is known 4 Care should be taken not to place the eyes in direct line with the source of microwave energy 5 Slowly approach the unit under test until the radiometer reads an appreciable microwave leakage from the unit under the test PROCEDURE Prepare Microwave Energy Survey Meter 600cc glass be
36. voltage side 3 Discharge the high voltage capacitor before touching any oven components or wiring 1 Check the grounding Do not operate on a two wire extension cord The microwave oven is designed to be used while grounded It is imperative therefore to make sure it is grounded properly before beginning 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 replacing or checking parts short between oven chassis and the negative high terminal of the high voltage capacitor by using a properly insulated screwdriver to discharge 4 When the fuse is blown out due to the operation of the monitor switch replace primary interlock switch secondary interlock switch and interlock monitor switch 5 After repair or replacement of parts make sure that the screws are properly tightened and all electrical connections are tightened 6 Do not operate without cabinet CAUTION Service personnel should remove their watches whenever working close to or replacing the magnetron WARNING When servicing the appliance take care when touching or replacing high potential parts because of electrical shock or exposing microwave These parts are as follows HV Transformer Magnetron HV Capacitor HV Diode 1 To remove cabinet 1 Remove four screws on cabinet back 2 Push
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