DAEWOO ELECTRONICS CORP.
Contents
1. TROUBLE 4 Grill heater upper heater is not heated food will not become hot CONDITION CHECK RESULT CAUSE REMEDY R Check continuity of No Malfunction of Adjust or AM primary interlock switch PEG continuity primary Interlock not heated switch DOM switch continuity DOM switch replace Check continuity of No Replace heater m gt continuity Defective heater Check D C voltage r 0 Defective touch 1 Replace being supplied to control circuit RELAY RY2 coil gt Approx gt Faulty contacts of gt Replace 24V 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 iem Malfunction of Adjust or 1 Convection _ Check continuity of L gt No L j heater is not primary interlock switch continuity primary Interlock replace heated switch 2 Convection gt j fan and Check continuity of No Malfunction of Adjust kj motor does continuity replace not rotate POM SI DOM switch Check continuity of No Defective heater Replace heater or motor gt continuity or motor Check D C voltage gt 0V P Defective touch 7 Replace being supplied to control circuit RELAY RY3 RY6 coil gt Approx gt Faulty contacts of 3 Replace 24 RELAY RY3 RY6 or open relay 21 TROUB2. MODEL KOC 8H4T7S POWER SUPPLY 230V 50Hz SINGLE PHASE WITH EARTHING MICROWAVE 1400W POWER GRILL 850W CONSUMPTION CONVECTION 1850W COMBINATION 2500W MICROWAVE ENERGY OUTPUT 900W IEC 705 MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS W X H X D 501X485 8X319mm 19 7X19 1X12 6 in CAVITY DIMENSIONS W X H X D 310X320X229mm 12 2X12 6X9 in NET WEIGHT Approx 18Kg 39 6 Ibs TIMER 60 minutes FUNCTION SELECTIONS Microwave Grill Convection Combination POWER SELECTIONS 10 LEVELS CAVITY VOLUME 0 83 Cu Ft SPECIFICATION ARE SUBJECT TO CHANGE WITHOUT NOTICE 3 EXTERNAL VIEW 1 OUTER DIMENSION 2 FEATURE DIAGRAM nanoaaa o 1 DOOR HOOK When the door is closed it will automatically lock shut If door 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 microwawe 3 METAL RACK 4 TOP HEATER Turns on when conveciion grill and combi cooking is selected 5 OVEN LAMP Automatically turns on during oven operating 6 SAFETY INTERLOCK SYSTEM 7 CONTROL PANEL 8 Glass Turntable Turntable Center the tray on the roller guide when using the microwave features Place food or microwave safe cookware directly on the glass turntable NOTE Glass Turntable
3. gt No continuity gt Check continuity of gt Malfunction of Replace primary an interlock switch Continuity interlock switch with door closed gt Continuity Check continuity of gt Continuity gt Shorted contacts primary interlock switch contact of primary with door partially open until interlock Switch interlock monitor switch contact close COM close or infinite Replace Check continuity of Defective low primary winding of low voltage voltage transformer Approx transformer 4800 6200 normal Disconnect high voltage _ Fuseagaln Defective Replace fuse and operate the unit blows high voltage transformer 18 CONDITION CHECK RESULT CAUSE REMEDY Outlethas Check continuity of 3 No i Defective i Replace proper magnetron continuity magnetron voltage fuse does not blow gt Check continuity of noise filter No Defective line Replace board continuity filter board FA Check continuity of Openpower Replace power supply 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 lnterlock mechanism and adjust for adjustment instructions TROUBLE 2 Display sh
4. ROAST BEEF AUTO MODE ROAST CHICKEN BAKED FISH FRESH VEGETABLES 26 10 WIRING DIAGRAM Ps A MOON 2 TAM QON hya gt up WON 10 km D A 80 0 809 000 wa A qu W 11 pudo A1 PY m a a C ESO U ZH 318 401 n m eM 2 REJ RPA By us ora M a 1 m NN RP LES roils Ko NSE SE m I I E L m a W GO M 3sni NB 9242004 Syd wwa TONS ats Q O W anms wdddnkdnkS s ANYANA 27 11 EXPLODED VIEW AND PARTS LIST 1 DOOR ASSEMBLY Refer to 6 Disassembly and assembly 2 CONTROL PANEL ASSEMBLY Refer to 6 Disassembly and assembly 3 TOTAL ASSEMBLY 28 w 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 NO PART CORD PART NAME DESCRIPTION QTY 1 3516118500 CAVITY AS KOC 8H5T7S 1 2 3511403800 COVER WAVE GUIDE MICA T0 35 1 3 3517400610 COUPLER TEFLON 1 4 3966031700 MOTOR
5. R32 1 2W 200 5 RD 22201J5 6 24 R CARBON FILM R2 1 4W 6 8 5 RD 42689J 1 25 R CARBON FILM R13 R21 R24 1 6W 4 7 5 RD AZ472J 3 26 R CARBON FILM R3 R11 R12 R14 R25 R33 R22 R23 1 6W 1K 5 RD AZ102J 8 27 R CARBON FILM R9 R7 1 6W 10K 5 RD AZ103J 2 28 R CARBON FILM R5 R10 1 6W 47K 5 RD AZ473J 2 29 R CARBON FILM R1 R6 R17 R18 R19 R20 1 6W 100K 5 RD AZ104J 6 30 R CARBON FILM R8 1 6W 1M 5 RD AZ105J 1 31 R CARBON FILM R16 1 4W 10K 1 RN 421002F 1 32 R CARBON FILM R15 1 4W 120K 1 RN 421203F 1 33 RESONATOR CERA 1 CRT4 00MS 5PAROOMTS 1 34 IC MICOM GMS81C2020A 150G2020A 1 35 IC IC2 KIA7033AP 1K1A7033AP 1 36 TRANSISTOR Q2 KTA 1266Y TZTA1266Y 1 37 TRANSISTOR 01 04 05 07 09 012 KRC 106M TZRC106M 8 38 TRANSISTOR Q3 06 08 KTC 3198GR TZTC3198GR 3 39 TRANS POWER LVT1 DMR 210FS 5EPV041410 1 40 SW RELAY RY1 3 G5G 1A DT 1C DC24V 5500101124 3 41 SW RELAY RY4 6 CS11 24SH 1C 1P 5500101129 3 42 WIRE COPPER 7 5mm J1 J3 J4 J10 J11 J12 J19 21 1 0 52 TINCOATING 85801052GY 13 J23 J24 J26 J27 43 WIRE COPPER 10 mm J2 J9 J14 18 J22 J28 32 1 0 52 TIN COATING 85801052GY 13 44 WIRE COPPER 12 5mm J5 J8 J13 J25 1 0 52 TINCOATING 85801052GY 6 37 NO NAME SYMBOL SPECIFICATION PART CODE REMARK 45 WIRE FLAT WF1 15 90 WH C WSJ 159007 1 46 WIRE COPPER SJ5 SJ7 SJ8 1 0 52 TIN COATING 858010522 3 47 PCB SUB M269 93x212 3514331310
6. 1 48 CONNECTOR FILM CN101 HLEM15R 1 4CW215RBDO 1 49 SW SW101 110 KPT 1115AM 5550101293 10 50 SW ROTARY SW111 EC12E24204A8 5510302005 1 51 WIRE COPPER 10mm _ J103 1 0 52 TIN COATING 85801052GY 1 52 WIRE COPPER 12 5 J101 J102 1 0 52 TIN COATING 85801052GY 2 38
7. SYNCRO 220 240V 50 60HZ SM16 HK36M6F6 1 5 7121400611 SCREW TAPPING 25 PAN 4X6 MFZN 1 6 3514801600 SENSOR TEMPERATURE MWS DWM 0010 0 1 7 75422 4081 SCREW SPECIAL TT3 TRS 4X8 SE MFZN 1 8 3512782620 HARNESS MAIN KOC 8H5T7S 1 9 3513811750 LOCK CHEIL FH 44N 1 10 3513702620 LEVER LOCK POM 1 11 4415 17352 SW MICRO VP 533A OF SPNO 187 200G 1 12 4415 66910 SW MICRO VP 531A OF SZM V16 FA 61 1 13 3518571000 SWITCH PUSH MP101C 1 14 3513601600 LAMP BL 240V 25W 25 C7A H187 1 15 3510311000 BASE SBHG 1 0 7 1 16 3512101400 FOOT DASF 310 4 17 3518303401 CAPACITOR HV 2100VAC 1 05UF 187 1 18 3513001900 HOLDER HV CAPACITOR SECC 0 8 1 19 3518401300 DIODE HV CL01 12 1 20 7272400811 SCREW TAPTITE TT3 TRS 4X8 MFZN 1 21 3518701400 FUSE HV 5KV 0 7A 1 22 3515202800 STOPPER HINGE U AS KOR 121M0A 1 23 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 5 24 3518122800 TRANS HV R15592 500 1 25 3516003700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 4 26 PKCPSWGGO00 CONTROL PANEL AS KOC 8H4T7S 1 27 3515305000 SUPPORTER WIRE SWRH MFZN 1 28 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 1 29 3511726410 DOOR AS KOC 8H4T7S 1 30 3516003700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 2 31 3512524100 GUIDE WIND PP GP 3152F FH44N NC 1 32 3963512320 MOTOR SHADED POLE 230V 20W MW10CA M03 1 33 7121402511 SCREW TAPPING T2S PAN 4X25 MFZN 2 34 3511800300 FAN PP 30 GLASS 1 35 3518606100 NOISE FILTER DWLF M13 1 36 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 1 37 35113A5QJ5 CORD POWER AS 3X1 5 80X80 120 R
8. door from door frame 7 8 9 10 11 Reverse the above steps for reassembly 10 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 seal to oven front surface Tighten two screws 2 To reduce gap located on part Loosen two screws on stopper hinge under and then push the door to contact the door seal to oven front surface Tighten two screws ua uL EE a ag ge E I E xil NOTE A small gap may be acceptable if the microwave leakage does not exceed 4mW cm 11 w 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 1 i i i i i i i i i i i i i i i i i i 1 1 1 i i i i i i i i A i i i i i i i i i i i i NG i x l 1 3 5 0 h 4 0 Q i a ER i i REF PART CODE PART NAME DESCRIPTION QTY REMARK B01 3516734500 CONTROL PANEL ABS SG 0760D SG 175 1 B02 3511616200 DECORATOR C PANEL STS430 T
9. is touched TROUBLE 7 When ERROR 2 ERROR 3 come on display CONDITION CHECK RESULT CAUSE REMEDY ERROR 2 amp Check continuity of thermistor or infinite Replace Replace ERROR 3 resistance of thermistor come on displ 200 300 temperature gt i gt Check continuity of heater 2 Replace convection upper ee pars gt gt continuity Defective touch Replace control circuit 22 9 MEASUREMENT AND TEST 1 MEASUREMENT OF 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 oylindrical 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 1 C is used for the test The water temperature is measured immediately before it is poured into the container 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 fo
10. is atteched to the right cushion 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 ROLLER GUIDE This must always be used for cooking together with the turntable tray 11 COUPLER This fits over the shaft in the center of the ovens cavity floor This is to remain in the oven for all cooking 12 CONVECTION OUTLET amp FAN 13 OVEN FRONT PLATE 14 DOOR SEAL Door seal maintains the microwave energy within the oven cavity and prevents microwave leakage 5 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 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 located 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 s
11. 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 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 chec
12. 0 5 HL 1 B03 3516006400 SPEICAL DOUBLE TAPE KOC 8H4T7S 1 B04 3515502500 WINDOW DISPLAY PMMA IF 850 1 B05 3516915000 BUTTON FUNCTION A ABS SG 076OD SG 175 1 B06 3516915100 BUTTON FUNCTION B ABS SG 0760D SG 175 1 B07 3513408900 KNOB VOLUME ABS SG 0760D SG 175 1 B08 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 4 B09 7621301011 SCREW TAPPING T2 PAN 3X10 PW MFZN 8 B10 PKMPMSGGO00 MAIN MANUAL AS KOC 8H4T7S 1 B11 PKBPMSGG00 PCB BUTTON MANUAL AS KOC 8H4T7S 1 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 B08 which secure the PCB Main ASS Y Pull out the Main PCB assembly B10 Remove eight screws B09 which secure the PCB Sub ASS OY Pull out the Sub PCB assembly B11 Pull out ten buttons from the control panel Pull out Decorator control panel B01 from the control panel Pull out Window display B04 from the control panel Reverse the above steps for reassembly 1 2 3 4 5 6 Pull out the Knob volume B07 from the Sub PCB assembly 7 8 9 10 12 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 magnetro
13. 00814 SCREW TAPPING T1 4X8 3 7 7400104011 WASHER PLAIN PW 1 4 MFZN 1 8 3511800700 FAN CONVECTION SA1D 80 0 5 1 9 75627 40 1 SPECIAL SCREW NUT FLANGE M4 MFZN 1 10 3511800900 FAN PBT 1 11 3512782600 HARNESS CONVECTION A 8 5 7 1 12 3512782610 HARNESS CONVECTION B 8 5 7 1 13 7402704600 RING CR 5 SK5 1 14 7122400611 SCREW TAPPING T2S TRS 4X6 MFZN 4 15 3511412600 COVER B SBHG 3 T0 4 1 16 3511410500 COVER MOTOR B SA1D 80 T0 5 1 17 7272400811 SCREW TAPTITE TT3 TRS 4X8 MFZN 1 18 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 1 1 Remove a screw 17 and pull out Cover motor B 16 2 Remove a screw 18 and pull out Cover B 15 Pull out the Harness convection A 11 and Harness convection B 12 Remove four screws 14 and then pull out the Rear heater assembly Remove a Nut 9 and the pull out the Fan convection 8 Pull out the Heater 3 from the Cover Heater B 1 Remove two screw 5 and then separate the Insulator heater 1 and Motor shaded pole 2 Remove the C Ring 13 and then pull out the Fan 10 from Motor shaft Reverse the above steps for reassebly 3 4 5 6 Remove three screws 6 and then separate the Cover heater B 1 and the Insulator heater B 4 7 8 9 10 16 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 perfectl
14. LE 6 The following visual conditions inditions indicate a probable defective touch control Circuit or button P C B assembly 1 Incomplete segments 1 segment missing 2 partial segments missing 3 digit flickering other than normal fluorescent slight flickering 2 Adistinct change in the brightness of one or more numbers exists in the NAJ ee T display 3 One or more digits in the display are not on when they should be j i 7 j 4 Display does not count down or up with time cooking or clock operation l 5 Oven is programmable and cooks normally but no display shows R 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 Normal Malfunction of sub Replace not show continuity of the button pcb assembly control box programming sub assembly at all even if keyboard
15. RELAY 3 OFF GND 24V DC 34 6 Case of no stopping of the count down timer When the door is opened during operation the count down timer does not stop L POINT A B STATE DOOR OPEN OPEN 5V DC DOOR CLOSED GLOSE GND CHECK NO METHOD REMEDY Check the stage ON OFF of the door open monitor switch by resistance measurement Replace door open monitor swith 35 13 P C B CIRCUIT DIAGRAM A 2 3 vid g 6 S 3019534 803 JONVHJIOL Z a ABE 102 SI 40191534 GZYHYWNN 39VLIVM u 2 3 Ex AOS 4 105 2 N zt 51001 p 7007 41022 zoz e 3 aol E429 0151587158 aS 69N 0121719 NIVIN 892IN VPOOPNM zw 194 Xr 54012 00 AGE 1 d5iNTH SSLA3 I 310001 IN 91722723419 002 002 829 17002 7 81 19220 01 990 m pr 00 2 10 Y pgD ZAH Er p 401 0190 82090 YNO 0 21 Wd SOLNS LOLS 206 COWS Zisoussa 1509 90 l 1i jim oy WIL M L A0ZLGLH L M L 910 0160 21558 INO Ne 10 vl 290 lt OMM 1972 1152 SAH Tt Nv3 ANOD ES PON Oc 698988 L h 02 Sl D 03 ar z 8 n 3 q e ol 1 WS 4 0 vA EE l
16. REW TAPTITE TT3 TRS 4X8 MFZN 1 67 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 1 68 3510806400 CABINET AS 871 05 1 69 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 4 70 3517201951 TRAY RACK AS 17551 30MM 1 71 3517210900 TRAY METAL AS 62450 1 72 3512517100 GUIDE ROLLER AS 621505 1 73 3517203610 BORO SI GLASS NEG 1 30 12 PRINTED CIRCUIT BOARD CIRCUIT CHECK PROCEDURE 1 Low voltage transformer check The low voltage transformer is located on the Measuring condition Input voltage 230V Frequency 50Hz 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 x 5 of nominal voltage 2 Voltage Check Terminal Voltage load Voltage no load 6 7 AC 17 0 V AC 19 9 V 8 9 1 3 V AC 1 6 V 9 10 AC 1 3V AC 1 6 V Key check point NO CHECK POINT REMARK 1 IC1 PIN 26 27 SVDC 5 2 IC1 PIN 28 Sue pee ov T 20 ms 50Hz 3 IC1 PIN 8 OR 9 5V Z OV p EM M 250 ns 4MHz Check method NO MEASURE POINT WAVE FORM REMEDY REMARK 1 MP1 DC 5V 596 Replace ZD3 EC1 NO LOAD 2 MP2 DC 24V 2096 Replace D17 20 EC5 NO LOAD NOTE Each measure point must be measured with GND points 31 3 Case of no microwave oscillation 1 When tou
17. S 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 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 is coloured green and yellow must be connected to the terminal in the plug which is marked with the letter 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 N or coloured black The wire which is coloured brown must be connected to the terminal which is marked with the letter L or coloured red NOTE This oven is designed for counter top use only 2 SPECIFICATIONS
18. S M NO OG DA WVOO 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 Nov 2005 S M No 8 4 7 001 Service Manual Microwave Oven Model KOC 8HAT7S v 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 DAEWOO ELECTRONICS Nov 2005 PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO 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 doo
19. TML 1 4M 1 NO PART CORD PART NAME DESCRIPTION Q TY 38 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 2 39 3518003700 MAGNETRON 2M218JFL 6CF 1 40 3516004000 SPECIAL SCREW T2 BOLT FLANGE 5X12 DACRO 1 41 3512805800 HEATER MIRACLON 230V 800W 270MM 1 42 3512806900 HEATER REFLECTOR STS430 0 5 1 43 7113400814 SCREW TAPPING T1 BIN 4X8 2 44 3511412400 COVER HEATER SA1D 80 T0 4 1 45 3510610500 BRACKET COVER HEATER 0 5 1 46 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 1 47 3512523600 GUIDE AIR OUTLET SBHG T0 5 1 48 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 1 49 3511412500 COVER HEATER B SA1D 80 0 5 1 50 3963514330 MOTOR SHADED POLE 230V 50HZ MW10CA T03 1 51 3512807310 HEATER QUARTZ 115V 500W 240MM 2 52 3513303900 INSULATOR HEATER B SBHG 1 T0 6 1 53 7601400811 SCREW MACHINE PAN 4X8 PW MFZN 2 54 7113400814 SCREW TAPPING 1 BIN 4X8 3 55 7400104011 WASHER PLAIN PW 1 4 MFZN 1 56 3511800700 FAN CONVECTION SA1D 80 0 5 1 57 7S627W40X1 SPECIAL SCREW NUT FLANGE M4 MFZN 1 58 3511800900 FAN PBT 1 59 3512782600 HARNESS CONVECTION A KOC 8H5T7S 1 60 3512782610 HARNESS CONVECTION KOC 8H5T7S 1 61 7402704600 RING C CR 5 SK5 1 62 7122400611 SCREW TAPPING T2S TRS 4X6 MFZN 4 63 3518907400 THERMOSTAT OFF 160 ON 0 V 187 1 64 3511412600 COVER SBHG 3 T0 4 1 65 3511410500 COVER MOTOR SA1D 80 T0 5 1 66 7272400811 SC
20. ching 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 A Y a M W D7 RY1 STATE POINT A POINT B RELAY 1 ON 5V DC GND RELAY 1 OFF GND 24V DC 2 When touching M W button oven lamp does not turn on and turntable motor does not rotate but cook indicator in display comes on Cause RELAY 4 does not operate LAMP TRAY JE RY4 A Y STATE POINT A POINT B RELAY 4 ON 5V DC GND RELAY 4 OFF GND 24V DC 3 When touching M W button oven lamp turns on and fan motor does not rotate but cook indicator in display comes on Cause RELAY 5 does not operate A FAN D14 RY5 STATE POINT POINT B RELAY 5 ON 5V GND RELAY 5 OFF GND 24V DC 33 4 Case of no heating of top grill When touching 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 STATE POINT A POINT B RELAY 2 ON 5V DC GND RELAY 2 OFF GND 24V 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 STATE POINT A POINT B RELAY 3 ON 5V DC GND
21. 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 17 8 TROUBLE SHOOTING GUIDE Following the procedure below to check if the oven is defective or not WH 1 2 3 4 your meter NOTE When electric parts are checked be sure the power cord is not inserted the wall outlet Check grounding before trouble checking Be careful of the high voltage circuit Discharge the high voltage capacitor 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 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 Check continuity of Continuity gt Malfunction of GRE interlock monitor switch with Interlock door closed monitor switch
22. evel of micro 8 Convection 6 Convection Used to select convection and selected temp Weight Defrost 7 Weight Defrost Used to defrost foods Time Defrost Time Defrost Used to defrost foods Clock C C OD D O C 0 9 Clock Used to set clock Stop clear Start speedy cook 0 STOP CLEAR Used to stop the oven operation or to delete the cooking data si weight A f START SPEEDY COOK Used to start a programmed also for speedy start each press adds 30 seconds microwave cooking time Dial knob Used to set time weight and quantity 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 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
23. k of correct alignment with the hinge and cavity front plate w Caution 3 To remove door parts 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 A06 REF NO PART CODE PART NAME DESCRIPTION REMARK 01 3516601400 DOOR PLATE SBHG 1A 0 7 1 A02 3513101310 HOOK POM 1 A03 3515101310 SPRING HOOK HSW 3 1 A04 3512209910 FRAME DOOR ABS SR0320 1 A05 3511616300 DECORATOR DOOR STS430 TO 5 HL 1 A06 3517009500 BARRIER SCREEN O MIRROR T3 2 1 A07 3510610600 SUPPORTER BRACKEK GLASS SBHG T0 8 1 A08 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 2 A09 3512606700 HANDLE DOOR AL 1 A10 7001401211 SCREW MACHINE PAN M4XL12 MFZN 2 A11 3512301310 GASKET DOOR PP 1 A12 3515203600 STOPPER HINGE T AS KOC 970T1S 1 A13 712140061 SCREW TAPPING T2S PAN 4X6 MFZN 1 Remove the gasket door from door plate Remove screws from door plate Remove the door frame from door plate Remove screws from door frame Remove the handle from door frame Remove the stopper hinge top from door plate Remove the spring and the hook Remove screws from supporter braket glass Remove barrier screen outer from door frame 1 2 3 4 5 6 Remove the decorator
24. n 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 cm2for a fully assembled oven with door normally closed Metallic Magnetron Wave guide Magnetron antenna antenna SU 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 w 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 10 To remove Top heater a
25. nt 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 1 Prepare Microwave Energy Survey Meter 600cc glass beaker and glass thermometer 100 C 212 F 2 Pour 275cc 15cc of tap water initially at 20 5 C 68 9 F in the 600 cc glass beaker with an inside diameter of approx 95 mm 3 5 in ooooooo 3 Place it at the center of the tray and set it a cavity 4 Close the door and operate the oven 5 Measure the leakage by using Microwave Energy Survey Meter with dual ranges set to 2450MHz 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
26. ource This microwave oven requires a current of approximately 11 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 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 unders
27. ows 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 gt Check continuity of Malfunction of Adjustor motor and primary interlock switch continuity primary interlock replace oven lamp switch do not turn on TT No Adjust or gt continuity of gt continuity Malfunction of a D O M switch D O M switch Check D C voltage gt P Defective touch gt L Replace being supplied to control Circuit RELAY RYA gt Approx gt gt Faultcontacts gt Replace 24N DC of RELAY RY4 or open relay coil 19 TROUBLE 3 No microwave oscillation even though fan motor rotates CONDITION CHECK RESULT CAUSE REMEDY No gt Check continuity of gt No gt Defective gt Replace high voltage fuse continuity high vol
28. r 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 TABLE OF CONTENTS 1 SAFETY bEiieiuuv c 2 2 SPECIFIGA TIONS ze zzz r Dae R qua aasan a GOLE 3 3 EXTERNAL VEW POOR R CA 4 3 1 OUTER DIMENSION sa esa A Ad di Ai 4 3 2 FEATURE DIAGRAM ua aa n etie it ette be Eo DU Xen d Er e M od Nahin 5 4 INSTALLAT ON nere ngg anan nga gada gagas stuck acea rss ah kaga da 6 5 CONTROL PANEL uuu uu ORO RER CRA 7 6 DISASSEMBLY AND ASSENBLY U U u u u u u uuu uuu 8 7 INTERLOCK MECHANISM AND ADJUSTMENT u u uuu uuu u 17 8 TROUBLE SHOOTING GUIDE sean I 18 9 MESUREMENT AND 23 9 1 MEASUREMENT OF THE MICROWAVE POWER 23 9 2 MICROWAVE RADIATION 24 9 3 COMPONENT TEST PROCEDURE 25 9 4 COMPONENT ACTION 325 ad te eeu a EH LEER er Rees 26 10 dbcdshcni 27 11 EXPLODED VIEW AND PARTS LIST e
29. r the water temperature to attain 20 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 4 187 mw Tz 0 55 2 where P isthe microwave power output in watts mw is the mass of the water in grams mc is the mass of the container in grams To is ambient temperature in degrees Celsius T is the initial temperature of the water in degree Celsius T is the final temperature of the water in degrees Celsius t 5 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 T gt To A second 70 64 60 56 52 49 47 44 42 40 38 B W 600 650 700 750 800 850 900 950 1000 1050 1100 23 2 MICROWAVE RADIATION TEST WARNING 1 Make sure to check the microwave leakage before and after repair of adjustme
30. 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 the 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 25 4 COMPONENT ACTION MAGNE UPPER REAR CONVEC COOKING MODE TRON ELEMENT ELEMENT TION FAN M W e MANUAL GRILL MODE COMBI CONVECTION ROAST PORK
31. 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 24 3 COMPONENT TEST PROCEDURE High voltage is present at the high voltage terminal of the high voltage transformer during any cooking cycle tis neither necessary nor 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 1460 10 Filament winding Approx 0 Primary winding Approx 20 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 once the capacitor charged 3 A shorted capacitor will show continuous continuity 4 An open capacitor will show constant 10MO 5 Resistance between each terminal and chassis should be infinite 3 High voltage diode 1 Isolate the diode from the circuit by disconnecting the leads 2 With the ohmmeter set on the highest resistance
32. see eese nennen enea ntes ianen aani antena inaaianei nannaa AAA NANA 28 11 1 5 erem eti bere need u SER DER AA wa ue e RAD u 28 11 2 CONTROL PANEL ASSEMBLY id rates eo edid tere datae eec aab aa dude dei 28 11 3 TOTAL ASSEMBLY u u ei nevi ne e ee le Re fei eerte dde te Bau ctn fe e B cie d Duden fee 28 12 PRINTED CIRCUIT BOARD M 31 13 P C B CIRCUIT U U u u 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 Aloosened door lock A broken door lock The door gasket 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 3 4 5 2 FOR SAFE SERVICE PROCEDURE
33. ssembly parts REF NO PART CODE PART NAME DESCRIPTION QTY REMARK 1 3512805800 HEATER MIRACLON 230V 800W 270MM 1 2 3512806900 HEATER REFLECTOR STS430 0 5 1 3 7113400814 SCREW TAPPING T1 BIN 4X8 2 4 3511412400 COVER HEATER SA1D 80 T0 4 1 5 3510610500 BRACKET COVER HEATER 0 5 1 6 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 1 7 3512523600 GUIDE AIR OUTLET SBHG 0 5 1 8 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 1 1 Remove a screw 8 and pull out Guide air outlet 7 2 Remove screws 6 and pull out braket cover heater 5 3 Pull out heater miraclon 1 4 Remove two screws 3 5 Pull out the heater reflector 2 from cover heater T 4 6 Reverse the above steps for reassembly 15 w 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 11 To remove Rear heater assembly parts REF NO PART CODE PART NAME DESCRIPTION QTY REMARK 1 3511412500 COVER HEATER B SA1D 80 T0 5 1 2 3963514330 MOTOR SHADED POLE 230V 50HZ MW10CA T03 1 3 3512807310 HEATER QUARTZ 115V 500W 240MM A 2 4 3513303900 INSULATOR HEATER B SBHG 1 T0 6 1 5 7601400811 SCREW MACHINE PAN 4X8 PW MFZN 2 6 71134
34. t NAN ANANA jd 1 PAEA er ZA 18 Ad 0120 8169 20 19 145 CAO E NB 00202919509 36 PCB ASS Y PART LIST NO NAME SYMBOL SPECIFICATION PART CODE Q TY REMARK 1 BUZZER BZ1 BM 20K 3515600100 1 2 CERA C4 C5 C9 C10 C11 102K 50V AXIAL CCZB1H102K 5 3 C CERA C1 C3 6 C7 C8 012 C13 C14 104Z 50V AXIAL CCZF1H104Z 9 4 C ELECTRO EC1 50V RS 10uF CEXE1H100A 1 5 C ELECTRO EC2 50V RSS 100uF CEXF1H101V 1 6 C ELECTRO EC3 4 50V RSS 220uF CEXF1H221V 2 7 C ELECTRO EC5 35V RSS 1000uF CEXF1V102V 1 8 CONNECTOR WAFER CN1 35312 0310 30166M5030 1 9 CONNECTOR WAFER CN2 35313 0210 30166M7020 1 10 CONNECTOR FILM CN3 HLEM15S 1 4CW215RBDO 1 11 CONNECTOR WAFER CN4 35328 0610 4CW3061MXO 1 12 DIODE 01 010 013 16 14148 DZN4148 14 13 DIODE D11 12 17 20 1N4004A DZN4004A 6 14 DIODE ZENER 201 UZ 3 9BSB DZUZ3R9BSB 1 15 DIODE ZENER ZD2 UZ 24BSB DZUZ24BSB 1 16 DIODE ZENER ZD3 UZ 5 6BSB DZUZ5R6BSB 1 17 DISPLAY VFD DP1 SVM 5MS06 DSVMS5MS06 1 18 FOAM SPONGE CR 15TX50X1 1 3517306400 1 19 MAIN 268 94 4 227 3514331210 1 20 ARRAY 2 7 6 1 8 100 J RA 87X104J 1 21 RARRAY RA1 3 8P 7 1 8 100K J RA 88X104J 2 22 R CARBON FILM R31 1 2W 27 5 RD 2Z270JS 1 23 R CARBON FILM R26 30
35. tage oscillation fuse microwave oscillation 4 ical Check continuity of gt Continuity gt Defective high voltage capacitor terminals high voltage with wires removed transformer Check continuity of gt Continuity Defective high Replace L high voltage rectifier in forward in backward voltage rectifier and backward direction direction with DC megger Connectmeggerleadsto gt Continuity Defective 2 gt magnetron terminal and magnetron magnetron body gt Check D C voltage gt 0V gt Defective Replace being supplied to touch control RELAY RY1 coil circuit Approx Faulty contacts of Replace 24V RELAY RY1 or open relay coil 1 Check resistance of primary 92 or gt Defective gt Replace and secondary coil of high high voltage voltage transformer transformer QD Check continuity of filament No continuity gt Defective high gt Replace terminal of high voltage voltage transformer transformer 2 Check continuityof M No continuity gt Defective gt Replace magnetron heater with wires magnetron removed 20
36. tood 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 r Defrost 4 Grill Combi Weight Time MW m Land o o i Auto Con 9 Lock vection AUTO COOKW 1 Roast pork 2 Roast beef 3 Roast chicken 4 Baked fish 5 Fresh vegetable 4 Display Cooking time power level indicators and present time are displayed MW When blinking the oven is operating in MICROWAVE Grill When blinking the oven is operating in GRILL Combi When blinking the oven is operating in COMBI Defrost Weight When blinking the oven is operating in WEIGHT DEFROST Time 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 CONVECTION g When blinking the oven is operating in weight input mode 2 Auto cook Used to cook or reheat 8 Combi Used to select combi 4 Grill Used to select grill 5 MW Used to set power l
37. y prevent the danger resulting from the leakage of microwave SWITCH MOUNTING SWITCH MOUNTING BRACKE BRACKET PRIMARY PRIMARY INTERLOCK SII TCH INTERLOCK SWITCH 0 INTERLOCK VONITOR SNITCH DOOR LATCH DOOR LATCH DON SWITCH DOM SWITCH CONDITION DOOR OPEN CONDITION DOOR CLOSE 1 Primary interlock switch When the door is closed the 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
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