S/M No. : Service Manual Microwave Oven Model: KOC-1C0KB KOC-1C0KBS KOC-1C4KB ✔ 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). Feb.
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.
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. (2) A broken door viewing screen. (3) A broken front panel, oven cavity. (4) A loosened door lock. (5) A broken door lock.
2. SPECIFICATIONS MODEL KOC-1C0KB / KOC-1C0KBS / KOC-1C4KB POWER SUPPLY 230V~50Hz, SINGLE PHASE WITH earthing MICROWAVE 1450W POWER GRILL 1250W CONSUMPTION CONVECTION 2650W COMBINATION 2750W, MAX 2900W MICROWAVE ENERGY OUTPUT 800W (IEC705) MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS (W X H X D) 524X375X477mm(20.63X14.76X18.78in) CAVITY DIMENSIONS (W X H X D) 400x233x365mm(15.75x9.17x14.37in) NET WEIGHT Approx. 25kg(55.
3. INSTALLATION 1. Steady, flat location This microwave oven should be set on a steady, flat surface. This microwave oven is designed for counter top use only. 2. 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. 3. 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.
4. CONTROL PANEL 1 Display The display shows you some information such as cooking time, menu, quantity and temperature and so on. 6 Control Dial Knob ( ): You can enter cooking time, quantity, weight, and temperature by turning the Control Dial knob. 7 Selection( ) Button: You can confirm the contents you entered by pressing the Selection button. 2 Quick defrost( ) Button You can defrost a 500 grams of food quickly and easily.
1 Display window 5 Icons of cooking menu The display shows you some cooking information such as cooking time, clock, temperature, quantity and so on. : It means Quick defrost. during Quick defrosting. lights in the display : It means Steam cleaning. during Steam cleaning. 2 Icons of cookware lights in the display : It means Deodorization. during Deodorization. : It means a Steam bowl. If lights in the display , use a steam bowl for cooking. (This is optional feature.
6. ACCESSORIES This oven is equipped with several accessories. They can be used in various ways to facilitate cooking. 1 2 3 4 1 Metal Tray - Put food or proper cookware on the metal tray. NOTE : Metal Tray is attached to the left cushion. 2 Grill Rack - Put the grill rack on the metal tray. It should be always used with the metal tray for cooking. 3 Grill Tray - Put food or proper cookware on the grill tray NOTE : Grill Tray is attached to the right cushion.
7. INTERLOCK MECHANISM AND ADJUSTMENT ■ HOW TO USE THE ACCESSORIES OF COOKING 1 Insert Chicken into rotisserie 5 Put the base bowl of steam bowl on the center of bottom The base bowl of steam bowl is usually used to catch any fat and/or grease dripping from food placed directly on the grid or to cook food directly. 4 3 2 Fix forks by turing the Fixture 5 3 Insert the right shaft of bar into the motor 6 Start cooking by Auto cook menu 3 For detail operation, refer to the page 14.
STEAM BOWL GUIDE (Optional) ■ Component parts of Steam bowl Lid Steam plate Base bowl WARNING: • The oven and steam bowl is very hot after cooking. • Use thick oven globes while you are handing food or accessories. Tips : You can cook small items faster than larger ones. And uniform sized food will be cooked more evenly. ■ How to use Steam bowl about 200~300ml Pour the required amount of water into the base bowl. (about 200~300ml) Put the steam plate on the base bowl.
7.
8. WIRING PROCEDURE MAIN PCB 1 2 5 3 4 8 7 6 LOCATION PART NAME WIRING COLOR FUNCTION 1 MW RELAY Black & White, Black & White Control M/W 2 HALOGEN HEATER RELAY White & Red, Black Control halogen heater(Side heater) 3 TOP HEATER RELAY White & Black, Black Control heater top 4 CONVECTION RELAY Blue, Blue Control heater back 5 SLOW ACTING RELAY Blue, Blue Prevent the current of oven from rising rapidly in Microwave Mode 6 D.O.M CONNECTOR Blue, Green(Middle), Blue D.O.
N L GE BL BR N L FUSE 12 BK BK GN N L POWER SUPPLY : SINGLE PHASE ONLY LINE FILTER ASS'Y SPEAKER NC. YW NO. BL BM BK L.V. TRANSFORMER PRIMARY INTERLOCKSWITCH COM. WH RD MGT THERMAL CUT-OUT DOOR : CLOSED COOK : OFF [CONDITION] WH RD BL FM RD BL CM BK CONVECTION HEATER WH BL BK RD BK BK RD BL BL WH OL:LAMP FM:BLOWER MOTOR CM:CONVECTION MOTOR ST:STIRRER MOTOR BM:BARBEQUE MOTOR NOTE : NC. BK BK BK BL RD ST BL WH YW RD BL D.O.M.
NO PART CODE PART NAME SPECIFICATION 1 3966031300 MOTOR SYNCRO SM16F -HK36T1FY 1 2 3518303901 CAPACITOR HV 2100VAC 1.1UF #187 75M +3,-0 1 3 3518400400 DIODE HV HVR-1X-3AB 12KV #187 1 4 3513601600 LAMP BL 240V 25W T25 C7A H187 1 5 3512783930 HARNESS MAIN KOC-1C4K5SC1 1 6 3512783940 HARNESS CONVECTION AS KOC-1C4K5SC1 1 7 3518701900 FUSE H.V 5kV 0.8A T.H.V.
11. 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.
12. DISASSEMBLY AND ASSEMBLY 1. To remove cabinet 1) Remove four screws on cabinet back. 2) Push the cabinet backward. 2. To remove door ASS'Y 1) Remove each two screws (total 4EA) on left and right sides. 2) Remove spring hinges in both sides. * It is easy to remove the bottom of spring firstly and to set the top of spring firstly. 3) Remove HINGE TOP *R and HINGE TOP *L. * HINGE TOP must be connected to the inside of DOOR. 4) Reverse the above steps for reassembly. 3.
4. EXPLODED VIEW AND PARTS LIST OF DOOR ASS'Y. NO. PART CODE PART NAME DESCRIPTION A01 3512603830 HANDLE DOOR *O ABS SPRAY KOC-1C0KQS 1 A02 3515309510 SUPPROTER HANDLE PO T1.6 1 A03 3512603910 HANDLE DOOR *I ABS 1 A04 3517010720 BARRIER SCREEN *O TEMP GLASS T3.2 WHITE PATTERN 1 A05 3512210320 FRAME DOOR PC+ABS HR-5007A SPRAY KOC-1C0KQS 1 A06 3513304620 INSULATOR GLASS T2.
5. EXPLODED VIEW AND PARTS LIST OF CONTROL PANEL. B01 B02 B03 B04 B05 B06 B07 B08 B09 B11 PART NAME DESCRIPTION B10 NO. PART CODE Q'TY B01 3511620110 DECORATOR C-PANEL SAN T1.
6. To remove high voltage capacitor 1) Remove a screw which secure the grounding ring terminal of the H.V.diode and capacitor holder. 2) Remove the H.V.capacitor from the capacitor holder. 3) Remove the H.V.diode from the H.V.Capacitor. 4) Reverse the above steps for reassembly. Capacitor Holder H.V.Capacitor H.V.Diode NOTE: Connecting procedure of magnetron, H.V. transformer, H.V, diode, H.V. fuse, H.V. capacitor. 1) Connect two terminals(1) from H.V.
7. TO REMOVE MAGNETRON 1) Remove a screw which secure the magnetron. 2) Remove the magnetron. 3) Reverse the above steps for reassembly. NOTE: Never install the magnetron without the metallic gasket plate which is packed with each magnetron to 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 closed.
8. TO REMOVE BLOWER MOTOR 1) Remove a screw which secure the cover motor blower. 2) Remove a screw which secure the blower motor. 3) Remove the cover motor blower. 4) Remove the wire which connecting the blower motor 5) Push a latch of blower motor and draw backward 6) Reverse the above steps for reassembly. COVER MOTOR BLOWER BLOWER MOTOR LATCH 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.
10. TO REMOVE TOP HEATER 1) Remove a nut which secure the top heater. 2) Pull out the heater. 11. TO REMOVE HALOGEN HEATER (SIDE HEATER) Halogen heater cover 1) Remove a screw in insulator heater top. 2) Remove the wire which connecting the halogen heater. 3) Remove a screw on cover of halogen heater. 4) Remove a bracket of halogen heater. 5) Remove a halogen heater. 6) Reverse the above steps for reassembly.
12. TO REMOVE STIRRER FAN 1) Remove a screw to the cover wave guide. 2)Push the fixture supporter in top plate. 3) Remove a holder stirrer from the stirrer motor. 4) Rotate the holder stirrer about 45°C and reassemble from groove of the stirrer blade. 5) Remove holder stirrer and supporter stirrer. 6) Reverse the above steps for reassembly. Holder Stirrer Supporter Stirrer Fixture Supporter Stirrer Stirrer Blade COVER WAVE GUIDE 13.
15. EXPLODE VIEW AND PARTS LIST OF BACK HEATER ASSEMBLY C01 C02 C03 C15 C04 C14 C05 C06 C13 C07 C12 PART NAME C11 DESCRIPTION C08 C10 NO. PART CODE C01 7S628W40X1 NUT HEX C02 3511800700 FAN CONVECTION SA1D T0.5 1 C03 3512808000 HEATER 230V 1400W KAWAI 1 C04 3512806000 HEATER REFLECTOR SA1D T0.5 1 C05 3511409800 COVER HEATER *B SA1D-80 T0.5 1 C06 3513303400 INSULATOR HEATER *B SBHG-1 T0.
16.
NO.
NO. PART CODE PART NAME DESCRIPTION Q'TY F40 3514801900 SENSER TEMPERATURE PTM-K312-D10 1 F41 7S312X40A1 SCREW SPECIAL T1 TRS 4X10 SE MFZN 1 F42 3512808510 HEATER GRILL 230V 1200W 1 F43 7113400810 SCREW TAPPING T1 BIN 4X8 STS430 MFZN 4 F44 3511408320 COVER WAVE GUIDE MICA T1.0 1 F45 3517101410 STIRRER BLADE AL050-H18 T0.
12. COMPONENT TEST PROCEDURE • High voltage is present at the high voltage terminal of the high voltage transformer during any cooking cycle. • It is 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. • To measure resistance of each component, refer to figures. 1.
5. BLOWER MOTOR AND CONVECTION MOTOR 1) Remove a connector from the motor. 2) Measure resistance between two terminals like as following figure. 3) Reading of blower motor is 60Ω and convection motor is 270Ω . 4) It is normal to stop convection motor smoothly, when door is open during convection mode. => You can see the motion of convection motor, Measuring point Measuring point BLOWER MOTOR CONVECTION MOTOR 6.
8. POWER CODE 1) Remove a connector from the power code. 2) Check each continuity of N-N and L-L terminal like as following figure. 3) It should be normal to keep continuous continuity. L-L N-N 9. INTERLOCK SWITCH There are three terminals in interlock switch : COM, NO, NC. 1) NC and COM terminals are connected by ordinary condition. 2) NO and COM terminals are connected by pushing a button terminal.
13. TROUBLE SHOOTING GUIDE Following the procedure below to check if the oven is defective or not. 1) Check grounding before checking trouble 2) Be careful of the high voltage circuit. 3) Discharge the high voltage capacitor. 4) When checking the continuity of the switches, fuse or high voltage tranformer, check continuity with the AC plug removed.
2. Check points after repair - After repair or replacement of parts, operate the oven in M/W mode. There will be occur following problems.
Trouble2) Although display shows, No microwave oscillation or the oven does not start cooking 1.
TROUBLE3) Although display shows, oven cooking is not operated (Including operating problems of start button) 1.
Trouble4) When "ERROR2" or "ERROR3" come on display DISPLAY When does happen these ERRORs ? Error3 happen that the temperature sensor (thermister) dosen't connect to P.C.
TROUBLE 5) The following visual conditions 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. A distinct change in the brightness of one or more numbers exists in the display 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.
14. PRINTED CIRCUIT BOARD MAIN PCB 1 2 5 3 4 8 7 6 LOCATION PART NAME FUNCTION 1 MW R ELAY Control M/W 2 HALOGEN HEATER RELAY Control halogen heater (side heater) 3 TOP HEATER RELAY Control top heater 4 CONVECTION RELAY Control back heater 5 SLOW ACTING RELAY Prevent the transient current (while)operating M/W 6 DOM Let a micon decide Open and close of door 7 SUB R ELAY 8 THERMISTER NO. 1 & 3 : Supply power to PCB NO. 5 : Convection motor NO. 7 : Blower-Motor NO.
PCB PATTERN DIAGRAM 12V 5V GND 37
DAEWOO ELECTRONICS CORP. 1-2, Jeo-dong 1(il)-ga, Jung-gu, Seoul, Korea C.P.O. BOX 8003 SEOUL, KOREA TELEX: DWELEC K28177-8 CABLE: “DAEWOOELEC” S/M NO. : PRINTED DATE: Feb.
ABOUT THIS MANUAL VISION CREATIVE, INC. 서울 종로구 통의동 6 번지 이룸빌딩 4 층 담 당 이태희 님 KOC-1C0K5SC2 F.MODEL KOC-1C0K5SC3 KOC-1C0KB B.MODEL KOC-1C0KBS KOC-1C4K5SC1 접 수 KOC-1C4KB 2010.02.22 총 39페이지 1차 일 정 2차 3차 제 판 한 규 격 Service Manual 인 쇄 MEMO 총 39p 10.02.22-전체신규 39p 10.02.
