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Service Manual

Microwave Oven

Model: KOC-1C0KB

KOC-1C0KBS

KOC-1C4KB

S/M No. : 

Feb. 2010

✔

Caution

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

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

Summary of Contents for KOC-1C0KB

Page 1: ...4KB S M No Feb 2010 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 Pa...

Page 2: ...st 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 misadjust...

Page 3: ...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 th...

Page 4: ...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 WE...

Page 5: ...pe which if damaged must be repaired with cable of same type Such a cable can be purchased from DAEWOO and must be installed by a Qualified Person 6 Examine the oven after unpacking for any damage suc...

Page 6: ...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 bu...

Page 7: ...ick defrost lights in the display during Quick defrosting It means Steam cleaning lights in the display during Steam cleaning It means Deodorization lights in the display during Deodorization It means...

Page 8: ...ok menu 3 Please refer to the next page about using of rotisserie HOW TO USE THE ACCESSORIES OF COOKING Metal Tray Grill Rack Grill Tray Rotisserie NOTE Metal Tray is attached to the left cushion NOTE...

Page 9: ...or detail operation refer to the page 14 4 5 3 NOTE The wide glass heat resistant utensil can be used instead of the base bowl in autocook menu 3 When you operate the oven at the first time smoke and...

Page 10: ...l If water is not enough in the base bowl it could cause the oven to be damaged or fire to happen Do use the Steam bowl only for its intended use as described in this manual This is not intended for l...

Page 11: ...MECHANISM AND ADJUSTMENT CONDITION DOOR OPEN RED RED RED RED BLACK BLUE WHITE BLUE WHITE BLUE YELLOW BLUE LEFT RIGHT CONDITION DOOR CLOSE LEFT RIGHT INTERLOCK MONITOR SWITCH DOM SWITCH HOOK PRIMARY IN...

Page 12: ...CONNECTOR Blue Green Middle Blue 7 SUB RELAY 8 THERMISTER CONNECTOR White White Temperature sensor LOCATION PART NAME WIRING COLOR FUNCTION 11 8 WIRING PROCEDURE MAIN PCB NO 1 Red NO 3 White NO 5 Bla...

Page 13: ...NE FILTER ASS Y BL N GE N SINGLE PHASE ONLY L BR L POWER SUPPLY NC WH WH GN N NC RD YW GY THERMAL CUT OUT FUSE L MGT RD OL RD TOP HEATER CONVECTION HEATER WH BL BL BL BK WH BK BK THERMAL CUT OUT CONVE...

Page 14: ...1 3518125200 TRANS HV R1S58D 1 12 3518606880 NOISE FILTER DWLF M27 4 1 13 35113A5Q0U CORD POWER AS 3X1 5 80X80 120 RTML 1 55M 1 14 3518003710 MAGNETRON 2M218HFL 6CF 1 15 3518907010 THERMOSTAT OFF 120...

Page 15: ...nning 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 repl...

Page 16: ...pring 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...

Page 17: ...28810 DOOR PAINTING AS KOC 1C0KQS 1 A09 3512902020 HINGE HOOK SWRM3 2 A10 3513102100 HOOK ZN DIE CASTING 2 A11 3512303000 GASKET DOOR PBT 1 A12 3512902000 HINGE UNDER L AS KOC 1C0KQS 1 A13 3512902010...

Page 18: ...NCTION A ABS COATING 2 B04 3516913010 DECORATOR KNOB ABS COATING 2 B05 3513411530 KNOB VOLUME ABS SPRAY KOC 1C0KQS 2 B06 3514333100 PCB MAIN AS KOC 1C0KQS 1 B07 3514333200 PCB SUB1 AS KOC 1C0KQS GENER...

Page 19: ...ls 1 from H V transformer to magnetron using the all in one connector 2 Connect the connector which connected two wires 2 from H V transformer to H V capacitor 3 Connect H V diode 3 to H V capacitor i...

Page 20: ...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 f...

Page 21: ...sembly 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 t...

Page 22: ...GEN HEATER SIDE HEATER 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...

Page 23: ...stirrer and supporter stirrer 6 Reverse the above steps for reassembly Fixture Supporter Stirrer Holder Stirrer Supporter Stirrer Stirrer Blade 13 TO REMOVE NOISE FILTER 1 Remove a screw which secure...

Page 24: ...5 1 C06 3513303400 INSULATOR HEATER B SBHG 1 T0 5 1 C07 7113400814 SCREW TAPPING T1 BIN 4X8 MFNI 6 C08 3963513950 MOTOR SHADED POLE 230V 50HZ OEM 10DWC2 T08 1 C09 7121400611 SCREW TAPPING T2S PAN 4X6...

Page 25: ...3 F81 F82 F83 F01 F70 F64 F63 F60 F57 F56 F14 F15 F16 F17 F18 F19 F20 F21 F22 F23 F24 F25 F26 F27 F28 F29 F30 F31 F32 F33 F34 F35 F37 F36 F39 F46 F45 F47 F44 F54 F55 F49 F50 F51 F52 F58 F61 F62 F41 F3...

Page 26: ...OVER B SBHG T0 8 1 F16 3512808420 HEATER B AS KOC 1C0K5SC2 1 F17 3963320200 MOTOR BLOWER 220V 240V 60Hz OEM 2505B1 1 F18 7S312X40A1 SCREW SPECIAL T1 TRS 4X10 SE MFZN 2 F19 3511415100 COVER EXHAUST GAL...

Page 27: ...APPING T2S TRS 4X8 MFZN 1 F61 3513601600 LAMP BL 240V 25W T25 C7A H187 1 F62 3511407810 COVER LAMP T GLASS T2 0 1 F63 7122400811 SCREW TAPPING HVR 1X 3AB 12KV 187 1 F64 7S312X40A1 SCREW SPECIAL T1 TRS...

Page 28: ...he capacitor charged 3 A shorted capacitor will show continuous continuity 4 An open capacitor will show constant 10M 5 Resistance between each terminal and chassis should be infinite 4 Magnetron For...

Page 29: ...move a connector from the heater 2 Measure resistance between two terminals like as following figure 3 Normal readings of top heater rear heater and halogen heater are 36 36 23 4 The oven should be co...

Page 30: ...us 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 push...

Page 31: ...ocedure 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 con...

Page 32: ...nd the monitor switch find the trouble in switch 1 Replace switch 2 Replace main fuse RESULT CAUSE AND REMEDY CHECK Check the connecting location of H V transformer H V diode and H V capacitor False c...

Page 33: ...ify location of door and door hook or replace door assembly Yes Check Check continuity of monitor switch and DOM switch No continuity Replace switch which causes a problem No No No No No Yes Check ins...

Page 34: ...eplace door assembly Yes Check continuity of monitor switch and DOM switch No continuity Replace switch which cause a problem No Yes Check insertion of DOM terminal to PCB No insertion Insert DOM term...

Page 35: ...n is cooled enough operate again If Display show Err2 again following the below procedure DISPLAY CAUSE REMEDY CONDITION CHECK Check continuity of thermistor resistance of thermistor Defective thermis...

Page 36: ...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 whe...

Page 37: ...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 Temperatu...

Page 38: ...37 PCB PATTERN DIAGRAM 12V 5V GND...

Page 39: ...S M NO 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 PRINTED DATE Feb 2010...

Page 40: ...L ABOUT THIS MANUAL KOC 1C0K5SC2 KOC 1C0KB F F M MO OD DE EL L KOC 1C0K5SC3 KOC 1C0KBS KOC 1C4K5SC1 KOC 1C4KB 2010 02 22 39 1 2 3 Service Manual MEMO 39p VISION TEL 730 0660 FAX 730 3788 10 02 22 39p...

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