Daewoo KOC-1C0KB Service Manual - 11. Disassembly and Assembly

Other manuals for KOC-1C0KB: Owner's Manual
Manual is about: Microwave Oven

Summary of KOC-1C0KB

  • Page 1

    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 serv...

  • Page 2: Table of Contents

    1 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 microwav...

  • Page 3: 1. Safety and Precautions

    2 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 t...

  • Page 4: 2. Specifications

    3 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)...

  • Page 5: 3. Installation

    4 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 ...

  • Page 6: 4. Control Panel

    5 4. Control panel 1 display the display shows you some information such as cooking time, menu, quantity and temperature and so on. 2 quick defrost( ) button you can defrost a 500 grams of food quickly and easily. 3 steam cleaning( ) button this function helps you to clean the inside of oven. 4 deod...

  • Page 7

    6 1 display window the display shows you some cooking information such as cooking time, clock, temperature, quantity and so on. 2 icons of cookware : it means a steam bowl. If lights in the display , use a steam bowl for cooking. (this is optional feature.) : it means a grill rack. If lights in the ...

  • Page 8: 6. Accessories

    7 6. Accessories this oven is equipped with several accessories. They can be used in various ways to facilitate cooking. 1 metal tray - put food or proper cookware on the metal tray. 2 grill rack - put the grill rack on the metal tray. It should be always used with the metal tray for cooking. 3 gril...

  • Page 9

    8 7. Interlock mechanism and adjustment ■ how to use the accessories of cooking 1 insert chicken into rotisserie 2 fix forks by turing the fixture 3 insert the right shaft of bar into the motor 4 put the left shaft of bar on the holder of rotisserie. 5 put the base bowl of steam bowl on the center o...

  • Page 10

    9 ■ component parts of steam bowl ■ how to use steam bowl ■ important safety instructions lid steam plate base bowl pour the required amount of water into the base bowl. (about 200~300ml) put the steam plate on the base bowl. And put ingredients on it not to overlap each other. Cover with the lid. M...

  • Page 11

    10 7. Interlock 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 interlock switch.

  • Page 12: 8. Wiring Procedure

    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 6 d.O.M connector blue, green(...

  • Page 13: 9. Wiring Diagram

    12 9. Wiring diagram gy:gray bl:blue ge:green/yellow gn:green rd interlock secondary st:stirrer motor cm:convection motor fm:blower motor ol:lamp t/motor note : door : closed cook : off [condition] l.V. Transformer relay lamp no. Switch com. Interlock primary bk:black yw:yellow br:brown rd:red wh:wh...

  • Page 14

    13 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 fu...

  • Page 15: 11. Disassembly and Assembly

    14 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 pos...

  • Page 16: 12. Disassembly and Assembly

    15 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 ...

  • Page 17

    16 4. Exploded view and parts list of door ass'y. 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-1c...

  • Page 18

    17 5. Exploded view and parts list of control panel. B01 b02 b03 b04 b05 b06 b07 b08 b09 b10 b11 b01 3511620110 decorator c-panel san t1.5 white 1 b02 3516725920 control-panel pc+abs hr5007a spray koc-1cokqs 1 b03 3516913020 button function-a abs coating 2 b04 3516913010 decorator knob abs coating 2...

  • Page 19

    18 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. 1) connect two te...

  • Page 20

    19 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 ca...

  • Page 21

    20 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. 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...

  • Page 22

    21 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) 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 bra...

  • Page 23

    22 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 stirre...

  • Page 24

    23 15. Explode view and parts list of back heater assembly c01 c02 c03 c04 c05 c06 c07 c08 c14 c12 c10 c09 c11 c13 c15 c01 7s628w40x1 nut hex nut flange m4x0.7p mfzn 1 c02 3511800700 fan convection sa1d t0.5 1 c03 3512808000 heater 230v 1400w kawai 1 c04 3512806000 heater reflector sa1d t0.5 1 c05 3...

  • Page 25

    24 16. Total assembly and parts list a00 b00 f02 f03 f04 f05 f06 f07 f08 f09 f10 f11 f12 f13 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 f38 f40 f43...

  • Page 26

    25 a00 3511730010 door as koc-1c0kb or koc-1c0k5sc2 1 3511730020 koc-1c0kbs or koc-1c0k5sc3 1 3511730000 koc-1c4kb or koc-1c4k5sc1 1 b00 pkcpswal40 control-panel as koc-1c0kb or koc-1c0k5sc2 1 pkcpswal70 koc-1c0kbs or koc-1c0k5sc3 1 pkcpswala0 koc-1c4kb or koc-1c4k5sc1 1 f01 3516120000 cavity as koc...

  • Page 27

    26 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 t0.6 1 f46 35120011...

  • Page 28: 12. Component Test Procedure

    27 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...

  • Page 29

    28 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 60 Ω and convection motor is 270 Ω . 4) it is normal to stop convection motor smoothly, when door is open during convectio...

  • Page 30

    29 11. Thermostat (anti-superheating device) thermostat shut off power supply through opening connection of terminals, when product arrive in particular temperature by superheating. Measuring point 8. Power code 1) remove a connector from the power code. 2) check each continuity of n-n and l-l termi...

  • Page 31: 13. Trouble Shooting Guide

    30 13. Trouble shooting guide 1. Check points yes no check check continuity of main fuse no continuity replace main fuse result cause and remedy yes replace the control panel and check the power display shows the problem was caused by the control panel yes check continuity of power code, noise filte...

  • Page 32

    31 2. Check points after repair - after repair or replacement of parts, operate the oven in m/w mode. There will be occur following problems. 2-1) display doesn't show again, after opening and closing the door check check the continuity between the primary interlock switch and the monitor switch fin...

  • Page 33

    32 1. Check points check result cause and remedy trouble2) although display shows, no microwave oscillation or the oven does not start cooking 2. Check points after repair - after repair or replacement of parts, operate the oven in microwave mode. - operate m/w mode using a cup of water about 300ml ...

  • Page 34

    33 1. Check points check result cause and remedy trouble3) although display shows, oven cooking is not operated (including operating problems of start button) 2. Check points after repair - after repair or replacement of parts, operate the oven in convection 200°c during 10 minutes - check the cavit...

  • Page 35

    34 trouble4) when "error2" or "error3" come on display when does happen these errors ? Error3 happen that the temperature sensor (thermister) dosen't connect to p.C.B connector error2 happens if the temperature of cavity is very high after the oven is cooled enough, operate again if display show "er...

  • Page 36

    35 condition check check each button for continuity of the button malfunction of sub pcb assembly result normal cause remedy replace sub pcb assembly display does not show programming at all, even if keyboard is touched. Trouble 5) the following visual conditions indicate a probable defective touch ...

  • Page 37: 14. Printed Circuit Board

    36 14. Printed circuit board 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...

  • 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: About This Manual

    V viis siio on n c cr re ea at tiiv ve e,, iin nc c.. 서울 종로구 통의동 6 번지 이룸빌딩 4 층 about this manual about this manual 담 당 이태희 님 koc-1c0k5sc2 koc-1c0kb f f..M mo od de el l koc-1c0k5sc3 koc-1c0kbs koc-1c4k5sc1 koc-1c4kb 접 수 2010.02.22 총 39페이지 1차 일 정 2차 3차 제 판 한 인 인 쇄 쇄 규 격 service manual memo 총 39p 연락처 ...