1. DL manuals
  2. Daewoo
  3. Microwave Oven
  4. KOG-867T
  5. Service Manual

Daewoo KOG-867T Service Manual - Service Manual

Other manuals for KOG-867T: Operating Instructions Manual, Service Manual
Manual is about: & toaster

Summary of KOG-867T

  • Page 1

    Service manual microwave oven model: kor-630a0a/1a kor-860a0a/1a daewoo electronics co., ltd. S/m no. : r630a0a001 http://svc.Dwe.Co.Kr ✔ 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 informatio...

  • Page 2: Service Manual

    Service manual model : kog-867t microwave oven sep. 2003 s/m no. : r630a0a001.

  • Page 3

    Safety and precautions ........................................................................................................... 2 1. For safe operation ............................................................................................................................. 2 2. For safe servi...

  • Page 4

    Safety and precautions 1. For safe operation dam age that allows the m icrowave energy ((that cooks or heats the food) to escape will result in poor cooking and m ay cause serious bodily injury to the operator. If any o f the fo llo w ing co nditio ns exist, o perato r m ust no t use the appliance. ...

  • Page 5

    Specifications specificatio ns are subject to chang e w itho ut no tice. M o d el k o r -6 3 0 a k o r -8 6 0a p o w e r s u p ply 1 2 0v -6 0 h z, s in g l e p h a s e w ith g r o u n d in g po w e r c o n su m ptio n m ic r o w ave 1 2 00 w 1 35 0 w g r il l c o m bin atio n m ic r o w ave e n e r...

  • Page 6

    External view 1. Outer dimension (kor-630a/kor-860a) 465/495 2 7 9/ 29 4 360/388.

  • Page 7

    External view 2. Feature diagram 1. Door seal door seal m aintains the m icrowave within the oven cavity and prevents m icrowave leakage. 2. Door hook w hen door is closed, it will autom atically lock shut. If door is opened while oven is operating, m agnetron tube will im m ediately stop operating....

  • Page 8

    External view 3. Control panel 1. Time set pad - used to set the cooking tim e and the present tim e. 2. Display - cooking tim e, power level, indicators and present tim e are displayed. 3. One touch - used to cook or reheat specific quantities of food. 4. Auto cook - used to cook or reheat. 5. More...

  • Page 9

    Installation 1. Steady, flat location this m icrowave oven should be set on a steady, flat surface. 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 oven failure. 3. Away from radio and tv...

  • Page 10

    Operations and functions 1. Connect the m ain lead to an electrical outlet. 2. After placing the food in a suitable container, open the oven door and put it on the glass tray. The glass tray m ust always be in place during cooking. 3. Close the door securely. 4. W hen the oven door is opened, the li...

  • Page 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 safety during normal operation. However, carelessness in servicing the oven can result in an electric shock or possible da...

  • Page 12

    Disassembly and assembly 1. To remove cabinet 1) rem ove three screws on cabinet back. 2) push the cabinet backward. 2. To remove door assem bly 1) rem ove a screw which secure the stopper hinge top. 2) rem ove the door assem bly from top plate of cavity. 3) reverse the above for reassem bly. Note a...

  • Page 13

    Disassembly and assembly 3. To remove door parts. 1) ko r-630a 2) ko r-860a ref. No pa rt code part n ame description q ty remark a 01 3512203810 fr a m e d o o r a bs x r -401 h -2938 1 a 02 351 7 0 0 3 05 0 ba r r ier -s c r e e n *o a c r y l 1 a 03 3515304610 su p p o rte r b ar r -s *o p p 1 a ...

  • Page 14

    Disassembly and assembly 1) rem ove the gasket door from door weld as. 2) rem ove the barrier screen inner from door weld as. 3) rem ove the door fram e from door weld as. 4) rem ove the stopper hinge top from door weld as. 5) rem ove the spring and the hook. 6) rem ove the supporter barrier screen ...

  • Page 15

    Disassembly and assembly 5. To remove control panel parts. 1) ko r-630a 2) ko r-860a ref.No part code pa rt nam e de scription qty remar k b 01 3518521400 s w itc h m e m b r an e k o r -630a 0a 1 b 02 3516719510 c o nt r o l-pan e l a b s af -345 hfa -700h t 1 b 03 p km p m sz d 00 p c b m a in as ...

  • Page 16

    Disassembly and assembly 1) remove the screw which secure the control panel, push up two snap fits and draw forward the control panel assem bly. 2) rem ove the door open lever from the control panel. 3) rem ove four screws which secure the pcb assem bly to control panel. 4) disconnect m em brane tai...

  • Page 17

    Disassembly and assembly 8. To remove wind guide assembly. 1) rem ove a screw which secure the wind guide assem bly. 2) draw forward the wind guide assem bly. 3) pull the fan from the m otor shaft. 4) rem ove two screws which secure the m otor shaded pole. 5) rem ove the m otor shaded pole. 6) rever...

  • Page 18

    Interlock mechanism and adjustment the door lock m echanism is a device which has been specially designed to com pletely elim inate m icrowave radiation when the door is opened during operation, and thus to perfectly prevent the danger resulting from the leakage of microwave. (1) prim ary interlock ...

  • Page 19

    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. 4) w hen checking the continuity of the switches, fuse or high voltage transf...

  • Page 20

    Trouble shooting guide ( trouble 2 ) display shows all figures selected, but oven does not start cooking, even though desired program and tim e are set and start pad is tapped. Con dition check result cause rem edy o utlet has proper voltage f use does not blow. C heck con tinuity of m agn etron n o...

  • Page 21

    Trouble shooting guide ( trouble 3 ) no m icrowave oscillation even though fan m otor rotates. Con dition check result continuity continuity in backw ard direction 0 Ω or no continuity no continuity 0 v approx 15 vdc cause defective high voltage transform er defective high voltage rectifier defectiv...

  • Page 22

    Trouble shooting guide ( tr o u b le 4 ) t he follow ing visual conditions indicate a probable defective touch control circuit or m em brane sw itch assem bly. 1. Incom plete segm ents, 1) segm ents m issing. 2) partical segm ents m issing. 3) digit flickering other than norm al display slight flick...

  • Page 23

    Measurement and test 1. Measurement of the microwave power output m icrowave output power can be checked by indirectly m easuring the tem perature rise of a certain am ount of water exposed to the m icrowave as directed below. Procedure 1. M icrowave power output m easurem ent is m ade with the m ic...

  • Page 24

    Measurement and test 2. Microwave radiation test procedure 1. Prepare m icrowave energy survey m eter, 600cc glass beaker, and glass therm om eter 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 diam eter of approx. 95...

  • Page 25

    Measurement and test 3. Component test procedure high voltage is present at the high voltage term inal of the high voltage transform er during any cooking cycle. It is neither necessary nor advisable to attem pt m easurem ent of the high voltage. Before touching any oven components or wiring, always...

  • Page 26

    Wiring diagram 1) kor-630a0a/kor-860a0a.

  • Page 27

    Wiring diagram 2) kor- 630a1a/860a1a.

  • Page 28

    Printed circuit board 1. Circuit check procedure 1. Low voltage transformer check the low voltage transform er is located on the p.C.B. M easuring condition: input voltage: 120 v / frequency: 60hz 2. Voltage check - key check point - check m ethod term inal voltage lo ad n o lo a d 4 - 7 a c 12.6 v ...

  • Page 29

    Printed circuit board m p1 m p2 measure point.

  • Page 30

    Printed circuit board 3. W hen there is no microwave oscillation 1) w hen touching start pad, oven lam p does not turn on. Fan m otor do not rotate, but cook indicator in display com es on. Cause : relay 2 does not operate. Refer to circuit diagram ( point 3) - check m ethod 2) w hen touching start ...

  • Page 31

    Printed circuit board 2. P.C.B. Circuit diagram.

  • Page 32

    Printed circuit board 3. P.C.B. Location no 1) ko r-630a no nam e sym bol sp ecific ation part code q 'ty 1 b uz z e r b z1 b m -20k 3515600100 1 2 c ar r ay c a 1 7p(6) 102 m 50v cn 6x b-102m 1 3 c apac ito r ele c e c 1 16v r s s 100uf ce x f 1c 101v 1 4 c apac ito r ele c e c 2 25v r s s 1000uf c...

  • Page 33

    2) ko r-860a no nam e sym bol sp ecific ation part code q 'ty 1 b uz z e r b z1 b m -20k 3515600100 1 2 c ar r ay c a 1 7p(6) 102 m 50v cn 6x b-102m 1 3 c apac ito r ele c e c 1 16v r s s 100uf ce x f 1c 101v 1 4 c apac ito r ele c e c 2 25v r s s 1000uf c e x f 1e 102v 1 5 c o n n e ct o r w a f e ...

  • Page 34

    Exploded view and parts list 1. Door assembly refer to disassem bly and assem bly. 2. Control panel assembly refer to disassem bly and assem bly. 3. Total assembly(kor-630a0a/860a0a).

  • Page 35

    Exploded view and parts list 1) ko r-630a0a ref no part code part name description q'ty a00 3511710320 doo r as kor -63050s 1 b00 pkc psw zf00 con trol-panel as kor -630a0a 1 f01 3510801310 cabin et pc m t0.36 ge 1 f02 3516004100 special screw t1 trs lr 4 pole 4*10 m fzn 3 f03 3516109000 cavity w el...

  • Page 36

    2) ko r-860a0a ref no part code part name description q'ty a00 3511710720 doo r as kor -86050s 1 b00 pkc psw nf00 con trol-panel as kor -860a0a 1 f01 3510801400 cabin et pc m t0.6 1 f02 3516004100 special screw t1 trs lr 4 pole 4*10 m fzn 3 f03 3516109200 cavity w eld as kor -86150s 1 3516109700 cav...

  • Page 37

    Exploded view and parts list 1. Door assembly refer to disassem bly and assem bly. 2. Control panel assembly refer to disassem bly and assem bly. 3. Total assembly(kor-630a1a/860a1a).

  • Page 38

    Exploded view and parts list 1) ko r-630a1a ref no part code part name description q'ty supply a00 3511710320 do or as kor -630a0s 1 o b00 pkc psw zf00 co ntrol-panel as kor -630a0a 1 o f01 3510801310 ca binet pcm t0.6 g e 1 o f02 7s312x40a1 special screw t1 trs 4*10 se m fzn 3 o f03 3516109000 cavi...

  • Page 39

    Exploded view and parts list 2) ko r-860a1a ref no part code part name description q'ty supply a00 3511710720 doo r as ko r-86050s 1 o b00 pk cpsw nf00 contro l-pane l a s ko r-860a 0a 1 o f01 3510801430 cabinet pcm t0.6 g e 1 o f02 7s312x40a 1 specia l scr ew t1 trs 4*10 se m fzn 3 o f03 3516109200...