S/M No. : R63B50S001 Service Manual Microwave Oven Model: KOR-63B50S KOR-86B50S DAEWOO ELECTRONICS CO., LTD. http://svc.dwe.co.
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 w ith the door open.
SAFETY AND PRECAUTIONS 1. FOR SAFE OPERATION D am age that allow s the m icrow ave energy (that cooks or heats the food) to escape w ill result in poor cooking and m ay cause serious bodily injury to the operator. IF A N Y O F TH E FOLLO W IN G CO N D ITIO N S E X IS T, O P E RATO R M U S T N O T US E TH E A P P LIA N C E . (O nly a trained service personnel should m ake repairs.) 1) A broken door hinge. 2) A broken door view ing screen. 3) A broken front panel, oven cavity. 4) A loosened door lock.
SPECIFICATIONS M ODEL K O R -63B5 P O W E R S U P P LY 230V ~50H z, S ING LE PH A S E W IT H E A RT H ING POW ER C O N S U M PT IO N M IC RO W AVE K O R -86B 5 1200W 1350W 800W 900W G R ILL C O M B IN AT IO N M IC R O W AV E EN E R G Y O U TP U T M IC R O W AV E FR E Q U EN C Y 2450M H z O UT S ID E D IM EN S IO NS (W X H X D) 465 x 279 x 354 m m (18.3 x 11.0 x 13.9 in.) 495 x 294 x 384 m m (19.5 x 11.6 x 15.1 in.) C AV IT Y D IM E N S IO N S (W X H X D ) 290 x 220 x 306 m m (11.4 x 8.
EXTERNAL VIEW 1. OUTER DIMENSION(KOR-63B5/KOR-86B5) 2. FEATURE DIAGRAM 1. Safety interlock system 2. D oor view ing screen - A llow s view ing of food. The screen is designed so that light can pass through, but not the m icrow ave. 3. D oor hook - W hen the door is closed, it w ill autom atically shut. If the door is opened w hile the oven is operating, the m agnetron will im m ediately stop operating. 4. O ven cavity 5.
INSTALLATION 1. Steady, flat location This m icrow ave oven should be set on a steady, flat surface. This m icrow ave oven is designed for counter top use only. 2. Leave space behind and side A ll air vents should be kept a clearance. If all vents are covered during operation, the oven m ay overheat and, eventually, cause failure. 3. A w ay 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.
OPERATIONS AND FUNCTIONS 1. C onnect the m ain lead to an electrical outlet. 2. A fter placing the food in a suitable container, open the oven door and put it on the glass tray. The glass tray m ust alw ays be in place during cooking. 3. C lose the door securely. 4. C hoose cooking pow er level by setting V.P.C knob to the desired position. R efer to cookbook for recom m ended power levels. 5. D eterm ine cooking tim e. C onsult cookbook for recipe tim ing.
DISASSEMBLY AND ASSEMBLY Cautions to be observed when trouble shooting U nlike m any other appliances, the m icrow ave oven is high-voltage, high-current equipm ent. It is com pletely safe during norm al operation. H ow ever, carelessness in servicing the oven can result in an electric shock or possible danger from a short circuit. You are asked to observe the follow ing precautions carefully. 1. A lw ays rem ove the pow er plug from the outlet before servicing. 2.
DISASSEMBLY AND ASSEMBLY 1. To rem ove cabinet 1) R em ove three screws on cabinet back. 2) P ush the cabinet backw ard. 2. To rem ove door assem bly 1) R em ove a screw w hich secure the stopper hinge top. 2) R em ove the door assem bly from top plate of cavity. 3) R everse the above for reassem bly. NOTE A fter replacing the door assem bly, perform a check of correct alignm ent w ith the hinge and cavity front plate. 3. To rem ove door parts (1) K OR -63B 50S REF.
DISASSEMBLY AND ASSEMBLY (2) K OR -86B 50S REF.NO P ART CODE A 01 3512202270 F RA M E DO O R A BS X R -401 H -2938 1 A 02 3517003150 B AR R IE R-S C R EE N *O A CR YL 1 A 03 3515304410 S UP P O RT ER B A RR -S *O PP 1 A 04 3515204100 S TO PP E R HIN G E *T A S K O R -63150S 1 A 05 3511705620 D O O R W E LD AS K O R -81250S 1 A 06 3517002900 B AR R IE R-S C R EE N *I P O LYE S T E R T 0.
DISASSEMBLY AND ASSEMBLY 5. To rem ove control panel parts (1) K OR -63B 50S REF.
DISASSEMBLY AND ASSEMBLY 1) R em ove the screw which secure the control panel, push up tw o snap fits and draw forw ard the control panel assem bly. 2) R em ove the door open lever from the control panel. 3) R em ove tw o screw s w hich secure the tim er assem bly. 4) R em ove the tim er assem bly. 5) P ull out the tim er knob from the tim er. 6) P ull out the tim er coupler from the tim er. 7) R em ove the screw which secure the V.P.C coupler. 8) P ull out the V.P.C coupler, V.P.
DISASSEMBLY AND ASSEMBLY NOTE N ever install the m agnetron w ithout the m etallic gasket plate w hich is packed with each m agnetron to prevent m icrow ave leakage. W henever repair w ork is carried out on m agnetron, check the m icrow ave leakage. It shall not exceed 4m W /cm 2 for a fully assem bled oven w ith door norm ally closed. 8. To rem ove w ind guide assembly 1) R em ove a screw for earthing. 2) R em ove the noise filter from the w ind guide.
INTERLOCK MECHANISM AND ADJUSTMENT The door lock m echanism is a device w hich has been specially designed to com pletely elim inate m icrow ave radiation w hen the door is opened during operation, and thus to perfectly prevent the danger resulting from the leakage of m icrow ave. 1. Primary interlock sw itch W hen the door is closed, the hook locks the oven door. If the door is not closed properly, the oven w ill not operate. W hen the door is closed, the hook pushes the button of the m icroswitch.
TROUBLE SHOOTING GUIDE Following the procedures below to check if the oven is defective or not 1. C heck grounding before checking trouble. 2. B e careful of the high voltage circuit. 3. D ischarge the high voltage capacitor. 4. W hen checking the continuity of the sw itches, fuse or high voltage transform er, disconnect one lead w ire from these parts and then check continuity w ith the A C plug rem oved. To do otherw ise m ay result in a false reading or dam age to your m eter.
TROUBLE SHOOTING GUIDE Does the fan m otor work when you shut the door and turn the timer? YE S NO Does the oven lam p light? Does the turntable turn? Replace or repair oven lamp, turntable motor. YE S Norm al reading should be approx. 0Ω If m icrowave do not oscillate, check continuity of filament of m agnetron. NO Continuity Check continuity filament tap (3.3V) of high voltage. NO Continuity Replace high voltage transform er.
MEASUREMENT AND TEST 1. MEASUREMENT OF THE MICROWAVE POWER OUTPUT M icrowave output pow er can be checked by indirectly m easuring the tem perature rise of a certain am ount of w ater exposed to the m icrow ave as directed below. PROCEDURE 1. M icrow ave pow er output m easurem ent is m ade w it the m icrow ave oven supplied at rated voltage and operated at its m axim um m icrow ave pow er setting w ith a load of 1000 ± 5cc of potable w ater. 2.
MEASUREMENT AND TEST 2. MICROWAVE RADIATION TEST WARNING M ake sure to check the m icrow ave leakage before and after repair of adjustm ent. A lw ays start m easuring of an unknow n field to assure safety for operating personnel from m icrow ave energy. D o not place your hands into any suspected m icrow ave radiation field unless the safe density level is known. C are should be taken not to place the eyes in direct line w ith the source of m icrow ave energy.
MEASUREMENT AND TEST 3. COMPONENT TEST PROCEDURE H igh 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. B efore touching any oven com ponents or w iring, alw ays unplug the oven from its pow er source and discharge the capacitor. 1. H igh voltage transform er (1) R em ove connections from the transform er term inals and check continuity.
WIRING DIAGRAM
EXPLODED VIEW AND PARTS LIST 1. DOOR ASSEMBLY Refer to Disassembly and assembly. 2. CONTROL PANEL ASSEMBLY Refer to Disassembly and assembly. 3.
EXPLODED VIEW AND PARTS LIST (1) KOR-63B50S REF. NO. PART CODE A 00 3511710330 DOOR AS K O R -63B50S O B 00 3516719620 C O N TR O L-PA NE L A S K O R -63B50S O F 01 3510801310 C A B INE T P CM T 0.
EXPLODED VIEW AND PARTS LIST REF. NO. PART CODE F 30 3515201101 S TO P P E R H IN G E *U S CP -1 T 2.
EXPLODED VIEW AND PARTS LIST 2) KOR-86B50S REF. NO. PART CODE A 00 3511710710 DOOR AS K O R -86B50S O B 00 3516720520 C O N TR O L-PA NE L A S K O R -86B50S O F 01 3510801430 C A B INE T P CM T 0.
EXPLODED VIEW AND PARTS LIST REF. NO. PART CODE F 30 3515201101 S TO P P E R H IN G E *U S CP -1 T 2.
