Kelvinator KM-200D Service Manual
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Kelvinator KM-200D Service Manual

Kelvinator KM-200D Service Manual

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Service Manual
Microwave Oven
Model: KM-200D

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Summary of Contents for Kelvinator KM-200D

  • Page 1 Service Manual Microwave Oven Model: KM-200D...

  • Page 2: Table Of Contents

    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) M ake the following safety checks on all ovens to be serviced before activating the m agnetron or other m icrow ave source, and m ake repairs as necessary: (1) Interlock operation, (2) Proper door closing, (3) Seal and sealing surfaces (arcing, wear, and other dam age), (4) Dam age to or loosening of hinges and latches, (5) Evidence of dropping or abuse.

  • Page 3: Safety And Precautions

    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 .

  • Page 4: Specifications

    SPECIFICATIONS M O D EL K M -200D PO W E R SU P PLY 230V -50H z, SIN G LE PH A SE W ITH EA R TH IN G M IC R O W AVE 1200W PO W E R G R ILL C O N SU M PTIO N C O M BIN ATIO N...

  • Page 5: External View

    EXTERNAL VIEW 1. OUTER DIMENSION...

  • Page 6: Feature Diagram

    EXTERNAL VIEW 2. FEATURE DIAGRAM 1. DOOR SEAL Door seal surfaces prevent m icrowaves escaping from the oven cavity. 2. DOOR HOOK W hen door is closed, it will autom atically shut off. If door is opened while oven is operating, m agnetron tube will im m ediately stop operating.

  • Page 7: Control Panel

    EXTERNAL VIEW 3. CONTROL PANEL 1. Display - Cooking tim e, power level, indicators and present tim e are displayed. 2. Defrost - Used to defrost foods by weight or tim e. 3. Power - Used to set power level. 4.

  • Page 8: Installation

    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.

  • Page 9: Operations And Functions

    OPERATIONS AND FUNCTIONS 1. Connect the main 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 must always be in place during cooking. 3.

  • Page 10: Disassembly And Assembly

    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 danger from a short circuit. You are asked to observe the following precautions carefully.
  • Page 11 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.
  • Page 12 DISASSEMBLY AND ASSEMBLY 3. To remove door parts. (1) KM-200D REF. NO PA RT CODE PART N AME DESCRIPTION Q TY REMARK A 01 3512203800 FR A M E D O O R A BS X R -401 H -2938...
  • Page 13 DISASSEMBLY AND ASSEMBLY 1) Rem ove the gasket door from door plate. 2) Rem ove the barrier screen inner from door plate. 3) Rem ove the door fram e from door plate. 4) Rem ove the stopper hinge top from door plate. 5) Rem ove the spring and the hook.
  • Page 14 DISASSEMBLY AND ASSEMBLY 5. To remove control panel parts. (1) KM-200D REF. NO PART CODE PART NAME DESCRIPTION Q’ TY REMARK 3515501500 WINDOW DISPLAY PMMA 3516719420 CONTROL PANEL ABS XR-401 H-2938 3516907400 BUTTON FUNCTION 3516907600 BUTTON FUNCTION 3514321400 PCB SUB AS...
  • Page 15 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 tail from the connector of the PCB assem bly.
  • Page 16 DISASSEMBLY AND ASSEMBLY 8. To remove wind guide assembly. 1) Rem ove a screw for earthing. 2) Rem ove the noise filter from the wind guide. 3) Rem ove a screw which secure the wind guide assem bly. 4) Draw forward the wind guide assem bly. 5) Pull the fan from the m otor shaft.

  • Page 17: Interlock Mechanism And Adjustment

    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 switch W hen the door is closed, the hook locks the oven door.

  • Page 18: Trouble Shooting Guide

    TROUBLE SHOOTING GUIDE Following the procedure below to check if the oven is defective or not. 1) Check earthing 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 transform er, disconnect one lead wire from these parts and check continuity with the AC plug removed.
  • Page 19 TROUBLE SHOOTING GUIDE CON DITION CHECK RESULT CAUSE REM EDY R eplace C heck con tinuity of D efective O utlet has m agn etron C ontinuity m agn etron proper voltage Fuse does not blow. R eplace C heck con tinuity of D efective line noise filter board C ontinuity...
  • Page 20 TROUBLE SHOOTING GUIDE ( TROUBLE 3 ) No m icrowave oscillation even though fan m otor rotates. C ON DITIO N C HE C K R ES U LT C AU S E R EM ED Y N o C ontinuity N o m icrow ave C heck continuity of high oscillation...
  • Page 21 TROUBLE SHOOTING GUIDE ( TROUBLE 4 ) The following visual conditions indicate a probable defective touch control circuit or m em brane switch 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 flickering.

  • Page 22: Measurement And Test

    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.

  • Page 23: Microwave Radiation Test

    MEASUREMENT AND TEST 2. MICROWAVE RADIATION TEST CAUTION 1. M ake sure to check the m icrowave leakage before and after repair of adjustm ent. 2. Always start m easuring of an unknown field to assure safety for operating personnel from m icrowave energy. 3.

  • Page 24: Component Test Procedure

    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 unplug the oven from its power source and discharge the capacitor.

  • Page 25: Wiring Diagram

    WIRING DIAGRAM...

  • Page 26: Printed Circuit Board

    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: 230 V / Frequency: 50Hz Term inal Voltage LO AD N O LO A D 4 - 7 A C 12.6 V A C 14.7 V...
  • Page 27 PRINTED CIRCUIT BOARD Measure Point...
  • Page 28 PRINTED CIRCUIT BOARD...
  • Page 29 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 POINT STATE...

  • Page 30: Circuit Diagram

    PRINTED CIRCUIT BOARD 2. P.C.B. CIRCUIT DIAGRAM...

  • Page 31: Location No

    PRINTED CIRCUIT BOARD 3. P.C.B. LOCATION NO (1) KM-200D NAME SYMBOL SPECIFICATION PART CODE Q'TY BUZZER BM-20K 3515600100 C ARRAY 5P(4) 102 M 50V CN4XB-102M C ELECTRO 16V RSS 100uF CEXF1C101V C ELECTRO 25V RSS 1000uF CEXF1E102V CONNECTOR WAFER YW396-02AV...
  • Page 32 PRINTED CIRCUIT BOARD NAME SYMBOL SPECIFICATION PART CODE Q'TY...

  • Page 33: Exploded View And Parts List

    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...
  • Page 34 EXPLODED VIEW AND PARTS LIST (1) KM-200D REF NO PART CO DE PART NAM E DESCR IPTIO N Q'TY A 00 3511710300 D O O R A S K O R -63150S B 00 3516720940 C O NT R O L PAN E L AS...
  • Page 35 EXPLODED VIEW AND PARTS LIST REF NO PART CO DE PART NAM E DESCR IPTIO N Q'TY F 33 4415A 66910 S W M IC R O V P-531A -O F /S ZM -V 16-FA -61 F 34 4415A 17352 S W M IC R O V P-533A -O F S PN O #187 200G F 35...

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