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KitchenAid KEMS377D Manual

KitchenAid KEMS377D Manual

Built-in microwave / oven combination
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KAC-25
TECHNICAL EDUCATION
BUILT-IN
MICROWAVE / OVEN
COMBINATION
JOB AID 4317316

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  • Page 1 KAC-25 TECHNICAL EDUCATION BUILT-IN MICROWAVE / OVEN COMBINATION JOB AID 4317316...

  • Page 2: Goals And Objectives

    FORWARD This Job Aid, “KitchenAid Built-In Microwave/Oven Combination,” (Part No. 4317316), provides the technician with information on servicing the KitchenAid Built-In Microwave/Oven Combina- tion. It is to be used as a training Job Aid and Service Manual. For specific information on the model being serviced, refer to the “Use and Care Guide,”...

  • Page 3: Table Of Contents

    Precautions To Be Observed Before And During Servicing To Avoid Possible Exposure To Excessive Microwave Energy ........1-4 R.F. Leakage Test ....................... 1-5 KitchenAid Model & Serial Number Designations ............... 1-6 Model & Serial Number Label & Tech Sheet Locations ............1-7 Specifications ........................1-8 KitchenAid Built-In Microwave Warranty ................
  • Page 4 Page Removing A Halogen Lamp Assembly ................. 2-34 Removing The Meat Probe Jack .................. 2-35 Removing The Rear Panels ..................2-36 Removing The Convection Bake Element & Fan Motor Assembly ......2-37 Removing The Lower Blower Motor Assembly ............2-39 Removing The Oven Shutdown Thermal Fuse &...

  • Page 5: Important Safety Information

    GENERAL IMPORTANT SAFETY INFORMATION Your safety and the safety of others is very important. For continued protection against radiation Important safety messages have been pro- emission, replace only with these types of vided in this Job Aid. Always read and obey all switches: Primary (Interlock) Switch: SZM-V16- safety messages.

  • Page 6: Grounding Instructions

    Consult a qualified electrician or serviceman if WARNING the grounding instructions are not completely understood, or if doubt exists as to whether the microwave oven is properly grounded. Do not ELECTRICAL SHOCK HAZARD use an extension cord. If the power supply cord Improper use of the grounding plug can is too short, have a qualified electrician or result in a risk of electric shock.

  • Page 7: Warning To Service Technicians

    WARNING TO SERVICE TECHNICIANS To avoid possible exposure to microwave ra- KitchenAid microwave ovens have a monitor- diation or energy, visually check the oven for ing system designed to assure proper opera- damage to the door and door seal before tion of the safety interlock systems.

  • Page 8: Precautions To Be Observed Before And During Servicing To Avoid Possible Exposure To Excessive Microwave Energy

    PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY Do not operate or allow the oven to be the magnetron, wave guide or transmis- operated with the door open. sion line, and cavity for proper alignment, integrity, and connections.

  • Page 9: R.f. Leakage Test

    R.F. LEAKAGE TEST EQUIPMENT NOTE: Enter leakage readings in space BE- FORE and AFTER on the service document. • Electromagnetic energy leakage monitor (NARDA 8100B, HOLADAY H 1501 ). All microwave ovens exceeding the emission level of 4 mw/cm must be reported to Dept. of •...

  • Page 10: Kitchenaid Model & Serial Number Designations

    KITCHENAID MODEL & SERIAL NUMBER DESIGNATIONS MODEL NUMBER MODEL NUMBER INTERNATIONAL SALES IND. OR MARKETING CHANNEL IF PRESENT PRODUCT GROUP K = KITCHENAID BRAND PRODUCT IDENTIFICATION EB = ELECTRIC BUILT-IN OVEN EH = ELECTRIC BUILT-IN HI SPEED COMBO EM = ELECTRIC BUILT-IN MICRO COMBO...

  • Page 11: Model & Serial Number Label & Tech Sheet Locations

    MODEL & SERIAL NUMBER LABEL AND TECH SHEET LOCATIONS The Model/Serial Number label and Tech Sheet locations are shown below. Tech Sheet Location (Below Top Front Cover) Model & Serial Number Location...

  • Page 12: Specifications

    SPECIFICATIONS KEMS377D KEMS307D KEMS378G KEMS308G Model Number Colors Available MW/BI Combo MW/BI Combo MW/BI Combo MW/BI Combo Model Description 27" 30" 27" 30" Size-Configuration Dimensions/Specifications 42 3/8" 42 3/8" 42 3/8" 42 3/8" Overall Height (in) 26 3/4" 29 3/4"...
  • Page 13 KEMC378H KEMC308H KEMS378G KEMS377G Model Number BL,WH, BT, BL, BT, WH BL, WH AL, BL, BS, BT, WH Colors Available MW/BI Combo MW/BI Combo MW/BI Combo MW/BI Combo Model Description 27" 30" 27" 27" Size-Configuration Dimensions/Specifications 42 3/8" 42 3/8" 42 3/8"...
  • Page 14 KEMI371G KEMI301G KEMS307G Model Number BL, WH BL, WH AL, BL, BS, BT, WH Colors Available MW/BI Combo MW/BI Combo MW/BI Combo Model Description 27" 30" 30" Size-Configuration Dimensions/Specifications 42 3/8" 42 3/8" 42 3/8" Overall Height (in) 26 3/4" 29 3/4"...
  • Page 15 KEMS308G KEHC379J KEHC309J Model Number BL, WH BL, BT, SS, WH BL, BT, SS, WH Colors Available MW/BI Combo MW/BI Combo MW/BI Combo Model Description 30" 27" 30" Size-Configuration Dimensions/Specifications 42 3/8" 42 3/8" 42 3/8" Overall Height (in) 29 3/4" 26 3/4"...

  • Page 16: Kitchenaid Built-In Microwave Warranty

    Purchase. manship. KITCHENAID AND KITCHENAID CANADA DO NOT ASSUME ANY RESPONSIBILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. Some states or provinces do not allow the exclusion or limitation of incidental or consequential damages, so this exclusion or limitation may not apply to you. This warranty gives specific legal rights and you may also have other rights which vary from state to state or province to province.

  • Page 17: Component Access

    COMPONENT ACCESS This section instructs you on how to service each component inside the Built-In Microwave/ Oven Combination. The Component Access is divided into three sections: • Oven Cabinet Components (page 2-1) • Microwave Oven Components (page 2-8) • Lower Oven Components (page 2-30) Refer to the appropriate section for the component you are servicing.

  • Page 18: Removing The Oven Control & Display Boards And The Touch Panel Assembly

    REMOVING THE OVEN CONTROL & DISPLAY BOARDS AND THE TOUCH PANEL ASSEMBLY Remove the screws from the oven control WARNING panel. ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Replace all panels before operating. Failure to do so could result in death or electrical shock.
  • Page 19 To remove the oven control & display REASSEMBLY NOTE: When you reinstall the boards: oven control panel, use the following proce- dure (refer to the photos on the previous page, a) Remove the seven mounting screws. as necessary): b) Lift the ends of the locking arm and Reconnect the wiring to the control board disconnect the ribbon cable from its terminals.

  • Page 20: Removing The Low Voltage Transformer, The Light Power Supplies, The Line Fuse & Fuseholder, & Suppressor Board

    REMOVING THE LOW VOLTAGE TRANSFORMER, THE LIGHT POWER SUPPLIES, THE LINE FUSE & FUSEHOLDER, & SUPPRESSOR BOARD To remove the low voltage transformer: WARNING a) Disconnect the 10-hole connector from the control board at P17. ELECTRICAL SHOCK HAZARD b) Remove the mounting screw at the top Disconnect power before servicing.
  • Page 21 To remove the line fuse & fuseholder: To remove the suppressor board: a) Unsnap the line fuse from the fuseholder a) Remove the hex nuts from the black clips and remove it. and white wires and remove the wires from the screw terminals. b) Disconnect the wires from the termi- nals.

  • Page 22: Removing The Upper Blower Motor Assembly

    REMOVING THE UPPER BLOWER MOTOR ASSEMBLY Remove the four cabinet mounting screws WARNING (2 on each side), and pull the oven out of its mounting location so that you can ac- ELECTRICAL SHOCK HAZARD cess the back. Disconnect power before servicing. Replace all panels before operating.
  • Page 23 Remove the two top screws from the rear 10. Disconnect the two wires from the blower cover and remove the air vent cover. motor terminals. Screw Air Vent Cover Screw 2 Wires Blower Motor Blower Mounting Bracket Screw (1 of 2) 11.

  • Page 24: Microwave Oven Components

    MICROWAVE OVEN COMPONENTS Convection Fan Motor Convection Convection Element Thermal Fuse High Voltage Rectifier Line Fuse Cavity Thermal Fuse High Voltage Halogen Lamp Capacitor Convection High Voltage Temperature Transformer Sensor Magnetron Mag. Thermal Fuse Air Vent Solenoid Primary Air Pressure Interlock Switch Relief Valve &...
  • Page 25 Remove the three screws from the upper Disconnect the two red LOAD wires from air vent and remove the air vent. the microwave light power supply, the 6- pin connector, and the green ground wire Upper Air Vent in the top of the oven cabinet. Ground Wire 3 Air Vent Screws Microwave Light...

  • Page 26: Removing The Primary & Secondary Interlock And Monitor Switches, And The Air Pressure Relief Valve

    REMOVING THE PRIMARY & SECONDARY INTERLOCK AND MONITOR SWITCHES, AND THE AIR PRESSURE RELIEF VALVE c) Remove the wires from the switch ter- WARNING minals. ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Replace all panels before operating. Air Pressure Failure to do so could result in death or Relief Valve electrical shock.
  • Page 27 To remove the primary interlock and d) Disconnect the wires from the primary monitor switches: interlock and monitor switch terminals. A switch is mounted on both sides of a) Pull the microwave oven out of the the bracket. oven cabinet approximately 6˝ so you can access the switches (see pages 2-8 &...

  • Page 28: Removing The Grill Thermal Fuse And The Grill Element Assembly

    REMOVING THE GRILL THERMAL FUSE AND THE GRILL ELEMENT ASSEMBLY To remove the grill thermal fuse: WARNING a) Disconnect the two wires from the ter- minals. ELECTRICAL SHOCK HAZARD Grill Thermal Disconnect power before servicing. Fuse Screws Replace all panels before operating. Failure to do so could result in death or electrical shock.
  • Page 29 b) Remove the two T-10 torx screws from c) Slide the grill element assembly to the the bracket over the left end of the grill left and release the slots from the lock- element assembly and raise the bracket ing tabs. NOTE: It may take a moderate slightly.

  • Page 30: Removing The Convection Temperature Sensor, The Halogen Lamp, And The Cavity Thermal Fuse

    REMOVING THE CONVECTION TEMPERATURE SENSOR, THE HALOGEN LAMP, AND THE CAVITY THERMAL FUSE To remove the convection temperature WARNING sensor: a) Remove the two T-10 torx screws from ELECTRICAL SHOCK HAZARD the plate over the left end of the grill element bracket and remove the plate.
  • Page 31 To remove the halogen lamp: To remove the cavity thermal fuse: a) Unclip the wire retainer and remove it. a) Disconnect the wires from the termi- nals. b) Remove the T-10 torx screw from the cavity thermal fuse. Cavity Thermal Fuse Screw Wire Retainer b) Remove the lamp from the holder and...

  • Page 32: Removing The Convection Thermal Fuse, Convection Element, And Convection Fan Motor

    REMOVING THE CONVECTION THERMAL FUSE, CONVECTION ELEMENT, AND CONVECTION FAN MOTOR To remove the convection element: WARNING a) Disconnect the wires from the termi- nals. ELECTRICAL SHOCK HAZARD b) Remove the four T-10 torx screws from Disconnect power before servicing. the mounting cover.
  • Page 33 To remove the convection fan motor: d) Remove the three T-10 torx screws from the insulation cover and remove a) Remove the convection element (see the cover and insulation. step 5). NOTE: It is not necessary to Insulation remove the convection element to re- Insulation Cover move the fan motor.

  • Page 34: Removing The Cooling Fan Motor & Air Vent Solenoid

    REMOVING THE COOLING FAN MOTOR & AIR VENT SOLENOID Position the unit with the high voltage WARNING component side facing you. Pull the cooling fan assembly out of the ELECTRICAL SHOCK HAZARD unit. Disconnect power before servicing. To remove the cooling fan motor: Replace all panels before operating.
  • Page 35 d) Remove the T-10 torx screws from the The microwave oven component described on fan motor and remove the motor from this page is shown below. the housing. Fan Motor Torx Screws Air Vent Solenoid 10. To remove the air vent solenoid: a) Disconnect the wires from the termi- nals.

  • Page 36: Removing The Magnetron Thermal Fuse And The Magnetron

    REMOVING THE MAGNETRON THERMAL FUSE AND THE MAGNETRON To remove the magnetron thermal fuse: WARNING a) Remove the wires from the thermal fuse cover clips. ELECTRICAL SHOCK HAZARD b) Remove the T-10 torx screw from the Disconnect power before servicing. thermal fuse cover and remove the Replace all panels before operating.
  • Page 37 To remove the magnetron: d) Disconnect the two filament wires from the magnetron terminals. a) Remove the magnetron thermal fuse (see step 5). Filament Wires b) Remove the T-16 torx screws (1 each) from the left and right air ducts. Left Air Duct Screw Right Air Duct Screw Screw (1 of 4)

  • Page 38: Removing The High Voltage Transformer

    REMOVING THE HIGH VOLTAGE TRANSFORMER Remove the T-16 torx screw from the air WARNING duct, unclip the two wires, and remove the duct. Screw Air Duct Wire Clip ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Replace all panels before operating. Failure to do so could result in death or electrical shock.
  • Page 39 High Voltage Transformer Remove the two T-10 torx screws from the high voltage transformer, then pull the two base tabs out of the chassis, and remove the high voltage transformer. Base Tab Screws 2-23...

  • Page 40: Removing The Line Fuse & Fuseholder, The High Voltage Rectifier, & High Voltage Capacitor

    REMOVING THE LINE FUSE & FUSEHOLDER, THE HIGH VOLTAGE RECTIFIER, & HIGH VOLTAGE CAPACITOR To remove the line fuse and fuseholder: WARNING a) Remove the line fuse from the fuse- holder. ELECTRICAL SHOCK HAZARD b) Remove the wires from the fuseholder Disconnect power before servicing.
  • Page 41 c) Unclip the wires from the mounting e) Remove the high voltage rectifier lead bracket clip. from the high voltage capacitor termi- nal. f) Remove the mounting screw from the capacitor clamp and remove the high voltage rectifier and capacitor from the Bracket Arm mounting bracket.

  • Page 42: Removing The Turntable Motor

    REMOVING THE TURNTABLE MOTOR Remove the T-10 torx screws from the WARNING turntable motor and remove the motor. Wires ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Replace all panels before operating. Failure to do so could result in death or electrical shock.

  • Page 43: Removing The Oven Door Handle & Front Door Glass

    REMOVING THE OVEN DOOR HANDLE & FRONT DOOR GLASS CAUTION: When you remove the front door WARNING glass and handle in the next step, be careful when you remove the two screws that hold the assembly together. Hold the door open while ELECTRICAL SHOCK HAZARD you remove the screws;...

  • Page 44: Removing The Oven Door & The Inner Glass

    REMOVING THE OVEN DOOR & THE INNER GLASS Remove the T-10 torx shoulder screws WARNING from the door stops (1 on each side). T-10 Torx ELECTRICAL SHOCK HAZARD Shoulder Screw Right Door Stop Disconnect power before servicing. Replace all panels before operating. Failure to do so could result in death or electrical shock.
  • Page 45 Remove the four indicated T-10 torx screws Pull the brackets out of the oven slots and from the bottom of the door brackets. remove the door assembly from the micro- wave. Door Brackets If you are replacing the oven door and inner glass assembly, remove the front door glass and the handle (see page 2-27 for the procedure).

  • Page 46: Lower Oven Components

    LOWER OVEN COMPONENTS Components Accessible From The Front Lower Door Latch Assembly Oven Temperature Sensor Broil Element Left Halogen Lamp Meat Probe Jack (Side Access) Right Halogen Lamp Convection Bake Element Components Accessible From The Rear Lower Blower Motor Assembly Oven Shutdown Thermal Fuse Convection Fan Motor...

  • Page 47: Removing The Lower Oven Door Latch Assembly

    REMOVING THE LOWER OVEN DOOR LATCH ASSEMBLY WARNING Use an angled screwdriver and remove the two screws from the lower oven door latch assembly. ELECTRICAL SHOCK HAZARD Screw Screw Disconnect power before servicing. Replace all panels before operating. Failure to do so could result in death or electrical shock.

  • Page 48: Removing The Broil Element

    REMOVING THE BROIL ELEMENT Remove the two front bracket screws and WARNING two rear bracket screws from the broil element. ELECTRICAL SHOCK HAZARD Front Bracket Screws Disconnect power before servicing. Replace all panels before operating. Failure to do so could result in death or electrical shock.

  • Page 49: Removing The Oven Temperature Sensor

    REMOVING THE OVEN TEMPERATURE SENSOR Disconnect the electrical power to the WARNING microwave/oven combination. Remove the racks from inside the oven. ELECTRICAL SHOCK HAZARD Remove the two mounting screws from Disconnect power before servicing. the oven temperature sensor and pull the Replace all panels before operating.

  • Page 50: Removing A Halogen Lamp Assembly

    REMOVING A HALOGEN LAMP ASSEMBLY Pull the halogen bulb out of the socket. WARNING ELECTRICAL SHOCK HAZARD Halogen Bulb Disconnect power before servicing. Replace all panels before operating. Failure to do so could result in death or electrical shock. CAUTION: When you work on the microwave/ oven combination, be careful when handling Socket Assembly the sheet metal parts.

  • Page 51: Removing The Meat Probe Jack

    REMOVING THE MEAT PROBE JACK Remove the meat probe jack access panel WARNING from the right side of the unit. Use a pair of small cutters to clip the bridge. ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Replace all panels before operating. Failure to do so could result in death or electrical shock.

  • Page 52: Removing The Rear Panels

    REMOVING THE REAR PANELS To remove the bottom rear panel, remove WARNING the eleven screws. ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Replace all panels before operating. Failure to do so could result in death or Top Rear Panel electrical shock. CAUTION: When you work on the microwave/ oven combination, be careful when handling the sheet metal parts.

  • Page 53: Removing The Convection Bake Element & Fan Motor Assembly

    REMOVING THE CONVECTION BAKE ELEMENT & FAN MOTOR ASSEMBLY position the cover with the notch as shown WARNING when you reinstall it. ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Replace all panels before operating. Convection Cover Failure to do so could result in death or electrical shock.
  • Page 54 To remove the convection fan motor: f) Remove the two rear convection fan motor mounting screws from the oven, a) If not already done, remove the con- and remove the motor from the rear of vection cover and the convection bake the oven.

  • Page 55: Removing The Lower Blower Motor Assembly

    REMOVING THE LOWER BLOWER MOTOR ASSEMBLY Remove the three mounting screws and WARNING the air vent screw from the blower motor assembly and remove the assembly from the oven. ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Replace all panels before operating. Failure to do so could result in death or electrical shock.

  • Page 56: Removing The Oven Shutdown Thermal Fuse & Hidden Bake Element

    REMOVING THE OVEN SHUTDOWN THERMAL FUSE & THE HIDDEN BAKE ELEMENT To remove the oven shutdown thermal WARNING fuse: a) Remove the two screws from the oven ELECTRICAL SHOCK HAZARD shutdown thermal fuse and remove the fuse from the rear of the oven. Disconnect power before servicing.
  • Page 57 b) Bend the cover flanges down as far as e) Remove the four mounting bracket they will go. screws and the two hidden bake ele- ment bracket screws. Bend Cover Bend Cover Flange Down Flange Down Remove Two Screws Remove Four Screws c) Use a pen knife or a single-edged razor blade and cut the insulation blanket, as f) Carefully pull the hidden bake element...

  • Page 58: Removing The Oven Door

    REMOVING THE OVEN DOOR CAUTION: When you work on the microwave/ To reinstall the oven door: oven combination, be careful when handling Grasp the sides of the door and tilt it back the sheet metal parts. Sharp edges may be at a slight angle, then insert the hinge present, and you can cut yourself if you are not hangers into the hinge slots as far as they...

  • Page 59: Removing The Oven Door Glass, Hinges, & Handle

    REMOVING THE OVEN DOOR GLASS, HINGES, & HANDLE To remove the outer door glass: CAUTION: When you work on the microwave/ oven combination, be careful when handling a) Remove the three outer glass holder the sheet metal parts. Sharp edges may be screws and two outer glass bracket present, and you can cut yourself if you are not screws from the door liner.
  • Page 60 To remove the hinges and the inner d) Remove the insulation and the inner door glass: door glass. NOTE: You will have to remove both hinges to remove the inner door glass from the oven door liner. a) Lift either side of the door liner, remove Inner Door Glass the two door hinge screws, and remove the hinge.

  • Page 61: Removing The Oven Door Gasket

    REMOVING THE OVEN DOOR GASKET Pull the ends of the gasket out of the liner CAUTION: When you work on the microwave/ holes. oven combination, be careful when handling the sheet metal parts. Sharp edges may be Gasket Clips present, and you can cut yourself if you are not careful.
  • Page 62 — NOTES — 2-46...

  • Page 63: Component Testing

    COMPONENT TESTING Before testing any of the components, perform • Check all connections before replacing com- the following checks: ponents, looking for broken or loose wires, failed terminals, or wires not pressed into • The most common cause for control failure is connectors far enough.

  • Page 64: Main Line Fuse

    WARNING WARNING ELECTRICAL SHOCK HAZARD ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Disconnect power before servicing. Replace all panels before operating. Replace all panels before operating. Failure to do so could result in death or Failure to do so could result in death or electrical shock.

  • Page 65: The Microwave Oven Components

    THE MICROWAVE OVEN COMPONENTS WARNING WARNING ELECTRICAL SHOCK HAZARD ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Disconnect power before servicing. Replace all panels before operating. Replace all panels before operating. Failure to do so could result in death or Failure to do so could result in death or electrical shock.

  • Page 66: Upper Blower Motor

    WARNING WARNING ELECTRICAL SHOCK HAZARD ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Disconnect power before servicing. Replace all panels before operating. Replace all panels before operating. Failure to do so could result in death or Failure to do so could result in death or electrical shock.

  • Page 67: Convection Temperature Sensor

    Refer to page 2-14 for the procedure for servic- WARNING ing the convection temperature sensor. Disconnect the electrical power to the ELECTRICAL SHOCK HAZARD microwave/oven combination. Disconnect power before servicing. Disconnect the convection temperature Replace all panels before operating. sensor connector from the oven control board.

  • Page 68: Cavity, Grill, Convection, & Magnetron Thermal Fuses

    Refer to the cavity thermal fuse (page 2-14), WARNING the grill thermal fuse (page 2-12), the convec- tion thermal fuse (page 2-16), and the magne- tron thermal fuse (page 2-20) for the servicing ELECTRICAL SHOCK HAZARD procedures. Disconnect power before servicing. Disconnect the electrical power to the Replace all panels before operating.

  • Page 69: Convection Element

    WARNING WARNING ELECTRICAL SHOCK HAZARD ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Disconnect power before servicing. Replace all panels before operating. Replace all panels before operating. Failure to do so could result in death or Failure to do so could result in death or electrical shock.
  • Page 70 High Voltage Rectifier (Diode) WARNING ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Replace all panels before operating. Anode Failure to do so could result in death or Cathode electrical shock. LINE FUSE, HIGH VOLTAGE To test the high voltage rectifier: RECTIFIER &...

  • Page 71: Air Vent Solenoid

    WARNING WARNING ELECTRICAL SHOCK HAZARD ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Disconnect power before servicing. Replace all panels before operating. Replace all panels before operating. Failure to do so could result in death or Failure to do so could result in death or electrical shock.

  • Page 72: High Voltage Transformer

    WARNING WARNING ELECTRICAL SHOCK HAZARD ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Disconnect power before servicing. Replace all panels before operating. Replace all panels before operating. Failure to do so could result in death or Failure to do so could result in death or electrical shock.

  • Page 73: The Lower Oven Components

    THE LOWER OVEN COMPONENTS Disconnect the electrical power to the WARNING microwave/oven combination. Disconnect the wires from the door latch ELECTRICAL SHOCK HAZARD assembly component under test. Disconnect power before servicing. Set the ohmmeter to the R x 1 scale. Replace all panels before operating.

  • Page 74: Lower Blower Motor

    WARNING WARNING ELECTRICAL SHOCK HAZARD ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Disconnect power before servicing. Replace all panels before operating. Replace all panels before operating. Failure to do so could result in death or Failure to do so could result in death or electrical shock.

  • Page 75: Convection Bake Element

    WARNING WARNING ELECTRICAL SHOCK HAZARD ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Disconnect power before servicing. Replace all panels before operating. Replace all panels before operating. Failure to do so could result in death or Failure to do so could result in death or electrical shock.

  • Page 76: Broil Element

    WARNING WARNING ELECTRICAL SHOCK HAZARD ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Disconnect power before servicing. Replace all panels before operating. Replace all panels before operating. Failure to do so could result in death or Failure to do so could result in death or electrical shock.

  • Page 77: Oven Shutdown Thermal Fuse

    Disconnect the electrical power to the WARNING microwave/oven combination. Disconnect the wires from the oven shut- ELECTRICAL SHOCK HAZARD down thermal fuse terminals. Disconnect power before servicing. Set the ohmmeter to the R x 1 scale. Replace all panels before operating. Touch the ohmmeter leads to the oven Failure to do so could result in death or shutdown thermal fuse terminals.
  • Page 78 — NOTES — 3-16...

  • Page 79: Diagnosis & Troubleshooting

    DIAGNOSIS & TROUBLESHOOTING • For combo ovens, the failure code is dis- FAILURE / ERROR DISPLAY CODES played on the side of the display that corre- • Always disconnect power before touching sponds to the oven with the faulty part (upper any internal parts in the oven.

  • Page 80: Microwave Oven Relay Logic

    MICROWAVE OVEN RELAY LOGIC LOWER OVEN RELAY LOGIC MODES MODES MICRO. FULL PWR O O O MICRO. VAR. PWR MANUAL CRISP BAKE GRILL BROIL CLEAN PREHEAT-BAKE RELAY LOGIC KEY + + O PREHEAT-CLEAN O = OFF PREHEAT-BROIL X = ON = CYCLING (MAX.

  • Page 81: Wiring Diagrams & Strip Circuits

    WIRING DIAGRAMS & STRIP CIRCUITS SCHEMATIC DIAGRAM 1 PART NUMBER 8300283 REV. D...

  • Page 82: Schematic Diagram

    SCHEMATIC DIAGRAM 2 PART NUMBER 8300542 REV. A...
  • Page 83 SCHEMATIC DIAGRAM 3 PART NUMBER 8300543 REV. A...
  • Page 84 SCHEMATIC DIAGRAM 4 PART NUMBER 4449034 REV. C...

  • Page 85: Wiring Diagram

    WIRING DIAGRAM PART NUMBER 4449034 REV. C...

  • Page 86: Strip Circuits

    STRIP CIRCUITS BAKE AND PREHEAT BAKE BROIL CLEAN (ABOVE 600˚F) PREHEAT CLEAN (BELOW 600 ˚F)
  • Page 87 MICROWAVE FULL POWER / VARIABLE POWER...
  • Page 88 — NOTES —...
  • Page 89 — NOTES —...
  • Page 90 — NOTES — 5-10...
  • Page 91 WARRANTY INFORMATION SOURCES IN THE UNITED STATES: FOR PRODUCT SPECIFICATIONS AND WARRANTY INFORMATION CALL: FOR WHIRLPOOL PRODUCTS: 1-800-253-1301 FOR KITCHENAID PRODUCTS: 1-800-422-1230 FOR ROPER PRODUCTS: 1-800-447-6737 FOR TECHNICAL ASSISTANCE WHILE AT THE CUSTOMER’S HOME CALL: THE TECHNICAL ASSISTANCE LINE: 1-800-253-2870...

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