Related Manuals for Electrolux EI24MO45IBA
Summary of Contents for Electrolux EI24MO45IBA
- Page 1 Technical Service Manual Microwave Oven GRAIN DIRECTION (ALL PARTS) Model EI24MO45IBA Publication #5995557591 P/N 316439602 January 2010...
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Page 3: Safe Servicing Practices
All non-insulated electrical terminals, connectors, heaters, etc. are adequately spaced away from all metal parts and panels. • All safety grounds (both internal and external) are correctly and securely connected. • All panels are properly and securely reassembled. © 2009 Electrolux Home Products, Inc. -
Page 4: Table Of Contents
Basic Information This Manual has been prepared to provide Electrolux Service Personnel with Operation and Service Information for Electrolux Microwave Oven EI24MO45IBA. Table of Contents Section 1 Basic Information Section 4 Component Teardown and Testing Safe Servicing Practices .......... Warnings and Cautions ........... - Page 5 THIS SERVICE MANUAL IS INTENDED FOR USE BY PERSONS HAVING ELECTRICAL AND MECHANICAL TRAINING AND A LEVEL OF KNOWLEDGE OF THESE SUBJECTS GENERALLY CONSIDERED ACCEPTABLE IN THE APPLIANCE REPAIR TRADE. ELECTROLUX HOME PRODUCTS CANNOT BE RESPONSIBLE, NOR ASSUME ANY LIABILITY, FOR INJURY OR DAMAGE OF ANY KIND ARISING FROM THE USE OF THIS MANUAL.
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Page 6: Precautions To Be Observed Before And During Servicing To Avoid Possible Exposure To Excessive Microwave Energy
Before servicing an operative unit, perform a microwave emission check as per the Microwave Measurement Procedure outlined in this service manual. If microwave emissions level is in excess of the specified limit, contact ELECTROLUX HOME PRODUCTS, INC. immediately. If the unit operates with the door open, service person should: 1) Tell the user not to operate the oven. -
Page 7: Before Servicing
Basic Information MICROWAVE OVENS CONTAIN CIRCUITRY CAPABLE OF PRODUCING VERY HIGH VOLTAGE AND CURRENT. CONTACT WITH THE FOLLOWING PARTS MAY RESULT IN A SEVERE, POSSIBLY FATAL, ELECTRICAL SHOCK. INVERTER UNIT, THAT INCLUDES HIGH VOLTAGE CAPACITOR, HIGH VOLTAGE POWER TRANSFORMER, HIGH VOLTAGE RECTIFIER, HEAT SINK ETC., AND MAGNETRON, HIGH VOLTAGE HARNESS ETC.. -
Page 8: Microwave Measurement Procedure Usa
Basic Information Microwave Measurement Procedure (USA) A. Requirements: 1) Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven should not exceed 1 mW/cm 2 at any point 5 cm or more from the external surface of the oven, measured prior to acquisition by a purchaser, and thereafter (through the useful life of the oven), 5 mW/cm 2 at any point 5 cm or more from the external surface of the oven. -
Page 9: Microwave Measurement Procedure Canada
Basic Information Microwave Measurement Procedure (Canada) After adjustment of the door switches are completed individually or collectively, switch test and microwave leakage test must be performed with survey instrument and test result must be confirmed to meet the requirement of the performance standard for microwave ovens as under mentioned. -
Page 10: Product Specification
Basic Information Product Specification Item Description Power Requirements (USA)120 Volts / 13.0 Amperes / 1500 Watt 60 Hertz Single phase, 3 wire grounded Power Output 1100 watts (IEC 705 Test Procedure) Operating frequency of 2450MHz Outside Case Dimensions Width 24-5/8” Height 14”... -
Page 11: Grounding Instructions
Basic Information Grounding Instructions Discharging Capacitor High Voltage Warning! This oven is equipped with a three prong grounding plug. It must be plugged into a wall receptacle that is properly Do not attempt to measure any of the high voltages, installed and grounded in accordance with the National this includes the filament voltage of the magnetron. -
Page 12: Oven Diagram
Basic Information Oven Diagram Touch Control Panel Components 1. One touch door open button. Push to open door. 2. Door latches. The oven will not operate unless the door is securely closed. 3. Removable turntable support. 4. Removable turntable. The turntable will rotate clockwise or counterclockwise. -
Page 13: Section 2 Operation
Operation 6. When the door is opened during a cook cycle, the Operating Sequence Description monitor switch, door sensing switch, third door The following is a description of component functions switch, primary switch relay (RY1) and secondary during oven operation. interlock relay are activated with the following results. - Page 14 Operation Figure 2-1. Oven Off Condition Figure 2-2. Oven Schematic-Microwave Cooking Condition...
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Page 15: Variable Cooking
Operation Variable Cooking PRIMARY SWITCH, THIRD DOOR SWITCH & DOOR SENSING SWITCH When Variable Cooking Power is programmed, the 120 The primary switch and third door switch mounted volts A.C. is supplied to the power transformer intermit- parallel to each other horizontally in the lower positions of tently through the contacts of relay (RY-2) which is the latch hook, and the door sensing switch is mounted operated by the control unit within a 32 second time... -
Page 16: Turntable Motor
Operation TURNTABLE MOTOR 1. The C/T fuse blows when the contacts (COM-NO) of the secondary interlock relay (RY2) and primary The turntable motor rotates the turntable located in interlock switch remain closed with the oven door the bottom of the oven cavity, so that the food on the open and when the monitor switch closes. -
Page 17: Humidity Sensor Circuit
Operation Humidity Sensor Circuit (3) Detector Circuit of Absolute Humidity Sensor Circuit: This detector circuit is used to detect the output (1) Structure of Absolute Humidity Sensor: voltage of the absolute humidity circuit to allow the The absolute humidity sensor includes two LSI to control sensor cooking of the unit. - Page 18 Operation Notes...
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Page 19: Troubleshooting Guide Chart
Troubleshooting and Testing Troubleshooting Guide When troubleshooting the microwave oven, it is helpful to follow the Sequence of Operation in performing the checks. Many of the possible causes of trouble will require that a specific test be performed. These tests are given a procedure letter which will be found in the “Test Procedure “section. - Page 20 Troubleshooting and Testing CK = Check / RE = Replace RE RE A B C D E E F F G H RE RE CK I CK CK CK J K L TEST PROCEDURE PROBLEM Condition Home fuse or circuit breaker blows when power cord is plugged into wall receptacle C/T fuse blows when power cord is...
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Page 21: Test Procedures
Troubleshooting and Testing Test Procedures Procedure Component Test Letter MAGNETRON ASSEMBLY TEST HIGH VOLTAGES ARE PRESENT DURING THE COOK CYCLE, SO EXTREME CAUTION SHOULD BE OBSERVED. DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING. 1. Disconnect the power supply cord. 2. - Page 22 Troubleshooting and Testing Procedure Component Test Letter POWER TRANSFORMER TEST DO NOT TOUCH THE COMPONENTS OF THE POWER TRANSFORMER WHILE POWER TRANSFORMER IS ENERGIZED. IT IS DANGEROUS BECAUSE THIS HAS HIGH VOLTAGE COMPONENTS. (HIGH VOLTAGES ARE PRESENT AT THE HIGH VOLTAGE TERMINAL, SO DO NOT ATTEMPT TO MEASURE THE FILAMENT AND HIGH VOLTAGE.) 1.
- Page 23 Troubleshooting and Testing Procedure Component Test Letter CAVITY TEMPERATURE FUSE TEST 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. (See Warnings and Instructions on page 3-1) 4.
- Page 24 Troubleshooting and Testing Procedure Component Test Letter PRIMARY AND THIRD DOOR SWITCH TEST 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Isolate the switch and connect the ohmmeter to the common (COM.) and normally open (NO) terminal of the switch.
- Page 25 Troubleshooting and Testing Procedure Component Test Letter MONITOR SWITCH TEST 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Before performing this test, make sure that the primary switch is operating properly, according the above Switch Test Procedure.
- Page 26 Troubleshooting and Testing Procedure Component Test Letter The following symptoms indicate a defective key unit. a. When touching the pads, a certain pad produces no signal at all. b. When touching a number pad, two figures or more are displayed. c.
- Page 27 Troubleshooting and Testing Procedure Component Test Letter KEY UNIT TEST 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Isolate the key unit with the control panel frame to be tested. 5.
- Page 28 Troubleshooting and Testing Procedure Component Test Letter 8. Disconnect the power supply cord, and then remove outer case. 9. Open the door and block it open. 10. Discharge high voltage capacitor. 11. Reconnect all leads removed from components during testing. 12.
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Page 29: Section 4 Component Teardown And Testing
Component Teardown and Testing TO PREVENT AN ELECTRIC SHOCK, TAKE THE FOLLOWING PRECAUTIONS: 1. BEFORE WIRING: 1) Disconnect the power supply. 2) Open the door and wedge the door open. 3) Discharge the high voltage capacitor and wait for 60 seconds. 2. -
Page 30: Outer Case Removal
Component Teardown and Testing Outer Case Removal Power Transformer Removal To remove the outer case, proceed as follows; 1. Disconnect the power supply cord and then remove outer case. 1. Disconnect the power supply cord. 2. Open the oven door and block it open. 2. -
Page 31: High Voltage Rectifier And High Voltage Capacitor Removal
Component Teardown and Testing Magnetron Removal 1. Disconnect the power supply cord and then remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. To discharge the high voltage capacitor, wait for 60 seconds and then short-circuit the connection of the high-voltage capacitor (that is the connecting lead of the high-voltage rectifier) against the chassis with the use of an insulated screwdriver. -
Page 32: Oven Lamp And Lamp Socket Removal
Component Teardown and Testing Oven Lamp And Lamp Socket Control Panel Assembly Removal Removal 1. Disconnect the power supply cord and then remove outer case. 1. Disconnect the power supply cord and then remove 2. Open the door and block it open. outer case. -
Page 33: Turntable Motor Removal
Component Teardown and Testing Installation Turntable Motor Removal 1. Remove remaining adhesive on the control panel 1. Disconnect the power supply cord. frame surfaces with a soft cloth soaked in alcohol. 2. Remove turntable and turntable support from oven 2. Make sure that the VFD (Vacuum Fluorescent cavity. -
Page 34: Cooling Fan Motor Removal
Component Teardown and Testing Cooling Fan Motor Removal Coil Groove joint pliers REMOVAL 1. Disconnect the power supply cord and then remove outer case. 2. Open the door and block it open. Stator 3. Discharge high voltage capacitor. Rotor Bracket Rear View To discharge the high voltage capacitor, wait for 60 seconds and then short-circuit the connection of... -
Page 35: Door Sensing Switch/Primary Switch/Third Door Switch And Monitor Switch Removal
Component Teardown and Testing If door sensing switch, primary switch, secondary switch Door Sensing Switch/Primary Switch/ and monitor switch do not operate properly due to a mis- Third Door Switch And Monitor adjustment, the following adjustment should be made. Switch Removal 4. -
Page 36: Door Replacement
Component Teardown and Testing Door Replacement Choke Cover Removal 1. Disconnect the power supply cord. 2. Push the open button and open the door slightly. Insert a putty knife (thickness of about 0.5mm) into Door Frame the gap between the choke cover and door frame as Putty Knife shown in Figure 4-7 to free engaging parts. -
Page 37: Sealer Film
Component Teardown and Testing Upper Oven Upper Hinge Oven Hinge Lower Oven Hinge Lower Oven Hinge Choke Cover Figure 4-8. Door Removal Sealer Film Installation 1. Put the adhesive tape on the backing film of the sealer film as shown in Figure 4-9. 2. - Page 38 Component Teardown and Testing Notes 4-10...
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Page 39: Wiring Diagram
Wiring Diagrams Wiring Diagram... - Page 40 Wiring Diagrams Oven Wiring Schematic Off Condition...
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Page 41: Section 6 Parts List
Parts List Key Unit And Door Assembly... -
Page 42: Parts List
Parts List... - Page 43 Parts List Oven And Cabinet Parts...
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Page 44: Packing And Accessories
Parts List Packing And Accessories TOP PAD ASSEMBLY DOOR PROTECTION SHEET 47 TURNTABLE TRAY PLASTIC BAG TRAY HOLDER OPERATION MANUAL BOTTOM PAD ASSEMBLY TURNTABLE SUPPORT PACKING CASE Non-replaceable items.