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Electrolux EI30SM55JB, Technical & Service Manual

The Electrolux EI30SM55JB Technical & Service Manual is a comprehensive guide for troubleshooting and maintaining your appliance. This invaluable manual can be downloaded from our website for free, allowing you to easily access the information you need to keep your Electrolux EI30SM55JB operating at its best.

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Parts List

 

6-5

93

36

76

84

85

86

87

38

95

82

118

GREASE FILTER(x2)

ACCESSORY ASSEMBLY

CUSHION

INFORMATION

29

UNIT MOUNTING ANGLE

OPERATION MANUAL

WALL TEMPLATE

INSTALLATION INSTRUCTION

TOP TEMPLATE

TURNTABLE TRAY

TRAY PAD

TOP PAD

BOTTOM PAD

PACKING CASE

ACCESSORY HOLDER

WRAP COVER

Non-replaceable items

DOOR PROTECTOR

PACKING SUPPORT

RACK PAD

PROTECTION SHEET

RACK

DAMPER ASSEMBLY

DOOR PAD

CABINET COVER

Packing And Accessories

Summary of Contents for EI30SM55JB

Page 1: ...Publication 5995563474 P N 316439605 April 2010 Technical Service Manual Over The Range Microwave Oven Models EI30SM55JB EI30SM55JS EI30SM55JW ...

Page 2: ......

Page 3: ...ation of any safety device 5 Use ONLY REPLACEMENT PARTS CATALOGED FOR THIS APPLIANCE Substitutions may defeat compliance with Safety Standards Set For Home Appliances 6 GROUNDING The standard color coding for safety ground wires is GREEN or GREEN with YELLOW STRIPES Ground leads are not to be used as current carrying conductors It is EXTREMELY important that the service technician reestablish all ...

Page 4: ...Thermostat 60 C On 2 6 Thermostat 70 C Off 2 6 Antenna Motor 2 6 Hood Lamp 2 6 Touch Control Panel Assembly 2 7 Humidity Sensor Circuit 2 8 Section 3 Troubleshooting and Error Codes Warnings and Cautions 3 1 Troubleshooting Guide Chart 3 2 Test Procedures 3 3 Section 4 Component Teardown and Testing Warnings and Cautions 4 1 Removal Of Oven From Wall 4 2 Hood Louver Removal 4 2 Outer Case Removal ...

Page 5: ...drain the electrostatic charge from your body by touching a known earth ground NEVER OPERATE THE OVEN UNTIL THE FOLLOWING POINTS ARE ENSURED A THE DOOR IS TIGHTLY CLOSED B THE DOOR BRACKETS AND HINGES ARE NOT DEFECTIVE C THE DOOR PACKING IS NOT DAMAGED D THE DOOR IS NOT DEFORMED OR WARPED E THERE IS NO OTHER VISIBLE DAMAGE WITH THE OVEN SERVICING AND REPAIR WORK MUST BE CARRIED OUT ONLY BY TRAINED...

Page 6: ...ion 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 2 Contact Electrolux HOME PRODUCTS INC and Food and Drug Administration s Center for Devices and Ra...

Page 7: ...r case is installed 4 Run the oven and check all functions Microwave ovens should not be run empty To test for the presence of microwave energy within a cavity place a cup of cold water on the oven turntable close the door and set the power to HIGH and then set the microwave timer for two 2 minutes When the two minutes has elapsed timer at zero carefully check that the water is now hot If the wate...

Page 8: ...he water container shall be a low form of 600 ml 20 oz beaker with an inside diameter of approx 8 5 cm 3 1 2 in and made of an electrically nonconductive material such as glass or plastic The placing of this standard load in the oven is important not only to protect the oven but also to insure that any leakage is measured accurately 4 Set the cooking control on Full Power Cooking Mode 5 Close the ...

Page 9: ...rately 4 Set the cooking control on Full Power Cooking Mode 5 Close the door and select a cook cycle of several minutes If the water begins to boil before the survey is completed replace it with 275 ml of cool water C Leakage test with enclosure installed 1 Grasp probe of survey instrument and hold it perpendicular to gap between door and the body of the oven 2 Move the probe slowly not faster tha...

Page 10: ...or Variable Cooking Repetition Rate P HI Full power throughout the cooking time P 90 approx 90 of Full Power P 80 approx 80 of Full Power P 70 approx 70 of Full Power P 60 approx 60 of Full Power P 50 approx 50 of Full Power P 40 approx 40 of Full Power P 30 approx 30 of Full Power P 20 approx 20 of Full Power P 10 approx 10 of Full Power P 0 No power throughout the cooking time Timer on off pad S...

Page 11: ...sure any of the high voltages this includes the filament voltage of the magnetron High voltage is present during any cook cycle Before touching any components or wiring always unplug the oven and discharge the high voltage capacitor See Figure 1 3 2 The high voltage capacitor remains charged about 60 seconds after disconnection Short the negative terminal of the high voltage capacitor to the oven ...

Page 12: ...10 Fan pad Touch the fan pad once for high speed twice for medium speed three times for low speed and four times to turn off the fun 11 Auto Touch control panel 12 Time display Digital display 99 minutes 99 seconds 13 Ventilation openings 14 Removable turntable The turntable will rotate clockwise or counterclockwise Only remove for cleaning 15 Removable turntable support First carefully place the ...

Page 13: ...so all three rollers of the turntable support contact to the flat surface of the turntable glass tray Make sure to remove the tape at the turntable support before operation Because the tape is attached when the product is shipped from the factory Remove this tape before operation Turntable Support Oven Bottom Plate Hole Turntable Support CORRECT WRONG Flat Surface of Turntable Glass Tray Flat Surf...

Page 14: ...1 12 Basic Information Notes ...

Page 15: ...and then into the cavity where the food is placed to be cooked 5 Upon completion of the cooking time the power transformer oven lamp etc are turned off and the generation of microwave energy is stopped The oven will revert to the OFF condition 6 When the door is opened during a cook cycle moni tor switch door sensing switch secondary interlock switch and primary interlock relay are activated with ...

Page 16: ...Operation 2 2 Figure 2 1 Microwave Oven Off Condition Figure 2 2 Oven Schematic Microwave Oven Cooking Condition ...

Page 17: ...oven is set for over 40 minutes at 80 90 or 100 power level after the first 40 minutes the power level will automatically adjust itself to 70 power to avoid overcooking Cook Top Lamp The brightness of the cook top lamp is controlled by the relays RY7 RY8 and RY9 as shown in the following table Power Output Reduction Ventilation Methods 1 VERTICAL VENTING For this venting method hot air rising from...

Page 18: ...king mode by referring to the operation manual 2 The coil of shut off relays RY1 and RY3 are ener gized the oven lamp turntable motor and cooling fan motor are turned on but the power transformer is not turned on 3 After about 32 seconds the relay RY2 is energized The power transformer is turned on microwave energy is produced and first stage is started The 32 seconds is the cooling time required ...

Page 19: ...s operate inversely 3 If the door is opened and the primary interlock relay RY2 and secondary interlock switch contacts fail to open the monitor fuse blows simultaneously with closing of the monitor switch contacts THERMAL CUT OUT CAVITY This thermal cut out is located on the top of the oven cavity It is designed to prevent damage to the oven unit if the food in the oven catches fire due to overhe...

Page 20: ...automatically operation is medium speed The manual operation is a three speed Low Mid High THERMOSTAT 60 C ON This thermostat is located on the right base plate It is designed to automatically turn on the hood fan motor whenever the hot air rising from the conventional range below causes the temperature at the thermostat to rise to 140 F 60 C or higher thus removing this hot air from around microw...

Page 21: ...hen power is supplied 4 Indicator Circuit Indicator element is Fluorescent Display Basically a Fluorescent Display is triode having a cathode a grid and an anode Usually the cathode of a Fluorescent Display is directly heated and the filament serves as cathode The Fluorescent Display has 8 digits 16 segments are used for displaying figures 5 Power Source Circuit This circuit generates voltages nec...

Page 22: ...ol sensor cooking of the unit When the unit is set in the sensor cooking mode 16 seconds clearing cycle occurs then the detector circuit starts to function and the LSI observes the initial voltage available at its AN1 terminal With this voltage given the switches SW1 to SW5 in the LSI are turned on in such a way as to change the resistance values in parallel with R98 R102 Changing the resistance v...

Page 23: ...OVE OUTER CASE 2 OPEN THE DOOR AND BLOCK IT OPEN 3 TO DISCHARGE 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 4 RECONNECT THE LEADS TO THE PRIMARY OF THE POWER TRANSFORMER 5 REINSTALL THE OUTER CASE CABINET 6 RECONNE...

Page 24: ...Troubleshooting and Testing 3 2 ...

Page 25: ...up with 16 oz 453 cc of tap water and measure the temperature of the water with a thermometer or thermocouple temperature tester Stir the thermometer or thermo couple through the water until the temperature stabilizes Record the temperature of the water 2 Place the cup of water in the oven Operate oven at POWER 10 HIGH selecting more than 60 seconds cook time Allow the water to heat for 60 seconds...

Page 26: ...is read in both directions the rectifier is probably defective and should be replaced 5 Reconnect all leads removed from components during testing 6 Reinstall the outer case cabinet 7 Reconnect the power supply cord after the outer case is installed 8 Run the oven and check all functions NOTE Be sure to use an ohmmeter that will supply a forward bias voltage of more than 6 3 volts HIGH VOLTAGE CAP...

Page 27: ... cord after the outer case is installed 8 Run the oven and check all functions MAGNETRON 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 A continuity check across the C T fuse terminals should indicate a closed circuit unless the temperature of the ca...

Page 28: ...COM and normally open NO terminal of the switch The meter should indicate an open circuit with the door open and a closed circuit with the door closed If improper operation is indicated replace the door sensing switch 5 Reconnect all leads removed from components during testing 6 Reinstall the outer case cabinet 7 Reconnect the power supply cord after the outer case is installed 8 Run the oven and...

Page 29: ...ct all leads removed from components during testing 6 Reinstall the outer case cabinet 7 Reconnect the power supply cord after the outer case is installed 8 Run the oven and check all functions BLOWN MONITOR 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 If the ...

Page 30: ...ut terminals should indicate an closed circuit unless the temperature of the thermal cut out reaches approximately 158 F 70 C or more At that temperature the contacts will open The thermal cut out closes automatically at approximately 131 F 55 C 5 Reconnect all leads removed from components during testing 6 Reinstall the outer case cabinet 7 Reconnect the power supply cord after the outer case is ...

Page 31: ...ents during testing 3 Reconnect the power supply cord after the covers are installed 4 Run the oven and check all functions The following symptoms indicate a defective glass touch 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 When touching the pads sometimes a pad produces no signal If the keyboard unit is...

Page 32: ...and oven chassis by using insulation tape 6 After that procedure re connect the power supply cord Testing 7 Disconnect the power supply cord and then reconnect power supply cord Display should show the words ENJOY YOUR OVEN TOUCH CLEAR AND TOUCH CLOCK in the display 8 Wait 3 sec and press the following keys within 20 seconds Power Level then Set Clock then Start add 30 sec then Stop Clear Test mod...

Page 33: ...er The meter should indicate 120 volts if not check oven circuit Shut off Cook and Heater Relays Test These relays are operated by D C voltage Check voltage at the relay coil with a D C voltmeter during the microwave cooking operation DC voltage indicated Defective relay DC voltage not indicated Check diode which is connected to the relay coil If diode is good control unit is defective 8 If any ab...

Page 34: ...ents during testing i Re install the covers j Reconnect the power supply cord after the covers are installed k Run the oven and check all functions 2 Follow the troubleshooting guide given below if indicator does not light up after above check and repairs are finished a Disconnect the power supply cord b Remove the covers c Open the door and block it open d Discharge high voltage capacitor See War...

Page 35: ...spray and turn off before food is properly cooked 8 After the oven is started on sensor cooking condition if the sensor has not detected the vapor of the food ERROR will appear and the oven will shut off Water Load Cooking Test Make sure the oven has been plugged in at least two minutes before checking sensor cook operation The cabinet should be installed and screws tightened 1 Fill approximately ...

Page 36: ... displayed If new sensor dose not operate properly the problem is with the control unit and refer to explanation below CHECKING CONTROL UNIT 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 Disconnect the sensor connector that is mounted to control panel 5 Then connect the ...

Page 37: ...the oven and check all functions 18 Carry out Water load cooking test again and ensure that the oven works properly Sensor Dummy Resistor Circuit NOISE FILTER 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 Disconnect the leads to the primary of the power transformer ...

Page 38: ...Troubleshooting and Testing 3 16 Notes ...

Page 39: ...arge high voltage capacitor before touching any oven components or wiring after removing outer case AVOID POSSIBLE EXPOSURE TO MICROWAVE ENERGY PLEASE FOLLOW INSTRUCTIONS BELOW BEFORE OPERATING THE OVEN 1 Disconnect the power supply cord 2 Make sure that a definite click can be heard when the microwave oven door is unlatched Hold the door in a closed position with one hand then push the door open ...

Page 40: ...the top cabinet 5 Remove the oven from the unit mounting plate and pull the power cord out of the wall cabinet 6 The oven is now free and can be placed on the work surface selected for servicing the oven 7 Installation is the reverse of this procedure Hood Louver Removal 1 Disconnect the power supply cord 2 Open the oven door and block it open 3 Remove the one 1 screw holding the outer case cabine...

Page 41: ...ght base plate 3 Re connect wire leads primary and high voltage to the transformer and filament leads of transformer to magnetron and high voltage capacitor Refer to Pictorial Diagram 4 Re install the capacitor 5 Re install the base cover and the deflector 6 Re install the outer case and check that oven is operating properly To discharge the high voltage capacitor wait for 60 seconds and then shor...

Page 42: ... hood duct to the oven cavity top plate 15 Remove the one 1 screw holding the hood duct to the fan duct 16 Release the 6 pin connector and the 3 pin connector of the main harness A from the hood duct 17 Disconnect the control harness A from the control harness B 18 Disconnect the connector of control harness A from the cavity face plate 19 Remove the hood duct from the oven cavity by lifting it up...

Page 43: ...ly cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Remove two 2 screws holding the chassis support right to the rear and face of the oven cavity flanges 5 Remove the one 1 screw holding the noise filter assembly to the fan duct 6 Disconnect the wire leads from the fan motor 7 Disconnect the high voltage wire leads of the high voltage rectifier...

Page 44: ... fan motor 7 Disconnect the high voltage wire leads of the high voltage rectifier assembly from the magnetron 8 Disconnect filament lead of transformer from magnetron 9 Remove the one 1 screw holding the hood duct to the fan duct and remove the one 1 screw holding the oven cavity top plate to the fan duct 10 Remove the one 1 screw holding the right base plate to fan duct and remove the fan duct as...

Page 45: ...ment lead of the transformer from high voltage capacitor referring to the pictorial diagram 9 Connect high voltage wire from capacitor referring to the pictorial diagram 10 Connect the wire leads to the fan motor referring to the pictorial diagram 11 Re install the outer case Do not hit the fan blade strongly when installed because the bracket may be disfigured Make sure that the fan blade rotates...

Page 46: ...s the connecting lead of the high voltage rectifier against the chassis with the use of an insulated screwdriver Figure 4 6 Oven Lamp Socket Stirrer Cover And Stirrer Fan Installation 1 Put the stirrer antenna on the wave guide to match the stirrer antenna shaft to the center of the stirrer hole 2 Insert the shaft of stirrer antenna to the shaft of antenna motor 3 Rotate the antenna holder to lock...

Page 47: ...her For those models it is possible to check and repair the controls of the touch control panel while keeping it apart from the oven proper in this case you must short both ends of the door sensing switch on PWB of the touch control panel with a jumper which activates an operational state that is equivalent to the oven door being closed As for the sensor related controls of the touch control panel...

Page 48: ...ck it open 3 Discharge high voltage capacitor 4 Remove the control panel assembly referring to the procedure of Control Panel Assembly Control Unit And Key Unit Removal 5 Remove the two 2 screws holding the latch hook to the oven cavity front flange 6 Remove latch hook from the oven cavity front flange 7 Disconnect the wire leads of each switch 8 Remove each switch from the latch hook by pushing t...

Page 49: ... so that the monitor switch is activated with the door closed 7 Secure the screws with washers firmly 8 Check all of the switches operation If any switch has not activated with the door closed loosen screw and adjust the latch hook position After adjustment check the following 1 In and out play of door remains less than 0 5mm when in the latched position First check upper position of latch hook pu...

Page 50: ...ouver to the oven cavity front face plate After any service make sure of the following 1 Door latch heads smoothly catch latch hook through latch holes and that latch head goes through center of latch hole 2 Deviation of door alignment from horizontal line of cavity face plate is to be less than 1 0mm 3 Door is positioned with its face pressed toward cavity face plate 4 Check for microwave leakage...

Page 51: ...se Removal 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Remove the hood louver from the oven cavity Refer to the procedure of Hood Louver Removal 5 Remove door assembly refer to Door Replacement Replacement of door components are as follows 6 Place door assembly on a soft cloth with latches facing up CHOKE COVER 7 Insert a putty knife thickness of about 0 5mm into the gap...

Page 52: ...Component Teardown and Testing 4 14 Notes ...

Page 53: ...Wiring Diagrams 5 1 Circuit Components ...

Page 54: ...Wiring Diagrams 5 2 Glass Touch Key Unit Diagram ...

Page 55: ...Wiring Diagrams 5 3 Control Unit Circuit ...

Page 56: ...Wiring Diagrams 5 4 Oven Wiring Schematic Off Condition ...

Page 57: ...Parts List 6 1 ...

Page 58: ...Parts List 6 2 ...

Page 59: ...07 27 77 75 108 9 21 112 49 28 39 46 109 113 108 2 1 107 90 113 108 108 116 89 89 6 59 107 111 8 8 107 24 19 108 20 9 105 23 23 1 23 2 105 105 105 76 4 76 4 7 107 80 18 5 107 3 62 78 61 55 55 43 107 45 44 94 41 40 38 51 4 11 57 117 117 107 59 106 88 106 16 108 114 91 29 26 53 93 93 42 107 34 81 58 81 95 60 76 76 1 76 2 76 3 76 4 76 5 76 6 Oven And Cabinet Parts ...

Page 60: ...Parts List 6 4 89 88 31 68 56 69 65 101 102 102 70 101 107 73 67 74 64 100 72 71 30 35 Door Assembly and Control Unit ...

Page 61: ...MOUNTING ANGLE OPERATION MANUAL WALL TEMPLATE INSTALLATION INSTRUCTION TOP TEMPLATE TURNTABLE TRAY TRAY PAD TOP PAD BOTTOM PAD PACKING CASE ACCESSORY HOLDER WRAP COVER Non replaceable items DOOR PROTECTOR PACKING SUPPORT RACK PAD PROTECTION SHEET RACK DAMPER ASSEMBLY DOOR PAD CABINET COVER Packing And Accessories ...

Page 62: ...Parts List 6 6 Notes ...

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