Electrolux E30MH65GPSA Technical & Service Manual Download Page 32 | Manualshive

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Component Teardown and Testing

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Notes

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Summary of Contents for E30MH65GPSA

Page 1: ...Publication 5995535480 P N 316439276 June 2009 Technical Service Manual Over The Range Microwave Oven Models E30MH65GPSA E30MH65GSSA ...

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: ...rnings and Cautions 3 1 Troubleshooting Guide Chart 3 2 Error Codes 3 4 Section 4 Component Teardown and Testing Warnings and Cautions 4 1 Removing Oven From Wall 4 2 Grille Removal 4 2 Outer Case Removal 4 2 High Voltage Transformer and Fan Motor Assembly Removal 4 3 High Voltage Transformer Testing 4 3 Low Voltage Transformer Testing 4 3 Magnetron Removal 4 4 Magnetron Testing 4 4 Output Power o...

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: ...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 Sensor modes pads Auto cook pads Timer on off pad Set clock pad User Pref pad Quick start pad Number selection pads ...

Page 11: ...ed with a properly grounded three pronged wall receptacle or have a grounding adapter properly grounded and polarized If an extension cord must be used it should be a 3 wire 15 amp or more rated cord Do not drape over a countertop or table where it can be pulled on by children or tripped over accidentally Discharging Capacitor 1 High Voltage Warning Do not attempt to measure any of the high voltag...

Page 12: ...stem Model and Serial Number Plate Glass Turntable Oven Control Panel Drip Pan Touch Control Panel Accessory Components Unpack the microwave oven and check to make sure that you have all the parts listed below If any part is missing or broken a replacement can be ordered 1 Registration Card 2 Use and Care Guide 3 Installation Instructions 4 Top Template 5 Wall Template 6 Glass Tray 7 Roller Guide ...

Page 13: ...nal parts are cool It may stay on for 30 minutes or more after the cooktop and microwave controls are turned off VENT BLOWER The vent or exhaust blower is located at the top of the oven It is shipped for recirculating exhaust but can be changed to rear or vertical exhaust The blower is a two speed HI LO capacitor run blower assembly located on top of the microwave oven The blower is operated by lo...

Page 14: ...this reason the filters must ALWAYS be in place when the hood vent fan is used The grease filter should be cleaned once a month or as needed See Figure 2 4 GRILLE REMOVAL The top full width grille is removable for service to some components such as oven light cavity T C O vent motor capacitor and fuse To remove grille See Figure 2 5 1 Disconnect oven power 2 Remove screws 2 from grille outer case ...

Page 15: ... 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 Reconnect the power supply cord after the outer case is installed 7 Run the...

Page 16: ...s count down but no microwave oscillation No heat while oven lamp and fan motor turn on Oven lamp and fan motor turn on Check fan motor when thermal cutout is defective Check Assembly PCB when low voltage transformer is defective See Section 4 Low Voltage Transformer Testing Check adjustment of primary interlock monitor power relay door sensing switch See Section 4 Main Relay and Power Control Rel...

Page 17: ...gged in Oven does not operate and return to the plugged in mode Loud buzzing noise can be heard Turntable motor does not rotate Oven stops operation during cooking Sparks Uneven cooking Noise from the turntable motor when it starts to operate Adjust door and interlock switches See Section 4 Door Sensing Switch Primary Switch And Monitor Switch Adjustment Consult electrician Check wiring See Sectio...

Page 18: ... 21 Open Error of thermal sensor E 03 If the WARM CONVECTION PREHEAT and BROIL do not reach over 217 of HEX value within 3 minutes it causes E3 error and converts to cancel mode Convection Motor Open Convection Heater Open E 23 If the PREHEAT does not reach the preset temperature within 30 minutes it causes E4 error and converts to cancel mode Assembly Casing Not Installed SE Key Short Error E 11 ...

Page 19: ...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 20: ...top full width grille is removable for service to some components such as oven light oven thermal cut out vent motor capacitor and fuse To remove grille 1 Disconnect oven power 2 Remove screws 2 from grille outer case See Figure 4 2 3 Lift off grille Outer Case Removal To remove the outer case proceed as follows 1 Disconnect the power supply cord 2 Open the oven door and block it open 3 Remove 18 ...

Page 21: ...ve the low voltage transformer from the PCB assembly and check continuity 3 Normal resistor reading is shown in the table 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 1 High voltage is present at th...

Page 22: ...onnection 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 Magnetron Mounting Nuts 1 of 4 shown Magnetron Antenna Gasket Plate Cooling Fins Figure 4 6 Magnetron Removal Figure 4 7 Magnetron Components Output Power of Magnetron The output power of the magnetron can be measured by performing a water t...

Page 23: ...power in watts is computed by multiplying the temperature rise step 5 by a factor of 91 times the of centigrade temperature High Voltage Diode Testing 1 Isolate the diode from the circuit by disconnecting its leads 2 With the ohm meter set at the highest resistance scale measure across the diode terminals Reverse the meter leads and read the resistance A meter with 6V 9V or higher voltage batterie...

Page 24: ...0 2 Make appropriate capacitor check with analog meter needle should rise then fall cap is charging then discharging See Figure 4 10 To test blower windings 1 Disconnect power and remove grille 2 Open control panel and discharge capacitor See Figure 4 10 3 Disconnect two wires to run capacitor Continuity test across the two wires should be approximately 75 ohms of resistance This test allows you t...

Page 25: ...the door reassemble it and follow the instructions below for proper installation and adjustment so as to prevent an excessive microwave leakage 1 When mounting the door to the oven be sure to adjust the door parallel to the bottom line of the oven face plate by moving the upper hinge and lower hinge in the direction necessary for proper alignment 2 Adjust so that the door has no play between the i...

Page 26: ...r duct mounted to the Noise filter 1 Disconnect power and remove grille 2 Replace the fuse See Figure 4 15 3 When the 20A fuse blows out by the operation of the interlock monitor switch replace the primary interlock switch door sensing switch interlock monitor switch and power relay 4 When the above 3 switches operate properly check if any other part such as the control circuit board blower motor ...

Page 27: ...curing cutout on base plate Figure 4 19 Oven Thermal Cutouts Oven Thermal Cut out Hood Thermal Cutout This cutout will protect the touch control from excessive heat by turning the vent fan on at low speed If the surface units of the range are used for long periods of time heat will build up and could damage the microwave control In order to prevent this a thermal cutout is installed on the duct be...

Page 28: ...then 6 shorted sensor or smart board 15 185 Normal verify with detection test 213 or Higher Sensor failed to open sensor unplugged wiring or smart board NOTE Only heater terminals H Black and Red leads can be checked with ohmmeter 30 Do not attempt to check sensor terminals white and orange leads Damage to sensor may occur Figure 4 22 Convection Motor Belt Figure 4 21 Cooking Sensor Figure 4 23 Co...

Page 29: ...se models check and repair all the controls sensor related ones included of the touch control panel while keeping it connected to the oven b On some models the power supply cord between the touch control panel and the oven proper is long enough that they may be separated from each other For those models it is possible to check and repair the controls of the touch control panel while keeping it apa...

Page 30: ...es on the connector are properly engaged with the hooks on the Plastic Fastener Removal of Control Panel Sub 1 Remove Metal bracket from Control Panel Sub See Figure 4 27 and 4 28 2 Replace with a new one Control Box Removal 1 Disconnect power and remove grille 2 Remove a screw securing the control box assembly 3 Be sure to ground any static electric charge in your body and never touch the control...

Page 31: ...sulated screwdriver Door Sensing Switch Primary Switch And Monitor Switch Adjustment 1 When mounting primary switch and interlock monitor switch to latch body consult the figure 2 No specific adjustment during installation of primary switch and monitor switch to the latch body is necessary 3 When mounting latch body to the oven assembly adjust the latch body by moving it so that the oven door will...

Page 32: ...Component Teardown and Testing 4 14 Notes ...

Page 33: ...Wiring Diagrams 5 1 Wiring Diagram ...

Page 34: ...Wiring Diagrams 5 2 Notes ...

Page 35: ...TER CONVECTION 1 38 NUT HEXAGON FLANGE 1 CON FAN 38 NUT HEXAGON FLANGE 1 CON FULLY 39 WASHER DOOR 2 40 FAN CONVECTION 1 41 BRACKET AIR GUIDE 3 42 HOLDER HEATER 1 No Description Q ty Remark 43 BRACKET CASING 1 44 ADIABATIC CASING 1 45 COVER CASING 1 46 SHAFT FAN 1 47 SPACER BEARING 1 48 BEARING 2 49 HOLDER BEARING 1 50 PULLEY FAN CASING 1 51 BRACKET GUIDE 1 52 BRACKET DUCT U 1 53 HOLDER SENSOR 1 54...

Page 36: ...ER AIR 2 125 ASSY HARD WARE 1 126 NUT TOGGLE 3 127 SCREW INCH MACH 1 128 GROMMET 2 No Description Q ty Remark 129 BOLT TOGGLE 3 130 BOLT FLAT 3 131 ASSY CAVITY WELDING 1 132 ASSY HANDLE 1 ASSY DOOR 133 DOOR A 1 134 SCREEN DOOR B 1 ASSY DOOR A 135 ASSY DOOR A 1 ASSY DOOR 136 SPRING ES 1 137 KEY DOOR 1 138 ASSY DOOR E SEALANT 1 139 DOOR C 1 140 ASSY DOOR 1 141 EARTH SPRING 2 142 EARTH SPRING 1 143 S...

Page 37: ...2 56 115 160 111 114 113 112 110 108 109 95 98 101 100 93 97 57 59 55 58 131 158 157 155 154 79 159 153 84 156 156 82 83 83 38 81 47 54 44 35 34 42 41 39 38 39 40 37 36 51 20 22 54 10 14 15 52 12 11 23 21 17 18 19 53 46 50 49 48 43 166 165 150 135 134 162 136 139 161 134 138 141 137 140 143 78 125 86 87 152 126 127 128 129 130 88 89 90 124 145 144 163 164 142 80 146 148 147 149 132 133 Oven And Ca...

Page 38: ...Parts List 6 4 Notes ...

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