Electrolux LEVM30FE Service Manual Download Page 34 | Manualshive

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Electrolux LEVM30FE Service Manual Download Page 34

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8. P.C.B Diagrams

8-1 P.C.B Diagrams

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Summary of Contents for LEVM30FE

Page 1: ... 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 P N 316439250 Publication 5995496147 July 2007 ...

Page 2: ... 1 High Voltage Transformer 14 5 2 Low Voltage Transformer 14 5 3 Magnetron 14 5 4 High Voltage Capacitor 15 5 5 High Voltage Diode 15 5 6 Main Relay and Power Control Relay 15 5 7 Adjustment of Primary Switch Door Sensing Switch and Monitor Switch 15 5 8 VENT EXHAUST BLOWER MOTOR 16 5 9 THERMAL CUTOUT TCO S 17 5 9 1 Oven Thermal Cutout Flame sensor 17 5 9 2 Replacement of Flame Sensor 17 5 9 3 Ho...

Page 3: ...ction within the microwave generating compartments check the magnetron wave guide or transmission line and cavity for proper alignment integrity and connections d Any defective or misadjusted components in the interlock monitor door seal and microwave generation and transmission systems shall be repaired replaced or adjusted by procedures described in this manual before the oven is released to the...

Page 4: ...brought into compliance 10 Service technicians should remove their watches while repairing an MWO 11 To avoid any possible radiation hazard replace parts in accordance with the wiring diagram Also use only the exact replacements for the following parts Primary and secondary interlock switches interlock monitor switch 12 If the fuse is blown by the Interlock Monitor Switch Replace all of the follow...

Page 5: ...r wiring always unplug the oven and discharge the high voltage capacitor See Figure 1 1 2 The high voltage capacitor remains charged about 30 seconds after disconnection Short the nega tive terminal of the high voltage capacitor to the oven chassis Use a screwdriver 3 High voltage is maintained within speciﬁed limits by close tolerance safety related components and adjustments If the high voltage ...

Page 6: ...UT POWER OPERATING FREQUENCY MAGNETRON COOLING METHOD OUTSIDE DIMENSIONS NET WEIGHT 99 MINUTES 99 SECONDS 120V 60Hz AC MICROWAVE 1 600W 950 Watts IEC 705 TEST 2 450MHz OM75P 10 COOLING FAN MOTOR 297 8 W x 1615 16 H x 157 16 D 74 74 lbs 2 1 Table of Speciﬁcations ...

Page 7: ... 4 3 Operating Instructions 3 1 Control Panel ...

Page 8: ... 5 389 7 mm 758 mm 419 mm 404 8 mm 3 2 Features External Views ...

Page 9: ...u have all the sparts shown here If any part is missing or broken call your dealer Registration Card Use and Care Guide Installation Instructions Top Template Wall Template Glass Tray Roller Guide Ring Charcoal ﬁlter Hardware kit Grease Filters Shelf Exhaust Adaptor Drip pan ...

Page 10: ... or a total weight of 114 pounds This product cannot be installed to cabinet arrangements such as an island or peninsula It must be mounted to both a top cabinet and wall 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 exhaust or vertical See installation instrustions on how to change and or blower section ...

Page 11: ... fan will automatically turn off when the internal parts are cool If may stay on for 30 minutes or more after the cooktop and microwave controls are turned off 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 1 Disconnect oven power 2 Remove screws 2 from grille outer case 3 Lift off ...

Page 12: ...BLOWER AND HIGH VOLTAGE TRANSFORMER Oven must be removed from wall REMOVING OVEN FROM WALL 2 PEOPLE REQUIRED Oven is hooked on metal tabs at bottom of wall mounting plate and to cabinet by 3 top cabinet bolts 4 1 Replacement of High Voltage Transformer and Fan Motor Assembly Disconnect oven power Remove Grille Control Box Assembly 1 Discharge the high voltage capacitor 2 Disconnect all the leads 3...

Page 13: ... E Following the procedure as shown in the ﬁgure insert and bend a thin metal plate between Door E and Door A until you hear the tick sound Insertion depth of the thin metal plate should be 0 5mm or less 4 3 3 Removal of Key Door Spring Remove pin hinge from Door E Detach spring from Door E and key door Door A Door C Door E Key Door Spring Door E ...

Page 14: ...he direction necessary for proper alignment 2 Adjust so that the door has no play between the inner door surface and oven front surface If the door assem bly is not mounted properly microwave energy may leak from the space between the door and oven 3 Do the microwave leakage test After replacement of the defective component parts of the door reassemble it and follow the instruc tions below for pro...

Page 15: ...e 4 Remove stirrer motor screws 1 and lift up stirrer motor after turn left The stirrer is located on the upper side of the cavity The oven uses a top feed wave guide 1 Disconnect power and open the door 2 Remove the scerws 3 and turn the stirrer cover left 3 Remove stirrer cover and the stirrer will come with it SCREWS COVER STIRRER STIRRER ASSEMBLY COVER STIRRER STIRRER MOTOR 4 7 Removal of stir...

Page 16: ...isconnect the connectors from the control circuit board 4 8 2 Removal of P C B Assembly 1 Pull the lever end of the plastic fastener and remove the Flexible Printed Circuit FPC of membrane panel 2 Remove screws securing the control circuit board 3 Lift up the control circuit board from the Ass y control box 4 When reconnecting the FPC connector make sure that the holes on the connector are properl...

Page 17: ... indicate only an open ﬁlament or a shorted magnetron To diagnose an open ﬁlament or shorted magnetron 2 Isolate the magnetron from the circuit by disconnecting its leads 3 A continuity check across the magnetron ﬁlament terminals should indicate one ohm or less 4 A continuity check between each ﬁlament terminal and magnetron case should read open 1 The low voltage transformer is located on the co...

Page 18: ...ing the Latch Body to the oven assem bly adjust the Latch Body by moving it so that the oven door will not have any play in it Check for play in the door by pulling the door assembly Make sure that the latch keys move smoothly after adjustment is completed Completely tighten the screws holding the Latch Body to the oven assembly 4 Reconnect to Monitor switch and check the continu ity of the monito...

Page 19: ...ould be much slower TO TEST THE CAPACITOR 1 Remove grille discharge capacitor and disconnect one capacitor lead 2 Make appropriate capacitor check with analog meter needle should rise then fall cap is charging then discharging TO TEST BLOWER WINDINGS 1 Disconnect power and remove grille 2 Open control panel and discharge capacitor 3 Disconnent two wires to run capacitor Continuity test across the ...

Page 20: ... magnetron The oven thermal cutout Cavity TCO is located on the top side of the oven cavity beside exhaust duct with a temperature rating of 320 F 160 C 140 F 60 C The cutout is tightly held to the top of the oven cavity by duct upper 5 9 2 Replacement of Flame Sensor Disconnect oven power Remove Grille Panel outer 1 Remove screws securing the duct upper 2 Loft up the exhaust duct from the cavity ...

Page 21: ...e only time it functions is during an overheat condition It will be normally open when checked with an ohmmeter HOOD THERMAL CUTOUT BOTTOM THERMAL CUTOUT 5 9 4 Bottom Thermal Cutout THIS COMPONENT REQUIRE REMOVAL OF MICROWAVE OVEN FROM INSTALLATION FOR SERVICING During a fire on the stove the heat could be intense enough to close the Hood Thermal Cutout and force the fan to run While at moderate h...

Page 22: ...er Sensor failed to open sensor unplugged wiring or smart board Less then 6 shorted sensor or smart board NOTE Only heater terminals H Black and Red leads can be checked with ohmmeter 30Ω CAUTION DO NOT ATTEMPT TO CHECK SENSOR TERMINALS White and Orange leads CAN DAMAGE SENSOR Auto Defrost Reheat GAS SENSOR The magnetron thermal cutout is located above the leads to the magnetrons It is designed to...

Page 23: ...hermal 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 ASSY CASING poor SE KEY SHORT ERROR E 11 OPEN ERROR of gas sensor E 12 SH...

Page 24: ... thermometer and measure the temperature T2 5 Subtract T1 from T2 This will give you the water temperature rise T 6 The output power is obtained by the following formula Output Power 4 187 x 1000 x T 0 55xMcx T2 T0 47 Heating Time sec 3 seconds included as a holding time of magnetron oscillation 4 187 Coefﬁcient for Water 1000 Water cc T Temperature Rise T2 T1 To Room Temperature Mc Cylindrical bo...

Page 25: ...ate of 1 inch sec If the leakage testing of the cabinet door seam is taken near a corner of the door keep the probe perpendicular to the areas making sure that the probe end at the base of the cone does not get closer than 5cm to any metal If it gets closer than 5cm erroneous readings may result 5 Measured leakage must be less than 4mW cm2 after repair or adjustment Maximum allowable leakage is 5m...

Page 26: ...r starts countdown but no microwave oscillation No heat while oven lamp and fan motor turn on 1 Off alignment of latch switches 2 Open or loose connection of high volt age circuit especially magnetron ﬁla ment circuit NOTE Large contact resistance will bring lower magnetron ﬁlament voltage and cause magnetron to lower output and or intermittent oscillation 3 Defective high voltage components H V T...

Page 27: ...1 Loose fan and fan motor 2 Loose screws on H V Transformer 3 Shorted H V Diode Tighten screws of fan motor Tighten screws of H V Transformer Replace H V Diode Turntable motor does not rotate 1 Open or loose wiring of turntable motor 2 Defective turntable motor Replace turntable motor Oven stops operation dur ing cooking 1 Open or loose wiring of primary inter lock switch 2 Operation of thermal cu...

Page 28: ...6 8 6 0 7 1 7 2 7 6 6 5 6 6 6 8 8 9 8 0 9 5 2 1 4 2 1 6 8 5 8 7 8 6 2 1 7 2 1 8 2 1 9 2 1 0 3 1 4 6 1 6 3 7 4 7 6 7 5 7 4 7 7 7 5 0 1 6 0 1 4 0 1 7 0 1 3 0 1 1 9 4 9 6 9 2 0 1 9 9 2 9 6 5 5 1 1 8 0 1 0 1 1 9 0 1 1 1 1 4 1 1 2 1 1 3 1 1 7 1 1 4 2 1 2 2 1 3 2 1 0 2 1 1 2 1 8 1 1 9 1 1 6 1 1 6 5 5 9 8 9 7 9 1 0 1 0 0 1 3 9 0 6 7 5 9 5 5 5 8 5 1 3 1 2 5 1 8 7 158 157 155 154 160 159 153 84 156 82 80 8...

Page 29: ... 26 7 1 Exploded Views continued 138 139 137 132 134 133 135 136 140 141 143 145 144 146 148 149 147 150 8 3 0 5 9 4 8 4 6 4 7 4 5 4 4 4 3 4 2 4 1 5 1 4 0 4 9 3 9 3 8 3 7 3 6 3 ...

Page 30: ......

Page 31: ...Parts Description ...

Page 32: ...Parts Description ...

Page 33: ...Parts Description ...

Page 34: ... 31 8 P C B Diagrams 8 1 P C B Diagrams ...

Page 35: ... 4 0504 001008 TR DIGITAL RN2427 PNP 200MW 2 2K 10K SOT 3 SNA TR16 1 4 0504 001080 TR DIGITAL KRC 246S 13 SNA TR15 1 4 1201 001125 IC OP AMP 75S01 SOP 5P 63MIL SINGLE 100D 1 SNA IC11 1 4 1203 001037 IC VOLTAGE REGULATOR 78L05 SOT 89 3P 185 1 SNA IC03 1 4 1203 002835 IC POSI FIXED REG KIA7805AF DPAK 3P 6 6 1 SNA IC02 1 4 1203 002836 IC POSI FIXED REG KIA7824AF DPAK 3P 6 6 1 SNA IC04 1 4 1203 002876...

Page 36: ...P 10x20 5 2 SNA C08 1 4 2401 001573 C AL 47uF 20 50V GP TP 6 3x11 2 5 2 SNA C20 1 4 2401 002075 C AL 4 7uF 20 50V GP TP 5x11 5 1 SNA C19 1 4 2401 003668 C AL 2200UF 20 16V TP 12 5X20MM 5 1 SNA C03 1 4 2404 000232 C TA CHIP 4 7UF 20 10V TP 3216 1 SNA C15 1 4 2802 001154 RESONATOR CERAMIC 12 5MHZ 0 5 TP 10 0X5 1 SNA XTL1 1 4 DE39 60001A WIRE SO COPPER PI0 5 SN T 52MM TAPING_WI 2 SNA J43 1 4 0604 001...

Page 37: ...AS MOTR2V S2 ASSY PCB PARTS AMV8166 120V60HZ 1 SA 1 3 3501 000256 RELAY POWER 110V 1200VA 10000MA 10MS 1 1 SNA RY82 1 3 3501 001155 RELAY MINIATURE 24VDC 200MW 3000MA 1FORM 3 SA RY86 1 3 3711 001084 HEADER BOARD TO CABLE BOX 8P 1R 2 5MM ST 1 SNA CN81 1 3 3711 004142 CONNECTOR HEADER BOX 3P 5P 1R 5mm 2 5mm 1 SNA CN82 1 3 DE92 01799A ASSY PCB AUTO RAS MOTR2V S2 120V60HZ 1 SNA 1 4 0401 001002 DIODE S...

Page 38: ... 35 9 Schematic Diagrams 9 1 Schematic Diagrams ...

Page 39: ......

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