Electrolux E30MO65GSSA Service Manual

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In the interest of user-safety the oven should be restored to its original condition and only parts identical to those specified should
be used.
WARNING TO SERVICE PERSONNEL: 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 and Heat sink etc., and Magnetron, High
Voltage Harness etc..)
BEFORE SERVICING ....................................................................................................... INSIDE FRONT COVER
WARNING TO SERVICE PERSONNEL................................................................................................................. 4
MICROWAVE MEASUREMENT PROCEDURE..................................................................................................... 5
FOREWORD AND WARNING ............................................................................................................................... 7
PRODUCT SPECIFICATIONS ............................................................................................................................... 8
GENERAL INFORMATION.................................................................................................................................... 8
OPERATION......................................................................................................................................................... 0
TROUBLESHOOTING GUIDE ............................................................................................................................. 6
TEST PROCEDURE ............................................................................................................................................ 8
TOUCH CONTROL PANEL ASSEMBLY .............................................................................................................. 25
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE................................................................. 3
PICTORIAL DIAGRAM ......................................................................................................................................... 38
LSI UNIT CIRCUIT ............................................................................................................................................... 39
PRINTED WIRING BOARD.................................................................................................................................. 40
PARTS LIST ........................................................................................................................................................ 4
PACKING AND ACCESSORIES .......................................................................................................................... 46
This document has been published to be used for aftersales service only. The contents are subject to change without notice.
Publication # 5995505368
ELECTROLUX
SERVICE MANUAL

TABLE OF CONTENTS

P. O. Box 212378, Augusta, GA, 30917
800•944•9044
MICROWAVE OVEN
MODEL
E30MO65GSSA

E30MO65GSSA
S37M276E30S06
Page
P/N 316439254

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  Summary of Contents for Electrolux E30MO65GSSA

  • Page 1: Table Of Contents

    PARTS LIST ................................ 4 PACKING AND ACCESSORIES .......................... 46 This document has been published to be used for aftersales service only. The contents are subject to change without notice. ElEctrolux HoME ProDuctS, INc. P. O. Box 212378, Augusta, GA, 30917 800•944•9044...
  • Page 2: 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 Measure- ment 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 ) tell the user not to operate the oven and 2) contact ELECTROLUX HOME PRODUCTS, INC.
  • Page 3 E30MO65GSSA Notes...
  • Page 4: Warning To Service Personnel

    E30MO65GSSA WARNING TO SERVICE PERSONNEL Microwave ovens contain circuitry capable of pro- ducing very high voltage and current, contact with following parts may result in a severe, possibly fatal, electrical shock. (Example) High Voltage Capacitor, High Voltage Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness etc..
  • Page 5: Microwave Measurement Procedure

    E30MO65GSSA 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 undermentioned.
  • Page 6 E30MO65GSSA MICROWAVE MEASUREMENT PROCEDURE (USA) A. Requirements: ) Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven should not exceed mW/cm at any point 5cm or more from the external surface of the oven, measured prior to...
  • Page 7: Foreword And Warning

    GENERAL INFORMATION FOREWORD OPERATION This Manual has been prepared to provide Electrolux Home Products Service Personnel with Operation and Service Information for the ELEC- TROLUX MICROWAVE OVEN, E30MO65GSSA. It is recommended that service personnel carefully study the entire text of...
  • Page 8: Product Specifications

    E30MO65GSSA SPECIFICATION ITEM DESCRIPTION Power Requirements 20 Volts (USA) / 7 Volts (Canadian) 3.0 Amperes (Microwave) / 3.0 Amperes (Convection) 60 Hertz / Single phase, 3 wire grounded Power Output 900 watts (IEC 705 Test Procedure) Operating frequency of 2450MHz...
  • Page 9: Oven Diagram

    E30MO65GSSA Electrical Requirements The electrical requirements are a 5 -20 volt 60 Hz, AC only, Grounded 3-Pronged Plug Receptacle Box 5 or more amp. fused electrical supply. It is recommended that a sepa- rate circuit serving only this appliance be provided. When installing this appliance, observe all applicable codes and ordinances.
  • Page 10: Operation

    E30MO65GSSA OPERATION DESCRIPTION OF OPERATING SEQUENCE The following is a description of component functions dur- door switch, monitor switch, door sensing switch, the secondary interlock relay and the primary interlock switch ing oven operation. are activated with the following results. The circuits to...
  • Page 11 E30MO65GSSA CONVECTION COOKING CONDITION first. And then program desired cooking time by touching the Number pads. The LOW MIX/BAKE pad is prepro- PREHEATING CONDITION ο grammed for 350 F with 0% microwave power, while the Program desired convection temperature by touching the ο...
  • Page 12 E30MO65GSSA gradually. When the resistance reaches the value set ac- 5. When the oven temperature has reached the programmed cording to the menu, supplementary cooking is started. convection temperature, the oven goes into the The time of supplementary cooking is determined by experi- programmed cooking mode.
  • Page 13: Schematic Diagram

    E30MO65GSSA During sensor cooking operation, the fire sensing op- This is because the operation of the convection fan eration sequence will not begin until the AH sensor has would interfere with the AH sensor's vapor detection. detected vapors and initiated a sensor cooking cycle.
  • Page 14 E30MO65GSSA SCHEMATIC NOTE: CONDITION OF OVEN . DOOR CLOSED. 2. MIX COOKING PAD TOUCHED. 3. COOKING TIME PROGRAMMED. 4. “START” PAD TOUCHED. 5. RY2 AND RY3 WILL ALTERNATELY CLOSE. DURING COOK CYCLE. CONV. MAGNETRON OVEN THERMAL THERMAL THERMAL NOISE FILTER...
  • Page 15: Description And Function Of Components

    E30MO65GSSA DESCRIPTION AND FUNCTION OF COMPONENTS DOOR SENSING AND PRIMARY INTERLOCK THIRD DOOR SWITCH SWITCHES The switch is activated by the latch heads, while the door is closed. When the door is opened, the switch interrupt The door sensing switch in the secondary interlock system the circuit to the power transformer.
  • Page 16: Troubleshooting Guide

    E30MO65GSSA oven cavity by means of the convection fan which is driven -3. When the damper is moved to the open position by by the convection motor. It then enters the inside of the the damper cam the damper switch is closed (ON oven through the vent holes provided on the left side of the position).
  • Page 17 E30MO65GSSA (SENSOR CONDITION OFF CONDITION COOKING CONDITION (MICROWAVE) (CONVECTION) COOKING) PROBLEM POSSIBLE CAUSE DEFECTIVE PARTS MAGNETRON POWER TRANSFORMER H.V. RECTIFIER ASSEMBLY HIGH VOLTAGE CAPACITOR PRIMARY INTERLOCK SWITCH SECONDARY INTERLOCK SYSTEM MONITOR SWITCH MONITOR FUSE THIRD DOOR SWITCH THERMAL CUT-OUT CONVECTION HEATER...
  • Page 18: Test Procedure

    E30MO65GSSA 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. To test for an open filament, isolate the magnetron from the high voltage circuit. A continuity check across the magnetron filament leads should indicate less than  ohm.
  • Page 19 E30MO65GSSA TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER If the capacitor is open, no high voltage will be available to the magnetron. Disconnect input leads and check for short or open between the terminals using an ohmmeter. Checking with a high ohm scale, if the high voltage capacitor is normal, the meter will indicate conti- nuity for a short time and should indicate approximately 0 MΩ...
  • Page 20 E30MO65GSSA TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER MAGNETRON THERMAL CUT-OUT (on the waveguide) A continuity check across the thermal cut-out terminals should indicate a closed circuit unless the ο ο temperature of the thermal cut-out reaches approximately 257 F (25 An open thermal cut-out indicates overheating of the magnetron.
  • Page 21 E30MO65GSSA TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER temperature tester must be used. A low priced bi-metal type thermometer is not reliable or accurate. The temperature should be checked with outer case cabinet installed, approx. 5 minutes after preheat temperature is reached (audible signal sounds four times). The temperature experienced may be ap- ο...
  • Page 22 E30MO65GSSA TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER KEY UNIT TEST If the display fails to clear when the STOP/CLEAR pad is depressed, fi rst verify the fl at ribbon cable is making good contact, verify that the door sensing switch (stop switch) operates properly; that is the contacts are closed when the door is closed and open when the door is open.
  • Page 23 E30MO65GSSA TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER PROCEDURES TO BE TAKEN WHEN THE FOIL PATTERN ON THE PRINTED WIRING BOARD (PWB) IS OPEN. To protect the electronic circuits, this model is provided with a fine foil pattern added to the primary on the PWB, this foil pattern acts as a fuse.
  • Page 24 E30MO65GSSA TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER When the AH sensor is defective (open or short), Error will appear in the display after 6 seconds cleaning time. If ERROR appears check sensor wire connections and/or AH sensor. NOTE: ERROR will appear if the door is opened or STOP/CLEAR pad is touched during first stage of sensor cooking.
  • Page 25: Touch Control Panel Assembly

    E30MO65GSSA TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL The touch control section consists of the following units 5) Buzzer Circuit as shown in the touch control panel circuit. The buzzer is responds to signals from the LSI to emit...
  • Page 26 E30MO65GSSA Pin No. Signal Description Used for initial balancing of the bridge circuit (absolute humidity sensor). This input is an analog input terminal from the AH sensor circuit, and connected to the A/D converter built into the LSI. AH sensor input.
  • Page 27 E30MO65GSSA Pin No. Signal Description Damper motor relay driving signal. H : GND To turn on and off shut-off relay(RY4). Heating element driving signal. To turn on and off shut-off relay(RY3). "L" level dur- ing convection cooking; "H" level otherwise. During...
  • Page 28 E30MO65GSSA Pin No. Signal Description Segment data signals. The relation between signals and indicators are as follows: Signal Segment Signal Segment Signal Segment Signal Segment P23 ....P P7 ..... P5 P3 ....P9 P07 ....P3 P22 ....P2 P6 ..... P6 P2 ....
  • Page 29 E30MO65GSSA ABSOLUTE HUMIDITY SENSOR CIRCUIT (1) Structure of Absolute Humidity Sensor the LSI observes the initial voltage available at its AN6 The absolute humidity sensor includes two thermistors terminal. as shown in the illustration. One thermistor is housed in With this voltage given, the switches SW to SW5 in...
  • Page 30 E30MO65GSSA SERVICING 1. Precautions for Handling Electronic Components while keeping it connected to the oven. This unit uses CMOS LSI in the integral part of the circuits. B. On some models, the power supply cord between the When handling these parts, the following precautions touch control panel and the oven proper is long enough should be strictly followed.
  • Page 31: Component Replacement And Adjustment Procedure

    E30MO65GSSA COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE CAUTION: DISCONNECT OVEN FROM POWER SUPPLY BEFORE REMOVING OUTER CASE. DISCHARGE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING AFTER REMOVING OUTER CASE. OUTER CASE REMOVAL WARNING FOR WIRING To prevent an electric shock, take the following man-...
  • Page 32 E30MO65GSSA HIGH VOLTAGE RECTIFIER ASSEMBLY REMOVAL . Disconnect oven from power supply and remove outer magnetron. case. CAUTION: WHEN REPLACING THE SILICON RECTI- 2. Discharge the high voltage capacitor. FIER ASSEMBLY, THE GROUND SIDE TER- 3. Remove one () screw holding the rectifier assembly to MINAL MUST BE SECURED FIRMLY WITH A the capacitor holder.
  • Page 33 E30MO65GSSA HEATER UNIT ASSEMBLY REMOVAL (HEATING ELEMENT/CONVECTION FAN/CONVECTION MOTOR/THERMISTOR) THERMISTOR REMOVAL HEATING ELEMENT REMOVAL . Disconnect oven from power supply and remove outer . Remove two (2) screws holding heating element to heater case cabinet. duct. 2. Discharge the high voltage capacitor.
  • Page 34 E30MO65GSSA 6. Remove the two (2) screws and nuts holding the fan because the bracket may be disfigured. motor to the fan duct. * Make sure that the fan blade rotates smooth after 7. Now, the fan motor is free.
  • Page 35: Door Replacement And Adjustment

    E30MO65GSSA 2. When a attaching the key unit to the control panel 6. Now, the control unit and frame assembly are frame, adjust the lower edge and right edge of separated. the key unit to the correct position of the control NOTE;...
  • Page 36: Door Disassembly

    E30MO65GSSA 7. Make sure the door is parallel with oven face lines (left cycle. This function does not require that door be and upper side lines) and door latch heads pass through airtight, moisture (condensation)-tight or light-tight. latch holes correctly.
  • Page 37 E30MO65GSSA MICROWAVE MEASUREMENT PROCEDURE Leakage test: After adjustment of the door, interlock and monitor switches Leakage Test with Enclosure Installed. are completed individual or collectively, interlock switch test . Grasp the probe of the survey instrument and hold it and microwave leakage test must be performed with survey...
  • Page 38: Pictorial Diagram

    E30MO65GSSA...
  • Page 39: Lsi Unit Circuit

    E30MO65GSSA...
  • Page 40: Printed Wiring Board

    E30MO65GSSA (C81) R86(J8) (C80) (R45) (C45) (CN - D) (R47) (R48) (R49) (C46) (C47) (J7) (J5) (J3) (J2) (J4) (J6) CONV HEATER COM Figure S-3. Printed Wiring Board...
  • Page 41: Parts List

    E30MO65GSSA PARTS LIST Refer to "IMPORTANT" described at end of parts list. REF. NO. PART NO. DESCRIPTION Q'TY ELECTRICAL PARTS FACCDA074WRE0 Power supply cord FFS-BA012WRK0 Monitor fuse 20A and monitor switch (V-5220D-070) assembly FPWBFA389WRKZ Noise filter QSW-MA131WRE0 Primary interlock switch/Thirdoor switch/Door sensing switch...
  • Page 42: Door Parts

    E30MO65GSSA REF. NO. PART NO. DESCRIPTION Q'TY CODE NCPL-A021WRF0 Turntable coupling PCOVPA301WRE0 Waveguide cover PCUSUA196WRP0 Cushion PGLSPA455WRE0 Light glass PFPF-A139WRE0 Thermal protection sheet (Right) PREFHA053WRW0 Thermal protection plate (Right) PSKR-A153WRW0 Air guide (Bottom) PSKR-A323WRW0 Air guide (Right) LANGQA407WRW0 Convection motor mounting plate...
  • Page 43 E30MO65GSSA REF. NO. PART NO. DESCRIPTION Q'TY CODE XFPSD40P08000 Screw; 4mm x XFPSD60P14JS0 Screw; 6mm x 14mm XOTSD40P12000 Screw; 4mm x 12mm XFPSD30P08000 Screw; 3mm x XNESD40-32000 Nut; 4mm x 3.2mm XNEUW40-32000 Nut; 4mm x 3.2mm XWSUW40-10000 Washer; 4mm x 1 mm LX-CZA070WRE0 Screw;...
  • Page 44 E30MO65GSSA OVEN AND CABINET PARTS...
  • Page 45 E30MO65GSSA CONTROL PANEL PARTS DOOR PARTS MISCELLANEOUS Actual wire harness may be different than illustration.
  • Page 46: Packing And Accessories

    E30MO65GSSA PACKING AND ACCESSORIES TRAY HOLDER TOP PAD ASSEMBLY DOOR PROTECTION SHEET 45 TURNTABLE TRAY PLASTIC BAG 105 OPERATION MANUAL MICROWAVE OVEN 44 TURNTABLE SUPPORT BOTTOM PAD ASSEMBLY TRAY PACKING FOAM PACKING CASE Not replaceable items.
  • Page 47 E30MO65GSSA NOTES:...
  • Page 48: Electrolux Home Products, Inc

    E30MO65GSSA ELECTROLUX COPYRIGHT © 2007 BY ELECTROLUX HOME PRODUCTS, INC. ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in retrieval systems, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission...