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CFMV56DCE
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. (High Voltage
Capacitor, High Voltage Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness
etc..)
BEFORE SERVICING ....................................................................................................... INSIDE FRONT COVER
WARNING TO SERVICE PERSONNEL................................................................................................................. 3
MICROWAVE MEASUREMENT PROCEDURE..................................................................................................... 4
FOREWORD AND WARNING ............................................................................................................................... 7
PRODUCT SPECIFICATIONS ............................................................................................................................... 8
GENERAL INFORMATION.................................................................................................................................... 8
OPERATION......................................................................................................................................................... 
TROUBLESHOOTING GUIDE ............................................................................................................................. 5
TEST PROCEDURE ............................................................................................................................................ 7
TOUCH CONTROL PANEL ASSEMBLY .............................................................................................................. 27
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE................................................................. 3
PICTORIAL DIAGRAM ......................................................................................................................................... 39
POWER UNIT CIRCUIT ....................................................................................................................................... 40
LSI UNIT CIRCUIT ............................................................................................................................................... 4
PRINTED WIRING BOARD.................................................................................................................................. 42
PARTS LIST ........................................................................................................................................................ 43
PACKING AND ACCESSORIES .......................................................................................................................... 47
This document has been published to be used for after sales service only. The contents are subject to
change without notice.
Publication # 5995505418
ELECTROLUX
SERVICE MANUAL

TABLE OF CONTENTS

ElEctrolux canada corporatIon
6150 McLaughlin Road, Mississauga, Ontario, Canada L5R 4C2
Canada 866•294•9911 (English or French)
OVER THE RANGE
MICROWAVE OVEN
CFMV156DBD
MODELS
CFMV156DSD
CFMV156DCE

C F M V 1 5 6 D B D
C F M V 1 5 6 D S D
C F M V 1 5 6 D C E
S64M242FM156C
Page
P/N 316439259

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Summary of Contents for Electrolux CFMV156DBD

  • Page 1: Table Of Contents

    PACKING AND ACCESSORIES .......................... 47 This document has been published to be used for after sales service only. The contents are subject to change without notice. ElEctrolux canada corporatIon 6150 McLaughlin Road, Mississauga, Ontario, Canada L5R 4C2 Canada 866•294•9911 (English or French)
  • 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 Measurement Procedure outlined in this service manual. If microwave emissions level is in excess of the specified limit, contact ELECTROLUX CANADA CORPORATION immediately. If the unit operates with the door open, service person should ) tell the user not to operate the oven and 2) contact ELECTROLUX CANADA CORPORATION and NHW, CANADA or ELECTROLUX HOME PRODUCTS, INC.
  • Page 3: Warning To Service Personnel

    C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E 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.
  • Page 4: Microwave Measurement Procedure

    CFMV156DBD CFMV156DSD CFMV156DCE MICROWAVE MEASUREMENT PROCEDURE (CANADIAN) 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 5 C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E 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 acquisition by a purchaser, and thereafter (through the useful life of the oven), 5 mW/cm...
  • Page 6 CFMV156DBD CFMV156DSD CFMV156DCE NOTES...
  • Page 7: Foreword And Warning

    GENERAL INFORMATION CFMV156DBD / CFMV156DSD CFMV156DCE FOREWORD OPERATION This Manual has been prepared to provide Electrolux Home Products Service Personnel with Operation and Service Information for the ELEC- TROLUX OVER THE RANGE MICROWAVE OVENS, CFMV56DBD, TROUBLESHOOTING GUIDE AND CFMV56DSD, and CFMV56DCE.
  • Page 8: Product Specifications

    CFMV156DBD CFMV156DSD CFMV156DCE PRODUCT SPECIFICATION ITEM DESCRIPTION Power Requirements 20 Volts / 3.0 Amperes 60 Hertz Single phase, 3 wire grounded Power Output 950 watts (IEC TEST PROCEDURE) Operating frequency of 2450MHz Case Dimensions Width 29-5/6" Height 5- 9/6" Depth 6-/4"...
  • Page 9 C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E Electrical Requirements The oven is equipped with a 3-prong grounding plug. DO NOT UNDER ANY CIRCUMSTANCES CUT OR REMOVE THE GROUNDING PIN FROM THE PLUG.
  • Page 10 CFMV156DBD CFMV156DSD CFMV156DCE CONTROL PANEL NOTE: Some one-touch cooking features such as "Plus  Min" are disabled after three minutes when the oven is not used. These features are automatically enabled when the door is opened and closed or Clear-Off button is pressed.
  • Page 11: Operation

    C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E OPERATION DESCRIPTION OF OPERATING SEQUENCE The following is a description of component functions dur- sensing switch is mechanically associated with the door ing oven operation.
  • Page 12 CFMV156DBD CFMV156DSD CFMV156DCE VENTILATION METHODS HOT AIR EXHAUST . VERTICAL VENTING For this venting method, hot air rising from the conventional range below is drawn in by the hood fan motor through the grease filters at the right and left sides of the base...
  • Page 13 C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E SCHEMATIC NOTE: CONDITION OF OVEN . DOOR CLOSED. CLOCK APPEARS ON DISPLAY. PRIMARY THIRD SWITCH...
  • Page 14 CFMV156DBD DESCRIPTION AND FUNCTION OF COMPONENTS CFMV156DSD CFMV156DCE DOOR OPEN MECHANISM closing of the monitor switch contacts. CAUTION: BEFORE REPLACING A BLOWN C/T FUSE The door is opened by pulling the door handle, refer to the TEST THE DOOR SENSING SWITCH, SEC- Figure D-.
  • Page 15: Troubleshooting Guide

    C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E TROUBLESHOOTING GUIDE Never touch any part in the circuit with your hand or an uninsulated tool while the power supply is con- nected.
  • Page 16 CFMV156DBD CFMV156DSD CFMV156DCE CK = Check / RE = Replace...
  • Page 17: Test Procedure

    C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER MAGNETRON ASSEMBLY TEST . Disconnect the power supply cord, and then remove outer case. 2.
  • Page 18 CFMV156DBD CFMV156DSD CFMV156DCE TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER (HIGH VOLTAGES ARE PRESENT AT THE HIGH VOLTAGE TERMINAL, SO DO NOT ATTEMPT TO MEASURE THE FILAMENT AND HIGH VOLTAGE.) HIGH VOLTAGE RECTIFIER TEST . Disconnect the power supply cord, and then remove outer case.
  • Page 19 C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER CAUTION: IF THE TEMPERATURE FUSE INDICATES AN OPEN CIRCUIT AT ROOM TEMPERATURE, REPLACE TEMPERATURE FUSE.
  • Page 20 CFMV156DBD CFMV156DSD CFMV156DCE TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER SECONDARY INTERLOCK RELAY (RY2) . Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Disconnect two (2) wire leads from the male tab terminals of the Secondary Interlock Relay. Check the state of the relay contacts using a ohmmeter.
  • Page 21 C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER HOOD THERMAL CUT-OUT TEST .
  • Page 22 CFMV156DBD CFMV156DSD CFMV156DCE TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER TOUCH CONTROL PANEL ASSEMBLY TEST The touch control panel consists of circuits including semiconductors such as LSI, ICs, etc. Therefore, unlike conventional microwave ovens, proper maintenance cannot be performed with only a voltmeter and ohmmeter.
  • Page 23 C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER When testing is completed, ) Disconnect the power supply cord.
  • Page 24 CFMV156DBD CFMV156DSD CFMV156DCE TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 7. After that procedure, re-connect the power supply cord. 8. Check voltage between normal open terminal of the relay RY2 and the normal open terminal of the relay RY on the control unit with an A.C. voltmeter.
  • Page 25 C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER STEPS OCCURRENCE CAUSE OR CORRECTION Only pattern at "a"...
  • Page 26 CFMV156DBD CFMV156DSD CFMV156DCE TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER NOISE FILTER TEST . Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Disconnect the leads to the primary of the power transformer.
  • Page 27: Touch Control Panel Assembly

    C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL The touch control section consists of the following units Symbol Voltage Application...
  • Page 28 CFMV156DBD CFMV156DSD CFMV156DCE Pin No. Signal Description Back light circuit (Light emitting diodes) driving signal. To input signal which communicates the door open/close information to LSI. Door close "H" level signal (0V). Door open "L" level signal (-5V). 9-0 AN-AN0 Terminal not used.
  • Page 29 C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E Pin No. Signal Description Key strobe signal. Signal applied to touch-key section. A pulse signal is input to P43-P46 terminal while one of G7 line keys on key matrix is touched.
  • Page 30 CFMV156DBD CFMV156DSD CFMV156DCE SERVICING 1. Precautions for Handling Electronic Components transformer. This unit uses CMOS LSI in the integral part of the circuits. 4) Re-install the outer case (cabinet). When handling these parts, the following precautions 5) Re-connect the power supply cord after the outer should be strictly followed.
  • Page 31: Component Replacement And Adjustment Procedure

    C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE WARNING AGAINST HIGH VOLTAGE: Microwave ovens contain circuitry capable of producing very high voltage and current, contact with following parts may result in severe, possibly fatal, electric shock.
  • Page 32 CFMV156DBD CFMV156DSD CFMV156DCE 5. Pull the hood exhaust louver from the oven cavity by Push pushing the right and left tabs of the hood exhaust louver to remove. Hood exhaust louver 6. Now, the hood exhaust louver is free. Tab (left )
  • Page 33 C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E the oven cavity top plate and release the snap band from 6.
  • Page 34 CFMV156DBD CFMV156DSD CFMV156DCE COOLING FAN MOTOR REMOVAL . Disconnect the power supply cord, remove the oven 5. Remove the fan blade from the shaft of the fan motor by from wall and remove outer case (Refer to procedure pulling and rotating the fan blade with your hand.
  • Page 35 C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E TURNTABLE MOTOR AND FOOD LAMP SOCKETS REMOVAL . Disconnect the power supply cord. TURNTABLE MOTOR 2.
  • Page 36 CFMV156DBD CFMV156DSD CFMV156DCE fixing plate. adhesive on the key fixing plate surfaces completely 4. Release the two (2) tabs holding the power unit to the with a soft cloth soaked in alcohol. key fixing plate. 3. When attaching the key unit to the key fixing plate, adjust 5.
  • Page 37 C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E 4. The contact of door sensing switch and secondary interlock switch open within .2mm gap between right side of cavity face plate and door when door is open.
  • Page 38 CFMV156DBD CFMV156DSD CFMV156DCE Note: The door on a microwave oven is designed to Hood Exhaust Louver act as an electronic seal preventing the leakage Upper Door Hige Pin of microwave energy from oven cavity during cook cycle. This function does not require that...
  • Page 39: Pictorial Diagram

    C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E NOISE FILTER BOARD...
  • Page 40: Power Unit Circuit

    CFMV156DBD CFMV156DSD CFMV156DCE Figure S-2. Power Unit Circuit...
  • Page 41 C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E...
  • Page 42: Printed Wiring Board

    CFMV156DBD CFMV156DSD CFMV156DCE Figure S-4. Printed Wiring Board...
  • Page 43: Parts List

    Front panel L [CFMV156DCE] GCABUB103MRP0 Outer case cabinet [CFMV156DBD/CFMV156DCE] GCABUB105MRP0 Outer case cabinet [CFMV156DSD] TMAPCB083MRR0 Schematic diagram FANGKB009MRY0 Hood lamp glass assembly [CFMV156DBD/CFMV156DCE] FANGKB029MRY0 Hood lamp glass assembly [CFMV156DSD] PCOVPB096MRT0 Base cover [CFMV156DBD/CFMV156DCE] PCOVPB097MRT0 Base cover [CFMV156DSD] CONTROL PANEL PARTS...
  • Page 44 Q'TY CODE DOOR PARTS CDORFB410MRK0 Door assembly [CFMV156DBD] CDORFB413MRK0 Door assembly [CFMV156DSD] CDORFB411MRK0 Door assembly [CFMV156DCE] FDORFB086MRT0 Door panel assembly [CFMV156DBD/CFMV156DCE] FDORFB089MRT0 Door panel assembly [CFMV156DSD] FCOV-B309MRK0 Door frame assembly [CFMV156DBD] FCOV-B312MRK0 Door frame assembly [CFMV156DCE] FCOV-B310MRK0 Door frame assembly [CFMV156DSD]...
  • Page 45 C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E OVEN AND CABINET PARTS...
  • Page 46 CFMV156DBD CFMV156DSD CFMV156DCE CONTROL PANEL PARTS DOOR PARTS MISCELLANEOUS...
  • Page 47: Packing And Accessories

    C F M V 1 5 6 D B D C F M V 1 5 6 D S D C F M V 1 5 6 D C E PACKING AND ACCESSORIES 33 TURNTABLE TRAY INSTALLATION INSTRUCTIONS TOP PAD GREASE FILTER (x 2) 73 TOP/WALL TEMPLATE DOOR PROTECTOR...
  • Page 48 CFMV156DBD CFMV156DSD CFMV156DCE COPYRIGHT © 2007 BY ELECTROLUX CANADA CORPORATION 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...

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