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Electrolux GLMV169GSA Service Manual

Over the range microwave oven.
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ELECTROLUX SERVICE MANUAL
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 Capaci-
tor, 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 ............................................................................................................................... 5
PRODUCT SPECIFICATIONS ............................................................................................................................... 6
GENERAL INFORMATION.................................................................................................................................... 6
OPERATION........................................................................................................................................................... 9
TROUBLESHOOTING GUIDE ............................................................................................................................. 4
TEST PROCEDURE ............................................................................................................................................ 6
TOUCH CONTROL PANEL ASSEMBLY .............................................................................................................. 28
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE................................................................. 34
PICTORIAL DIAGRAM ......................................................................................................................................... 42
POWER UNIT CIRCUIT ....................................................................................................................................... 43
LSI UNIT CIRCUIT ............................................................................................................................................... 44
PRINTED WIRING BOARD.................................................................................................................................. 45
PARTS LIST .........................................................................................................................................................46
PACKING AND ACCESSORIES...........................................................................................................................5
This document has been published to be used for after sales service only. The contents are subject to change without notice.
Publication # 5995506226
GLMV169GBB

TABLE OF CONTENTS

ElEctrolux HoME ProDuctS, INc.
P. O. Box 212378, Augusta, GA, 30917
800•944•9044
OVER THE RANGE
MICROWAVE OVENS
GLMV169GSA
GLMV169GSB
GLMV169GBA
GLMV169GBB
GLMV169GQA
PLMVZ169GCA
GLMV169GQB
PLMVZ169GCB

GLMV169GSB
GLMV169GBB
GLMV169GQB
PLMVZ169GCB
S37M277MV169G
MODELS
GLMV169GSB
GLMV169GBB
BLMV169GQB
PLMVZ169GCB
PLMVZ169GCC
Page
P/N 316439265
48

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   Summary of Contents for Electrolux GLMV169GSA

  • Page 1: Table Of Contents

    PARTS LIST .................................46 PACKING AND ACCESSORIES...........................5 This document has been published to be used for after sales service only. The contents are subject to change without notice. ElEctrolux HoME ProDuctS, INc. P. O. Box 212378, Augusta, GA, 30917 800•944•9044 P/N 316439265...

  • 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 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: Warning To Service Personnel

    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 4: Microwave Measurement Procedure

    MICROWAVE MEASUREMENT PROCEDURE 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 at any point 5cm or more from the external surface of the oven.

  • Page 5: Foreword And Warning

    GLMV169GSB / GLMV169GBB GENERAL INFORMATION GLMV169GQB / PLMVZ169GCC FOREWORD OPERATION This Manual has been prepared to provide Electrolux Home Prod- ucts Service Personnel with Operation and Service Information for the ELECTROLUX OVER THE RANGE MICROWAVE OVENS, GLM- TROUBLESHOOTING GUIDE AND V69GSB, GLMV69GBB, GLMV69GQB, PLMVZ69GCC.

  • Page 6: Product Specifications

    PRODUCT SPECIFICATION ITEM DESCRIPTION Power Requirements 20 Volts / 4.2 Amperes 60 Hertz Single phase, 3 wire grounded Power Output 000 watts (IEC-705 TEST PROCEDURE) Operating frequency of 2450MHz Case Dimensions Width 29-5/6" Height 6-3/8" Depth 4- 5/32" (Not including the door handle) Cooking Cavity Dimensions Width 2"...

  • Page 7: Oven Diagram

    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. The power supply cord and plug must be connected to a separate 20 Volt AC, 60 Hz, 5 Amp. or more dedicated line, using a grounded receptacle.

  • Page 8

    CONTROL PANEL GLMV169GBB / GLMV169GSB GLMV169GQB / PLMVZ169GCC (Colors will vary)

  • Page 9: Operation

    OPERATION DESCRIPTION OF OPERATING SEQUENCE is mechanically associated with the door so that it will The following is a description of component functions dur- function in the following sequence. ing oven operation. () When the door opens from a closed position, the OFF CONDITION secondary interlock relay, door sensing switch, and primary interlock switch open their contacts, and...

  • Page 10

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/PLMVZ169GCC BREAKFAST, LUNCH, DINNER 3. RE-CIRCULATION (INSIDE VENTING) The air handing is the same as VERTICAL VENTING BREAKFAST, LUNCH, DINNER will automatically compute except that the final air discharge is directed horizontally the microwave power and cooking time. Set the desired pro- through the upper front of the oven into the kitchen.

  • Page 11

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C any vapor from the oven cavity and sensor. NOTE: During this first stage, do not open the door or SENSOR COOKING CONDITION touch STOP/CLEAR pad. 4. When the sensor detects the vapor emitted from the Using the SENSOR function, food is cooked without figur- food, the display switches over to the remaining ing time, power level or quantity.

  • Page 12

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/PLMVZ169GCC SCHEMATIC NOTE: CONDITION OF OVEN . DOOR CLOSED CLOCK APPEARS ON DISPLAY MAG. TEMP FUSE OVEN THERMAL 120VAC CUT OUT 60 Hz CONTROL UNIT N. O SECONDARY INTERLOCK RELAY STOP HOOD FAN POWER SWITCH THERMAL TRANSFORMER CUT OUT High OVEN...

  • Page 13

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C DESCRIPTION AND FUNCTION OF COMPONENTS monitor switch contacts. DOOR OPEN MECHANISM CAUTION: BEFORE REPLACING A BLOWN MONITOR The door is opened by pulling the door handle, refer to the FUSE TEST THE DOOR SENSING SWITCH, Figure D-. SECONDARY INTERLOCK RELAY (RY2), RE- LAY (RY), PRIMARY INTERLOCK SWITCH Latch...

  • Page 14: Troubleshooting Guide

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C STIRRER MOTOR The stirrer motor drives the stirrer fan to stir the microwave radiation from the waveguide. HOOD LAMP The hood lamps are mounted at the hood lamp angle on the base cover. The hood lamps can be turned off and on by touching the WORK LIGHT pad or the NIGHT LIGHT pad.

  • Page 15

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C CK = Check / RE = Replace...

  • Page 16: Test Procedure

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER MAGNETRON ASSEMBLY 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. 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 17

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C 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. 2.

  • Page 18

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 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. CAUTION: IF THE TEMPERATURE FUSE INDICATES AN OPEN CIRCUIT AT ROOM TEMPERATURE, REPLACE TEMPERATURE FUSE.

  • Page 19

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER MONITOR SWITCH 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. Before performing this test, make sure that the secondary interlock switch and the primary interlock relay are operating properly, according to the above Switch Test Procedure.

  • Page 20

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER HOOD THERMAL CUT-OUT 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. A continuity check across the thermal cut-out terminals should indicate an open circuit unless the temperature of the thermal cut-out reaches approximately 40 F(60 C) or more.

  • Page 21

    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. In this service manual, the touch control panel assembly is divided into two units, Control Unit and Key Unit, and also the Control Unit is divided into two units, LSI Unit and Power Unit, and troubleshooting by unit replacement is described according to the symptoms indicated.

  • Page 22

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 2. Control Unit. The following symptoms indicate a defective control unit. Before replacing the control unit, perform the Key unit test (Procedure M) to determine if control unit is faulty. 2- In connection with pads.

  • Page 23

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER RELAY 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. 5.

  • Page 24

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER STEPS OCCURRENCE CAUSE OR CORRECTION Only pattern at "a" is broken. *Insert jumper wire J and solder. Pattern at "a" and "b" are broken. *Insert the coil RCILF2003YAZZ between "c" and "d". 5) Make a visual inspection of the varistor.

  • Page 25

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER AH SENSOR TEST Checking the initial sensor cooking condition WARNING :The oven should be fully assembled before following procedure. () The oven should be plugged in at least two minutes before sensor cooking. (2) Room temperature should not exceed 95°F (35°C).

  • Page 26

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C CHECKING CONTROL UNIT () 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 sensor connector that is mounted to control panel. (5) Then connect the dummy resistor circuit (see fig.) to the sensor connector of control panel.

  • Page 27

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C 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. 5.

  • Page 28: Touch Control Panel Assembly

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL The touch control section consists of the following units Symbol Voltage Application as shown in the touch control panel circuit. -5.3V LSI(IC) () Key Unit 3) Synchronizing Signal Circuit (2) Control Unit (The Control unit consists of LSI Unit and The power source synchronizing signal is available in Power U nit)

  • Page 29

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C 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 30

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C 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. Key strobe signal. Signal applied to touch-key section. A pulse signal is input to P43-P46 terminal while one of G6 line keys on key matrix is touched.

  • Page 31

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB PLMVZ169GCC NOTES...

  • Page 32

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C ABSOLUTE HUMIDITY SENSOR CIRCUIT (1) Structure of Absolute Humidity Sensor balance the bridge circuit is deviated to increase the The absolute humidity sensor includes two thermistors voltage available at AN1 terminal of the LSI. as shown in the illustration. One thermistor is housed in Then the LSI observes that voltage at AN1 terminal and the closed vessel filled with dry air while another in the compares it with its initial value, and when the comparison...

  • Page 33

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C SERVICING 1. Precautions for Handling Electronic Components 4) Re-install the outer case (cabinet). This unit uses CMOS LSI in the integral part of the circuits. 5) Re-connect the power supply cord after the outer When handling these parts, the following precautions case is installed.

  • Page 34: Component Replacement And Adjustment Procedure

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C 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. (Example) High Voltage Capacitor, Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness etc..

  • Page 35

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C to remove. exhaust louver 5. Remove the louver covers A, B, and C from the hood 6. Now, the hood exhaust louver is free. REMOVAL OF OVEN FROM WALL (Two persons recommended to remove the oven) .

  • Page 36: Magnetron Removal

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C 7. Disconnect the connector CN-F from the control unit. 6.Remove the lamp socket from the lamp angle. 8. Remove one () screw holding the hood duct to the oven 7.Pull the wire leads from the oven lamp socket by pushing cavity front plate.

  • Page 37

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C THERMAL CUT-OUT (CAVITY) REMOVAL . Disconnect the power supply cord and remove the oven 9. Now, the thermal cut-out (cavity) is free. from wall and remove outer case. (Refer to procedure NOTE: When the tab is broken or turned off, use the another of "Removal of Oven from Wall"...

  • Page 38

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C 2. Hold the center of the bracket which supports the shaft * Make sure that the axis of the shaft is not slanted. of the fan motor on the flat table. 6. Install the hood duct to the oven cavity with the one () 3.

  • Page 39

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C CONTROL PANEL ASSEMBLY, CONTROL UNIT AND KEY UNIT REMOVAL . Disconnect the power supply cord. key fixing plate. 2. Open the door and block it open. 6. Release the one () tab holding the LCD to the LCD 3.

  • Page 40: Door Replacement

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C DOOR SENSING SWITCH, PRIMARY INTERLOCK SWITCH, AND MONITOR SWITCH ADJUSTMENT in the latched position. First check upper position of latch . Disconnect the power supply cord and remove the oven hook, pushing and pulling upper portion of door toward from wall and remove outer case.

  • Page 41: Door Disassembly

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB around door with an approved microwave survey meter. PLMVZ169GCC Hood Exhaust Louver (Refer to Microwave Measurement Procedure.) Upper Door Hige Pin Note: The door on a microwave oven is designed to act as an electronic seal preventing the leakage Upper of microwave energy from oven cavity during Oven...

  • Page 42: Pictorial Diagram

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C NOISE FILTER BOARD...

  • Page 43: Power Unit Circuit

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C Figure S-2. Power Unit Circuit...

  • Page 44: Lsi Unit Circuit

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C...

  • Page 45: Printed Wiring Board

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C Figure S-5. Printed Wiring Board...

  • Page 46: Parts List

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C OVEN AND CABINET PARTS...

  • Page 47

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C CONTROL PANEL PARTS DOOR PARTS MISCELLANEOUS...

  • Page 48: Packing And Accessories

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C PACKING AND ACCESSORIES TOP PAD DOOR PROTECTOR WRAP COVER TURNTABLE TRAY DOOR PAD INSTALL MATERIAL ASSEMBLY RACK OPERATION MANUAL WALL TEMPLATE RACK HOLDER INSTALLATION INSTRUCTION TOP TEMPLATE GREASE FILTER (x 2) DAMPER ASSEMBLY BOTTOM PAD ACCESSORY HOLDER Non-replaceable items PACKING CASE...

  • Page 49: Publication

    GLMV169GSB GLMV169GBB GLMV169GQB PLMVZ169GCB/C 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 of the publisher.

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