Table of Contents
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PLMB209DC
BEFORE SERVICING ..................................................................................................... INSIDE FRONT COVER
WARNING TO SERVICE PERSONNEL .............................................................................................................. 1
MICROWAVE MEASUREMENT PROCEDURE .................................................................................................. 2
FOREWORD AND WARNING ................................................................................................................................3
PRODUCT SPECIFICATIONS ...............................................................................................................................4
GENERAL INFORMATION ...................................................................................................................................4
OPERATION .........................................................................................................................................................6
TROUBLESHOOTING GUIDE ............................................................................................................................. 10
TEST PROCEDURE ............................................................................................................................................ 11
TOUCH CONTROL PANEL ASSEMBLY ............................................................................................................. 21
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE .................................................................. 27
PICTORIAL DIAGRAM ........................................................................................................................................ 34
LSI UNIT CIRCUIT ............................................................................................................................................... 35
PRINTED WIRING BOARD ................................................................................................................................. 36
PARTS LIST ........................................................................................................................................................ 37
PACKING AND ACCESSORIES ......................................................................................................................... 41
This document has been published to be used for after sales service only. The contents are subject to
change without notice.
ELECTROLUX
SERVICE MANUAL
MODELS
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 con-
tain 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 Volt-
age Rectifier Assembly, High Voltage Harness etc..)
TABLE OF CONTENTS
P. O. Box 212378, Augusta, GA, 30917
800•944•9044
S64M239B209DE
MICROWAVE OVENS
GLMB209DB
GLMB209DS
GLMB209DQ
PLMB209DC
GLMB209DB
GLMB209DS
GLMB209DQ
PLMB209DC
Page
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Summary of Contents for Electrolux GLMB209DB
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Page 1: Table Of Contents
PARTS LIST ................................ 37 PACKING AND ACCESSORIES ......................... 41 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... -
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 1) tell the user not to operate the oven and 2) contact ELECTROLUX HOME PRODUCTS, INC. -
Page 3: Warning To Service Personnel
GLMB209DB GLMB209DS GLMB209DQ PLMB209DC 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 Trans- former, Magnetron, High Voltage Rectifier Assem- bly, High Voltage Harness etc.. -
Page 4: Microwave Measurement Procedure
GLMB209DB GLMB209DS GLMB209DQ PLMB209DC MICROWAVE MEASUREMENT PROCEDURE A. Requirements: 1) Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven should not exceed 1mW/cm at any point 5cm or more from the external surface of the oven, measured prior to acquisition... -
Page 5: Foreword And Warning
GLMB209DB / GLMB209DS GENERAL INFORMATION GLMB209DQ / PLMB209DC FOREWORD OPERATION This Manual has been prepared to provide Electrolux Home Products Service Personnel with Operation and Service Information for the ELECTROLUX COUNTER TOP MICROWAVE OVENS, GLMB209DB, GLMB209DS, GLMB209DQ, PLMB209DC. TROUBLESHOOTING GUIDE AND... -
Page 6: Product Specifications
GLMB209DB GLMB209DS GLMB209DQ PLMB209DC SPECIFICATION ITEM DESCRIPTION Power Requirements 120 Volts 14.3 Amperes, 1700 watts 60 Hertz Single phase, 3 wire grounded Power Output 1200 watts (IEC TEST PROCEDURE) Operating frequency of 2450MHz Case Dimensions Width 24" Height 13-3/8" Depth 19-1/8"... -
Page 7: Oven Diagram
GLMB209DB GLMB209DS GLMB209DQ PLMB209DC a qualified electrician and have it replaced with a properly grounded three- Grounded pronged wall receptacle or have a grounding adapter properly grounded Receptacle Box and polarized. If the extension cord must be used, it should be a 3-wire, 15 amp. -
Page 8: Operation
GLMB209DB GLMB209DS GLMB209DQ PLMB209DC OPERATION DESCRIPTION OF OPERATING SEQUENCE The following is a description of component functions during the primary interlock switch and secondary interlock relay oven operation. and is mechanically associated with the door so that it will function in the following sequence. - Page 9 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC SENSOR COOKING CONDITION Using the SENSOR function, food is cooked without figuring 2. The coil of shut-off relay (RY-1) is energized, the time, power level or quantity. When the oven senses enough turntable motor are turned on, but the power transformer steam from the food, it relays the information to its is not turned on.
- Page 10 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC Note:* Indicates component SCHEMATIC NOTE: CONDITION OF OVEN 1. Door Closed 2. CLOCK APPEARS ON DISPLAY C AV IT Y C /T T E MP E R AT UR E F US E OR G F US E...
- Page 11 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC DESCRIPTION AND FUNCTION OF COMPONENTS DOOR OPEN MECHANISM 3. If the door is opened, and the secondary interlock relay (RY2) and primary interlock switch contacts fail to open, The door is opened by pushing the open button on the control the C/T fuse blows simultaneously with closing of the panel, refer to the Figure D-1.
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Page 12: Troubleshooting Guide
GLMB209DB GLMB209DS GLMB209DQ PLMB209DC TROUBLESHOOTING GUIDE Never touch any part in the circuit with your hand or an uninsulated tool while the power supply is connected. When troubleshooting the microwave oven, it is helpful to follow the Sequence of Operation in performing the checks. Many of the possible causes of trouble will require that a specific test be performed. -
Page 13: Test Procedure
GLMB209DB GLMB209DS GLMB209DQ PLMB209DC CK = Check / RE = Replace RE RE A B C D E E F F G H RE RE CK I CK CK CK J K L M N TEST PROCEDURE PROBLEM CONDITION Home fuse or circuit breaker blows... - Page 14 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 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 1 ohm. 5. To test for a shorted magnetron, connect the ohmmeter leads between the magnetron filament leads and chassis ground.
- Page 15 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER HIGH VOLTAGE RECTIFIER TEST 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Isolate the rectifier from the circuit. Using the highest ohm scale of the meter, read the resistance across the terminals and observe, reverse the leads to the rectifier terminals and observe meter reading.
- Page 16 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 5. If the C/T fuse is blown when the door is opened, check the secondary interlock relay, primary interlock switch and monitor switch according to the "TEST PROCEDURE" for those switches before replacing the blown monitor fuse.
- Page 17 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER MONITOR SWITCH TEST 1. 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 primary interlock switch and the secondary interlock relay are operating properly, according to the above Switch Test Procedure.
- Page 18 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER Control Unit The following symptoms indicate a defective control unit. 2-1 In connection with pads. a) When touching the pads, a certain group of pads do not produce a signal.
- Page 19 GLMB209DB GLMB209DS GLMB209DQ TEST PROCEDURES PLMB209DC PROCEDURE COMPONENT TEST LETTER Ground Fresh Baked Chicken Beverage Rice Popcorn Meats Potato Rolls Breast Plus Fish/ Frozen Frozen Steaks/ Reheat START Seafood Entrees Rolls 1 Min Chops (DEFROST) Frozen Timer/ Ground Veggie Clock...
- Page 20 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER FOIL PATTERN ON THE PRINTED WIRING BOARD TEST 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 21 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC AH SENSOR TEST Checking the initial sensor cooking condition WARNING : The oven should be fully assembled before following procedure. (1) The oven should be plugged in at least two minutes before sensor cooking. (2) Room temperature should not exceed 95½F (35½C).
- Page 22 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC If new sensor dose not operate properly, the problem is with the control unit, and refer to explanation below. CHECKING CONTROL UNIT (1) Disconnect the power supply cord, and then remove outer case. (2) Open the door and block it open.
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Page 23: Touch Control Panel Assembly
GLMB209DB GLMB209DS GLMB209DQ PLMB209DC TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL 3) Power Source Circuit The touch control section consists of the following units. This circuit generates voltages necessary in the control unit from the AC line voltage. - Page 24 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC DESCRIPTION OF LSI The I/O signal of the LSI is detailed in the following table. Pin No. Signal Description VL2-VL1 Power source voltage input terminal. Standard voltage for LCD. AN7-AN4 Terminal to change cooking input according to the Model.
- Page 25 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC Pin No. Signal Description Signal similar to AN3. When either G11 line on key matrix is touched, a corresponding signal will be input into P41. Connected to GND through the pull-down resistor. RESET Auto clear terminal.
- Page 26 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC Pin No. Signal Description Connected to LCD. The relation between signals are as follows: LSI signal (Pin No.) LCD (Pin No.) LSI signal (Pin No.) LCD (Pin No.) SEG0 (72) ........ SEG 0 SEG11 (61) ....... SEG 11 SEG1 (71) ........
- Page 27 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC ABSOLUTE HUMIDITY SENSOR CIRCUIT (1) Structure of Absolute Humidity Sensor balance of 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...
- Page 28 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC TOUCH CONTROL PANEL SERVICING A. On some models, the power supply cord between the 1. Precautions for Handling Electronic Components touch control panel and the oven itself is so short that the This unit uses CMOS LSI in the integral part of the two can’t be separated.
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Page 29: Component Replacement And Adjustment Procedure
GLMB209DB GLMB209DS GLMB209DQ PLMB209DC COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE WARNING AGAINST HIGH VOLTAGE: Microwave ovens contain circuitry capable of producing very high voltage and current. Contact with the 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 30 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC CAUTION: 1. DISCONNECT OVEN FROM POWER SUP- PLY BEFORE REMOVING OUTER CASE. 2. DISCHARGE THE HIGH VOLTAGE CAPACI- TOR BEFORE TOUCHING ANY OVEN COM- PONENTS OR WIRING. Special screw NOTE: When replacing the outer case, the 2 special Torx screws must be reinstalled in the same locations.
- Page 31 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC OVEN LAMP AND LAMP SOCKET REMOVAL 1. Disconnect the power supply cord and remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Remove the oven lamp from the oven lamp socket.
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Page 32: Turntable Motor Removal
GLMB209DB GLMB209DS GLMB209DQ PLMB209DC Installation 1. Remove remaining adhesive on the control panel frame surfaces with a soft cloth soaked in alcohol. 2. Make sure that the LCD sheet and the liquid crystal display is installed in position. 3. Remove the backing paper from the new membrane switch and ribbon cable. - Page 33 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC COOLING FAN MOTOR REMOVAL REMOVAL CAUTION: 1. Disconnect the power supply cord and then remove outer * Do not reuse the removed fan blade because the hole case. (for shaft) may be larger than normal. 2. Open the door and block it open.
- Page 34 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC 3. Secure latch hook (with two (2) mounting screws) to oven and check continuity of the monitor circuit. Refer to chapter flange. "Test Procedure" and Adjustment procedure. 4. Make sure that the monitor switch is operating properly DOOR SENSING SWITCH/PRIMARY INTERLOCK SWITCH AND MONITOR SWITCH ADJUSTMENT 1.
- Page 35 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC 9. Release the door panel from twelve (12) tabs of door frame. 10.Remove the door panel from the door frame. 11.Now, door panel with sealer film is free. 12.Tear sealer film from door panel. 13.Now, door panel is free.
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Page 36: Pictorial Diagram
GLMB209DB GLMB209DS GLMB209DQ PLMB209DC... -
Page 37: Lsi Unit Circuit
GLMB209DB GLMB209DS GLMB209DQ PLMB209DC... -
Page 38: Printed Wiring Board
GLMB209DB GLMB209DS GLMB209DQ PLMB209DC CHIP SIDE CN-F 1 2 3 CN-B WH-2 WH-2 Q4 SP1 VRS1 Figure S-5 . Printed Wiring Board of Power Unit... -
Page 39: Parts List
GCABUB134MRP0 Outer case cabinet [GLMB209DQ] GCABUB087MRP0 Outer case cabinet [PLMB209DC] CONTROL PANEL PARTS CPWBFB101MRU0 CPU assy HPNLFB017MRF0 Control panel sub assembly [GLMB209DB/PLMB209DC] HPNLFB018MRF0 Control panel sub assembly [GLMB209DS] HPNLFB019MRF0 Control panel sub assembly [GLMB209DQ] PSHEPB173MRR0 Graphic sheet assy[GLMB209DB/PLMB209DC] PSHEPB174MRR0 Graphic sheet assy[GLMB209DS]... - Page 40 Screw : 4mm x 12mm XCBSD30P08000 Screw : 3mm x XHTSD40P08RV0 Screw : 4mm x 8mm LX-CZA070WRE0 Special screw (Torx tamper proof screw) XOPSD40P12XS0 Screw XOTSF40P12000 Screw : Outercase screws [GLMB209DB] XOTSE40P12000 Screw : Outercase screws [GLMB209DS/GLMB209DQ/PLMB209DC] XOTSE40P12000 Screw : Outercase screws...
- Page 41 GLMB209DB GLMB209DS GLMB209DQ PLMB209DC OVEN AND CABINET PARTS...
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Page 42: Control Panel Parts
GLMB209DB GLMB209DS GLMB209DQ PLMB209DC CONTROL PANEL PARTS DOOR PARTS MISCELLANEOUS Actual wire harness may be different from illustration. -
Page 43: Packing And Accessories
GLMB209DB GLMB209DS GLMB209DQ PLMB209DC PACKING AND ACCESSORIES TOP PAD ASSEMBLY DOOR PROTECTION SHEET 54 TURNTABLE TRAY PLASTIC BAG OPERATION MANUAL BOTTOM PAD ASSEMBLY TURNTABLE SUPPORT PACKING CASE... -
Page 44: Electrolux Home Products, Inc
GLMB209DB GLMB209DS GLMB209DQ PLMB209DC ELECTROLUX COPYRIGHT © 2004 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.