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FMV156DBE
FMV156DSE
FMV156DQE
ELECTROLUX
FMV156DCF
SERVICE MANUAL
S95M241FM156E
OVER THE RANGE
MICROWAVE OVEN
FMV156DBE
MODELS
FMV156DSE
FMV156DQE
FMV156DCF
FMV 56DCF
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 f
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FMV156DBE FMV156DSE FMV156DQE FMV156DCF PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPO- SURE TO EXCESSIVE MICROWAVE ENERGY (a) Do not operate or allow the oven to be operated with the door open. (b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source, and make repairs as necessary: () interlock operation, (2) proper door closing, (3) seal and sealing surfaces (arcing, wear, and other damage),
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FMV156DBE FMV156DSE FMV156DQE FMV156DCF 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.. Read the Service Manual carefully and follow all instructions. Don't Touch ! Danger High Voltage When the test
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FMV156DBE FMV156DSE FMV156DQE FMV156DCF MICROWAVE MEASUREMENT PROCEDURE A. Requirements: ) Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave 2 oven should not exceed mW/cm at any point 5cm or more from the external surface of the oven, measured prior to 2 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. 2) Safety interlock s
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FMV156DBE FMV156DSE FMV156DQE FMV156DCF SERVICE MANUAL ELECTROLUX PRODUCT DESCRIPTION OVER THE RANGE MICROWAVE OVEN GENERAL INFORMATION FMV156DBE / FMV156DSE FMV156DQE / FMV156DCF FOREWORD OPERATION This Manual has been prepared to provide Electrolux Home Prod- ucts Service Personnel with Operation and Service Information for the TROUBLESHOOTING GUIDE AND ELECTROLUX OVER THE RANGE MICROWAVE OVENS, FM- TEST PROCEDURE V56DBE, FMV56DSE, FMV56DQE, FMV56DCF. It is recommended that service per
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FMV156DBE FMV156DSE FMV156DQE FMV156DCF PRODUCT SPECIFICATION ITEM DESCRIPTION Power Requirements 20 Volts / 4. 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" Cooking Cavity Dimensions Width 7- /6" Height 4-5/6" .5 Cubic F eet Depth 9-7/8" Hood lamp 2 bulbs, 20W x 2, Incandescent light bulbs Hood fan Approx. 300 C.F.M. (
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FMV156DBE FMV156DSE FMV156DQE FMV156DCF 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. The receptacle should be located inside the cabinet directly above the Microwave Oven/Hood system mounting location. 3-Pronged Plug Grounded Receptacle Box G
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FMV156DBE FMV156DSE FMV156DQE FMV156DCF 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. 8
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FMV156DBE FMV156DSE FMV156DQE FMV156DCF OPERATION DESCRIPTION OF OPERATING SEQUENCE The following is a description of component functions dur- of the primary interlock switch, and door sensing switch ing oven operation. is mechanically associated with the door so that it will function in the following sequence. OFF CONDITION () When the door opens from a closed position, the Closing the door activates the door sensing switch and secondary interlock relay, door sensing switch, and seconda
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FMV156DBE FMV156DSE FMV156DQE FMV156DCF 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 cover, up through the right and left sides of the oven cavity, then discharged vertically at rear center top of the oven, into the customer's vent system. To Duct To Duct Hood Fan Motor Hood Intake Duct R Grease Filte
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FMV156DBE FMV156DSE FMV156DQE FMV156DCF SCHEMATIC NOTE: CONDITION OF OVEN . DOOR CLOSED. 2. CLOCK APPEARS ON DISPLAY. RED MAG.TEMP.FUSE RED RED ORG RED GRN CAVITY RED THERMAL RED 120VAC GND CUTOUT ORG 60Hz CONTROLUNIT E2 WHT C3 N.O. COM. PPL A5 POWER TRANSFORMER DOOR A7 L SENSING RY6 BLK SWITCH HOODFAN THERMAL E1 CUTOUT HUMIDITY H (RY2) OVENLAMP SENSOR F3 RY5 RELAY SECONDARY INTERLOCK (RY1) HOOD RELAY CAPACITOR F2 HIGH F1 VOLTAGE CAPACITOR A1 A3 A9 N.O. COM. xxuF ORG MONITOR HOOD GND BRN MO
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FMV156DBE FMV156DSE FMV156DQE FMV156DCF DESCRIPTION AND FUNCTION OF COMPONENTS CAUTION: BEFORE REPLACING A BLOWN MONITOR DOOR OPEN MECHANISM FUSE TEST THE DOOR SENSING SWITCH, The door is opened by pulling the door handle, refer to the SECONDARY INTERLOCK RELAY (RY2), RE- Figure D-. LAY (RY), PRIMARY INTERLOCK SWITCH AND MONITOR SWITCH FOR PROPER Latch heads OPERATION. (REFER TO CHAPTER "TEST Latch hook PROCEDURE"). NOTE: MONITOR FUSE AND MONITOR SWITCH ARE REPLACED AS AN ASSEMBLY. D
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FMV156DBE FMV156DSE FMV156DQE FMV156DCF TROUBLESHOOTING GUIDE Never touch any part in the circuit with your hand or an uninsulated tool while the power supply is con- nected. 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. These tests are given a procedure letter which will be found in the "Test Procedure "section. IMPORTANT: If the o
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CK LOW VOLTAGE CK NO POWER AT OUTLET RE SHORTED IN POWER CORD CK OPENED OR SHORTED WIRING CK HOOD MOTOR CAPACITOR RE HOOD LAMP OR SOCKET CK TURNTABLE OFF CONDITION RE TURNTABLE MOTOR RE FAN MOTOR RE OVEN LAMP OR SOCKET O FOIL PATERN ON P.W.B. N RELAY (RY-5) N RELAY (RY-4) N RELAY (RY-3) N RELAY (RY-2) N RELAY (RY-1) M KEY UNIT L CONTROL UNIT K HOOD FAN MOTOR J HOOD HERMAL CUT-OUT I MONITOR FUSE H MONITOR SWITCH G SECONDARY INTERLOCK SYSTEM F PRIMARY INTERLOCK SWITCH E TEMPERATURE FUSE OR THERMAL
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FMV156DBE FMV156DSE FMV156DQE FMV156DCF TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER A 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. 5. To test for a shorted magnetron, connect the ohmmeter leads be
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FMV156DBE FMV156DSE FMV156DQE FMV156DCF 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.) C HIGH VOLTAGE RECTIFIER 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. Isolate the rectifier from the circuit. Using the highest ohm scale of the meter, read the resistance across the
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FMV156DBE FMV156DSE FMV156DQE FMV156DCF TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER CAUTION: IF THE TEMPERATURE FUSE INDICATES AN OPEN CIRCUIT AT ROOM TEMPERATURE, REPLACE TEMPERATURE FUSE. 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, RE
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FMV156DBE FMV156DSE FMV156DQE FMV156DCF 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. The relay contacts should be open. If the relay contacts are closed, replace the
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FMV156DBE FMV156DSE FMV156DQE FMV156DCF TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER J 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 40½F(60½C) or more. At that temperature, the contacts will close. The the
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FMV156DBE FMV156DSE FMV156DQE FMV156DCF TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER L 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, Con- trol Unit and Key Unit, and also the Control Unit is divided
