Electrolux FMV156DBE Shapes of Electronic Components, Servicing of Touch Control Panel

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FMV156DBE

FMV156DSE

FMV156DQE

FMV156DCF

SERVICING

1.Precautions for Handling Electronic Components This unit uses CMOS LSI in the integral part of the circuits. When handling these parts, the following precautions should be strictly followed. CMOS LSI have extremely high impedance at its input and output terminals. For this reason, it is easily influenced by the surrounding high voltage power source, static electricity charge in clothes, etc. and sometimes it is not fully protected by the built-in protection circuit.

In order to protect CMOS LSI.

1)When storing and transporting, thoroughly wrap them in aluminium foil. Also wrap all PW boards containing them in aluminium foil.

2)When soldering, ground the technician as shown in the figure and use grounded soldering iron and work table.

approx. 1M ohm

2. Shapes of Electronic Components

Transistor

KRC243M

EC B

3.Servicing of Touch Control Panel

We describe the procedures to permit servicing of the touch control panel of the microwave oven and the precautions you must take when doing so.To perform the servicing, power to the touch control panel is available either from the power line of the oven itself or from an external power source.

(1)Servicing the touch control panel with power supply of the oven:

CAUTION:

THE HIGH VOLTAGE TRANSFORMER OF THE MICROWAVE OVEN IS STILL LIVE DURING SERVICING AND PRESENTS A HAZARD.

Therefore, before checking the performance of the touch control panel,

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)Disconnect the leads to the primary of the power transformer.

5)Ensure that these leads remain isolated from other components and oven chassis by using insulation tape.

6)After that procedure, re-connect the power supply cord.

After checking the performance of the touch control panel,

1)Disconnect the power supply cord.

2)Open the door and block it open.

3)Re-connect the leads to the primary of the power

transformer.

4)Re-install the outer case (cabinet).

5)Re-connect the power supply cord after the outer case is installed.

6)Run the oven and check all functions.

A.On some models, the power supply cord between the touch control panel and the oven itself is so short that the two can’t be separated. For those models, check and repair all the controls (sensor-related ones included) of the touch control panel while keeping it connected to the oven.

B.On some models, the power supply cord between the touch control panel and the oven proper is long enough that they may be separated from each other. For those models, it is possible to check and repair the controls of the touch control panel while keeping it apart from the oven proper; in this case you must short both ends of the door sensing switch (on PWB) of the touch control panel with a jumper, which activates an operational state that is equivalent to the oven door being closed. As for the sensor-related controls of the touch control panel, checking them is possible if dummy resistor(s) with resistance equal to that of the controls are used.

(2)Servicing the touch control panel with power supply from an external power source:

Disconnect the touch control panel completely from the oven proper, and short both ends of the door sensing switch (on PWB) of the touch control panel, which activates an operational state that is equivalent to the oven door being closed. Connect an external power source to the power input terminal of the touch control panel, then it is possible to check and repair the controls of the touch control panel it is also possible to check the sensor-related controls of the touch control panel by using the dummy resistor(s).

4.Servicing Tools

Tools required to service the touch control panel assembly.

1)Soldering iron: 30W

(It is recommended to use a soldering iron with a grounding terminal.)

2)Oscilloscope: Single beam, frequency range: DC- 10MHz type or more advanced model.

3)Others: Hand tools

5.Other Precautions

1)Before turning on the power source of the control unit, remove the aluminium foil applied for preventing static electricity.

2)Connect the connectors of the key unit to the control unit being sure that the lead wires are not twisted.

3)After aluminium foil is removed, be careful that abnormal voltage due to static electricity etc. is not applied to the input or output terminals.

4)Attach connectors, electrolytic capacitors, etc. to PWB, making sure that all connections are tight.

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Contents Table of Contents Over the Range Microwave Oven ModelsBefore Servicing When the testing is completed Dont Touch Before ServicingRequirements Microwave Measurement ProcedureLeakage test Electrolux Product Specification General InformationOven Diagram Control Panel Operation Description of Operating SequenceHorizontal Venting Vertical VentingRE-CIRCULATION Inside Venting Figure O-1. Oven Schematic-Off Condition Description and Function of Components FunctionsTroubleshooting Guide CK = Check / RE = Replace Microwave Output Power Procedure Component Test Letter Magnetron Assembly TestPower Transformer Test High Voltage Capacitor Test Magnetron Temperature Fuse TestCavity Thermal CUT-OUT Test Procedure Component Test Letter TEMPERATURE, Replace Temperature FusePrimary Interlock Switch Test Door Sensing SwitchMonitor Switch Test Secondary Interlock Relay RY2Hood Thermal CUT-OUT Test ProcedureHood FAN Motor Test Before testing KEY Unit Test Relay TestFoil Pattern on the Printed Wiring Board Test Defrost Center Test1ST Stage 2ND Stage Level TimeRemoval Occurrence Cause or CorrectionSteps Occurrence Cause or Correction Procedure Component Test Letter Noise Filter Test Measuring Point Indication of OHM-METERDescription of LSI Touch Control Panel AssemblyLSI Signal to sound buzzer 2.0 kHz OUT Oven lamp, fan motor and turntable motor driving signalSignal coming from touch key Signal similar to P46Key strobe signal Hood lamp driving signalHood motor driving signal Segment data signalOther Precautions ServicingShapes of Electronic Components Servicing of Touch Control PanelComponent Replacement and Adjustment Procedure Hood Exhaust Louver RemovalPower Transformer Removal Re-installPictorial Diagram Hood FAN Motor RemovalMagnetron Removal High Voltage Rectifier and High Voltage Capacitor RemovalHood FAN Thermal CUT-OUT Removal Thermal CUT-OUT Cavity RemovalCooling FAN Motor Removal InstallationSide View Positive Lock Connector NO-CASE Type Removal Control Panel ASSEMBLY, Control Unit and KEY Unit RemovalPositive lock connector Turntable MotorKey unit location Control Unit and KEY Unit RemovalDoor Replacementdoor Assembly Removal Door Assembly RE-INSTALLDoor Disassembly Door Frame AssemblyChoke Cover Latch SPRING, Latch Head and Door PanelDiagram PictorialFigure S-2. Power Unit Circuit LSI Unit Circuit Figure S-4. Printed Wiring Board Parts List Electric PartsCabinet Parts Control Panel PartsMiscellaneous Door PartsSCREWS,NUTS, Washers and Other Oven and Cabinet Parts Control Panel Parts Door Parts Miscellaneous Packing and Accessories Non-replaceable itemsFMV156DBE FMV156DSE FMV156DQE FMV156DCF FMV156DBE FMV156DSE FMV156DQE FMV156DCF FMV156DBE FMV156DSE FMV156DQE FMV156DCF

FMV156DBE specifications

The Electrolux FMV156DBE is a modern and versatile microwave oven that combines sleek aesthetics with cutting-edge technology, making it a popular choice for contemporary kitchens. This model offers a range of advanced features designed to streamline cooking and enhance convenience while ensuring users can prepare meals efficiently.

One of the standout features of the Electrolux FMV156DBE is its powerful 1.6 cubic feet capacity, which provides ample space for cooking various dishes, from reheating leftovers to defrosting frozen goods. Its 1,000-watt power output allows for fast and efficient cooking, ensuring that food is heated evenly and thoroughly. The microwave also features multiple power levels, enabling users to customize cooking intensity based on their specific needs.

This model is equipped with the Sensor Cooking technology, which automatically adjusts cooking time and power based on the moisture released from the food. This intelligent feature helps to prevent overcooking or undercooking, delivering perfectly prepared meals every time. Additionally, the FMV156DBE includes a range of pre-programmed cooking settings that cater to different food types, further enhancing usability and efficiency.

Another notable aspect of the Electrolux FMV156DBE is its intuitive touch control panel, allowing for easy navigation through cooking options and settings. The illuminated LED display enhances visibility, making it simple to monitor cooking progress at a glance. The microwave also features a convenient kitchen timer and a clock function, adding to its overall functionality.

The microwave not only excels in cooking performance but also in design. It features a contemporary stainless-steel finish that adds a touch of elegance to any kitchen decor. The streamlined design ensures it can fit seamlessly into various kitchen layouts, while the built-in design options provide flexibility for installation.

Safety is also a priority with the Electrolux FMV156DBE, which includes a child lock feature, preventing unintended use by little hands. This quality makes it an ideal appliance for families with children.

In summary, the Electrolux FMV156DBE is a highly functional microwave oven that features advanced cooking technologies, an ample cooking capacity, and a stylish design. With its combination of performance, convenience, and safety features, it serves as a valuable addition to any modern kitchen.
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