Electrolux FMV156DBE service manual Signal to sound buzzer 2.0 kHz, Signal coming from touch key

Page 26

FMV156DBE

FMV156DSE

FMV156DQE

FMV156DCF

Pin No.

Signal

I/O

 

Description

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

AN3

OUT

Back light circuit (Light emitting diodes) driving signal.

 

 

 

 

 

 

 

 

8

AN2

IN

To input signal which communicates the door open/close information to LSI.

 

 

 

Door close "H" level signal (0V). Door open "L" level signal (-5V).

 

9-10

AN1-AN0

OUT

Terminal not used.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11-13

P57-P55

OUT

Terminal not used.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

14

CNTR0

OUT

Signal to sound buzzer (2.0 kHz).

 

0.1 sec.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H : GND

 

 

 

 

A: key touch sound.

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B: Completion sound.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L : -5V

 

 

 

 

 

 

 

 

2.0 sec.

 

 

 

 

 

 

 

 

 

H : GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L : -5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

P53

OUT

Terminal not used.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

16

P52

OUT Oven lamp, fan motor and turntable motor driving signal

 

 

 

 

 

 

 

 

 

 

 

To turn on and off shut off relay (RY1).The square

 

 

 

 

 

 

 

16.7 msec.

 

 

 

 

 

 

 

 

H : GND

 

 

 

waveform voltage is delivered to the RY1 driving

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

circuit and RY2 control circuit.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L : -5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

During cooking

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

17-18

P51-P50

OUT

Terminal not used.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

19

P47

OUT

Magnetron high-voltage circuit driving signal.

 

 

 

 

 

 

 

OFF

 

 

 

 

 

 

 

H : GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

To turn on and off the cook relay (RY2). The

Maximum

 

 

 

output

ON

 

 

signals holds "L" level during microwave cooking

 

L : -5V

 

 

 

and "H" level while not cooking. In other cooking

OFF

 

OFF

H : GND

modes (variable cooking) the signal turns to "H"

70% of

24 sec.

 

 

 

level and "L" level in repetition according to the

maximum

ON

8 sec.

 

output

L : -5V

power level.

 

 

 

 

 

 

 

(ON and OFF times for other power level.)

20

P46

IN

Signal coming from touch key.

 

 

 

 

When either G12 line on key matrix is touched, a corresponding signal out of P20, P21,

 

 

 

P22, P25 and P26 will be input into P46. When no key is touched, the signal is held at "H"

 

 

 

level.

 

21

P45

IN

Signal similar to P46.

 

 

 

 

When either G11 line on key matrix is touched, a corresponding signal will be input into

 

 

 

P45.

 

22

P44

IN

Signal similar to P46.

 

 

 

 

When either G10 line on key matrix is touched, a corresponding signal will be input into

 

 

 

P44.

 

23

P43

IN

Signal similar to P46.

 

 

 

 

When either G9 line on key matrix is touched, a corresponding signal will be input into

 

 

 

P43.

 

24

INT0

IN

Signal synchronized with commercial power source frequency.

 

 

 

 

This is the basic timing for time processing of LSI.

 

H : GND

 

 

 

 

 

 

 

 

 

 

L : -5V

 

 

 

 

16.7 msec.

 

 

 

 

 

 

25

P41

OUT

Terminal not used.

 

26

P40

IN

Connected to GND through the pull-down resistor R100.

 

27

RESET

IN

Auto clear terminal.

 

Signal is input to reset the LSI to the initial state when power is applied.

28-29

P71-P70

OUT

Terminal not used.

30

XIN

IN

Internal clock oscillation frequency input setting.

The internal clock frequency is set by inserting the ceramic filter oscillation circuit with respect to XOUT terminal.

31

XOUT

OUT

Internal clock oscillation frequency control output.

 

 

 

Output to control oscillation input of XIN.

32

VSS

IN

Power source voltage: -5.0V.

 

 

 

VC voltage of power source circuit input.

26

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Contents Table of Contents Over the Range Microwave Oven ModelsBefore Servicing When the testing is completed Dont Touch Before ServicingLeakage test Microwave Measurement ProcedureRequirements Electrolux Product Specification General InformationOven Diagram Control Panel Operation Description of Operating SequenceRE-CIRCULATION Inside Venting Vertical VentingHorizontal Venting Figure O-1. Oven Schematic-Off Condition Description and Function of Components FunctionsTroubleshooting Guide CK = Check / RE = Replace Power Transformer Test Procedure Component Test Letter Magnetron Assembly TestMicrowave Output Power Cavity Thermal CUT-OUT Test Magnetron Temperature Fuse TestHigh Voltage Capacitor Test Primary Interlock Switch Test Procedure Component Test LetterTEMPERATURE, Replace Temperature Fuse Door Sensing SwitchMonitor Switch Test Secondary Interlock Relay RY2Hood FAN Motor Test ProcedureHood Thermal CUT-OUT Test Before testing KEY Unit Test Relay Test1ST Stage 2ND Stage Foil Pattern on the Printed Wiring Board TestDefrost Center Test Level TimeSteps Occurrence Cause or Correction Occurrence Cause or CorrectionRemoval Procedure Component Test Letter Noise Filter Test Measuring Point Indication of OHM-METERLSI Touch Control Panel AssemblyDescription of LSI Signal coming from touch key Signal to sound buzzer 2.0 kHzOUT Oven lamp, fan motor and turntable motor driving signal Signal similar to P46Hood motor driving signal Key strobe signalHood lamp driving signal Segment data signalShapes of Electronic Components Other PrecautionsServicing Servicing of Touch Control PanelComponent Replacement and Adjustment Procedure Hood Exhaust Louver RemovalPictorial Diagram Power Transformer RemovalRe-install Hood FAN Motor RemovalHood FAN Thermal CUT-OUT Removal Magnetron RemovalHigh Voltage Rectifier and High Voltage Capacitor Removal Thermal CUT-OUT Cavity RemovalSide View InstallationCooling FAN Motor Removal Positive lock connector Positive Lock Connector NO-CASE Type RemovalControl Panel ASSEMBLY, Control Unit and KEY Unit Removal Turntable MotorKey unit location Control Unit and KEY Unit RemovalDoor Replacementdoor Assembly Removal Door Assembly RE-INSTALLChoke Cover Door DisassemblyDoor Frame Assembly Latch SPRING, Latch Head and Door PanelDiagram PictorialFigure S-2. Power Unit Circuit LSI Unit Circuit Figure S-4. Printed Wiring Board Cabinet Parts Parts ListElectric Parts Control Panel PartsSCREWS,NUTS, Washers and Other Door PartsMiscellaneous 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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