Sharp R-530EK service manual Touch Control Panel Assembly

Page 23

R - 5 3 0 E K

R - 530EW

TOUCH CONTROL PANEL ASSEMBLY

OUTLINE OF TOUCH CONTROL PANEL

The touch control section consists of the following units.

(1)Key Unit

(2)Control Unit (The Control Unit consists of Power Unit and LSI Unit).

The principal functions of these units and the signals com- municated among them are explained below.

Key Unit

The key unit is composed of a matrix, signals generated in the LSI are sent to the key unit through P110-P117. When a key pad is touched, a signal is completed through the key unit and passed back to the LSI through P100, P101, P102, P103, ANI6 and ANI7 to perform the function that was requested.

Control Unit

Control unit consists of LSI, ACL circuit, indicator circuit, power source circuit, relay circuit, buzzer circuit, synchro- nizing signal circuit, absolute humidity sensor circuit and back light circuit.

1)ACL

This circuit generates a signal which resets the LSI to the initial state when power is supplied.

2)Indicator Circuit

This circuit consists of 40 segments and 16 common electrodes using a Liquid Crystal Display. The Liquid Crystal Display (LCD) is drived by LCD driver IC3.

3)Power Source Circuit

This circuit generates voltages necessary in the control unit from the AC line voltage.

In addition, the synchronizing signal is available in order to compose a basic standard time in the clock circuit.

4)Relay Circuit

A circuit to drive the magnetron, fan motor, turntable motor and light the oven lamp.

5)Buzzer Circuit

The buzzer is responsive to signals from the LSI to emit audible sounds (key touch sound and completion sound).

6)Synchronizing Signal Circuit

The power source synchronizing signal is available in order to compose a basic standard time in the clock circuit.

It accompanies a very small error because it works on commercial frequency.

7)Door Sensing Switch

A switch to “tell” the LSI if the door is open or closed.

8)Back Light Circuit

A circuit to drive the back light (Light emitting diodes LD10- LD15).

9)Absolute Humidity Sensor Circuit

This circuit detects moisture of the cooking food to allow its automatic cooking.

Symbol

Voltage

Application

VC -5V LSI(IC1)

21

Image 23
Contents Models R 5 3 0 E K R-530EW Table of ContentsBefore Servicing Dont Touch Before Servicing When the testing is completedLeakage test Microwave Measurement ProcedureRequirements Foreword Sharp PLAZA, MahwahMicrowave Oven 530EK/ R-530EWGrounding Instructions SpecificationGeneral Information DescriptionTouch Control Panel Oven DiagramDescription of Operating Sequence OperationCooking Sequence MicrowaveFigure O-1. Oven Schematic-Off Condition Description and Function of Components Troubleshooting Guide CK = Check / RE = Replace Power Transformer Test Test ProceduresProcedure Letter Component Test Magnetron Assembly Test Microwave Output PowerHigh Voltage Rectifier Test Procedure Letter Component TestCavity Temperature Fuse Test Magnetron Temperature Fuse TestPrimary Interlock System Test Secondary Interlock Switch TestDoor Sensing Switch Monitor Switch TestBlown Monitor Fuse Test Touch Control Panel Assembly TestBefore testing KEY Unit Test Compu Defrost Test Relay TestFoil Pattern on the Printed Wiring Board Test Procedure Component Test LetterWater load cooking test Testing Method for AH Sensor AND/OR Control UnitAH Sensor Test Checking the initial sensor cooking conditionSensor Dummy Resistor Circuit Checking Control UnitTouch Control Panel Assembly LSIIXA098DR Signal coming from touch key Pin No Signal DescriptionSignal synchronized with commercial power source frequency Key strobe signalCommon data signal COM7 Power source voltage GND0VInternal clock oscillation frequency control input setting Common data signal COM8Structure of Absolute Humidity Sensor Common data signal COM9Common data signal COM10 Absolute Humidity Sensor CircuitKRC243M Touch Control Panel ServicingOuter Case Removal Component Replacement and Adjustment ProcedureMagnetron Removal Power Transformer RemovalReinstallation High Voltage Rectifier and High Voltage Capacitor RemovalTurntable Motor Removal Positive Lock Connector NO-CASE Type RemovalControl Panel Assembly Removal Oven Lamp and Lamp Socket RemovalRemoval AH Sensor ReplacementInstallation Cooling FAN Motor RemovalRemoval Door ReplacementAfter adjustment, check the following Sealer Film ReinstallationAfter any service, make sure of the following InstallationHigh Voltage Components Figure S-1. Pictorial DiagramFigure S-2. Power Unit Circuit OFF Cook CircuitRY1 RY3 TTM ZD1SP1 VRB RY2Control Panel Parts Parts ListElectric Parts Cabinet PartsSCREWS,NUTS and Washers HOW to Order Replacement PartsDoor Parts MiscellaneousOven and Cabinet Parts Control Panel Parts Door Parts Miscellaneous Packing and Accessories Copyright 2001 by Sharp Corporation ALL Rights Reserved

R-530EK specifications

The Sharp R-530EK is a notable microwave oven that combines functionality with innovation to enhance cooking convenience. With a sleek design and user-friendly interface, this model has earned a place in many kitchens around the globe.

One of the primary features of the Sharp R-530EK is its powerful microwave output. The oven boasts a maximum power of 900 watts, ensuring that food can be heated quickly and evenly. This power level allows users to prepare a variety of meals, from reheating leftovers to cooking dishes from scratch, in significantly less time than traditional cooking methods.

The R-530EK is equipped with a spacious interior, offering 25 liters of capacity. This ample space allows for cooking larger dishes or multiple servings at once. The turntable design ensures even cooking by rotating food during the heating process, further enhancing the microwave's efficiency.

Another standout feature of the Sharp R-530EK is its array of pre-programmed auto-cook menus. These presets simplify cooking by providing specific times and power levels for various types of food, including popcorn, pizzas, and oatmeal. Users can simply select the appropriate setting, and the microwave takes care of the rest, making it ideal for those who may not have extensive cooking experience.

The microwave utilizes advanced inverter technology, a feature that sets it apart from many conventional microwave ovens. Inverter technology allows for continuous and consistent power output, providing more precise temperature control. This means that delicate foods such as seafood or chocolate can be heated without the risk of overcooking or burning, resulting in better texture and flavor.

Additionally, the R-530EK is designed with multiple cooking functions that enhance its versatility. These include defrosting capabilities, grilling options, and even signals indicating the completion of cooking cycles. The easy-to-read digital display and intuitively designed buttons contribute to the overall user experience, making it accessible for individuals of all ages.

Moreover, this microwave oven ensures safety with features such as a child lock, which prevents accidental operation by little hands. The Sharp R-530EK is both an efficient and reliable addition to any kitchen, embodying the perfect blend of cutting-edge technology and practical design to meet the demands of modern cooking. With its impressive range of features and performance capabilities, it stands as a valuable tool for aspiring chefs and busy families alike.