Sharp R-530EK Test Procedures, Procedure Letter Component Test Magnetron Assembly Test

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R - 5 3 0 E K

R - 530EW

TEST PROCEDURES

PROCEDURE

LETTER

COMPONENT TEST

AMAGNETRON ASSEMBLY 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.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. This test should indicate an infinite resistance. If there is little or no resistance the magnetron is grounded and must be replaced.

6.Reconnect all leads removed from components during testing.

7.Reinstall the outer case (cabinet).

8.Reconnect the power supply cord after the outer case is installed.

9.Run the oven and check all functions.

MICROWAVE OUTPUT POWER

The following test procedure should be carried out with the microwave oven in a fully assembled condition (outer case fitted).

HIGH VOLTAGES ARE PRESENT DURING THE COOK CYCLE, SO EXTREME CAUTION SHOULD BE OBSERVED.

Power output of the magnetron can be measured by performing a water temperature rise test. This test should only be used if above tests do not indicate a faulty magnetron and there is no defect in the following components or wiring: silicon rectifier, high voltage capacitor and power transformer. This test will require a 16 ounce (453cc) measuring cup and an accurate mercury thermometer or thermocouple type temperature tester. For accurate results, the following procedure must be followed carefully:

1.Fill the measuring cup with 16 oz. (453cc) of tap water and measure the temperature of the water with a thermometer or thermocouple temperature tester. Stir the thermometer or thermocouple through the water until the temperature stabilizes. Record the temperature of the water.

2.Place the cup of water in the oven. Operate oven at 100 PERCENT POWER/ P-HI selecting more than 60 seconds cook time. Allow the water to heat for 60 seconds, measuring with a stop watch, second hand of a watch or the digital read-out countdown.

3.Remove the cup from the oven and again measure the temperature, making sure to stir the thermometer or thermocouple through the water until the maximum temperature is recorded.

4.Subtract the cold water temperature from the hot water temperature. The normal result should be 33 to 62˚F(18.6 to 34.5˚C) rise in temperature. If the water temperatures are accurately measured and tested for the required time period the test results will indicate if the magnetron tube has low power output (low rise in water temperature) which would extend cooking time or high power output (high rise in water temperature) which would reduce cooking time. Because cooking time can be adjusted to compensate for power output, the magnetron tube assembly should be replaced only if the water temperature rise test indicates a power output well beyond the normal limits. The test is only accurate if the power supply line voltage is 120 volts and the oven cavity is clean.

BPOWER TRANSFORMER 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.Disconnect the primary input terminals and measure the resistance of the transformer with an ohmmeter. Check for continuity of the coils with an ohmmeter. On the R x 1 scale, the resistance of the primary coil should be less than 1 ohm and the resistance of the high voltage coil should be approximately 90 ohms; the resistance of the filament coil should be less than 1 ohm.

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.

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Contents Table of Contents Models R 5 3 0 E K R-530EWBefore Servicing When the testing is completed Dont Touch Before ServicingLeakage test Microwave Measurement ProcedureRequirements 530EK/ R-530EW Sharp PLAZA, MahwahMicrowave Oven ForewordDescription SpecificationGeneral Information Grounding InstructionsOven Diagram Touch Control PanelOperation Description of Operating SequenceMicrowave Cooking SequenceFigure O-1. Oven Schematic-Off Condition Description and Function of Components Troubleshooting Guide CK = Check / RE = Replace Microwave Output Power Test ProceduresProcedure Letter Component Test Magnetron Assembly Test Power Transformer TestMagnetron Temperature Fuse Test Procedure Letter Component TestCavity Temperature Fuse Test High Voltage Rectifier TestMonitor Switch Test Secondary Interlock Switch TestDoor Sensing Switch Primary Interlock System TestBlown Monitor Fuse Test Touch Control Panel Assembly TestBefore testing KEY Unit Test Relay Test Compu Defrost TestProcedure Component Test Letter Foil Pattern on the Printed Wiring Board TestChecking the initial sensor cooking condition Testing Method for AH Sensor AND/OR Control UnitAH Sensor Test Water load cooking testChecking Control Unit Sensor Dummy Resistor CircuitTouch Control Panel Assembly LSIIXA098DR Key strobe signal Pin No Signal DescriptionSignal synchronized with commercial power source frequency Signal coming from touch keyCommon data signal COM8 Power source voltage GND0VInternal clock oscillation frequency control input setting Common data signal COM7Absolute Humidity Sensor Circuit Common data signal COM9Common data signal COM10 Structure of Absolute Humidity SensorTouch Control Panel Servicing KRC243MComponent Replacement and Adjustment Procedure Outer Case RemovalHigh Voltage Rectifier and High Voltage Capacitor Removal Power Transformer RemovalReinstallation Magnetron RemovalOven Lamp and Lamp Socket Removal Positive Lock Connector NO-CASE Type RemovalControl Panel Assembly Removal Turntable Motor RemovalCooling FAN Motor Removal AH Sensor ReplacementInstallation RemovalRemoval Door ReplacementAfter adjustment, check the following Installation ReinstallationAfter any service, make sure of the following Sealer FilmFigure S-1. Pictorial Diagram High Voltage ComponentsFigure S-2. Power Unit Circuit Circuit OFF CookRY2 ZD1SP1 VRB RY1 RY3 TTMCabinet Parts Parts ListElectric Parts Control Panel PartsMiscellaneous HOW to Order Replacement PartsDoor Parts SCREWS,NUTS and WashersOven 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.
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