Sharp R-530EK service manual AH Sensor Test, Checking the initial sensor cooking condition

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R - 5 3 0 E K

R - 530EW

TEST PROCEDURES

PROCEDURE

LETTER

COMPONENT TEST

10)Discharge high voltage capacitor.

11)Reconnect all leads removed from components during testing.

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

13)Reconnect the power supply cord after the outer case is installed.

14)Run the oven and check all functions.

NAH SENSOR TEST

Checking the initial sensor cooking condition

WARNING : The oven should be fully assembled before following procedure.

(1)The oven should be plugged in at least two minutes before sensor cooking.

(2)Room temperature should not exceed 95˚F (35˚C).

(3)The unit should not be installed in any area where heat and steam are generated. The unit should not be installed, for example, next to a conventional surface unit. Refer to the “INSTALLATION INSTRUCTIONS” of the operation manual.

(4)Exhaust vents are provided on the back of the unit for proper cooling and air flow in the cavity. To permit adequate ventilation, be sure to install so as not to block these vents. There should be some space for air circulation.

(5)Be sure the exterior of the cooking container and the interior of the oven are dry. Wipe off any moisture with a dry cloth or paper towel.

(6)The Sensor works with food at normal storage temperature. For example, chicken pieces would be at refrigerator temperature and canned soup at room temperature.

(7)Avoid using aerosol sprays or cleaning solvents near the oven while using Sensor settings. The sensor will detect the vapor given of by the spray and turn off before food is properly cooked.

(8)If the sensor has not detected the vapor of the food, ERROR will appear and the oven will shut off.

Water load cooking test

WARNING : The oven should be fully assembled before following procedure.

Make sure the oven has been plugged in at least two minutes before checking sensor cook operation. The cabinet should be installed and screws tightened.

(1)Fill approximately 200 milliliters (7.2 oz) of tap water in a 1000 milliliter measuring cup.

(2)Place the container on the center of tray in the oven cavity.

(3)Close the door.

(4)Touch the Timer/Clock pad once, the Power Level pad twice, the Start pad once and the number pad 1 once. Now, the oven is in the sensor cooking condition and "TEST", “SENSOR” and "COOK" will appear in the display.

(5)The oven will operate for the first 16 seconds, without generating microwave energy.

NOTE: ERROR will appear if the door is opened or STOP/CLEAR pad is touched during first stage of sensor cooking.

(6) After approximately 16 seconds, microwave energy is produced.

If ERROR is displayed, replace the AH sensor or check the control unit, refer to explanation below. If the oven stops after 5 minutes and ERROR is displayed, check the parts except for the AH sensor.

TESTING METHOD FOR AH SENSOR AND/OR CONTROL UNIT

To determine if the sensor is defective, the simplest method is to replace it with a new replacement sensor.

(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)Remove the AH sensor.

(5)Install the new AH sensor.

(6)Reconnect all leads removed from components during testing.

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

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

(9)Reconnect the oven to the power supply and check the sensor cook operation as follows:

9-1. Fill approximately 200 milliliters (7.2 oz) of tap water in a 1000 milliliter measuring cup.

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Contents Models R 5 3 0 E K R-530EW Table of ContentsBefore Servicing Dont Touch Before Servicing When the testing is completedMicrowave Measurement Procedure RequirementsLeakage test Microwave Oven Sharp PLAZA, Mahwah530EK/ R-530EW ForewordGeneral Information SpecificationDescription Grounding InstructionsTouch 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 Procedure Letter Component Test Magnetron Assembly Test Test ProceduresMicrowave Output Power Power Transformer TestCavity Temperature Fuse Test Procedure Letter Component TestMagnetron Temperature Fuse Test High Voltage Rectifier TestDoor Sensing Switch Secondary Interlock Switch TestMonitor Switch Test Primary Interlock System TestTouch Control Panel Assembly Test Before testingBlown Monitor Fuse Test KEY Unit Test Compu Defrost Test Relay TestFoil Pattern on the Printed Wiring Board Test Procedure Component Test LetterAH Sensor Test Testing Method for AH Sensor AND/OR Control UnitChecking the initial sensor cooking condition Water load cooking testSensor Dummy Resistor Circuit Checking Control UnitTouch Control Panel Assembly LSIIXA098DR Signal synchronized with commercial power source frequency Pin No Signal DescriptionKey strobe signal Signal coming from touch keyInternal clock oscillation frequency control input setting Power source voltage GND0VCommon data signal COM8 Common data signal COM7Common data signal COM10 Common data signal COM9Absolute Humidity Sensor Circuit Structure of Absolute Humidity SensorKRC243M Touch Control Panel ServicingOuter Case Removal Component Replacement and Adjustment ProcedureReinstallation Power Transformer RemovalHigh Voltage Rectifier and High Voltage Capacitor Removal Magnetron RemovalControl Panel Assembly Removal Positive Lock Connector NO-CASE Type RemovalOven Lamp and Lamp Socket Removal Turntable Motor RemovalInstallation AH Sensor ReplacementCooling FAN Motor Removal RemovalDoor Replacement After adjustment, check the followingRemoval After any service, make sure of the following ReinstallationInstallation Sealer FilmHigh Voltage Components Figure S-1. Pictorial DiagramFigure S-2. Power Unit Circuit OFF Cook CircuitSP1 VRB ZD1RY2 RY1 RY3 TTMElectric Parts Parts ListCabinet Parts Control Panel PartsDoor Parts HOW to Order Replacement PartsMiscellaneous 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

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