Sharp R-1505 Primary Interlock Switch Test, Secondary Interlock System Test Door Sensing Switch

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R-1500

R-1501

R-1505

R-1506

TEST PROCEDURES

PROCEDURE

LETTER

COMPONENT TEST

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.

CAUTION: IF THE THERMAL CUT-OUT OR TEMPERATURE FUSE INDICATES AN OPEN CIRCUIT AT ROOM TEMPERATURE, REPLACE THERMAL CUT-OUT OR TEMPERATURE FUSE.

FPRIMARY INTERLOCK SWITCH 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.Isolate the switch and connect the ohmmeter to the common (COM.) and normally open (NO) terminal of the switch. The meter should indicate an open circuit with the door open and a closed circuit with the door closed. If improper operation is indicated, replace the secondary interlock switch.

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.

GSECONDARY INTERLOCK SYSTEM TEST DOOR SENSING SWITCH

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.Isolate the switch and connect the ohmmeter to the common (COM.) and normally open (NO) terminal of the switch. The meter should indicate an open circuit with the door open and a closed circuit with the door closed. If improper operation is indicated, replace the door sensing switch.

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.

NOTE: If the door sensing switch contacts fail in the open position and the door is closed, the cooling fan motor, stirrer motor and oven light will be activated by RY1.

SECONDARY INTERLOCK RELAY (RY2)

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 two (2) wire leads from the male tab terminals of the Secondary Interlock Relay. Check the state of the relay contacts using a ohmmeter. The relay contacts should be open. If the relay contacts are closed, replace the circuit board entirely or the relay itself.

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.

HMONITOR SWITCH 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.Before performing this test, make sure that the primary interlock switch and the secondary interlock relay are operating properly, according to the above Switch and Interlock system Test Procedures. Disconnect the wire lead from the monitor switch (COM) terminal. Check the monitor switch operation by using the ohmmeter as follows. When the door is open, the meter should indicate a closed circuit. When the monitor switch actuator is pushed by a screw driver through the lower latch hole on the front

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Contents 1506 Table of ContentsBefore Servicing Dont Touch Before Servicing When the testing is completedLeakage test Microwave Measurement ProcedureRequirements Over the Range Microwave Oven Sharp PLAZA, Mahwah1500/ R-1501/ R-1505/ R-1506 ForewordGeneral Information Product SpecificationDescription Grounding InstructionsOven Diagram Light HI/ LO FAN HI/ LO Stop Clear Start Minute Plus Control PanelLevel Operation Power Level P-0 to P-90 CookingDescription of Operating Sequence OFF ConditionVertical Venting Ventilation Methods HOT AIR ExhaustAIR Flow Horizontal VentingFigure O-1. Oven Schematic-Off Condition Description and Function of Components Hood Lamp Troubleshooting GuideHood FAN Motor Possible Case Defective Parts Test Procedure ProblemProcedure Letter Component Test Magnetron Assembly Test Test ProceduresMicrowave Output Power Power Transformer TestMagnetron Temperature Fuse Test Procedure Letter Component TestHigh Voltage Rectifier Test High Voltage Capacitor TestSecondary Interlock System Test Door Sensing Switch Primary Interlock Switch TestMonitor Switch Test Secondary Interlock Relay RY2Blown Monitor Fuse Test Procedure Component Test LetterHood Thermal CUT-OUT Test Hood FAN Motor TestWHT 3 Touch Control Panel Assembly TestBefore testing KEY Unit Test Foil Pattern on the Printed Wiring Board Test Procedure Letter Component Test Relay TestDefrost Center Test 1ST Stage 2ND StageSteps Occurrence Cause or Correction QKITPB035LSI Touch Control Panel AssemblyDescription of LSI Signal synchronized with commercial power source frequency OUT Oven lamp, fan motor and turntable motor driving signalInternal clock oscillation frequency input setting OUT Key strobe signalHood lamp driving signal Key strobe signalHood motor high / low driving signal Hood motor driving signalServicing Other PrecautionsShapes of Electronic Components Servicing of Touch Control PanelHood Exhaust Louver Removal Component Replacement and Adjustment ProcedureRe-install Power Transformer RemovalPictorial Diagram Outer Case RemovalHigh Voltage Rectifier and High Voltage Capacitor Removal Magnetron RemovalHood FAN Thermal CUT-OUT Removal Thermal CUT-OUT Cavity RemovalCooling FAN Motor Removal Temperature Fuse Magnetron RemovalControl Panel ASSEMBLY, Control Unit and KEY Unit Removal Positive Lock Connector NO-CASE Type RemovalPositive lock connector Turntable Motor and Food Lamp Sockets RemovalControl Unit and KEY Unit Removal Key unit locationAfter adjustment, check the following Door ReplacementDoor Assembly Removal Door Assembly RE-INSTALLReplacement Door DisassemblyDoor Frame Assembly Choke CoverHigh Voltage Components Control UnitFigure S-2. Power Unit Circuit Unit CircuitDIP Parts marked * are used in voltage more than Parts ListElectric Parts Cabinet PartsMiscellaneous Oven PartsDoor Parts Packing and Accessories HOW to Order Replacement PartsSCREWS,NUTS and Washers Model NumberOven and Cabinet Parts Control Panel Parts Door Parts Miscellaneous Copyright 2001 by Sharp Corporation ALL Rights Reserved
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R-1506, R-1501, R-1505, R-1500 specifications

The Sharp R-1500, R-1505, R-1501, and R-1506 are part of Sharp's extensive line of microwave ovens, showcasing advanced cooking technologies and user-friendly features that cater to the modern kitchen. These models are designed to provide convenience and efficiency while delivering consistent cooking results.

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