Sharp R-930AW Procedure Component Test Letter, Secondary Interlock Switch Test, Monitor Switch

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R-930AK

 

R-930AW

 

TEST PROCEDURES

PROCEDURE

COMPONENT TEST

LETTER

 

 

If the capacitor is open, no high voltage will be available to the magnetron. Disconnect input leads and

 

check for short or open between the terminals using an ohmmeter.

 

Checking with a high ohm scale, if the high voltage capacitor is normal, the meter will indicate continuity

 

for a short time and should indicate approximately 10 MΩ once the capacitor is charged. If the above is

 

not the case, check the capacitor with an ohmmeter to see if it is shorted between either of the terminals

 

and case. If it is shorted, replace the capacitor.

ESECONDARY INTERLOCK SWITCH TEST

Isolate the switch and connect the ohmmeter to the common (COM.) and normally open (NO) terminal of the switch. The meter should indicated 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.

FPRIMARY INTERLOCK SYSTEM TEST

DOOR SENSING SWITCH

Isolate the switch and connect the ohmmeter to the common (COM.) and normally open (NO) terminal of the switch, the meter should indicated 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.

PRIMARY INTERLOCK RELAY

Disconnect two (2) wire leads from the common (COM.) and normally open (NO) terminal of the primary Interlock relay (RY2). Check the state of the relay contacts using a ohmmeter. The relay contacts should be open. If the relay contacts are closed, replace the relay itself.

GMONITOR SWITCH

Disconnect the oven from power supply.

Before performing this test, make sure that the secondary interlock switch and the primary interlock relay are operating properly, according to the above Test Procedures. Disconnect the wire lead from the monitor switch (NC) 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 plate of the oven cavity with the door

opened (in this condition the plunger of

 

the monitor switch is pushed in), the

 

meter should indicate an open circuit.

N.C.

If improper operation is indicated, the

MONITOR SWITCH

switch may be defective. After testing

COM.

the monitor switch, re-connect the wire

SCREW DRIVER

lead to the monitor switch (NC) termi-

 

nal and check for continuity of monitor

 

circuit.

SECONDARY

 

INTERLOCK

OHMMETER

 

SWITCH

 

HBLOWN MONITOR FUSE

If the monitor fuse is blown when the door is opened, check the primary interlock relay, secondary interlock switch, door sensing switch and monitor switch according to the "TEST PROCEDURE" for those switches before replacing the blown monitor fuse.

CAUTION: BEFORE REPLACING A BLOWN MONITOR FUSE, TEST THE PRIMARY INTERLOCK RELAY, SECONDARY INTERLOCK SWITCH, DOOR SENSING SWITCH AND MONITOR SWITCH FOR PROPER OPERATION.

If the monitor fuse is blown by improper switch operation, the monitor fuse and switch must be replaced with "monitor fuse and switch assembly" part number FFS-BA012WRK0, even if the monitor switch operates normally. The monitor fuse and switch assembly is packed with 20 ampere fuse and switch.

ITEMPERATURE FUSE TEST

A continuity check across the temperature fuse terminals should indicate a closed circuit unless the temperature of the magnetron reaches approximately 302˚F (150˚C). If the temperature fuse has opened, replace the temperature fuse.

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Contents Convection Microwave Oven Table of Contents930AK 930AW Before Servicing Leakage test Microwave Measurement ProcedureRequirements Convection Microwave Oven Sharp PLAZA, Mahwah930AK / R-930AW ForewordGeneral Information SpecificationDescription Grounding InstructionsTouch Control Panel Oven DiagramOperation Power Level P-0 to P-90 CookingDescription of Operating Sequence OFF ConditionAutomatic MIX Cooking Condition Convection Cooking ConditionSensor Cooking Condition Preheating ConditionCompu BROIL/ Compu ROAST/ Compu Bake Fire Sensing Feature Microwave ModeCompu Defrost Cooking Cooking SequenceFigure O-1. Oven Schematic-OFF Condition Schematic DiagramFigure O-4. Oven Schematic-Convection Cooking Condition Description and Function of Components Heating Element Troubleshooting GuideConvection Cooking System Damper OPEN-CLOSE MechanismPossible Cause Defective Parts Test Procedure ProblemProcedure Component Test Letter Magnetron Assembly Test Test ProceduresPower Transformer Test High Voltage Rectifier TestSecondary Interlock Switch Test Procedure Component Test LetterMonitor Switch Temperature Fuse TestDamper Switch Test Test Procedures Component Test LetterChecking Temperature in the Convection Mode Thermal CUT-OUT TestKEY Unit Test Outer Case Switch TestTouch Control Panel Assembly Test Compu Defrost Test Weight 1ST Stage 2ND Stage 3RD Stage 4TH Stage Level TimeRelay Test AH Sensor Test Occurrence Cause or CorrectionChecking the initial sensor cooking condition Water load cooking testTesting Method for AH Sensor AND/OR Control Unit Test Procedures Letter Component TestChecking Control Unit R1,R2 22Ω ± R3 4.3kΩ ± 5% 1/4WThermistor Touch Control Panel AssemblyLSIIZA797DR Description of LSITOR Segment data signals Signal similar to P27Segment data signal Key strobe signalStructure of Absolute Humidity Sensor Absolute Humidity Sensor CircuitServicing Outer Case Switches Replacement Component Replacement and Adjustment ProcedurePower Transformer Removal Outer Case RemovalPositive Lock Connector NO-CASE Type Removal High Voltage Rectifier Assembly RemovalMagnetron Removal High Voltage Capacitor RemovalTurntable Motor Removal Damper Assembly RemovalOven Lamp and Lamp Socket Removal FAN Motor RemovalControl Unit and KEY Unit Control Panel Assembly and Control Unit RemovalAfter adjustment, check the following Door Replacement and AdjustmentDoor Adjustment After adjustment, make sure of the followingFigure C-5. Door Replacement and adjustment Door DisassemblyFigure S-1. Pictorial Diagram Control Panel CircuitDIP Control Panel Parts Electrical PartsCabinet Parts VSDTA123ES/-3 Oven PartsScrews Nuts and Washers Door PartsMiscellaneous Packing and Accessories HOW to Order Replacement PartsModel Number DescriptionOven Control Panel Parts Door Parts Miscellaneous 930AK 930AW
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R-930AW specifications

The Sharp R-930 series of microwave ovens, including the R-930AK, R-930AW, and R-930CS models, represent a blend of advanced technology and user-centric design. These units are well-suited for modern kitchens, offering convenience, versatility, and efficiency that meet the needs of busy households.

One of the standout features of the R-930 series is the powerful Inverter Technology. Unlike traditional microwaves that rely on pulsing power to cook food at lower settings, Inverter Technology delivers a steady stream of cooking power. This results in more even heating, improved texture, and better overall cooking results for delicate dishes like custards and sauces.

The spacious interior of these models provides ample room for cooking a variety of dishes simultaneously. The R-930 series is designed with a turntable that ensures uniform cooking by rotating food as it heats. Additionally, these microwaves often come with a variety of pre-programmed settings for popular dishes, making it easier for users to prepare meals with minimal effort. These presets take the guesswork out of cooking and help ensure consistent results every time.

The R-930AK and R-930AW models are particularly noted for their sleek and modern aesthetic, available in stylish black and white exteriors, respectively. Both models also feature user-friendly controls, which include a digital display and intuitive buttons, ensuring that even those new to microwave cooking can navigate settings with ease.

Another characteristic that distinguishes the R-930CS is its advanced sensor cooking technology. This feature monitors the cooking process and automatically adjusts power levels and cooking times to achieve optimal results. This takes the hassle out of determining how long to cook various foods, especially those that require specific attention to avoid overcooking or undercooking.

The Sharp R-930 series also emphasizes safety and convenience. Child safety locks are integrated into the design to prevent unauthorized use, making it a practical choice for families with young children. Moreover, the easy-clean interior ensures that spills and splatters can be quickly wiped away, maintaining hygiene and preserving the appliance's appearance.

In summary, the Sharp R-930AK, R-930AW, and R-930CS models are proficient microwave ovens equipped with innovative technologies and thoughtful features that cater to a variety of cooking needs. With their combination of inverter cooking technology, spacious interiors, sleek designs, and user-friendly controls, these models are ideal choices for anyone looking to enhance their culinary capabilities in a fast-paced world.