Sharp R-930AW service manual Magnetron Removal, High Voltage Rectifier Assembly Removal

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R-930AK

R-930AW

transformer.

5.Disconnect wire leads from the transformer.

6.Remove two (2) screws holding the transformer to the base cabinet.

Re-install

1.Rest the transformer on the base cabinet with its primary terminals toward rear cabinet.

2.Insert the two edges of the transformer into two metal tabs of the base cabinet.

3.Make sure the transformer is mounted correctly to the corners underneath those tabs.

4.After re-installing the transformer, secure the transformer

with two screws to the base cabinet, one is with outer tooth washer and the other is without outer-tooth washer.

5.Re-connect the wire leads (primary and high voltage) and high voltage lead to the transformer and filament leads of transformer to the magnetron and capacitor, referring to the “Pictorial Diagram”.

6.Re-install the outer case and check that the oven is operating properly.

NOTE HOT (ORANGE) WIRE MUST BE CONNECTED TO THE POWER TRANSFORMER TERMINAL NEAREST TO THE TRANSFORMER MOUNTING SCREW.

MAGNETRON REMOVAL

1.Disconnect oven from power supply and remove outer case.

2.Discharge the high voltage capacitor. Disconnect filament lead of transformer from magnetron. Disconnect high voltage wire lead from magnetron.

3.Carefully remove four (4) mounting screws hold the magnetron to waveguide, when removing the screws holding the magnetron to prevent it from falling.

4.Remove the magnetron from the unit with care so the magnetron tube should not hit by any metal object around the tube.

CAUTION: WHEN REPLACING THE MAGNETRON, BE SURE THE R.F. GASKET IS IN PLACE AND THE MAGNETRON MOUNTING SCREWS ARE TIGHTENED SECURELY.

HIGH VOLTAGE RECTIFIER ASSEMBLY REMOVAL

1.Disconnect oven from power supply and remove outer case.

2.Discharge the high voltage capacitor.

3.Remove one (1) screw holding the rectifier assembly to the capacitor holder.

4.Disconnect the rectifier assembly from the capacitor and

magnetron.

CAUTION: WHEN REPLACING THE SILICON RECTIFIER ASSEMBLY, THE GROUND SIDE TERMINAL MUST BE SECURED FIRMLY WITH A GROUNDING SCREW.

HIGH VOLTAGE CAPACITOR REMOVAL

1.Disconnect oven from power supply and remove outer case.

2.Discharge the high voltage capacitor.

3.Disconnect the high voltage wire leads and rectifier assembly from high voltage capacitor and magnetron.

4.Disconnect filament lead of transformer from high voltage capacitor.

5.Disconnect high voltage wire lead of capacitor from transformer.

6.Remove one (1) screw and washer holding the rectifier from the capacitor holder.

7.Remove one (1) screw holding the capacitor holder to the rear cabinet.

8.Remove the capacitor from the holder.

POSITIVE LOCK® CONNECTOR (NO-CASE TYPE) REMOVAL

Positive lock® connector

Push the lever of positive lock® connector. Pull down on the positive lock® connector.

Lever

CAUTION: WHEN YOU CONNECTING THE POSITIVE

LOCK® CONNECTORS TO THE TERMINALS,

INSTALL THE POSITIVE LOCK® SO THAT

THE LEVER FACES YOU.

Figure C-2. Positive lock® connector

Terminal

1 Push

2

Pull down

CONVECTION MOTOR REMOVAL

1.Disconnect oven from power supply and remove outer case.

2.Discharge the high voltage capacitor.

3.Disconnect wire leads from the convection motor. Remove the convection fan belt.

4.Remove two (2) screws holding the convection motor mounting angle to the heater duct and base cabinet.

5.Take out the convection motor assembly from the unit. The convection motor assembly is now free.

6.Remove two (2) screws and nuts holding the motor to mounting angle.

7.Remove pulley (M) from the motor shaft. Convection motor is now free.

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Contents Table of Contents Convection Microwave Oven930AK 930AW Before Servicing Microwave Measurement Procedure RequirementsLeakage test 930AK / R-930AW Sharp PLAZA, MahwahConvection Microwave Oven ForewordDescription SpecificationGeneral Information Grounding InstructionsOven Diagram Touch Control PanelDescription of Operating Sequence Power Level P-0 to P-90 CookingOperation OFF ConditionSensor Cooking Condition Convection Cooking ConditionAutomatic MIX Cooking Condition Preheating ConditionCompu Defrost Cooking Fire Sensing Feature Microwave ModeCompu BROIL/ Compu ROAST/ Compu Bake Cooking SequenceSchematic Diagram Figure O-1. Oven Schematic-OFF ConditionFigure O-4. Oven Schematic-Convection Cooking Condition Description and Function of Components Convection Cooking System Troubleshooting GuideHeating Element Damper OPEN-CLOSE MechanismTest Procedure Problem Possible Cause Defective PartsPower Transformer Test Test ProceduresProcedure Component Test Letter Magnetron Assembly Test High Voltage Rectifier TestMonitor Switch Procedure Component Test LetterSecondary Interlock Switch Test Temperature Fuse TestChecking Temperature in the Convection Mode Test Procedures Component Test LetterDamper Switch Test Thermal CUT-OUT TestOuter Case Switch Test Touch Control Panel Assembly TestKEY Unit Test Weight 1ST Stage 2ND Stage 3RD Stage 4TH Stage Level Time Relay TestCompu Defrost Test Checking the initial sensor cooking condition Occurrence Cause or CorrectionAH Sensor Test Water load cooking testChecking Control Unit Test Procedures Letter Component TestTesting Method for AH Sensor AND/OR Control Unit R1,R2 22Ω ± R3 4.3kΩ ± 5% 1/4WTouch Control Panel Assembly ThermistorDescription of LSI LSIIZA797DRTOR Segment data signal Signal similar to P27Segment data signals Key strobe signalAbsolute Humidity Sensor Circuit Structure of Absolute Humidity SensorServicing Power Transformer Removal Component Replacement and Adjustment ProcedureOuter Case Switches Replacement Outer Case RemovalMagnetron Removal High Voltage Rectifier Assembly RemovalPositive Lock Connector NO-CASE Type Removal High Voltage Capacitor RemovalOven Lamp and Lamp Socket Removal Damper Assembly RemovalTurntable Motor Removal FAN Motor RemovalControl Panel Assembly and Control Unit Removal Control Unit and KEY UnitDoor Adjustment Door Replacement and AdjustmentAfter adjustment, check the following After adjustment, make sure of the followingDoor Disassembly Figure C-5. Door Replacement and adjustmentFigure S-1. Pictorial Diagram Circuit Control PanelDIP Electrical Parts Cabinet PartsControl Panel Parts Oven Parts VSDTA123ES/-3Door Parts MiscellaneousScrews Nuts and Washers Model Number HOW to Order Replacement PartsPacking and Accessories 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.
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