Sharp R-930AW Occurrence Cause or Correction, AH Sensor Test, Water load cooking test

Page 21

 

 

 

 

R-930AK

 

 

 

 

R-930AW

 

 

TEST PROCEDURES

PROCEDURE

COMPONENT TEST

LETTER

 

 

 

 

Problem: POWER ON, indicator does not light up.

 

 

 

 

 

 

 

 

 

STEPS

OCCURRENCE

 

CAUSE OR CORRECTION

 

 

1

The rated voltage is not applied to POWER

 

Check supply voltage and oven power cord.

 

 

 

terminal of CPU connector (CN-A).

 

 

 

 

 

 

 

 

 

 

2

The rated voltage is applied to primary side

 

Power transformer or secondary circuit defective.

 

 

 

of power transformer.

 

Check and repair.

 

 

 

 

 

 

 

 

3

Only pattern at "a" is broken.

 

*Insert jumper wire J1 and solder.

 

 

 

 

 

 

 

 

4

Pattern at "a" and "b" are broken.

 

*Insert the coil RCILF2003YAZZ between "c" and "d".

 

 

 

 

 

 

 

NOTE: *At the time of making these repairs, make a visual inspection of the varistor. Check for burned damage and examine the transformer with an ohmmeter for the presence of layer short-circuit (check the primary coil resist- ance which is approximately 175Ω ± 10%). If any abnormal condition is detected, replace the defective parts.

MCONV

3

 

 

d

VRS1

P

FAN

5

 

 

b

 

 

M

 

 

 

 

 

POWER

79

 

 

 

a

3

CN - A

26

c

T1

(J1)

VAH SENSOR TEST

Checking the initial sensor cooking condition

(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".

(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 vapour given of by the spray and turn off before food is properly cooked.

(8)After 30 minutes if the sensor has not detected the vapour of the food, ERROR will appear and the oven will shut off.

Water load cooking test

Make sure the oven has been plugged in at least five 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 SENSOR COOK pad and number pad 1. Now, the oven is in the sensor cooking condition and "BAKED POTATO" will appear in the display.

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

When the AH sensor is defective (open or short), Error will appear in the display after 16 seconds cleaning time.

If ERROR appears check sensor wire connections and/or AH sensor.

19

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Contents Convection Microwave Oven Table of Contents930AK 930AW Before Servicing Microwave Measurement Procedure RequirementsLeakage test 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 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 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 Electrical Parts Cabinet PartsControl Panel Parts VSDTA123ES/-3 Oven PartsDoor Parts MiscellaneousScrews Nuts and Washers 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.