Sharp R-2397 Sharp Corporation OSAKA, Japan, Commercial, General Important Information

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SERVICE MANUAL

COMMERCIAL

R-2397

GENERAL IMPORTANT INFORMATION

This Manual has been prepared to provide Sharp Corp. Service engineers with Operation and Service Information.

It is recommended that service engineers carefully study the entire text of this manual, so they will be qualified to render satisfactory customer service.

CAUTION

MICROWAVE RADIATION

DO NOT BECOME EXPOSED TO RADIATION FROM THE MICROWAVE GENERATOR OR OTHER PARTS CONDUCTING MICROWAVE ENERGY.

Service engineers should not be exposed to the microwave energy which may radiate from the magnetron or other microwave generating devices if it is improperly used or connected. All input and output microwave connections, waveguides, flanges and gaskets must be secured. Never operate the device without a microwave energy absorbing load attached. Never look into an open waveguide or antenna while the device is energized.

WARNING

Never operate the oven until the following points are ensured.

(A)The door is tightly closed.

(B)The door brackets and hinges are not defective.

(C)The door packing is not damaged.

(D)The door is not deformed or warped.

(E)There is not any other visible damage with the oven.

Servicing and repair work must be carried out only by trained service engineers.

All the parts marked "*" on parts list are used at voltages more than 250V.

Removal of the outer wrap gives access to potentials above 250V.

All the parts marked "Δ" on parts list may cause undue microwave exposure, by themselves, or when they are dam- aged, loosened or removed.

SHARP CORPORATION

OSAKA, JAPAN

R-2397

PRODUCT SPECIFICATIONS

GENERAL INFORMATION

APPEARANCE VIEW

OPERATING SEQUENCE

FUNCTION OF IMPORTANT COMPONENTS

SERVICING AND TROUBLESHOOTING CHART

TEST PROCEDURE

TOUCH CONTROL PANEL ASSEMBLY

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

MICROWAVE MEASUREMENT

WIRING DIAGRAM

PARTS LIST

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Contents Commercial Microwave Oven Table of Contents2397 General Important Information Sharp Corporation OSAKA, JapanCommercial 2397Description SpecificationProduct Description General InformationOperating Keys Installation InformationDisplay and Indicators Appearance ViewMicrowave Variable Cooking Operation SequenceOFF Condition Microwave Cooking ConditionFunction of Important Components Magnetron Thermistor Asymmetric RectifierExhaust Thermistor Intake ThermistorRemember to Check 4R Troubleshooting GuideServicing Remember to Check 3DPlugged into wall outlet Test Procedure Possible Cause Defective PartsTemperature of Intake Thermistor is High Around 20 C Power supply Voltage Rated voltage Test ProceduresProcedure Component Test Letter Magnetron Test Microwave Output Power IEC-705-1988Carry OUT 4R Checks Procedure Letter Component TestHigh Voltage Transformer Test Carry OUT 3D ChecksWeak Point A018 Procedure Component Test LetterSwitch Test High Voltage Capacitor Test Carry OUT 3D ChecksMonitor Resistor Test Carry OUT 3D Checks Fuse F6.3A TestThermal CUT-OUT Test Carry OUT 3D Checks Table Thermal Cut-out TestMotor Winding Test Procedure Component Test Letter Magnetron Thermistor TestExhaust Thermistor Test Intake Thermistor TestTouch Control Panel Assembly Test Min Cx ± 20% Cy ± 20% 5mHKEY Unit Test Circuity Test Procedures ContdTo determine if the control unit or key pad is at fault Relay TestExhaust Air Temperature Detecting Circuit Power Supply CircuitPower Sync Signal Generating Circuit Stop Switch CircuitDescription of LSI LSIIZA646DR Signal coming from touch key Pin No Signal DescriptionInternal clock oscillation frequency setting input Power source voltageSound Voltage level control terminal Servicing of Touch Control Panel Other PrecautionsServicing Shapes of Electronic ComponentsPractice for checking total service counts eg 234,567 Counts Procedure for Entering to IC-2Other Checking and Clearing PRO Cedure To check the contents of defrost Flicker / 0.1 sec BuzzerTo remove the components, proceed as follows Component Replacement and Adjustment ProcedureOuter Case Removal High Voltage Components RemovalStirrer Motor Upper Removal Magnetron RemovalHigh Voltage Transformer Removal Blower Motor RemovalProcedure Control Panel Assembly and Control Unit RemovalHOW to Release the Positive Lock Connector Control Panel Assembly RemovalPower Supply Cord Replacement Re-installAfter adjustment, make sure of the following Choke Cover Removal Door Replacement and AdjustmentDoor Replacement Door AdjustmentRequirement Service InformationPreparation for Testing Microwave MeasurementFigure O-1. Oven SChematic-OFF Condition High Voltage Components C d e CircuitFigure S-3. Printed Wiring Board Cabinet Parts Parts ListParts marked * are used in voltage more than Electric PartsVCEAB31HW104M Door Parts Oven PartsSCRE, Nuts and Washers MiscellaneousDescription HOW to Order Replacement PartsModel Number REF. noOven and Cabinet Parts Control Panel Parts Door Parts Not replaceable items 2397

R-2397 specifications

The Sharp R-2397 is a high-performance microwave oven that combines advanced technology with user-friendly features, making it a popular choice for modern kitchens. This model stands out due to its sleek design and efficient functionality, catering to both cooking enthusiasts and busy households alike.

One of the most notable features of the Sharp R-2397 is its powerful microwave cooking capabilities. With a wattage rating of 900 watts, it ensures that food is cooked evenly and quickly, allowing users to prepare meals in a fraction of the time compared to conventional ovens. The unit also offers multiple power levels, enabling precise cooking adjustments for various types of food, from defrosting to reheating and everything in between.

Another key characteristic of the R-2397 is its spacious interior. With a generous capacity of 23 liters, this microwave can accommodate larger dishes, making it suitable for families or individuals who enjoy hosting gatherings. The turntable feature promotes even cooking by rotating food continuously, ensuring that every inch is heated uniformly.

Additionally, the Sharp R-2397 is equipped with a range of convenient presets and auto-cook functions. These pre-programmed settings allow users to optimize cooking times for common dishes, such as popcorn, vegetables, and frozen meals, simplifying meal preparation and enhancing user experience. The intuitive control panel is designed to be user-friendly, ensuring that anyone can operate the microwave with ease.

Safety is also a significant consideration in the design of the Sharp R-2397. The unit comes with a child lock function, preventing accidental operation and ensuring that the oven is used safely in households with young children. This feature adds peace of mind for parents while using the appliance in their daily routines.

Moreover, the R-2397 incorporates a modern aesthetic that can fit into various kitchen styles. Its polished exterior and compact design make it both attractive and practical, with the added advantage of easy cleaning and maintenance.

In summary, the Sharp R-2397 is a versatile microwave oven that offers a blend of power, efficiency, and user-centric features. With its high wattage, spacious interior, smart presets, and safety measures, it is an excellent addition to any kitchen, catering to everyday cooking needs and helping to simplify meal times. Whether reheating leftovers or cooking a new recipe, the Sharp R-2397 sets itself apart as a reliable kitchen companion.
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