Sharp R-2397 service manual Power Supply Cord Replacement, Re-install

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R-2397

POWER SUPPLY CORD REPLACEMENT

1.CARRY OUT 3D CHECKS

2.Release the cord bushing from the rear cabinet.

3.Disconnect the brown and blue wires of the power supply cord from the noise filter.

4.Loosen the single (1) screw holding the earth angle and earth wire of power supply cord.

5.Remove the power supply cord.

CAUTION: DO NOT ALLOW THE WIRE LEADS OF THE POWER SUPPLY CORD TO COME NEAR THE HIGH VOLTAGE TRANS- FORMER. BECAUSE THE HIGH VOLT- AGE TRANSFORMER BECOMES HOT.

Re-install

1.Insert the power supply cord into the cord bushing.

2.Connect the brown and blue wires of power supply cord into the terminals of noise filter, referring to pictorial diagram.

3.Insert the green/yellow wire of power supply cord into the earth angle, and tight the screw holding the earth angle.

4.Re-install the cord bushing to the rear cabinet.

5.Re-install the rear cabinet to oven cavity and the bottom plate with the eleven (11) screws and two (2) washers.

6.CARRY OUT 4R CHECKS.

BLK

Noise filter unit

 

 

WHT

 

 

 

Blue wire

 

 

Brown wire Power

 

 

supply

L

 

cord

Screw

 

 

 

 

Rear

Cord

 

bushing

 

cabinet

 

 

Green/Yellow

 

wire

 

 

Figure C-3. Power supply cord replacement

1ST LATCH, 2ND LATCH, 3RD LATCH, MONITOR, AND STOP SWITCHES REMOVAL

1.CARRY OUT 3D CHECKS.

2.Remove the control panel from the oven cavity refer- ring to “CONTROL PANEL REMOVAL”.

3.Remove the two (2) screws holding the latch hook to the oven cavity.

4.Open the door and pull the latch hook out of the oven cavity.

5.For 1st latch, 2nd latch or Monitor switch removal 5-1. Disconnect the wire leads from the switch.

5-2. Push the retaining tabs outward slightly and then pull the switch forwards and remove it from the

latch hook.

6.For 1st latch and stop switches removal

6-1. Disconnect the wire leads from the 1st latch and stop switches.

6-2. Remove the single (1) screw and nut holding the 1st latch and stop switches to the latch hook.

CAUTION: WHEN THE 1ST LATCH SWITCH AND 2ND. LATCH SWITCH ARE INSTALLED, THE TWO (2) TABS OF THE LATCH HOOK SHOULD BE BROKEN.

1ST, 2ND, 3RD LATCH SWITCH, STOP SWITCH AND MONITOR SWITCH ADJUSTMENT

In case 1st latch switch, 2nd latch, stop switch, 3rd latch switch and monitor switch do not operate properly due to a mis-adjustment, the following adjustment should be made.

circuit when the door is opened.

2.Re-install outer case and check for microwave leakage around the door with an approved microwave survey

1.Loosen the two (2) screws holding the latch hook.

2.With the door closed, adjust the latch hook by moving it back and forward, or up and down. In and out play of the door allowed by the latch hook should be less than 0.5mm. The vertical position of the latch hook should be placed where the stop switch and 1st, 2nd, 3rd latch switches have activated with the door closed.

The horizontal position of the latch hook should be placed where the monitor switch has activated with the door closed.

3.Secure the screws with washers firmly.

4.Make sure of the 1st, 2nd, 3rd latch switches, stop switch, and monitor switch operation. If those switches have not activated with the door closed, loose two (2) screws holding latch hook and adjust the latch hook position.

After adjustment, make sure of the following:

1. The stop switch and 1st, 2nd, 3rd latch switches interrupt

the circuit before the door open when the door release

lever is pulled, and then and monitor switch close the

Door release lever

Joint lever

Latch lever

Latch head

Latch head

Monitor switch

Latch hook

2nd. latch switch

1st. latch switch

Stop switch

3rd. latch switch

meter. (Refer to Microwave Measurement Procedure.)

Figure C-4 Latch Switch Adjustments

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Contents Commercial Microwave Oven Table of Contents2397 Commercial Sharp Corporation OSAKA, Japan2397 General Important InformationProduct Description SpecificationGeneral Information DescriptionDisplay and Indicators Installation InformationAppearance View Operating KeysOFF Condition Operation SequenceMicrowave Cooking Condition Microwave Variable CookingFunction of Important Components Exhaust Thermistor Asymmetric RectifierIntake Thermistor Magnetron ThermistorServicing Troubleshooting GuideRemember to Check 3D Remember to Check 4RPlugged into wall outlet Test Procedure Possible Cause Defective PartsTemperature of Intake Thermistor is High Procedure Component Test Letter Magnetron Test Test ProceduresMicrowave Output Power IEC-705-1988 Around 20 C Power supply Voltage Rated voltageHigh Voltage Transformer Test Procedure Letter Component TestCarry OUT 3D Checks Carry OUT 4R ChecksSwitch Test Procedure Component Test LetterHigh Voltage Capacitor Test Carry OUT 3D Checks Weak Point A018Thermal CUT-OUT Test Carry OUT 3D Checks Fuse F6.3A TestTable Thermal Cut-out Test Monitor Resistor Test Carry OUT 3D ChecksExhaust Thermistor Test Procedure Component Test Letter Magnetron Thermistor TestIntake Thermistor Test Motor Winding TestKEY Unit Test Touch Control Panel Assembly TestMin Cx ± 20% Cy ± 20% 5mH To determine if the control unit or key pad is at fault Test Procedures ContdRelay Test CircuityPower Sync Signal Generating Circuit Power Supply CircuitStop Switch Circuit Exhaust Air Temperature Detecting CircuitDescription of LSI LSIIZA646DR Internal clock oscillation frequency setting input Pin No Signal DescriptionPower source voltage Signal coming from touch keySound Voltage level control terminal Servicing Other PrecautionsShapes of Electronic Components Servicing of Touch Control PanelPractice 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 BuzzerOuter Case Removal Component Replacement and Adjustment ProcedureHigh Voltage Components Removal To remove the components, proceed as followsHigh Voltage Transformer Removal Magnetron RemovalBlower Motor Removal Stirrer Motor Upper RemovalHOW to Release the Positive Lock Connector Control Panel Assembly and Control Unit RemovalControl Panel Assembly Removal ProcedureAfter adjustment, make sure of the following Power Supply Cord ReplacementRe-install Door Replacement Door Replacement and AdjustmentDoor Adjustment Choke Cover RemovalPreparation for Testing Service InformationMicrowave Measurement RequirementFigure O-1. Oven SChematic-OFF Condition High Voltage Components C d e CircuitFigure S-3. Printed Wiring Board Parts marked * are used in voltage more than Parts ListElectric Parts Cabinet PartsVCEAB31HW104M Door Parts Oven PartsSCRE, Nuts and Washers MiscellaneousModel Number HOW to Order Replacement PartsREF. no DescriptionOven 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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