Sharp R-520LK, R-520LW service manual Oven Diagram, Touch Control Panel

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15 or 20 amp. fused electrical supply. It is recommended that a separate circuit serving only this appliance be provided. When installing this ap- pliance, observe all applicable codes and ordinances.

A short power-supply cord is provided to reduce risks of becoming entangled in or tripping over a longer cord.

Where a two-pronged wall-receptacle is encountered, it is the personal responsibility and obligation of the customer to contact a qualified electri- cian and have it replaced with a properly grounded three-pronged wall receptacle or have a grounding adapter properly grounded and polar- ized. If the extension cord must be used, it should be a 3-wire, 15 amp. or higher rated cord. Do not drape over a countertop or table where it can be pulled on by children or tripped over accidentally.

CAUTION: DO NOT UNDER ANY CIRCUMSTANCES CUT OR RE- MOVE THE ROUND GROUNDING PRONG FROM THIS PLUG.

R - 5 2 0 L K

R-520LW

Grounded

Receptacle Box

3-Pronged Plug

Grounding Pin

3-Pronged Receptacle

1.

One touch door open button.

 

Push to open door.

2.

Door latches.

 

The oven will not operate unless the

 

door is securely closed.

6

OVEN DIAGRAM

5

7

3.

Removable turntable support.

4.

Removable turntable.

9

11

 

The turntable will rotate clockwise or

 

counterclockwise.

5.

Oven lamp.

 

It will light when oven is operating or

 

door is opened.

6.

Oven door with see-through window.

7.

Ventilation openings. (Rear)

8.

Auto-Touch control panel.

9.

Time display:Digital display, 99 minutes

 

99 seconds.

2

10.Wave guide cover.

11.Power supply cord

8

10

1

4

3

TOUCH CONTROL PANEL

NOTE:

The directed features are disabled after one minute when the oven is not in use. These features are automatically enabled when the door is opened and closed or the STOP/ CLEAR pad is pressed.

 

POWER

 

 

 

 

 

 

CUSTOM HELP

 

LEVEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TIMER

 

 

 

 

STOP

 

 

 

START

 

CLOCK

 

 

CLEAR

 

 

MINUTE PLUS

 

HOT

 

 

SENSOR

 

 

KEEP WARM

 

WATER

 

 

REHEAT

 

 

PLUS

 

 

 

 

SENSOR COOK

 

 

 

 

BAKED

 

POPCORN

 

 

FRESH

 

POTATOES

 

VEGETABLES

 

 

 

 

 

 

 

GROUND

 

 

 

RICE

 

 

FISH

 

MEAT

 

 

 

 

SEAFOOD

 

 

 

 

 

 

 

 

FROZEN

 

CHICKEN

 

 

FROZEN

 

ENTREES

 

 

BREAST

VEGETABLES

 

 

 

 

 

REHEAT

 

 

 

FRESH ROLLS/

BEVERAGE

FROZEN ROLLS/

 

MUFFINS

 

 

 

MUFFINS

 

 

 

 

 

 

 

 

 

 

 

 

DEFROST

 

 

 

GROUND

STEAKS/

BONELESS

BONE-IN

MEAT

CHOPS

POULTRY

POULTRY

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Contents 520LW Table of ContentsBefore Servicing Dont Touch Before Servicing When the testing is completedRequirements Microwave Measurement ProcedureLeakage test Foreword Sharp PLAZA, MahwahMicrowave Ovens 520LK/R-520LWGrounding Instructions SpecificationGeneral Information DescriptionTouch Control Panel Oven DiagramOFF Condition Power Level P-0 to P-90 CookingOperation Description of Operating SequenceMicrowave Sensor Cooking ConditionClock Appears on Display SchematicDescription and Function of Components Troubleshooting Guide Procedure Component Test Letter Magnetron Assembly Test Test ProceduresTest Procedure ProblemMicrowave Output Power Procedure Component Test LetterPower Transformer Test High Voltage Capacitor Test Procedure Component Test Letter High Voltage Rectifier TestCavity Temperature Fuse Test Magnetron Temperature Fuse TestSecondary Interlock System Test Replace Temperature FusePrimary Interlock Switch Test Run the oven and check all functionsTouch Control Panel Assembly Test Procedure Component Test Letter Monitor Switch TestKEY Unit Test Figure of all digits flickerCompu Defrost Test Relay TestMenu 1ST Stage 2ND Stage 3RD Stage STEAKS/CHOPS Level Time Steps Occurrence Cause or Correction Primary on the PWB, this foil pattern acts as a fuseAH Sensor Test Testing Method for AH Sensor AND/OR Control UnitChecking the initial sensor cooking condition R1, R2 22Ω ± 1% 1/2W R3 4.3Ω ± 5% 1/4W R4 1MΩ ± 5% 1/4W Checking Control UnitSensor Dummy Resistor Circuit Synchronizing Signal Circuit Reset CircuitIndicator Circuit Power Source CircuitLSI Description of LSIKey strobe signal Signal similar to ANI3Internal clock oscillation frequency control input setting Power source voltageConverter power source voltage Converter power source voltage GND0VCommon data signal Detector Circuit of Absolute Humidity Sensor Circuit Absolute Humidity Sensor CircuitStructure of Absolute Humidity Sensor Operational Principle of Absolute Humidity SensorServicing Tools Other PrecautionsTouch Control Panel Servicing Servicing of Touch Control PanelOuter Case Removal Component Replacement and Adjustment ProcedureTo prevent an electric shock, take the following pre Magnetron Removal Power Transformer RemovalRe-install High Voltage Rectifier and High Voltage Capacitor RemovalOven Lamp and Lamp Socket Removal Positive Lock Connector NO-CASE Type RemovalControl Panel Assembly Removal Graphic Sheet and Membrane Switch ReplacementTurntable Motor Removal InstallationRear View InstallationCooling FAN Motor Removal RemovalAfter adjustment, check the following Door ReplacementAfter any service, make sure of the following RE-INSTALLSealer Film High Voltage Components DiagramCircuit Control Unit Figure S-5 . Printed Wiring Board of Power Unit Parts List Model Number HOW to Order Replacement PartsMiscellaneous SCREWS,NUTS and WashersOven and Cabinet Parts Control Panel Parts Door Parts Miscellaneous Packing and Accessories Copyright 2006 by Sharp Corporation ALL Rights Reserved

R-520LK, R-520LW specifications

The Sharp R-520LW and R-520LK are innovative microwave ovens that combine advanced technology with user-friendly features to enhance cooking experiences. Designed with modern kitchens in mind, these models embody efficiency, precision, and versatility.

One of the defining characteristics of both the R-520LW and R-520LK is their powerful 900-watt output, which allows for speedy cooking and reheating. This high wattage ensures that food is cooked evenly and retains its moisture, preventing the common issue of dry or unevenly heated meals. Furthermore, the inclusion of multiple cooking power levels provides users with flexibility, making it easy to select the ideal setting for various types of food.

Both models feature Sharp's signature Inverter Technology. Unlike traditional microwaves that use a turn-on and turn-off cycling method, inverter technology delivers a steady stream of cooking power. This results in more consistent heating, allowing delicate foods such as fish or custards to be cooked perfectly without overcooking the edges. This technology not only enhances the quality of cooked food but also improves the overall efficiency of the microwave.

The R-520LW and R-520LK come equipped with a variety of auto-cook settings that cater to different culinary needs. From popcorn to frozen vegetables, these pre-programmed settings allow users to prepare meals with just a touch of a button, making cooking uncomplicated for all skill levels. The large, user-friendly control panel features intuitive buttons and a digital display, ensuring effortless operation and visibility.

In terms of design, the R-520LW boasts a sleek white finish, while the R-520LK offers a modern black aesthetic. Both models are compact yet spacious, with a generous interior capacity that can accommodate a range of dish sizes. The turntable feature further enhances cooking efficiency by ensuring even cooking all around.

Cleaning and maintaining the R-520LW and R-520LK is a breeze, thanks to their easy-to-wipe surfaces and the interior's cavity that can be easily accessed. The durable construction of these microwaves means they are designed to withstand the rigors of daily use.

In summary, the Sharp R-520LW and R-520LK microwave ovens stand out with their advanced features, such as inverter technology and pre-programmed cooking settings, making them excellent choices for anyone looking to streamline their kitchen tasks. Their stylish designs and user-friendly interfaces further enhance their appeal, making them valuable additions to any modern home.