Sharp R-480J Oven Lamp and Lamp Socket Removal, Control Panel Assembly Removal, Installation

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R-480J

OVEN LAMP AND LAMP SOCKET REMOVAL

1.CARRY OUT 3D CHECKS.

2.Remove one (1) screw holding the chassis support to the magnetron and magnetron air duct.

3.Remove one (1) screw holding the chassis support to the oven cavity front plate.

4.Remove the chassis support from the oven cavity.

5.Release the magnetron air duct from the oven cavity.

6.Remove the oven lamp socket from the magnetron air duct by bending the small tab of magnetron air duct.

7.Pull the wire leads from the oven lamp socket by pushing the terminal hole of the oven lamp socket with the small flat type screw driver.

8.Remove the oven lamp from the oven lamp socket by turning the oven lamp.

9. Now, the oven lamp and lamp socket are free.

Oven lamp socket

Terminal

Wire lead

Terminal hole

Flat type small screw driver

Figure C-2. Oven lamp socket

CONTROL PANEL ASSEMBLY REMOVAL

1.CARRY OUT 3D CHECKS.

2.Disconnect wire leads from panel components.

3.Release one (1) nail holding the control panel assembly to the oven flange.

4.Remove control panel assembly and slide upward.

5.Now, the control panel assembly is free.

NOTE: 1. Before attaching a new key unit, remove remaining adhesive on the control panel frame surfaces completely with a soft cloth soaked in alcohol.

2.When attaching the key unit to the control panel frame, adjust the upper edge and right edge of the key unit to the correct position of control panel frame.

3.Stick the key unit firmly to the control panel frame by rubbing with soft cloth not to scratch.

CPU UNIT AND POWER UNIT

NOTE: Handle the CPU unit carefully so that the ribbon cable does not come off. Because the ribbon cable is sticked on the LCD and the printed wiring board only by heated paste.

Ribbon cable

 

Liquid Crystal Display (LCD)

Printed wiring board of CPU unit

Figure C-3 CPU unit

COOLING FAN MOTOR REMOVAL

1.CARRY OUT 3D CHECKS.

2.Disconnect the wire leads from the fan motor.

3.Remove the fan duct from the oven cavity.

4.Remove two (2) screws holding the fan motor to the back plate of the oven cavity.

5.Remove the fan blade from the fan motor shaft according to the following procedure.

1)Hold the edge of the rotor of the fan motor by using a pair of grove joint pliers.

CAUTION:

*Make sure that any pieces do not enter the gap between the rotor and the stator of the fan motor because the rotor is easily shaven by pliers and metal pieces may be produced.

*Do not touch the pliers to the coil of the fan motor because the coil may be cut or injured.

*Do not disfigure the bracket by touching with the pliers.

2)Remove the fan blade from the shaft of the fan motor by pulling and rotating the fan blade with your hand.

3)Now, the fan blade will be free.

CAUTION:

*Do not use this removed fan blade again because the hole (for shaft) of it may become bigger than a standard one.

6.Now, the fan motor is free.

INSTALLATION

1.Install the fan blade to the fan motor shaft according to the following procedure.

1)Hold the center of the bracket which supports the shaft of the fan motor on the flat table.

2)Apply the screw lock tight into the hole (for shaft) of the fan blade.

3)Install the fan blade to the shaft of fan motor by pushing the fan blade with a small, light weight, ball peen hammer or rubber mallet.

CAUTION:

*Do not hit the fan blade strongly when installed because the bracket may be disfigured.

*Make sure that the fan blade rotates smooth after installation.

*Make sure that the axis of the shaft is not slanted.

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Contents Table of Contents Microwave Oven Model R-480J480J 480J Sharp Corporation OSAKA, JapanMicrowave Oven General Important InformationDescription Product SpecificationsGeneral Information This Appliance Must be EarthedAppearance View Touch Control PanelMicrowave Cooking Condition Operation SequenceOFF Condition Variable CookingSensor Instant Reheat Power Output ReductionCooking Sequence Function of Important Components Remember to Check 3D Troubleshooting GuideServicing Remember to Check 4RTest Procedure Possible Cause Defective Parts ProblemMicrowave Output Power 1 litre water load Test ProceduresProcedure Component Test Letter Magnetron Test High Voltage Rectifier Assembly Test Test Procedures Letter Component TestPower Transformer Test High Voltage Capacitor TestNoise Filter Test Carry OUT 3D Checks Procedure Component Test LetterSwitch Test Thermal CUT-OUT TestHigh Voltage Fuse Test Touch Control Panel Assembly TestBlown Fuse F10A Carry OUT 3D Checks KEY Unit Test Relay TestAH Sensor Test Carry OUT 3D Checks Steps Occurrence Cause or CorrectionOmif Checking the initial sensor cooking conditionChecking Control Unit Test Procedures LetterTesting Method for AH Sensor AND/OR Control Unit Sensor Dummy Resistor CircuitPower Source Circuit Reset CircuitIndicator Circuit Synchronizing Signal CircuitLSI Signal similar to P17 Pin No Signal DescriptionSignal coming from touch key Power source voltage GND0VCommon data signal COM6 Common data signal COM8Common data signal COM7 Common data signal COM5Absolute Humidity Sensor Circuit Structure of Absolute Humidity SensorShapes of Electronic Components Other PrecautionsTouch Control Panel Servicing Servicing of Touch Control PanelOuter Case Removal Component Replacement and Adjustment ProcedurePower Transformer Removal Magnetron Removal Positive Lock Connector NO-CASE Type RemovalHOW to RE-INSTALL the Turntable Motor Cover Turntable Motor RemovalInstallation Control Panel Assembly RemovalCPU Unit and Power Unit Oven Lamp and Lamp Socket RemovalRear View Power Supply Cord ReplacementAfter adjustment, check the following Side ViewRemoval Door ReplacementRE-INSTALL View back side of door frameSealer Film After any service, make sure of the followingInstallation Requirement Preparation for TestingMicrowave Measurement Holaday HI Simpson 380MFigure O-1. Oven Schematic-OFF Condition Figure S-1. Pictorial Diagram High Voltage ComponentsFigure S-2. Power unitl Circuit Unit FigureS3.CPUCN a CN D D10 CN CZD1 SP1 VRB RY2 RY1 RY3 TTMParts List SCREWS, Nuts and Washers Packing and AccessoriesMiscellaneous Not replaceable items84-21 Control Panel Parts Door Parts Miscellaneous Copyright 2004 by Sharp Corporation ALL Rights Reserved

R-480J specifications

The Sharp R-480J is a notable microwave oven that combines advanced technology with practical design, catering to both everyday cooking needs and more complex culinary tasks. This model is designed for consumers seeking reliability and efficiency in their kitchen appliances.

One of the standout features of the Sharp R-480J is its powerful 900-watt output. This high wattage allows for faster cooking times, making meal preparation a breeze. The microwave also offers multiple power levels, which provides the user with the flexibility to cook a variety of dishes. Whether you are reheating leftovers, defrosting meats, or cooking fresh vegetables, the R-480J delivers consistent and thorough results.

The microwave is equipped with a spacious interior, accommodating larger dishes with ease. Its turntable design ensures even cooking by allowing food to rotate during the cooking process. This feature minimizes cold spots in the food, ensuring that meals are heated uniformly.

User-friendliness is a key aspect of the Sharp R-480J. The appliance comes with an intuitive control panel featuring pre-programmed settings for common food items such as popcorn, pizza, and dinner plates, making it easy for users to select the right cooking time and power level with just a few button presses. Additionally, the digital display shows cooking times and power levels clearly, enhancing the overall cooking experience.

The R-480J also incorporates advanced sensor cooking technology. This innovative feature detects humidity levels emitted by food and adjusts cooking time accordingly. This means users can achieve perfect results without constantly monitoring the microwave, allowing for greater convenience and efficiency in daily cooking.

Moreover, the microwave's sleek and modern design fits well into various kitchen aesthetics. Its easy-to-clean surfaces minimize maintenance efforts, while the compact build allows it to be placed in smaller kitchens without taking up too much space.

In conclusion, the Sharp R-480J microwave oven stands out for its powerful performance, user-friendly features, and practical design. Its combination of high wattage, multiple power levels, and sensor cooking technology makes it a versatile appliance for any kitchen. Whether tackling daily meals or experimenting with new recipes, the R-480J is equipped to meet diverse cooking needs with ease and efficiency.
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