Sharp R-480J service manual Door Replacement, Removal, View back side of door frame, Re-Install

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R-480J

toward the oven face. Then check lower portion of the latch hook, pushing and pulling lower portion of the door toward the oven face. Both results (play in the door) should be less than 0.5mm.

2.The 1st. latch switch and 2nd. interlock relay control switch interrupt the circuit before the door can be opened.

3.Monitor switch contacts close when door is opened.

4.Re-install outer case and check for microwave leakage around door with an approved microwave survey meter. (Refer to "Microwave Measurement Procedure".)

Door

 

Latch Hook

Latch

 

Heads

2nd. Interlock

 

 

Relay Control

 

Switch

 

Monitor

Switch

Switch

Lever

1st. Latch

 

 

Switch

Figure C-5. Latch Switch Adjustments

DOOR REPLACEMENT

REMOVAL

1.Disconnect oven from power supply.

2.Push the open button and open the door slightly.

3.Insert a putty knife (thickness of about 0.5mm) into the gap between the door stopper and the choke cover to free engaging parts as shown in Figure C-6.

4.Try the principles of the lever and lift up the door stopper.

5.Now, the door stopper is free from the door assembly.

6.Release two (2) pins of door panel from two (2) holes of upper and lower oven hinges by lifting up.

7.Now, door assembly is free from oven cavity.

8.Insert a putty knife (thickness of about 0.5mm) into the gap between the choke cover and door frame as shown in Figure C-6 to free engaging parts.

9.Pry the choke cover by inserting a putty knife as shown Figure C-6.

10.Release choke cover from door panel. 11.Now choke cover is free.

NOTE: When carrying out any repair to the door, do not bend or warp the slit choke (tabs on the door panel assembly) to prevent microwave leakage.

 

 

Door stopper

 

1

2

 

 

13

 

3

12

 

 

11

 

4

10

 

5

9

 

6

7

 

 

Door Frame

8

 

Putty Knife

Choke Cover

Figure C-6. Door Disassembly

12.Slide latch head upward and remove it from door frame with releasing latch spring from door frame and latch head.

13.Now, latch head and latch spring are free. 14.Remove the three (3) screws holding the door panel to

the door frame.

15.Release door panel from nine (9) tabs of door frame by sliding door panel downward.

16.Now, door panel with sealer film is free. 17.Tear sealer film from door panel. 18.Now, door panel is free.

19.Remove door screen from door frame as follows.

1)Turn the door frame over. Refer to Figure 1.

2)Push the lower right corner of the door screen by your finger from the front side of the door frame. And slide the door screen over the lower right corner tab

until the lower and right edges of the door screen touch the tabs of the door frame. Refer to Figure 2.

 

 

Door frame

1

 

2

 

 

Tabs

 

 

Door

 

 

screen

Lower Left

Tabs

Lower Right

Corner Tab

 

Corner Tab

View; back side of door frame

3)Turn the door frame back. Refer to Figure 3.

4)Push the upper right corner of the door screen by your finger from the back side of the door frame.

And slide the door screen counter clockwise. Refer to Figure 3.

5)Pull out the door screen toward the upper right corner of the door frame. Refer to Figure 4.

3

4

View; front side of door frame

20.Now, door screen is free.

RE-INSTALL

1.Re-install door screen to the door frame by reversing the procedure of item 19 of "REMOVAL".

2.Put sealer film on door panel. Refer to “Sealer Film” about how to handle new one.

3.Re-install door panel to door frame by fitting nine (9) tabs of door frame to nine (9) holes of door panel.

4.Hold the door panel to the door frame by sliding the

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Contents Table of Contents Microwave Oven Model R-480J480J Sharp Corporation OSAKA, Japan Microwave Oven480J General Important InformationProduct Specifications General InformationDescription This Appliance Must be EarthedAppearance View Touch Control PanelOperation Sequence OFF ConditionMicrowave Cooking Condition Variable CookingCooking Sequence Power Output ReductionSensor Instant Reheat Function of Important Components Troubleshooting Guide ServicingRemember to Check 3D Remember to Check 4RTest Procedure Possible Cause Defective Parts ProblemProcedure Component Test Letter Magnetron Test Test ProceduresMicrowave Output Power 1 litre water load Test Procedures Letter Component Test Power Transformer TestHigh Voltage Rectifier Assembly Test High Voltage Capacitor TestProcedure Component Test Letter Switch TestNoise Filter Test Carry OUT 3D Checks Thermal CUT-OUT TestBlown Fuse F10A Carry OUT 3D Checks Touch Control Panel Assembly TestHigh Voltage Fuse Test KEY Unit Test Relay TestCarry OUT 3D Checks Steps Occurrence Cause or Correction OmifAH Sensor Test Checking the initial sensor cooking conditionTest Procedures Letter Testing Method for AH Sensor AND/OR Control UnitChecking Control Unit Sensor Dummy Resistor CircuitReset Circuit Indicator CircuitPower Source Circuit Synchronizing Signal CircuitLSI Pin No Signal Description Signal coming from touch keySignal similar to P17 Power source voltage GND0VCommon data signal COM8 Common data signal COM7Common data signal COM6 Common data signal COM5Absolute Humidity Sensor Circuit Structure of Absolute Humidity SensorOther Precautions Touch Control Panel ServicingShapes of Electronic Components Servicing of Touch Control PanelPower Transformer Removal Component Replacement and Adjustment ProcedureOuter Case Removal Positive Lock Connector NO-CASE Type Removal HOW to RE-INSTALL the Turntable Motor CoverMagnetron Removal Turntable Motor RemovalControl Panel Assembly Removal CPU Unit and Power UnitInstallation Oven Lamp and Lamp Socket RemovalPower Supply Cord Replacement After adjustment, check the followingRear View Side ViewDoor Replacement RE-INSTALLRemoval View back side of door frameInstallation After any service, make sure of the followingSealer Film Preparation for Testing Microwave MeasurementRequirement 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 C ZD1 SP1 VRB RY2CN a CN D D10 RY1 RY3 TTMParts List Packing and Accessories MiscellaneousSCREWS, Nuts and Washers 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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