Sharp R-480J Pin No Signal Description, Signal coming from touch key, Signal similar to P17

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R-480J

Pin No.

Signal

I/O

Description

37

P05

OUT

Key strobe signal.

 

 

 

Signal applied to touch-key section. A pulse signal is input to AIN7, P14, P15, P16 and P17

 

 

 

terminal while one of G3 line keys on key matrix is touched.

 

 

 

 

38

P04

OUT

Key strobe signal.

 

 

 

Signal applied to touch-key section. A pulse signal is input to AIN7, P14, P15, P16, P17 and

 

 

 

AIN6 terminal while one of G4 line keys on key matrix is touched.

 

 

 

 

39

P03

OUT

Key strobe signal.

 

 

 

Signal applied to touch-key section. A pulse signal is input to AIN7, P14, P15, P16 and P17

 

 

 

terminal while one of G5 line keys on key matrix is touched.

 

 

 

 

40

P02

OUT

Key strobe signal.

 

 

 

Signal applied to touch-key section. A pulse signal is input to AIN7, P14, P15, P16 and P17

 

 

 

terminal while one of G6 line keys on key matrix is touched.

 

 

 

 

41

P01

OUT

Key strobe signal.

 

 

 

Signal applied to touch-key section. A pulse signal is input to AIN7, P14, P15, P16 and P17

 

 

 

terminal while one of G7 line keys on key matrix is touched.

 

 

 

 

42

P00

OUT

Key strobe signal.

 

 

 

Signal applied to touch-key section. A pulse signal is input to AIN7, P14, P15, P16 and P17

 

 

 

terminal while one of G8 line keys on key matrix is touched.

 

 

 

 

43

P17

IN

Signal coming from touch key.

 

 

 

When either G9 line on key matrix is touched, a corresponding signal out of P00-P07 will be

 

 

 

input into P17. When no key is touched, the signal is held at "H" level.

 

 

 

 

44

P16

IN

Signal similar to P17.

 

 

 

When either G10 line on key matrix is touched, a corresponding signal will be input into P16.

 

 

 

 

45

P15

IN

Signal similar to P17.

 

 

 

When either G11 line on key matrix is touched, a corresponding signal will be input into P15.

 

 

 

 

46

P14

IN

Signal similar to P17.

 

 

 

When either G12 line on key matrix is touched, a corresponding signal will be input into P14.

 

 

 

 

47

AIN7

IN

Signal similar to P17.

 

 

 

When either G13 line on key matrix is touched, a corresponding signal will be input into AIN7.

 

 

 

 

48

AIN6

IN

Input terminal to judge the model.

 

 

 

The signal out of P04 will be input into AIN6 through G4 line on key matrix. The LSI will judge

 

 

 

the model by this signal.

 

 

 

 

49

AIN5

IN

AH sensor input.

 

 

 

This input is an analog input terminal from the AH sensor circuit, and connected to the A/D

 

 

 

converter built into the LSI.

 

 

 

 

50

AIN4

IN

Used for initial balancing of the bridge circuit (absolute humidity sensor). This input is an

 

 

 

analog input terminal from the AH sensor circuit, and connected to the A/D converter built

 

 

 

into the LSI.

 

 

 

 

51

RESET

IN

Auto clear terminal.

 

 

 

Signal is input to reset the LSI to the initial state when power is applied. Temporarily set "L"

 

 

 

level the moment power is applied, at this time the LSI is reset. Thereafter set at "H" level

 

 

 

 

52

NC

_

Terminal not used.

 

 

 

 

 

53

XCOUT

OUT

Terminal not used.

 

 

 

 

54

XCIN

IN

Connected to VC.

 

 

 

 

55

NC

_

Terminal not used.

 

 

 

 

 

56

VCC

IN

Power source voltage: GND(0V).

 

 

 

The power source voltage to drive LSI is input to VCC terminal.

 

 

 

 

57

OSCSEL

IN

Connected to VC(-5V).

 

 

 

 

58

XOUT

OUT

Internal clock oscillation output.

 

 

 

Output to control oscillation input of XIN.

 

 

 

 

59

VSS

IN

Power source voltage: -5.0V.

 

 

 

The power source voltage to the LSI is input to VSS terminal. Connected to VC.

 

 

 

 

60

NC

_

Terminal not used.

 

 

 

 

 

61

XIN

IN

Internal clock oscillation frequency control input setting.

 

 

 

The internal clock frequency is set by inserting the ceramic filter oscillation circuit with respect

 

 

 

to XOUT terminal.

 

 

 

 

62

NC

_

Terminal not used.

 

 

 

 

 

18

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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 CookingSensor Instant Reheat Power Output ReductionCooking Sequence Function of Important Components Troubleshooting Guide ServicingRemember to Check 3D Remember to Check 4RTest Procedure Possible Cause Defective Parts ProblemMicrowave Output Power 1 litre water load Test ProceduresProcedure Component Test Letter Magnetron Test 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 TestHigh Voltage Fuse Test Touch Control Panel Assembly TestBlown Fuse F10A Carry OUT 3D Checks 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 PanelOuter Case Removal Component Replacement and Adjustment ProcedurePower Transformer 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 frameSealer Film After any service, make sure of the followingInstallation 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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