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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Sharp R-480J service manual Pin No Signal Description, Signal coming from touch key, Signal similar to P17, AH sensor input
Page 19 Page 21

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.

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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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