JVC KD-LX555R Buzzer, 12CDAI, 12CDAO, Bus-I/O, Tmo, TM1, DM1, Afck, VOL1, VOL2, Seek/Stp, Fm/Am

Page 23

Pin No

Symbol

I/O

Function

41

LCD_DA

O

Data output to LCD driver

 

 

 

 

42

LCD_SCK

O

Clock output to LCD driver

 

 

 

 

43

LCD-CE1

O

Chip enable output 1 to LCD driver

 

 

 

 

44

BUZZER

O

Buzzer output

 

 

 

 

45

12C_DAI

I

12C communication data input

 

 

 

 

46

12C_DAO

O

12C communication data output

 

 

 

 

47

12C-CLK

O

12C communication clock output

 

 

 

 

48

BUS-I/O

O

J-BUSI/O signal terminal

 

 

 

 

49

TMO

O

Tray motor negative signal output terminal

 

 

 

 

50

TM1

O

Tray motor positive signal output terminal

 

 

 

 

51

DMO

O

Motor control signal output in door down

 

 

 

 

52

DM1

O

Motor control signal output in door up

 

 

 

 

53

ST

I

Stereo signal input L:Stereo

 

 

 

 

54

NC

-

Not use

 

 

 

 

55

AFCK

O

AF check output AF check:L

 

 

 

 

56

C_SW1

I

Chameleon machanical switch 1 detection signal input

 

 

 

 

57

C_SW2

I

Chameleon machanical switch 2 detection signal input

 

 

 

 

58

C_SW3

I

Chameleon machanical switch 3 detection signal input

 

 

 

 

59

C_SW4

I

Chameleon machanical switch 4 detection signal input

 

 

 

 

60

C_SW5

I

Chameleon machanical switch 5 detection signal input

 

 

 

 

61

VOL1

I

Rotary volume signal 1 input

 

 

 

 

62

VOL2

I

Rotary volume signal 2 input

 

 

 

 

63

SEEK/STP

O

Auto seek/stop selection output SEEK:L STOP:H

 

 

 

 

64

NC

-

Not use

 

 

 

 

65

FM/AM

-

FM/AM selection output FM:H AM:L

 

 

 

 

66

PLL_CE

O

IC control CE output

 

 

 

 

67

PLL_DO

O

IC control data output

 

 

 

 

68

PLL_CLK

O

IC control clock output

 

 

 

 

69

PLL_DI

I

IC control data input

 

 

 

 

70

TEL_MUTE

I

Telephone mute detection input

 

 

 

 

71

NC

-

Not use

 

 

 

 

72

VSS

-

GND

 

 

 

 

73

DIM_IN

I

Dimmer detection input L:dimmer ON

 

 

 

 

74

PS1

I

Power save 1 Operating together with ACC.Power save :L Operating :H

 

 

 

 

75

POWER

O

Power ON/OFF selection output Power ON:H

 

 

 

 

76

CD_ON

O

CD power supply control signal output CD:H

 

 

 

 

77

MUTE

O

Mute output MUTEON:L

 

 

 

 

78

CD_RESET

O

Subwoofer cut off frequency control output 1

 

 

 

 

79

CD_MUTE

O

Subwoofer cut off frequency control output 2

 

 

 

 

80

NC

-

Not use

 

 

 

 

81

VDD

-

5V

 

 

 

 

82

VOL_DA

O

data output terminal

 

 

 

 

83

VOL_CLK

O

clock signal output terminal

 

 

 

 

84

CF-SEL

O

FM band filter selection signal output

 

 

 

 

85

NC

O

Not use

 

 

 

 

86

LCD_RST

O

Reset signal output to LCD driver

 

 

 

 

87~93

NC

-

Not use

 

 

 

 

94

TEST

-

GND

 

 

 

 

95~100

NC

-

Not use

 

 

 

 

(No.49793)1-53

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Page 22 Page 24
Contents Area Suffix KD-LX555RBA6956AN IC830, IC831 Reversible motor driver GND GND A2 GNDSCL SDA BR24C01AFV-W-X IC1502 EepromData Decoder VCC SCL SDAGND AddressVDD2 VSS3 CMP MUXVDD1 Rclk QualHA13164A IC961 Regulator HD74HCT126T-X IC1500,IC1503 Buffer LA47505 IC941 Power amp OUTFR+ AC CONT1Outfr StbyVIN1-B VIN1-A VIN1+A VCCP1 VO+VCCP2 VIN4 VIN4G VIN1VCCP2 VIN1-AVIN1+A VCCP1Clock Data Soft Timer GND VDD Select DetectorFront OUT 2 Volume Rear OUT2 Rear OUT1 VDD OUTINB DefpDefn INA11 LC75878W IC601 LCD driver 13 NJU7241F25 IC1651 Regulator GND STB VIN VoutAoutput Input +INPUT Output 12 NJM4565V-X IC1572 Dual ope ampAPC OFF 15 TA2157FN-X IC1601RF ampPIN SEL TEB Rfgc Vctrlpin APC SW TE BAL VCC APC onGND CD-RW SEL APC LDOGND OFF Gvsw16 TC94A14FA IC1621 DSP & DAC AVSS3 PVDD350 No.49793 Vssl ResetVddt Stanby18 UPD784217AGC208 IC962 Main micon 12CDAO PowerBuzzer 12CDAI19 UPD784225GK-629 IC1501 CPU DAC ML MP3 ResetTest Mode MP3 STB20 PCM1716E-X IC1571 D/A converter Block diagram Standard schematic diagrams CD servo control section LCD & Key control section KD-LX555R Electrical parts listRK104JA0J Resistor Front board CD board RK822JA0J COMP.RESISTOR RK303JA0J COMP.RESISTOR
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Manual 58 pages 46.53 Kb

KD-LX555R specifications

The JVC KD-LX555R is a feature-rich car stereo receiver that combines cutting-edge technologies with an impressive array of functionalities, making it a popular choice among car audio enthusiasts. One of the standout features of the KD-LX555R is its compatibility with various audio playback formats, including MP3, WMA, and WAV files. This versatility allows users to enjoy their favorite music from different sources without compromising on sound quality.

Equipped with a front AUX input and a USB port, the KD-LX555R facilitates convenient connectivity for external devices like smartphones and USB drives. This feature enables users to access their digital music collections seamlessly while driving. Additionally, the unit's Bluetooth capability allows for hands-free calling and wireless audio streaming, enhancing convenience and safety by minimizing distractions while driving.

The receiver boasts a sleek and modern design, featuring an easy-to-read LCD display and user-friendly controls. The customizable illumination options enable users to match the display color to their vehicle’s interior, adding a personalized touch. Its ergonomic layout ensures that drivers can adjust settings and navigate menus with minimal effort, allowing for a safer driving experience.

Sound quality is a paramount consideration for JVC, and the KD-LX555R does not disappoint. It features a powerful MOSFET amplifier, delivering robust audio performance with impressive clarity and depth across all frequencies. The inclusion of a 3-band parametric equalizer also allows users to fine-tune the audio output according to their preferences and the acoustics of their car.

For those who desire even more control over their sound, the KD-LX555R supports additional amplifiers and subwoofers through its preamp outputs. This feature empowers users to easily upgrade their sound systems and achieve the desired audio experience. Moreover, the receiver integrates seamlessly with smartphones, enabling features like music control through voice commands.

In summary, the JVC KD-LX555R is a comprehensive car audio solution that emphasizes connectivity, sound quality, and user convenience. With its modern features, robust performance, and customizable options, it caters to a wide range of audio preferences, making it a worthy addition to any car. Whether enjoying favorite tracks or making hands-free calls, the KD-LX555R delivers an exceptional in-car experience that combines technology with practicality.
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