JVC KD-LX555R service manual PVDD3, AVSS3

Page 19

Pin

Symbol

I/O

Descroption

No

17

TMAX

O

TMAX detection result output pin.

 

 

 

 

TMAX Detection Result

TMAX Output

 

 

 

 

 

Longer than fixed period

"PVDD3"

 

 

 

 

 

Within fixed period

"HiZ"

 

 

 

 

 

Shorter than fixed period

"AVSS3"

 

 

 

 

 

 

 

 

18

LPFN

I

Inverted input pin for PLL LPF amp.

 

 

19

LPFO

O

Output pin for PLL LPF amp.

 

 

20

PVREF

-

PLL-only VREF pin.

 

 

21

VCOF

O

VCO filter pin.

 

 

22

AVSS3

-

Analog GND pin.

 

 

23

SLCO

O

DAC output pin for data slice level generation.

 

 

24

RFI

I

RF signal input pin. Zin selectable by command.

 

 

25

AVDD3

-

Analog 3.3V power supply voltage pin.

 

 

26

RFCT

I

RFRP signal center level input pin.

 

 

27

RFZI

I

RFRP signal zero-cross input pin.

 

 

28

RFRP

I

RF ripple signal input pin.

 

 

29

FEI

I

Focus error signal input pin.

 

 

30

SBAD

I

Sub-beam adder signal input pin.

 

 

31

TEI

I

Tracking error input pin. Inputs when tracking servo is on.

 

 

32

TEZI

I

Tracking error signal zero-cross input pin.

 

 

33

FOO

O

Focus equalizer output pin.

 

 

34

TRO

O

Tracking equalizer output pin.

 

 

35

VREF

-

Analog reference power supply voltage pin.

 

 

36

RFGC

O

RF amplitude adjustment control signal output pin.

 

 

37

TEBC

O

Tracking balance control signal output pin.

 

 

38

SEL

O

APC circuit ON/OFF signal output pin. At laser on, high impedance with UHS="L",

 

 

 

H output with UHS="H".

 

 

39

AVDD3

-

Analog 3.3V power supply voltage pin.

 

 

40

FMO

O

Feed equalizer output pin.

 

 

41

DMO

O

Disc equalizer output pin.

 

 

42

VSS3

-

Digital GND pin.

 

 

43

VDD3

-

Digital 3.3V power supply voltage pin.

 

 

44

TESIN

I

Test input pin. Normally, fixed to "L".

 

 

45

XVSS3

-

System clock oscillator GND pin.

 

 

46

XI

I

System clock oscillator input pin.

 

 

47

XO

O

System clock oscillator output pin.

 

 

48

XVDD3

-

System clock oscillator 3.3V power supply voltage pin.

 

 

49

DVSS3R

-

DA converter GND pin.

 

 

50

RO

O

R-channel data forward output pin.

 

 

51

DVDD3

-

DA converter 3.3V power supply pin.

 

 

52

DVR

-

Reference voltage pin.

 

 

53

LO

O

L-channel data forward output pin.

 

 

54

DVSS3L

-

DA converter GND pin.

 

 

55

ZDET

O

1 bit DA converter zero detection flag output pin.

 

 

56

VSS5

-

Microcontroller interface GND pin.

 

 

57

BUS0

 

 

 

 

 

58

BUS1

 

 

 

 

 

59

BUS2

I/O Microcontroller interface data I/O pins.

 

 

60

BUS3

 

 

 

 

 

61

BUCK

I

Microcontroller interface clock input pin.

 

 

62

/CCE

I

Microcontroller interface chip enable signal input pin.At "L", BUS0 to BUS3 are active.

63

/RST

I

Reset signal input pin. At reset, "L".

 

 

64

VDD5

-

Microcontroller interface 5V power supply pin.

 

 

(No.49793)1-49

Page 18 Page 20
Image 19
Page 18 Page 20
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
Related manuals
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.
Top Page Image Contents