KD-LX555R

5

Block diagram

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REST

 

REST

 

 

 

 

 

SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOAD/FEED

LOAD/FEED+

 

 

 

 

 

MOTOR

LOAD/FEED-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN1601

 

SPINDLE

 

SPINDLE+

 

 

MOTOR

 

SPINDLE-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A,B,E,F

 

IC1601

 

RWSEL

MD,LD

 

CDRF

 

IOP

 

 

 

 

 

 

 

RFDC

RFGC

 

 

 

TEO

RFGO

 

 

 

TEN

RFRP

 

 

 

TEB

FEN

 

 

 

SEL

 

 

 

REST

SW1

SW2

IC1571

 

VOUTL

IC1572

CDL-CH

 

VOUTR

D/A

 

CDLPF

CDR-CH

 

BCKLRCK

CONVERTER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC1652

A0 to A16

 

IC1653

 

MP3

 

SRAM

 

WF,OF,CS1

 

 

DECODER

I/O1 to I/O8

 

 

 

 

 

 

 

 

DATA

ANT

 

J1

 

 

 

 

 

AM_ANT

 

TU1

 

TU_Lch

IC400

 

 

 

 

 

FM/AM

 

 

 

 

 

FM_ANT

 

 

TU_Rch

E.VOLUME

 

 

 

 

 

TUNER

 

 

FRONTL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REARL

 

 

 

MBC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC461

 

 

 

SQ

 

 

 

 

 

PREAMP

 

 

 

SM

 

 

 

 

 

 

 

 

FM/AM_DET

 

 

 

 

 

 

 

 

SD/ST

 

 

 

 

 

 

 

 

AFCK

 

 

 

 

 

 

 

 

 

SEEK/STOP

 

 

FRONTR

IC361

CD_Lch,CD_Rch

FM/AM

 

 

 

 

REARR

PREAMP

PLL_CE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PLL_DO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LINE OUT

 

 

 

 

 

 

 

 

 

 

 

 

CN380

 

 

FRONTL

 

 

FRONTR

FRONTR

REARL

 

 

 

 

 

REARR

REARR

 

 

 

FRONTL

 

 

 

 

 

 

REARL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

3

2

1

BCK,LRCK,AOUT

PLL_CLK

PLL_DI

IC941

POWER

SW1 SW1

SW2 SW2

PICKUP FOCUS+

FOCUS-

TRACKING+

FOCUS+

FOCUS-

IC1621

D.SERVO

DSP

TRO VREF FOO FMO CMO

BUSO to BUS3

BUCK,CCF

DSPRESET CLOCK

/RESET

MIDIO RST

/MCLK DACMI

REQ DACMC

DATA DACMD DACCS

IC1501

CPU

BUSCLK BUSSI/SO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CF_SEL

 

 

 

IC51

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RDS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RDS_SCK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RDS_DA

 

 

 

 

 

 

 

 

 

 

 

 

 

P.DET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CD_MUTE

 

 

 

 

 

 

 

 

VOL_DA

CH_Lch

 

 

 

 

 

 

 

 

CD_P.REQ

 

 

 

 

 

 

 

CH_Rch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VOL_CLK

 

 

 

 

 

 

 

 

CD_RESET

 

 

 

 

IC962

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AMP

 

OUTFL+

 

OUTFL-

 

OUTFR+

 

OUTFR-

 

OUTRL+

DC

OUTRL-

OUTRR+

 

TRACKING-

A,B,E,F

MD,LD

TRACKING+

TRACKING-

SPINDLE+

SPINDLE-

LOAD/FEED+

LOAD/FEED-

IC1681

CD

DRIVER

MUTE LOAD LD/FF

SDA

SCL

IC1502

EEPROM

/BUSIO BUSIO BUSSI BUSSO BUSSCK

CDMUTTE

CDREQ

P.DET

B.DET

CDREST

DISCSEL

IC1503

J-BUS

BUFFER

 

CPU

 

 

 

SDA

 

 

 

SCL

 

 

 

IC703

 

 

 

EEPROM

 

 

 

BUSSCK

 

 

 

BUSIO

 

 

 

BUSSO

 

 

 

BUSSI

IC771

 

 

 

BUSSI

 

 

J.BUS

BUSSI/SO

 

BUSSCK

 

BUFFER

BUSCLIC

 

 

OUTRR-

CN901

CONNECTOR

REMOTE

 

CN771

CD CHANGER

S1 to S74

COM1 to COM8

LCD1

LED P1 to P4

DRIVER

IC603

REMOCON

SENSOR

LCDDA

LCDCL

LCDCE1 IC601 LCDRST

LCD

DRIVER

REMOCON ENCODER ENC0ENC1

PANEL CASW4 SENSOR CASW5

 

 

 

CN1601

CN701

 

 

 

REMOCON,LCDRST,LCDCE1,

H.REMOCON

 

 

 

KEY2,RESETCASW4,CASW5,

 

 

 

 

LCDCL,LCDDA,VOL1,VOL2

 

 

 

 

 

 

C_SW1

 

 

 

C_SW2

 

 

 

C_SW3

 

 

DM0

 

 

 

 

DM1

 

IC830

 

 

DMK

 

MOTOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN840

H.REMOCON

CN704

 

CN830

DOOR

MOTOR

 

S631

KEY0

S639

KEY1

to

 

to

 

LED

S638

 

S643

 

 

MATRIX

 

 

 

CN1631

CN702

 

 

 

KEY0

DIRIVER

KEY1

 

TM1

IC831

TM0

TMK

MOTOR

 

DRIVER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN831

 

 

 

 

 

 

TRAY

 

 

 

MOTOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ABCDEFGH

2-1

Page 27
Image 27
JVC KD-LX555R service manual Block diagram

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.