JVC KD-LX555R Service Manual
JVC KD-LX555R Service Manual

JVC KD-LX555R Service Manual

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SERVICE MANUAL
4
2003
49793
1
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3
Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4
Description of major ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
CD RECEIVER
KD-LX555R
S
S
T
D
TABLE OF CONTENTS
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
KD-LX555R
8
9
12
M
7
SOURCE
E ------ Continental Europe
Area Suffix
No.49793
2003/5

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Table of Contents
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Summary of Contents for JVC KD-LX555R

  • Page 1 SERVICE MANUAL CD RECEIVER 49793 2003 KD-LX555R KD-LX555R SOURCE Area Suffix E ------ Continental Europe TABLE OF CONTENTS Precautions ................3 Disassembly method .
  • Page 2: Description Of Major Ics

    SECTION 4 Description of major ICs BA6956AN (IC830, IC831) : Reversible motor driver • Block diagram CONTROL LOGIC • Pin function • Truth table Pin No. Symbol Function OUT1 OUT2 MODE VREF Output high voltage level control terminal Forward rotation mode OUT2 Output terminal for motor Reverse rotation mode...
  • Page 3 BR24C01AFV-W-X (IC1502) : EEPROM • Pin layout • Block diagram 1kbit EEPROM ARRAY 8bit 7bit SLAVE/WORD ADDRESS DATA 7bit DECODER ADDRESS REGISTER REGISTER START STOP CONTROL LOGIC HIGH VOLTAGE GEN. Vcc LEVEL DETECT • Pin function Pin name Description Power supply Ground (0v) A0,A1,A2 Slave address set...
  • Page 4: Data Register

    BR24C32F (IC703) : EEPROM • Pin Layout • Pin layout & Block diagram PIN NAME Function Power Supply Ground (0V) A0-A2 Slave Address Set BR24C32/F Serial Clock Input I/O Slave and Word Address. Serial Data Input$ Serial Data Output *1 Write Protect Input •...
  • Page 5 BU1923F (IC51) : RDS decoder • Pin layout QUAL RCLK RDATA N.C. Vref VDD1 VDD2 VSS1 VSS2 VSS3 • Block diagram VSS3 100k 120k 100k 8th Switched capacitor filter Vref comparator anti-aliasing filter RCLK VDD1 Analog Power supply VSS1 QUAL Differential Bi-phase RDATA...
  • Page 6 HA13164A (IC961) : Regulator • Terminal layout 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 • Block diagram 100u 0.1u BATT.DET OUT ANT OUT Surge Protector 0.1u EXT OUT COMPOUT BIAS 0.1u VDD OUT ANT CTRL 0.1u CTRL...
  • Page 7 4.7 HD74HCT126T-X : (IC1500,IC1503) Buffer • Pin arrangement • Pin function Input Output H : High level L : Low level X : Irrelevant Z : Off (Hhigh-impedance)state of a 3-stage output • Block diagram (No.49793)1-37...
  • Page 8 LA47505 (IC941) : Power amp. • Terminal layout Protective circuit Stand by Switch Ripple Mute Filter circuit protective circuit Muting & On Time Control Circuit 1-38 (No.49793)
  • Page 9 • Terminal layout • Pin function Pin No. Symbol Function AC CONT1 Header of IC GND1 Power GND OUTFR- Outpur(-) for front Rch STBY Stand by input OUTFR+ Output (+) for front Rch Vcc1/2 Power input OUTRR- Output (-) for rear Rch GND2 Power GND OUTRR+...
  • Page 10 LA6579H-X (IC1681) : 4-Channel bridge driver • Pin layout & Block diagram VIN1-A VIN1 VIN1_SW [H]: OP-AMP_A [L]: OP-AMP_B VIN1+A VIN1-B VCCP1 VIN1+B Signal system S-GND power supply VIN1-SW All outputs ON/OFF H : ON VO2+ MUTE MUTE L : OFF VO2- VREFIN Power system...
  • Page 11 • Pin function Pin No. Symbol Function VIN1-A CH1 input AMP_inverted input VIN1+A CH1 input AMP_non-inverted input VCCP1 CH1 and CH2 power stage power supply VO1+ Output pin(+)for channel 1 VO1- CH1 output pin (-) for channel 1 VO2+ Output pin(+)for channel 2 VO2- Output pin(-)for channel 2 VO3+...
  • Page 12 4.10 M61508FP (IC400) : E.volume • Pin layout & Block diagram VDD OUT 2 18 VDD OUT 1 CLOCK DATA SOFT TIMER SELECT DETECTOR NonFadaer OUT 2 NonFadaer OUT 1 NON FADER NON FADER VOLUME VOLUME FRONT OUT 2 FRONT OUT 1 REAR OUT2 REAR OUT1 VOLUME 2...
  • Page 13 • Pin function Pin No. Symbol Function IC signal GND DEFP IN 1 Ope amp positive input DEFN IN 1 Ope amp negative input INA 1 Input selector ch1 input terminal INB 1 Input selector ch1 input terminal INC 1 Input selector ch1 input terminal IND 1 Input selector ch1 input terminal...
  • Page 14 4.11 LC75878W (IC601) : LCD driver • Pin layout 100 ~ 76 26 ~ 50 • Block diagram GENERAL COMMON SEGMENT DRIVER & LATCH PORT DRIVER CLOCK CONTROL GENERATOR REGISTER VLCD CONTRAST SHIFT REGISTER ADJUSTER VLCD0 VLCD1 VLCD2 INTERFACE VLCD3 VLCD4 •...
  • Page 15: Pin Function

    4.12 NJM4565V-X (IC1572) : Dual ope amp • Terminal layout & Pin function AOUTPUT A-INPUT A+INPUT B+INPUT B-INPUT B OUTPUT 4.13 NJU7241F25 (IC1651) : Regulator • Pin Layout • Block Diagram Short protect GND 1 5 STB VIN 2 3 VOUT VIN 2 STB 5 VOUT 3...
  • Page 16 4.15 TA2157FN-X (IC1601):RF amp • Terminal layout • Block diagram PEAK 50 A BOTTOM PEAK 1.75k 240k 15pF x0.5 240k 15pF x0.5 180k 40pF RFGC (APC SW) (TE BAL) (AGC Gian) (TE BAL) VCTRLPIN Normal mode APC ON -50% +12dB (0dB) Normal mode APC ON...
  • Page 17 • Pin function Pin No. Symbol Function 3.3V power supply pin Main-beam amp input pin Main-beam amp input pin Sub-beam amp input pin Sub-beam amp input pin Monitor photo diode amp input pin Laser diode amp output pin APC circuit ON/OFF control signal, laser diode (LDO) control signal input or bottom/peak detection frequency change pin.
  • Page 18 4.16 TC94A14FA (IC1621) : DSP & DAC • Terminal layout & block daiagram Clock generator 1-bit Servo control Digital equalizer Address automatic circuit adjustment circuit Data CLV servo slicer 16 k Synchronous guarantee decoder Audio out Digital circuit output Micro- controller Sub code interface...
  • Page 19 Symbol I/O Descroption TMAX O TMAX detection result output pin. TMAX Detection Result TMAX Output Longer than fixed period "PV " Within fixed period "HiZ" Shorter than fixed period "AV " LPFN I Inverted input pin for PLL LPF amp. LPFO O Output pin for PLL LPF amp.
  • Page 20: Pin Layout

    4.17 TC94A20F-011 (IC1652) : DAC/SRAM built in type D-ROM decoder+ MP3 decoder • Pin layout • Block diagram Switch General Timing inputbport generator 1-50 (No.49793)
  • Page 21 • Pin functions Pin No Symbol Functions /RESET Hard reset input H:normal L:reset MiMD Micon I/F mode select input /MiCS Micon I/F chip select input /MiLP Micon I/F latch palus input MiDio I/O Micon I/F data input/output /MiCK Micon I/F clock input MiACK Micon I/F acknowledge output VDDT...
  • Page 22 4.18 UPD784217AGC208 (IC962) : Main micon • Pin Layout 100 ~ 76 26 ~ 50 • Pin functions Pin No Symbol Function Not use Not use Not use Not use Not use Not use DIM_OUT DIMMER pulse control output ILLUM1 POWER ON:H,FLAT PANEL:L RESET Reset detection teaminal...
  • Page 23 Pin No Symbol Function LCD_DA Data output to LCD driver LCD_SCK Clock output to LCD driver LCD-CE1 Chip enable output 1 to LCD driver BUZZER Buzzer output 12C_DAI 12C communication data input 12C_DAO 12C communication data output 12C-CLK 12C communication clock output BUS-I/O J-BUSI/O signal terminal Tray motor negative signal output terminal...
  • Page 24 Chip enable output for LCD driver LCD DA Data output for LCD driver LCD CK Clock output for LCD driver BUS I/O JVC BUS input/output control terminal (negative) BUS I/O JVC BUS input/output control terminal BUS SI JVC BUS data input terminal BUS SO...
  • Page 25 CD mechanism SW1 input terminal B.DET Backup power supply detection input terminal (H:Stop mode) P.DET Main power off detection input terminal (H:HALT mode) BUS INT JVC BUS communication start interrupt input terminal MP3 REQ CD MP3 request signal input terminal VSS0 VDD1 3.3V...
  • Page 26 4.20 PCM1716E-X (IC1571) : D/A converter • Pin layout • Block diagram Serial VoutL Low-pass Filter Input LBCK Mult-level EXTL 8X Oversampling DATA Delta-Sigma Digital Filter Low-pass VoutR Modulator Filter with ML/llS Function Controller EXTR MC/DM1 Mode MD/DM0 ZERO Control CS/WO BPZ-Cont Open drain...
  • Page 27: Block Diagram

    KD-LX555R Block diagram IC400 TU_Lch AM_ANT VOUTL IC1571 IC1572 FM/AM IC1601 A,B,E,F RWSEL CDL-CH E.VOLUME FM_ANT TU_Rch VOUTR REST REST CDLPF TUNER MD,LD CDR-CH CDRF FRONTL LRCK CONVERTER SWITCH REARL FRONTL RFDC RFGC FRONTR RFGO IC461 FRONTR REARL RFRP PREAMP...
  • Page 28: Standard Schematic Diagrams

    KD-LX555R KD-LX555R Standard schematic diagrams Main amp section LINE[1-4] FAE372-E01 FM/AM PRE AMP E.VOLUME TUNER D430 R472 CRS03 R471 LINE OUT 3.3K R400 C400 4.7/25 C407 CDCH[2] 4.7/25 R467 R465 C401 4.7/25 C404 C405 R382 R213 C213 2.2K 2.2/50 2.2/50...
  • Page 29 KD-LX555R CD servo control section L[1-4] B[1] CD L.P .F TP42 CD RF VREF D-A CONVERTOR R1585 C1611 R1613 R1581 C1585 R1583 C1587 C1589 68P CH 120P N[1] R1611 R1610 4.7/35 4.7/35 R1614 R1612 MECHANISM C1610 TP44 IC1571 PCM1716E IC1572...
  • Page 30 KD-LX555R KD-LX555R LCD & Key control section SWITCH PWB 6 43 6 42 (1 0 K) TEST1 BAND / MODE 1 / EQ 2 / MONO SOUCE / ATT KEY0 EJECT/OFF 6 / RND 5 / RPT 4 / INT...
  • Page 31: Electrical Parts List

    KD-LX555R Electrical parts list Main board  Symbol Part No. Part Name Description Local Block No. [0][1][0][0]  Symbol Part No. Part Name Description Local CY473623J C CAPACITOR 0.047MF CE4763468 E CAPACITOR 47MF/16V CY103623J C CAPACITOR 0.01MF IC51 000874740-T BU1923F...
  • Page 32 KD-LX555R Symbol Symbol   Part No. Part Name Description Local Part No. Part Name Description Local C713 CE2271468 E CAPACITOR 220MF/10V R118 RK104JA0J C RESISTOR 1/10W 100K C719 CZ2216D2J C CAPACITOR 220PF R123 RK123JA0J C RESISTOR 1/10W 12K C720...
  • Page 33: Front Board

    KD-LX555R Symbol Symbol   Part No. Part Name Description Local Part No. Part Name Description Local R727 RK103JA0J C RESISTOR 1/10W 10K 6P FPC CN702 KZ040060L CONN.TERMINAL CONNECTO R728 RK222JA0J C RESISTOR 1/10W 2.2K CN704 KN530409L CONN.TERMINAL 4P BASE POST...
  • Page 34 KD-LX555R Symbol Symbol   Part No. Part Name Description Local Part No. Part Name Description Local C607 CY104423J C CAPACITOR 0.1MF FL611 000282950 C608 CY104423J C CAPACITOR 0.1MF S623 000392970-T TACT SW C609 CZ6816D2J C CAPACITOR 680 PF S624...
  • Page 35 KD-LX555R Symbol Symbol   Part No. Part Name Description Local Part No. Part Name Description Local C1577 CY104623J C CAPACITOR 0.1 MF C1664 CY223623J C CAPACITOR 0.022 MF C1578 CX476012L E CAPACITOR 47MF/6.3V C1665 CY334122J C CAPACITOR 0.33MF C1579...
  • Page 36 KD-LX555R Symbol Symbol   Part No. Part Name Description Local Part No. Part Name Description Local R1584 RK123JA0J C RESISTOR 1/10W12K R1684 RK153JA0J C RESISTOR 1/10W15K R1585 RK303JA0J COMP.RESISTOR 1/10W30K R1685 RK333JA0J COMP.RESISTOR 1/10W30K R1586 RK303JA0J COMP.RESISTOR 1/10W30K R1686 RK822JA0J COMP.RESISTOR...

Table of Contents