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JVC KD-S7R, Service Manual

The JVC KD-S7R is a high-quality car stereo system designed to elevate your driving experience. Enhance your audio entertainment with its advanced features and intuitive controls. Unlock the full potential of this device by downloading the free Service Manual from manualshive.com, providing comprehensive instructions for optimal usage and maintenance.

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KD-S7R

1-16

UPD178076GF-525

 

 (IC701): System CPU

1.Terminal layout

2.Block diagram

1

30

~

80

51

~

100  ~  81

31  ~  50

8-bit TIMER/
EVENT COUNTER 1

8-bit TIMER/
EVENT COUNTER 0

WATCHDOG TIMER

BASIC TIMER

SERIAL 
INTERFACE 0

TO0/VTR-CONT

TI00/POWER

TI01/CD-ON

TI50/MUTE

TO50/NC

TI51/STAGE

TO51/NC

SI0/SB0/SDA0/NC

SO0/SB1/SDA1/VOL-DA

SCK0/SCL/VOL-CLK

SI1/JBUS-SI

SO1/JBUS-SO

SCK1/JBUS-SCK

STB/NC

BUSY/NC

SI3/NC

SO3/LCD-DA

SCK3/SCL/LCD-CLK

RESET

CPU

PERIPHERAL

V

OSC

V

CPU

TXD0/LM1

RXD0/LM0

INTP0/NC

INTP7/NC

VM45/VTR-LOGIC

REGOSC

REGCPU

GND0

GND1

BEEP0/BUZZER

BUZ/JAPAN

RESET

X1

X2

V

DD

PORT

GNDPORT

V

DD

SERIAL

INTERFACE 1

SERIAL

INTERFACE 3

UART0

8

INTERRUPT

CONTROL

BUZER OUTPUT

SYSTEM

CONTROL

VOLTAGE

REGULATOR

PLL 

VOLTAGE

REGULATOR

PLL

FREQUENCY

COUNTER

A/D

CONVERTER

PORT 13

PORT 12

PORT10

PORT 7

PORT 6

PORT 5

PORT 4

PORT 3

   PD178078

:3Kbyte

    PD178076

:2Kbyte

RAM

   PD178078

 :60Kbyte

   PD178076

 :48Kbyte

RAM

78k/0

CPU

CPRE

16-bit TIMER/
EVENT COUNTER

PORT 0

PORT 1

PORT 2

8

8

8

8

8

8

8

8

8

8

3

5

NC,JBUS-INT,SW1,
REMOCON,PS1,PS2,
DETACH,NC

KEY0,KEY1,KEY2,LEVEL,
SM,NC,

JBUS-SI,JBUS-SO,
JBUS-SCK,NC,VOL-DA,
VOL-CLK

VTR-LOGIC,VTR-CONT,
POWER,CD-ON,MUTE,
STAGE,BUZZER,JAPAN

NC

NC,LCD-CE,SW2,SW3,
SW4,RST-SW,ENC1,ENC2

MONO,SEEK/STOP,
FM/AM,NC,

NC,LCD-DA,LCD-CLK,
JBUS-/O,LM0,LM1,BUCK,
CCE

SD/ST,NC,IFC

BUS0,BUS1,BUS2,BUS3,
RST

NC

AN10/KEY0

AN17/NC

AMIFC/NC

FMIFC/IFC

EO1

EO0

VCOL

VCOH

V

DD

PLL

GNDPLL

IC

GND2

AV

DD

AV

SS

Summary of Contents for KD-S7R

Page 1: ...l Europe Contents Safety precaution Preventing static electricity Important for laser products Location of main parts Disassembly method 1 2 1 3 1 4 1 5 1 6 Adjustment method Flow of functional operation unit TOC read Maintenance of laser pickup Replacement of laser pickup Description of major ICs 1 11 1 12 1 14 1 14 1 15 COMPACT DIGITAL AUDIO ...

Page 2: ...t over on some parts of the chassis Therefore pay attention to such burrs in the case of preforming repair of this system Safety precaution Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check ...

Page 3: ...st the semi fixed resistor that adjusts the laser power Do not turn it 1 1 3 Handling the optical pickup 1 In order to maintain quality during transport and before installation both sides of the laser diode on the replacement optical pickup are shorted After replacement return the shorted parts to their original condition Refer to the text 2 Do not use a tester to check the condition of the laser ...

Page 4: ...ng är denna del är öppnad och spårren är urkopplad Betrakta ej strålen VARO Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle Älä katso säteeseen ADVARSEL Usynlig laserstråling ved åbning når sikkerhedsafbrydere er ude af funktion Undgå udsættelse for stråling ADVARSEL Usynlig laserstråling ved åpning når sikkerhetsbryteren er avslott unngå utsettelse for strålin...

Page 5: ...arts Control unit CD mechanism Display LED key control board Main board Tuner pack Main board Connector to controller Power IC ISO connector Antenna jack Loading motor Mechanism relay board Damper Pickup unit Damper Feed motor Spindle motor ...

Page 6: ...n of the arrow Removing the front chassis See Fig 2 Removing the heat sink See Fig 3 1 Remove the three screws A attaching the heat sink on the left side of the body and remove the heat sink Removing the bottom cover See Fig 4 1 2 Turn the body upside down Insert a screwdriver to the two joints c and two joints d on both sides of the body and the joint e on the back of the body then detach the bot...

Page 7: ...m assembly Removing the CD mechanism assembly See Fig 7 1 2 3 4 Remove the front chassis Remove the bottom cover Remove the main amplifier board assembly Remove the three screws D attaching the CD mechanism assembly from the top cover Removing the control switch board See Fig 8 and 9 1 2 3 Remove the front chassis Remove the four screws E attaching the rear cover on the back of the front panel uni...

Page 8: ...move the CD mechanism control board in the direction of the arrow while releasing it from the two damper bracket slots i and the front bracket slot j Disconnect the flexible wire from connector on the pickup unit 1 2 Removing the CD mechanism control board See Fig 10 and 11 Turn the FD gear in the direction of the arrow to move the entire pickup unit to the appropriate position where the flexible ...

Page 9: ... both sides fix arms and move the fix plates in the direction of the arrow to place the four shafts l as shown in Fig 17 and 18 Remove the CD mechanism ass y and the two springs m attaching the flame Remove the two screws J and both sides rear damper brackets from the dampers Detach the CD mechanism ass y from the left side to the right side 1 2 3 4 Removing the CD mechanism ass y See Fig 10 15 to...

Page 10: ...p mount nut from the pickup unit Pull out the FD screw 2 Removing the pickup unit See Fig 19 and 20 When reattaching the pickup unit reattach the part o of the pickup unit then the part n of the FD screw ATTENTION Prior to performing the following procedure remove the CD mechanism control board the front bracket loading motor the CD mechanism ass y and the feed motor ass y Turn up the CD mechanism...

Page 11: ...e DC14 4V 10 5 16V Load impedance 4 4 to 8 allowance Output Level Line out 2 0V 20 k Vol MAX How to connect the extension cable for adjusting Dummy load Exclusive dummy load should be used for AM and FM For FM dummy load there is a loss of 6dB between SSG output and antenna input The loss of 6dB need not be considered since direct reading of figures are applied in this working standard Standard vo...

Page 12: ...oop ON When the laser diode correctly emits Microprocessor commands Rough Servo Mode CLV Servo Mode ProgramArea CLV Servo Mode Lead In Area Digital 0 RF signal Flow of functional operation until TOC read When the pickup correctly moves to the inner area of the disc TERMINAL Microprocessor commands FMO TC9462 53 FEED MOTOR TERMINAL IC581 5 REST SW When the disc correctly rotates Tracking Servo Loop...

Page 13: ... 15 18 Check the pickup and its connections NO YES YES YES Does the S search waveform appear at IC581 pins 17 and 18 Is the disk rotated Does the RF signal appear at TP1 Is 4V present at IC581 pins 7 and 8 Check the spindle motor and its wiring Is 4V present at IC521 pin 55 Check the vicinity of IC581 Check IC501 and IC521 YES NO NO NO NO NO YES YES YES Check the circuits in the vicinity of IC501 ...

Page 14: ...e this adjustment should be performed to match the characteristics of the whole optical block do not touch the semi fixed resistor If the laser power is lower than the specified value the laser diode is almost worn out and the laser pickup should be replaced If the semi fixed resistor is adjusted while the pickup is functioning normally the laser pickup may be damaged due to excessive current Turn...

Page 15: ... IAL Serial data input output Ground output left rear output left front Treble control capacitor left channel or input from an external equalizer Bass control capacitor left channel or output to an external equalizer Bass control capacitor left channel Input volume 1 left control part Input loudness left control part Output source selector left channel Not used Not used Input C left source Not use...

Page 16: ...AL INTERFACE 1 SERIAL INTERFACE 3 UART0 8 INTERRUPT CONTROL BUZER OUTPUT SYSTEM CONTROL VOLTAGE REGULATOR PLL VOLTAGE REGULATOR PLL FREQUENCY COUNTER A D CONVERTER PORT 13 PORT 12 PORT10 PORT 7 PORT 6 PORT 5 PORT 4 PORT 3 PD178078 3Kbyte PD178076 2Kbyte RAM PD178078 60Kbyte PD178076 48Kbyte RAM 78k 0 CPU CPRE 16 bit TIMER EVENT COUNTER PORT 0 PORT 1 PORT 2 8 8 8 8 8 8 8 8 8 8 3 5 NC JBUS INT SW1 R...

Page 17: ...ON LINE JVC BUS COMMUNICATION LINE JVC BUS COMMUNICATION LINE JVC BUS COMMUNICATION LINE Non connection Non connection SERIAL DATA INPUT SERIAL DATA OUTPUT SERIAL CLOCK OUTPUT Non connection LCD DRIVER SERIAL DATA OUTPUT LCD DRIVER SERIAL CLOCK OUTPUT JVC BUS OUTPUT SELECT Non connection LCD DRIVER COMMUNICATION LINE CD MECHA SW CD MECHA SW CD MECHA SW TRAVERSE MECHA REST SW ENCODER INPUT ENCORDER...

Page 18: ...T Non connection TEL MUTE OUTPUT POWER CONT CD POWER CONT MUTE CONT Non connection Non connection Non connection Non connection Non connection Non connection Non connection Non connection Non connection CD MECHA DRIVER CONT CD MECHA DRIVER CONT CD LSI COMMUNICATION LINE CD LSI COMMUNICATION LINE CD LSI COMMUNICATION LINE CD LSI COMMUNICATION LINE CD LSI COMMUNICATION LINE CD LSI COMMUNICATION LINE...

Page 19: ...ock This output voltage is approximately 0 7V lower than VDD S The max output current is 100mA Control of the COMP output by inputting voltage This output voltage is 5 7V and max output current is 100mA This voltage supply is for microcomputer Whenever back up voltage supply is connected the output keeps on running This output voltage is 9 0v and max output current is 500mA This voltage supply for...

Page 20: ... 1 Pin layout 2 Block diagram IN1 IN2 IN3 IN4 STBY 2 1 11 13 23 10 TAB PROTECTOR ASO SURGE TSD INPUTBUFFER1 INPUTBUFFER2 INPUTBUFFER3 INPUTBUFFER4 AMP1 AMP2 AMP3 AMP4 MUTE PVCC1 PVCC2 INVCC 12 22 14 18 6 3 4 5 7 8 9 15 16 17 19 20 21 1 23 ...

Page 21: ... 2Y 2Y 3Y 4Y Output Output Output Output Sample as Load Circuit 1 Sample as Load Circuit 1 Sample as Load Circuit 1 1k 1k S1 CL Input Outout C L H H A X L H Y Z H L 1 2 3 4 5 6 7 14 13 12 11 10 9 8 HD74HC126FP X IC801 Buffer 1 Terminal layout 2 Block diagram 3 Pin function ...

Page 22: ...V Power for channels 3 4 and 5 VCC1 and VCC S short circuited Loading output Loading output Output pin for channel 4 Output pin for channel 4 Output pin for channel 3 Output pin for channel 3 Output pin for channel 2 Output pin for channel 2 Output pin for channel 1 Output pin for channel 1 Power for channels 1 and 2 BTL VCC S and VCC2 short circuited Input pin for channel 1 Input pin for channel ...

Page 23: ...nput Common driver output pins The frame frequency is given by t0 fosc 384 Hz Power supply connection Provide a voltage of between 4 5 and 6 0V Display turning off input pin INT L Vss off S1 to S52 COM1 to COM3 L INT H VDD on Serial data can be transferred in display off mode Used for applying the LCD drive 2 3 bias voltage externally Must be connected to VDD2 when a 1 2 bias drive scheme is used ...

Page 24: ...c signal output terminal Sub code block sync signal output terminal Processor status signal readout clock output terminal Processor status signal output terminal Correction frame clock output terminal 7 35kHz Internal signal DSP internal flag and PLL clock output terminal Digital power supply voltage terminal Test input output terminal Normally keep at L level PLL double reference voltage supply t...

Page 25: ...put terminal for internal signal Digital power supply voltage terminal Digital GND terminal General I O terminal This terminal control IO0 IO3 terminal Normally keep at open DAC test mode terminal Normally keep at open Test input terminal Normally keep at L level Test input output terminal Normally keep at L level Digital GND terminal Crystal oscillator connecting input terminal for DSP Crystal os...

Page 26: ...modulator 1 Pin layout 2 Pin function 3 Block diagram 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Quality indication output RDS data output Reference voltage output 0 5VDDA Multiplex signal input 5V supply voltage for anarog part Ground for analog part 0V Subcarrier input to comparator Subcarrier output of reconstruction filter Oscillator mode test sontrol input T...

Page 27: ...hm 20k ohm 20k ohm 13k ohm 680 ohm 2 12k ohm BOTTOM PEAK 20k ohm 20k ohm 20k ohm 12k ohm 1 74k ohm 47k ohm 12k ohm 180k ohm 50uA 21k ohm 21k ohm 7 96k ohm 10k ohm 10k ohm 10k ohm 10k ohm 10pF 36pF 50k ohm 15k ohm 30k ohm 7 67k ohm 10k ohm 30k ohm 15k ohm 20uA 21k ohm 29k ohm 24k ohm 24k ohm 65uA 20pF 180k ohm 20pF 180k ohm 180k ohm 40pF 40pF I I I I SW3 SW2 SW1 1k ohm LCD 3 STATE DET 20pF TEO TEN ...

Page 28: ...52 Remote sensor Vcc Vcc Comp AGC AMP PD Detector BPF fo trimming circuit I V conversion magnetic shield Rout GND 22k 1 Block diagram 8 7 6 5 4 3 2 1 V B OUTPUT B INPUT B INPUT A INPUT A INPUT A OUTPUT V NJM4565M WE IC581 Ope amp ...

Page 29: ...Printed in Japan 200102 V VICTOR COMPANY OF JAPAN LIMITED MOBILE ELECTRONICS DIVISION PERSONAL MOBILE NETWORK BUSINESS UNIT 10 1 1Chome Ohwatari machi Maebashi city Japan No 49611 KD S7R ...

Page 30: ...ETECTER TU1 TUNER PACK LCD1 IC601 LCD DRIVER KEY MATRIX S601 S621 COM1 3 S1 S52 LCD_CE LCD_CLK LCD_SO LCD_CE LCD_CLK LCD_SO KEY0 2 KEY0 2 VA VB VC VE VF MD LD SEL TEB RF RFRP FE SBAD TE RFGO FEED SPINDLE FOCUS TRACKING LOADING L CH R CH CD_L CD_R LM0 LM1 BUS0 3 BUCK CCE RST REST SW1 4 IC701 CPU J1 L CH R CH DATA CLK MUX OUTFL OUTFR OUTRL OUTRR LINE OUTPUT REAR L REAR R ...

Page 31: ... M E M O KD S7R 2 2 ...

Page 32: ...F G 1 2 3 4 5 2 3 KD S7R Standard schematic diagrams Main amp section REAR SIGNAL TUNER SIGNAL CD SIGNAL FRONT SIGNAL Parts are safety assurance parts When replacing those parts make sure to use the specified one ...

Page 33: ...H A B C D E F G 1 2 3 4 5 KD S7R KD S7R 2 4 CD servo section DIGITAL SIGNAL ANALOG SIGNAL ...

Page 34: ...A B C D E F G 1 2 3 4 5 2 5 KD S7R LCD key control section ...

Page 35: ...H A B C D E F G 1 2 3 4 5 KD S7R KD S7R 2 6 Printed circuit boards Main board Switch board Forward side Switch board Reverse side ...

Page 36: ...re not available as service parts Contents Exploded view of general assembly and parts list CD mechanism assembly and parts list Electrical parts list Packing materials and accessories parts list KD S7R 3 2 3 4 3 7 3 12 Area suffix E Continental Europe EX Central Europe ...

Page 37: ...iew of general assembly and parts list Block No M M M 1 2 1 6 6 6 18 26 27 22 23 28 25 20 24 21 19 35 39 34 38 36 37 30 30 11 14 15 29 13 12 16 7 3 10 7 9 9 32 43 42 41 33 4 5 31 40 44 45 46 8 8 8 17 Front board Main board ...

Page 38: ...2 PRESET BUTTON 1 1 6 TP RDS PTY 20 FSXP3053 002 POWER BUTTON 1 21 FSXP3054 002 EJECT BUTTON 1 22 FSXP2034 034 D FUNC BUTTON 1 CD FM AM 23 FSXP4005 019 BBE BUTTON 1 SCM 24 FSXP3068 002 PUSH BUTTON 1 DISP MO RND 25 FSXP2044 001 COMBO BUTTON 1 26 FSXP3055 001 DETACH BUTTON 1 27 FSKW3002 012 COMP SPRING 1 FOR DETACH BUTT 28 FSJK3026 001 CD LENS 1 29 FSJC1043 002 REAR COVER 1 30 VKZ4777 001 MINI SCREW...

Page 39: ...5 7 91 4 3 7 6 19 18 105 48 43 50 41 42 103 49 49 d 56 107 131 36 107 107 d 38 32 33 130 106 29 108 106 135 104 107 40 63 39 a 51 52 109 132 86 113 113 134 80 117 92 84 c 79 88 93 22 22 89 62 81 82 116 102 101 108 100 133 57 Grease G 31SA G 31SA Bottom side RX 405 CD mechanism assembly and parts list Block No M M M 2 TN CCD1001Z 136J ...

Page 40: ...0310149T REAR DAM BKT Z 1 22 30310151T HUNG UP SP FZ 2 23 30310129T HUNG UP SP R 2 29 30300510T PU GEAR B 1 32 30310544T F M BASE Z 1 33 30310547T FD GR BLK Z 1 36 30310546T PU GUIDE Z 1 38 30310533T THRUST SPR M 1 39 30310548T PU M NUT Z 1 40 30310512T NUT PUSH SPR PL 1 41 30310558T CLP ARM Z 1 42 30310514T CLP ARM SPRING 1 43 30310552T CLAMPER Z 1 48 30310557T CLAMPER PLATE Z 1 49 30310524T DAMP...

Page 41: ...00 9C0620503T C B TAP SCREW 2 M2X5 101 9C2020401T C SCREW TS G 5 M2X4 102 9C4320403T C B TAP SCREW 4 M2X4 103 9C0117223T SCREW 2 M1 7X2 2 104 9C0917703T C TAP SCREW S3 1 M1 7X7 105 9C0320201T C TAP SCREW S3 1 M2X2 106 9C4920013T C TAP SCREW S3 2 M2X10 107 9C4920603T C TAP SCREW B3 4 M2X6 108 9P0220031T TAMS SCREW 2 M2X3 109 9C0314203T C TAP SCREW 1 M1 4X2 110 9C0420253 C TAP SCREW 1 M2X2 5 113 9W0...

Page 42: ...NCB21HK 103X C CAPACITOR C 503 QEKJ1CM 226Z E CAPACITOR 22MF 20 16V C 521 NCB21HK 103X C CAPACITOR C 522 NCB21HK 103X C CAPACITOR C 523 NCB21EK 103X C CAPACITOR C 524 QEKJ1AM 107Z E CAPACITOR 100MF 20 10V C 525 NCB21HK 103X C CAPACITOR C 526 QEKJ0JM 107Z E CAPACITOR 100MF 20 6 3V C 527 QEKJ0JM 107Z E CAPACITOR 100MF 20 6 3V C 528 NCS21HJ 101X C CAPACITOR C 529 NCB21HK 103X C CAPACITOR C 530 QEKJ0J...

Page 43: ...ISTOR Q 3 UN2111 X TRANSISTOR Q 4 2SB709A R X TRANSISTOR Q 5 2SB815 7 X TRANSISTOR Q 7 UN2211 X TRANSISTOR Q 31 2SD601A R X TRANSISTOR Q 32 2SD601A R X TRANSISTOR Q 41 2SD601A R X TRANSISTOR Q 42 2SC3661 X TRANSISTOR Q 43 UN2211 X TRANSISTOR Q 51 2SD601A R X TRANSISTOR Q 52 2SD601A R X TRANSISTOR Q 53 UN2211 X TRANSISTOR Q 161 2SD601A R X TRANSISTOR Q 162 UN2111 X TRANSISTOR Q 174 UN2111 X TRANSIS...

Page 44: ...J 123X MG RESISTOR R 586 NRSA02J 152X MG RESISTOR R 591 NRSA02J 243X MG RESISTOR R 592 NRSA02J 223X MG RESISTOR R 593 NRSA02J 223X MG RESISTOR R 594 NRSA02J 333X MG RESISTOR R 595 NRSA02J 123X MG RESISTOR R 596 NRSA02J 152X MG RESISTOR R 701 NRSA02J 102X MG RESISTOR R 702 NRSA02J 122X MG RESISTOR R 703 NRSA02J 222X MG RESISTOR R 704 NRSA02J 222X MG RESISTOR R 705 NRSA02J 222X MG RESISTOR R 706 NRS...

Page 45: ...RSA02J 100X MG RESISTOR R 976 NRSA02J 473X MG RESISTOR R 977 NRSA02J 273X MG RESISTOR R 978 NRSA02J 123X MG RESISTOR TU 1 QAU0156 002 TUNER X 71 QAX0263 001Z CRYSTAL X 541 QAX0413 001Z CRYSTAL X 701 QAX0406 002Z CRYSTAL Electrical parts list Main board Block No 01 ...

Page 46: ...1X MG RESISTOR R 615 NRSA02J 122X MG RESISTOR R 616 NRSA02J 182X MG RESISTOR R 617 NRSA02J 272X MG RESISTOR R 618 NRSA02J 392X MG RESISTOR R 631 NRSA02J 821X MG RESISTOR R 632 NRSA02J 271X MG RESISTOR R 633 NRSA02J 271X MG RESISTOR R 634 NRSA02J 271X MG RESISTOR R 635 NRSA02J 271X MG RESISTOR R 636 NRSA02J 271X MG RESISTOR R 637 NRSA02J 271X MG RESISTOR R 638 NRSA02J 271X MG RESISTOR R 639 NRSA02J...

Page 47: ...KD S7R 3 12 Packing materials and accessories parts list Block No M M M 3 Block No M M M 4 A2 A4 A14 A12 A13 KIT A6 A10 P1 P2 P3 P4 P7 P6 P5 P2 A11 P4 A1 A5 E version only ...

Page 48: ...scription Block No M4MM A 1 GET0042 002A INST BOOK E 1 FIN ITA SPA SWE A 2 GET0042 001A INST BOOK 1 ENG FRE GER DUT A 3 GET0042 003A INSTALL MANUAL 1 ENG GER FRE GET0042 004A INSTALL MANUAL 1 DUT SPA ITA GET0042 005A INSTALL MANUAL E 1 SWE FIN A 4 BT 54013 1 WARRANTY CARD 1 A 5 LV40978 001A CAUTION SHEET 1 A 6 VKZ4027 202 PLUG NUT 1 A 7 VKH4871 001SS MOUNT BOLT 1 A 8 VKZ4328 001 LOCK NUT 1 FOR M5 ...

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