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JVC KS-LX200R Service Manual

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SERVICE MANUAL
CASSETTE RECEIVER
KS-LX200R
S E L
Contents
Safety precaution
Disassembly method
Adjustment method
Description of major ICs
This service manual is printed on 100% recycled paper.
COPYRIGHT
7
8
9
10
1 1
1 2
KS-LX200R
2000 VICTOR COMPANY OF JAPAN, LTD.
Area Suffix
E
Continental Europe
EX
O F F
1-2
1-3
1-13
1-17
KS-LX200R
KS-LX200R
Central Europe
No.49573
1-1
Oct. 2000

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Summary of Contents for JVC KS-LX200R

  • Page 1 KS-LX200R KS-LX200R SERVICE MANUAL CASSETTE RECEIVER KS-LX200R Area Suffix Continental Europe Central Europe S E L O F F KS-LX200R Contents Safety precaution Disassembly method Adjustment method 1-13 Description of major ICs 1-17 This service manual is printed on 100% recycled paper.

  • Page 2: Description Of Major Ics

    KS-LX200R Description of major ICs BA4905-V3 (IC961) : Regulator 1.Pin layout 2.Block diagram REGULATOR RESET RESET COMP VDD 5.7V CD 8V AUDIO 9V CTRL ILM 10V 3.Pin function Pin no. Symbol Function RESET If VDD voltage becomes 4V or less.RESET output becomes low level.
  • Page 3 KS-LX200R CXA2510AQ (IC401) : Head AMP / Dolby 1. Pin layout & Block diagram 20 MSMODE PBFB2 31 120 /70 OFF/ B / C PBRIN 32 19 DRSW MS MODE NR BIAS PBREF2 33 18 TAPESW TAPE / AUX 17 INSW...
  • Page 4 KS-LX200R Symbol Functions NRSW Dolby NR control L:NR OFF H:NR ON INSW Line amplifier input select control L:TAPE IN H:AUX IN METAL Playback equalizer amplifier control L:120us H:70us DRSW Head select control L:FORWARD H:REVERSE FF/REW Music sensor mode control Low(open):G1...
  • Page 5 KS-LX200R KA3031 (IC831) : Motor driver 1. Pin layout 2. Block diagram IN1.1 REG50 REG050 REF SVCC RES50 OPIN(+) OPIN(-) OPOUT PVCC2 DO1.1 DO1.2 IN1.2 DO2.1 ALL MUTE T.S.D OUT1 DO2.2 O.V.P 2.5V IN2.1 PGND3 IN2.2 DO3.1 OUT2 DO3.2 IN3.1 PGND2 IN3.2...
  • Page 6 KS-LX200R 3. Pin function Pin No. Symbol Function Pin No. Symbol Function IN1.2 CH 1 op-amp input (-) DO6.1 CH 6 drive outout OUT1 CH 1 op-amp output DO5.2 CH 5 drive output IN2.1 CH 2 op-amp input (+) DO5.1 CH 5 drive output IN2.2...
  • Page 7 KS-LX200R UPD784215AGC113 (IC701) : UNIT CPU 1.Pin layout 2.Pin function Pin No. Symbol Function Output for input signal level switching for MS. FF/REW Dolby on "H" output. DOLBY MS output. MS-OUT Fwd, REV direction switch signal input. HOLD Non connect TRAYCNT Tray light control signal output.
  • Page 8 KS-LX200R Pin No. Symbol Function Door motor negative signal output. Door motor positive signal output. Stereo signal input. LOCAL Non connect. Manual ON/OFF select signal output. MONO CA-SW1 DOOR/TRAY open/close detect switch signal input. DOOR/TRAY open/close detect switch signal input.
  • Page 9 KS-LX200R BD3860K (IC911) : E. volume 1. Pin layout 2. Block diagram GND FIL VCC SEL1 VIN1 LOUD1 HF1 LF1 DET1 VCA1 MIX1 BBOUT1 TIN1 TNF1 BNF1 BOUT1 POWER FADER SUPPLY MAIN INPUT CH1 FRONT OUTF1 TREBLE BASS VOLUME GAIN...
  • Page 10 KS-LX200R LA3460M-X (IC31) : FM noise canceller & Stereo MPX demodulator 1. Pin layout 2. Block diagram DRIVER VCO STOP PACAN SCHMIT SEPARATION ADJ. ANTI-BRIDGE MAIN GATE DECODER TRIG CONTROL 3. Pin function Function Description Noise sense Noise sensitivity adjustment...
  • Page 11 KS-LX200R LA4743B (IC941) :Power amp 1.Terminal layout 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 2.Block diagram 3.Pin function No. Symbol Function No. Symbol...
  • Page 12 KS-LX200R LC75873NW (IC601) : LCD driver 1.Block diagram VDD1 COMMOM SEGMENT DRIVER DRIVER VDD2 CLOCK SHIFT REGISTER GENERATOR ADDRESS DETECTOR 2.Pin functions Pin No. Symbol Description 1~66 S3~S68 Segment Output. 67~69 COM1~3 Common Driver Output. Power Supply Connection. VDD1 Used for applying the LCD drive 2/3 bias voltage externally.
  • Page 13 KS-LX200R BA3220FV-X (IC301) : Driver 1. Pin layout & Block diagram LGND OUTL OUTR RGND CR - CR + REFL REFR FILTER 2. Pin function Symbol Function Powe supply terminal for amp. power supply terminal. input terminal. Negative feedback terminal.
  • Page 14 KS-LX200R BR24C32F-X (IC703) : EEPROM 1. Pin layout 2. Block diagram A0 1 8 Vcc 32k bit EEPROM ARRAY 8bit 12bit SLAVE/WORD ADDERESS DATA A1 2 7 WP 12bit ADDRESS REGISTER DECODER REGISTER START STOP A2 3 6 SCL CONTROL LOGIC GND 4 HIGH VOLTAGE GEN.
  • Page 15 KS-LX200R SAA6579T-X (IC51) : RDS demodulator 1. Pin layout 2. Pin function Symbol Function QUAL Quality indication output RDDA RDS data output Vref Reference voltage output (0.5VDDA) Multiplex signal input VDDA +5V supply voltage for analog part VSSA Ground for analog part (0V)
  • Page 16 KS-LX200R HD74HC126FP-X (IC771) : Buffer 1. Pin layout 2. Pin function Inputs Outputs 3. Block diagram Output Input Output Sample as Load Circuit 1 Output Sample as Load Circuit 1 Output Sample as Load Circuit 1 RPM6938-SV4 (IC602) : Remote control receiver...
  • Page 17 KS-LX200R M5282FP-XE (IC321) : E. volume 1. Pin layout 2. Block diagram 3. Pin function Symbol Function Vcc/2 Vcc/2 output for microphone amp. Amp+IN Microphone amp. positive input terminal. Amp-IN Microphone amp. negative input terminal. Amp OUT Microphone amp. output terminal.
  • Page 18 KS-LX200R Block diagram FMDET.ADJ IC301 LOUTFL L-ch IC911 INFL IC31 SEPA.ADJ Lch LINE LOUTRR TUNER PACK R-ch E.VOL. INRL AMP. FRONTL FM/AM STANDBY,TAPEEND FRONTR Lch,Rch S.METER IC401 INFR ROUTFL IC401 MSOUT SD/ST Rch LINE IC51 INRR ROUTRR HEAD AMP NRSW...
  • Page 19 KS-LX200R KS-LX200R Standard schematic diagrams Main amp. section R162 C163 D161 1SS355 0.047 IC941 LA4743B C161 Q161 2SD601A 1/50 R165 R303 QAU0157-002 IC301 BA3220FV C307 100/10 C305 4.7/25 C308 4.7/25 R301 C301 C309 4.7/25 C120 47/16 4.7/25 C141 UN2211 1/50...
  • Page 20 KS-LX200R Mecha. control section Q401 CP401 2SA1706/ST/-T QGA2001F1-07 Q402 DTC114EKA R406 300K C406 0.01 CP402 QGB1214K1-10S R420 C405 22/16 IC401 C416 IC402 R419 LB1641 1.2M C409 C418 0.01 0.01 R410 C419 300K Q403 D403 DTC114EKA MA3075( M) CP403 QGB1214K1-18S TAPE REC SIGNAL...
  • Page 21 KS-LX200R KS-LX200R LCD & Key control section R641 3.9k R640 2.7k R639 1.8k R638 1.2k R637 R636 CN631 QGF0501F1-06X R651 R647 R646 R645 R644 R643 R642 1.8k R635 1.2k R634 3.9K 2.7k QNZ0494-001 IC603 RPM6938-V4 CN601 QGF0501F1-16X D626 RESET R629...