JVC KS-LH60R Service Manual
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JVC KS-LH60R Service Manual

JVC KS-LH60R Service Manual

Cassette receiver
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SERVICE MANUAL
2003
6
49855
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
5
TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
6
DESCRIPTION OF MAJOR ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED
CASSETTE RECEIVER
KS-LH60R
ATT
SOUND
U
R
SOURCE
F
D
VOL
VOL

TABLE OF CONTENTS

Area Suffix
E ----------- Continental Europe
No.49855
2003/6

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Summary of Contents for JVC KS-LH60R

  • Page 1: Table Of Contents

    SERVICE MANUAL CASSETTE RECEIVER 49855 2003 KS-LH60R SOUND SOURCE Area Suffix E ----------- Continental Europe TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 SPECIFICATION AUDIO AMPLIFIER SECTION Maximum Power Output: Front 50 W per channel Rear 50 W per channel 19 W per channel into 4 Ω 40 Hz to 20 000 Hz Continuous Power Output Front (RMS): at no more than 0.8% total harmonic distortion. 19 W per channel into 4 Ω...

  • Page 3: Precaution

    SECTION 1 PRECAUTION Safety Precautions Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system. (No.49855)1-3...

  • Page 4: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SEVICE INSTRUCTIONS. 1-4 (No.49855)

  • Page 5: Disassembly

    SECTION 3 DISASSEMBLY Main body 3.1.1 Removing the front panel assembly (See Fig.1) (1) Press the release button and remove the front panel as- sembly. Front panel assembly Release button Fig.1 3.1.2 Removing the bottom cover (See Fig.2) • Prior to performing the following procedures, remove the front panel assembly.
  • Page 6 3.1.4 Removing the heat sink (See Fig.5) • Prior to performing the following procedure, remove the front panel assembly. (1) Remove the two screws C and screw D attaching the heat sink on the left side of the main body, and remove the heat sink.
  • Page 7 3.1.7 Removing the cassette mechanism assembly (See Fig.8) • Prior to performing the following procedures, remove the front Cassette mechanism assembly panel assembly, bottom cover, front chassis assembly, heat sink, rear panel and main board. (1) Disconnect the wire from the connector CN402 on the mecha board.
  • Page 8 3.1.9 Removing the front board (See Figs.10 to 12) • Prior to performing the following procedures, remove the front panel assembly. (1) Remove the four screws L attaching the rear cover on the back side of the front panel assembly. (See Fig.10.) (2) Release the nine joints g, the front panel assembly and rear cover become separate.
  • Page 9 Cassette mechanism assembly REFERENCE: Prior to performing the following procedures, turn the mode gear on the bottom of the body until the respective part comes to the EJECT position (Refer to Fig.1). Mode gear Fig.1 3.2.1 Removing the cassette guide (See Fig.2) (1) Turn the mode gear to set to RVS play or subsequent Cassette guide...
  • Page 10 3.2.3 Removing the cassette hanger assembly / cassette holder (See Fig.4 to 7) (1) Check the mode is set to EJECT. Push down the front part Cassette holder assembly of the cassette holder and move in the direction of the ar- row to release the joint c.
  • Page 11 3.2.4 Removing the side bracket assembly Side bracket assembly (See Fig.8 to 10) Joint i (1) Remove the screw A attaching the side bracket assembly. (2) Detach the front side of the side bracket assembly upward and pull out forward to release the joint i and j in the rear. Joint j CAUTION: When reassembling, make sure that the boss k of the...
  • Page 12 3.2.5 Removing the pinch arm (F) assembly (See Fig.11 and 12) (1) Remove the polywasher and pull out the pinch arm (F) as- sembly. (2) Remove the compulsion spring. 3.2.6 Removing the pinch arm (R) assembly (See Fig.11 and 12) (1) Remove the polywasher and pull out the pinch arm (R) as- sembly.
  • Page 13 3.2.8 Removing the head / tape guide Flywheel assembly (F) Belt (See Fig.16 and 17) REFERENCE: It is not necessary to remove the slide chassis assembly. (1) Remove the band attaching the wire to the head. (2) Remove the two screws B, the head and the head support spring.
  • Page 14 3.2.10 Disassembling the flywheel assembly (F) FFC pad (See Fig.19 and 20) (1) Push and turn counterclockwise the spring holder (F) to re- lease the three joints p on the bottom of the flywheel. (2) The spring holder (F), the TU spring and the friction gear play come off.
  • Page 15 3.2.13 Removing the gear base arm / gear base link assembly (See Fig.23 to 25) (1) Move the gear base arm in the direction of the arrow. Gear base arm (2) Insert a slotted screwdriver to the gear base spring under Joint t Joints s the gear base arm, and release the gear base arm upward...
  • Page 16 3.2.15 Removing the mode gear Mode gear Mode switch actuator (See Fig.26 and 29) (1) Remove the polywasher on the bottom and pull out the mode gear. 3.2.16 Removing the mode switch actuator (See Fig.26, 27 and 29) (1) Pull out the mode switch actuator at the bottom. REFERENCE: Polywasher When reattaching the mode switch actuator to the main...
  • Page 17 3.2.19 Removing the gear base assembly / take up gear / reflector gear (See Fig.30 to 32) (1) Push in the pin d’ of the gear base assembly on the upper Slot e' side of the body and move the reflector gear toward the bottom, then pull out.
  • Page 18 3.2.21 Removing the side bracket assembly Side bracket assembly (See Fig.33 to 37) Boss g' (1) Remove the eject cam plate spring. (2) Push the joint f’ through the slot to remove the load rack downward. (3) Move the eject cam limiter in the direction of the arrow to release it from the boss g’...
  • Page 19 3.2.22 Removing the main motor assembly / sub motor assembly (See Fig.38 to 40) (1) Remove the belt at the bottom. Main motor (2) Remove the polywasher and pull out the mode gear. assembly (3) Pull out the reduction gear (B). Reduction gear (B) (4) Remove the polywasher and pull out the reduction gear Belt...

  • Page 20: Adjustment

    SECTION 4 ADJUSTMENT Adjustment method Test instruments required for adjustment Standard volume position (1) Digital oscilloscope (100MHz) Balance and Bass, Treble volume, Fader : Center (Indication "0") (2) Frequency counter meter Loudness, Dolby NR, Sound, Cruise : Off (3) Electric voltmeter Volume position is about 2V at speaker output with following (4) Wow &...
  • Page 21 Information for using a car audio service jig (1) We're advancing efforts to make our extension cords common for all car audio products. Please use this type of extension cord as follows. (2) As a U-shape type top cover is employed, this type of extension cord is needed to check operation of the mechanism assembly after disassembly.
  • Page 22 Arrangement of adjusting & test points Cassette mechanism (Surface) Motor assembly Tape speed adjust Azimuth screw A (Forward) Playback head Azimuth screw B (Reverse) Head section view Playback head Azimuth screw B Azimuth screw A (Reverse) (Forward) 1-22 (No.49855)
  • Page 23 Item Conditions Adjustment and Confirmation methods S.Values Adjust 1. Head azi- Test tape: Head height adjustment muth adjust- SCC-1659 Adjust the azimuth directly. When you adjust the height A line ment VT703 (10kHz) using a mirror tape, remove the cassette housing from the mechanism chassis.

  • Page 24: Trouble Shooting

    SECTION 5 TROUBLE SHOOTING This service manual does not describe TROUBLE SHOOTING. 1-24 (No.49855)

  • Page 25: Description Of Major Ics

    SECTION 6 DESCRIPTION OF MAJOR ICs BR24L16F-W-X (IC771) : EEPROM • Pin layout • Pin function Symbol Function Power supply. A0,A1,A2 No use connect to GND. Serial clock input. I/O Serial data I/O of slave and ward address. Write protect terminal. •...
  • Page 26 CXA2560Q (IC401) : Dolby B type noise reduction system with play back equalizer amp. • Pin layout & block diagram 7k/12k PBFB2 MSMODE 100k OFF/B PBRIN2 DRSW 300k MS MODE BIAS PBGND TAPESW MUTE PBFIN2 MUTESW TAPE EQ NRSW NR MODE FWD/RVS PBREF MS ON/...
  • Page 27 HA13164A (IC901) : 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 28 LC75873NW (IC601):LCD Driver • Pin layout • Block diagram VDD1 COMON SEGMENT DRIVER DRIVER VDD2 CLOCK SHIFT REGISTOR GENERATOR ADDRESS DETECTOR • Pin function Pin No. Pin name Description 79,80 S1/P1 to S4/P4 O Segment outouts for displaying the display data transferred by serial data input. 1,2,3 S5 to S68 The S1/P1 to S4/P4 pins can be used as generalpurpose output ports under serial data control.
  • Page 29 SAA6579T-X (IC71):RDS detecter • Pin layout QUAL DATA Vref OSCO OSCI TEST SCOUT MODE • Block diagram ANTI- 57 kHz OSCILLATOR QUALITY BIT RECONSTRUCTION ALIASING BAND PASS GENERATOR FILTER FILTER (8th ORDER) DIVIDER COSTAS LOOP BIPHASE CLOCKED DIFFERENTIAL SYMBOL VARIABLE AND COMPARATOR DECODER FIXED DIVIDER...
  • Page 30 TB2118F-X (IC31) : PLL • Terminal Layout • Block diagram Constant power supply voltage Buff. ON/OFF AM CP. Phase OSC circuit Reference Counter Comparator switch FM VCO 4-bit Prescaler Swallow counter 12-bit AMVCO Programmable counter 20-bit BINARY COUNTER Resistor 1 22-bit Resistor 2 40bit shift register...
  • Page 31 TEA6320T-X (IC161) : E.volume • Pin layout OUTRR OUTLR OUTLF OUTRF Vref MUTE CD-CH TAPE TUNER • Block diagram VOLUME 2 MUTE 0 to 55 dB FUNCTION BALANCE ZERO CROSS FENDER REAR POWER DETECTOR SUPPLY VOLUME 1 BASS TREBLE +20 to -31 dB VOLUME 2 LEFT LEFT...
  • Page 32 6.10 LA47505 (IC301) : Power amp. • Terminal layout Protective circuit Stand by Switch Ripple Mute Filter circuit protective circuit Muting & On Time Control Circuit 1-32 (No.49855)
  • Page 33 • 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 34 6.12 UPD784215AGC208 (IC701) : CPU • Pin layout • Pin function Pin No Symbol Function TAPE IN Cassette tape inside signal H:Inside L:Outside STAND BY Stand-by position detection signal input H:Loading L:Eject side 3 to 8 Not use Micon power supply RESET System reset Steering...
  • Page 35 Pin No Symbol Function 51,52 Not use SD/ST Station detector or stereo indicator input ; H means a station is there. L means the program is stereo. Not use MONO Monaural selection output ; H means monaural 56 to 60 Not use DETACH Detach detect input ;...
  • Page 36 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY MOBILE ENTERTAINMENT CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.49855) Printed in Japan...

  • Page 37: Schematic Diagrams

    KS-LH60R SCHEMATIC DIAGRAMS CASSETTE RECEIVER KS-LH60R CD-ROM No.SML200306 SOUND SOURCE Area Suffix E ----------- Continental Europe Contents Block diagram Standard schematic diagrams Printed circuit boards 2-5 to 7 No.49855SCH COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD. 2003/06...

  • Page 38: Safety Precaution

    KS-LH60R Safety precaution Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system.

  • Page 39: Block Diagram

    KS-LH60R Block diagram LINE OUT J321 TU.L FRONTL TU.R FRONTR FM/AM REARL TUNER REARR IC161 IC301 E.VOLUME POWER AMP TAPE.L OUTLF MONO PHOTO OUTRF TAPE.R SD/ST PHOTO REEL OUTLR SUBMO+ SEEK/STOP IC402 OUTRR REEL SUBMO - AFCK MOTOR DRIVER MOTOR...

  • Page 40: Standard Schematic Diagrams

    KS-LH60R KS-LH60R Standard schematic diagrams Main amp section RB160M-30-X R243 R249 D242 C243 R242 0.047 180k R245 R240 C241 R247 1/50 C244 R244 R248 IC301 R241 0.22 C242 LA47505 22/16 Q241 2SD601A/R/-X QAU0292-001 LEVEL R301 C308 4.7u 0.22/50 QNB0100-002 1/50 9.1k...
  • Page 41 KS-LH60R LCD & Key control section LCD1 IC602 GP1UM261XK CN601 ACC5V R660 QNZ0006-001 LCD1 REMOCON QLD0257-001 EN601 R661 QSW0863-002 ENC1 ENC2 LCDCE R662 3.3k R663 3.3k LCDDA ENC2 R654 R653 3.3k LCDCL R664 ENC1 KEY2 R652 KEY1 KEY0 D660 R651...
  • Page 42 KS-LH60R KS-LH60R Head amp section Q403 2SB1322/RS/-T R401 Q402 CN403 UN2211-X QGF1219F1-10S 0.015 C411 R418 22/16 C409 IC401 CXA2560Q R416 1.5M IC402 LB1641 C422 CN402 VMP3501-001 0.015 C410 C425 0.01 C424 CN401 QGB1214K1-18S TAPE signal Main amp section CP401...
  • Page 43 KS-LH60R Printed circuit boards Main board Forward side IC901 J321 Q321 Q351 Q341 Q331 J801 L901 CP401 CN901 D901 R901 C308 C318 C319 C309 IC161 IC31 R706 R760 R762 IC701 C705 X701 Q891 CN702 X702 R736 R735 IC771 S701 R733...
  • Page 44 KS-LH60R Main board Reverse side CN901 J321 IC901 R902 D901 CP401 IC301 C326 C325 R901 Q701 R161 R163 R164 R162 C308 C318 Q976 R302 Q977 C309 C319 R312 C243 R307 Q241 R306 R724 R726 R728 R717 R241 R721 X701 R745...
  • Page 45 KS-LH60R Front board Forward side LCD1 S614 IC602 D620 D602 D603 D605 R614 S605 R604 D604 D601 D619 R602 R603 S604 S615 S613 D606 D616 D617 D610 D611 D613 D612 S603 D609 S608 D615 S609 S610 S611 S601 S612 D614...
  • Page 46 KS-LH60R VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.49855SCH) 2003/06...

  • Page 47: Parts List

    PARTS LIST [ KS-LH60R ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix E------------ Continental Europe - Contents - 3- 2 Exploded view of general assembly and parts list (Block No.M1) 3- 4 Cassette mechanism assembly and parts list (Block No.MP)
  • Page 48 Exploded view of general assmbly and parts list Block No.
  • Page 49 General assembly  Symbol No. Part No. Part Name Description Local Block No. [M][1][M][M] QYSDSF2606Z SCREW 2.6mm x 6mm  Symbol No. Part No. Part Name Description Local QYSDST2606Z SCREW 2.6mm x 6mm GE40172-002A IC BRACKET GE40124-001A REG BRACKET FSYH4036-050 SPECER FSKS3017-002 LED HOLDER...
  • Page 50 Cassette mechanism assembly and parts list Block No. CDS-802JE3...
  • Page 51 Cassette mechanism  Symbol No. Part No. Part Name Description Local Block No. [M][P][M][M] 2-1821-0040-D2S PSW-S 2.1 (x3)  Symbol No. Part No. Part Name Description Local 2-1711-5040-16S E RING 2-1031-7030-C2S SCREW (x2) X-0802-1009S MAIN CHASSIS AS X-0802-1002S SLIDE CHASSIS A X-0802-1003S SIDE BKT ASSY X-0802-1004S...
  • Page 52 Grease point 1/2 FG-84M MEA-512R MEN-223 SW-902 CFD-409 CFD-250H EP-56 SW-474B...
  • Page 53 Grease point 2/2...

  • Page 54: Electrical Parts List

    Electrical parts list Main board  Symbol No. Part No. Part Name Description Local Block No. [0][1][0][0] D901 1N5401-F64 DIODE  Symbol No. Part No. Part Name Description Local D902 1SS355-X SI DIODE D903 1SS355-X SI DIODE D981 RB160M-30-X SB DIODE IC31 TB2118F-X PLL IC...
  • Page 55  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local C182 QERF1EM-475Z E CAPACITOR 4.7uF 25V M NRS181J-100X MG RESISTOR 10Ω 1/8W J C183 QERF1EM-475Z E CAPACITOR 4.7uF 25V M NRSA63J-471X MG RESISTOR 470Ω...
  • Page 56  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local R717 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J R718 NRSA02J-683X MG RESISTOR 68kΩ 1/10W J BZ841 QAN0023-001Z BUZZER R719 NRSA63J-222X MG RESISTOR 2.2kΩ 1/16W J CN701 QNZ0007-002 CAR CONNECTOR...

  • Page 57: Front Board

     Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local R418 NRSA63J-153X MG RESISTOR 15kΩ 1/16W J R606 NRSA63J-392X MG RESISTOR 3.9kΩ 1/16W J R422 NRSA02J-332X MG RESISTOR 3.3kΩ 1/10W J R607 NRSA63J-821X MG RESISTOR 820Ω...
  • Page 58 Packing materials and accessories parts list Block No. A2 A3 A4 A6 A7 A8 KIT: A10 A11 3-12...
  • Page 59 Packing and accessories Block No. [M][3][M][M]  Symbol No. Part No. Part Name Description Local ENG,GER,FRE,DU GET0127-001A INST BOOK GET0127-002A INST BOOK RUS,SPA,ITA,POL ENG,GER,FRE,DU GET0127-003A INSTALL MANUAL GET0127-004A INSTALL MANUAL RUS,SPA,ITA,POL LV40978-001A CAUTION SHEET BT-54013-6 WARRANTY CARD VND3050-002 IDENTITY CARD VND3046-001 SERIAL TICKET VKZ4027-202...

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