JVC KS-FX8 Service Manual
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JVC KS-FX8 Service Manual

JVC KS-FX8 Service Manual

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3 7 63 1515 0
SERVICE MANUAL
4
2003
49826
TE
L 13942296513
1
Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2
Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
3
Adjustment method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
4
Description of major ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
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CASSETTE RECEIVER
KS-FX8

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COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
http://www.xiaoyu163.com
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Area Suffix
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No.49826
KS-FX8
9 9
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2003/4

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  • Page 1: Table Of Contents

    KS-FX8 3 7 63 1515 0 SERVICE MANUAL CASSETTE RECEIVER 49826 2003 KS-FX8 L 13942296513 Area Suffix UN ----------- Asean TABLE OF CONTENTS Important Safety Precautions ............1-2 Disassembly method .

  • Page 2: Important Safety Precautions

    KS-FX8 SECTION 1 3 7 63 1515 0 Important Safety Precautions 1.1 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.

  • Page 3: Disassembly Method

    KS-FX8 SECTION 2 3 7 63 1515 0 Disassembly method 2.1 Main body 2.1.1 Removing the front panel assembly (See Fig.1) (1) Push the detach button in the lower left part of the front panel assembly and remove the front panel assembly in Front panel assembly the direction of the arrow.

  • Page 4: Http://Www.xiaoyu163.Com

    KS-FX8 2.1.3 emoving the front chassis assembly 3 7 63 1515 0 (See Figs.3 and 4) • Prior to performing the following procedures, remove the front panel assembly and bottom cover. (1) Remove the two screws A on the both sides of the main...

  • Page 5: Cassette Mechanism Assembly 2

    KS-FX8 2.1.6 Removing the main board 3 7 63 1515 0 (See Fig.7) • Prior to performing the following procedures, remove the front panel assembly, bottom cover, front chassis assembly, heat Main board sink and rear panel. (1) Remove the two screws H attaching the main board on the top chassis.
  • Page 6 KS-FX8 2.1.9 Removing the front board 3 7 63 1515 0 (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.
  • Page 7 KS-FX8 2.2 Cassette mechanism assembly 3 7 63 1515 0 • Prior to performing the following procedures, remove the head 2.2.4 Removing the playback head amplifier board, the relay board and the mechanism bracket. (See Fig.2) • Prior to performing the following procedure, remove the direc- 2.2.1 Removing the direction switch board...
  • Page 8 KS-FX8 2.2.6 Removing the cassette hanger / cassette holder 3 7 63 1515 0 Cassette holder (See Fig.3) Return link Joint i • Prior to performing the following procedure, remove the FF / Cassette hanger REW lever assembly. (1) From the rear of the unit, bend the two tabs f outwards and Eject lever disengage the two joints g in the direction of the arrow.
  • Page 9 KS-FX8 2.2.9 Removing the Flywheel (BF) and (BR) assembly 3 7 63 1515 0 2.2.10 Removing the reel base assembly (See Fig.4 and 5) (See Fig.5 and 6) • Prior to performing the following procedure, remove the cas- (1) Raise the part k of the reel base assembly slightly and re- sette hanger / cassette holder.
  • Page 10 KS-FX8 2.2.11 Removing the mute switch board 3 7 63 1515 0 Cassette mechanism assembly (See Fig.8) Rower switch (1) Unsolder the two wires l on the mute switch board on the Soldering l Motor assembly back of the cassette mechanism assembly.

  • Page 11: Adjustment Method

    KS-FX8 SECTION 3 3 7 63 1515 0 Adjustment method Test instruments required for adjustment Standard volume position 1. Digital oscilloscope (100MHz) Balance and Bass, Treble volume, Fader 2. Frequency counter meter : Center (Indication "0") 3. Electric voltmeter Loudness, Dolby NR, Sound, Cruise : Off 4.
  • Page 12 KS-FX8 3 7 63 1515 0 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 13 KS-FX8 3 7 63 1515 0 Arrangement of adjusting & test points Cassette mechanism (Surface) Motor assembly Tape speed adjust Azimuth screw A (Forward) Playback head Azimuth screw B (Reverse) L 13942296513 Head section view Playback head Azimuth screw B...
  • Page 14 KS-FX8 3 7 63 1515 0 Item Conditions Adjustment and Confirmation methods S.Values Adjust Head Head height adjustment Test tape: azimuth Adjust the azimuth directly. When you SCC-1659 adjustment adjust the height using a mirror tape, VT703 (10kHz) remove the cassette housing from the mechanism chassis.

  • Page 15: Description Of Major Ics

    KS-FX8 SECTION 4 3 7 63 1515 0 Description of major ICs 4.1 AN80T05 (IC901) : Regulator • Pin layout & Block diagram Reference Voltage ASO & Peak Current Protection Thermal Protection Drive Drive Drive Drive Drive MODE2 MODE1 L 13942296513 5.6V...
  • Page 16 KS-FX8 4.2 CXA2560Q (IC401) : Dolby B type noise reduction system with play back equalizer amp. 3 7 63 1515 0 • Pin layout & block diagram 7k/12k PBFB2 100k OFF/B PBRIN2 300k MS MODE BIAS PBGND MUTE PBFIN2...
  • Page 17 KS-FX8 4.3 HD74HC126P (IC801) : Buffer 3 7 63 1515 0 • Pin layout • Pin function Input Output ( TOP VIEW ) • Block diagram L 13942296513 u163 (No.49826)1-17 http://www.xiaoyu163.com...
  • Page 18 KS-FX8 4.4 KIA7810PI (IC902) : Regulator 3 7 63 1515 0 • Pin layout 1 2 3 • Block diagram 1 INPUT 3 OUTPUT L 13942296513 2 GND u163 1-18 (No.49826) http://www.xiaoyu163.com...
  • Page 19 KS-FX8 4.5 LB1641 (IC402) : DC Motor driver 3 7 63 1515 0 • Pin layout • Pin function Input Output Mode OUT1 OUT2 Brake CLOCKWISE COUNTER-CLOCKWISE GND OUT1 P1 IN2 VCC1 VCC2 P2 OUT2 Brake 4.6 RPM6938-SV4 (IC602) : Remote control receiver •...
  • Page 20 KS-FX8 4.7 LA47505 (IC301) : Power amp. 3 7 63 1515 0 • Terminal layout Protective circuit Stand by Switch L 13942296513 Ripple Mute Filter circuit protective circuit Muting & On Time Control Circuit u163 1-20 (No.49826) http://www.xiaoyu163.com...
  • Page 21 KS-FX8 • Pin layout 3 7 63 1515 0 • 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...
  • Page 22 KS-FX8 4.8 LC72366-9A81 (IC701) : System CPU 3 7 63 1515 0 • Pin layout • Pin function Pin No. Symbol Function Crystal oscillator input port TEST2 Connect to GND J-BUS SI Data input for J-BUS information J-BUS SO...
  • Page 23 KS-FX8 3 7 63 1515 0 Pin No. Symbol Function Non connection Non connection MOTOR Main motor output H:Transport L: Stop SUBMO+ Sub-motor output(+), Loading direction to transport output SUBMO- Sub-motor output(-), Eject direction to transport output BEEP Non connection...
  • Page 24 KS-FX8 4.9 LC75873NW (IC601) : LCD Driver 3 7 63 1515 0 • Pin layout • Block diagram VDD1 COMON SEGMENT DRIVER DRIVER VDD2 CLOCK SHIFT REGISTOR GENERATOR ADDRESS DETECTOR L 13942296513 • Pin function Pin No. Pin name...
  • Page 25 KS-FX8 4.10 TEA6320T-X (IC161) : E.volume 3 7 63 1515 0 • 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...
  • Page 26 KS-FX8 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY MOBILE ENTERTAINMENT CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.49826) Printed in Japan http://www.xiaoyu163.com...

  • Page 27: Schematic Diagrams

    KS-FX8 3 7 63 1515 0 SCHEMATIC DIAGRAMS CASSETTE RECEIVER KS-FX8 CD-ROM No.SML200304 L 13942296513 Area Suffix UN ----------------------------Asean Contents Block diagram Standard schematic diagrams Printed circuit boards 2-5 to 7 u163 No.49826SCH COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD.
  • Page 28 KS-FX8 3 7 63 1515 0 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. L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 29: Block Diagram

    KS-FX8 3 7 6 3 1 5 1 5 0 Block diagram LINE OUT CJ321 TU.L FRONT LEFT TU.R FRONT RIGHT FM/AM REAR LEFT TUNER REAR RIGHT IC161 IC301 E.VOLUME POWER AMP TAPE.L OUTLF MONO PHOTO OUTRF TAPE.R SD/ST...
  • Page 30 KS-FX8 KS-FX8 3 7 6 3 1 5 1 5 0 Standard schematic diagrams Main amp section QNN0489-001 CJ321 IC301 LA47505 QAU0257-001 C362 R353 R354 0.022 R343 R344 C361 A.GND R333 R334 0.022 2.7k QNB0100-002 1/50 EVOLCLK R323 R324...
  • Page 31 KS-FX8 3 7 6 3 1 5 1 5 0 LCD & Key control section IC602 IC601 RPM6938-SV4 LC75873NW CN601 ACC5V R660 QNZ0006-001 LCD1 REMOCON QLD0220-001 EN601 R661 JOG-1 QSW0976-001 C606 JOG-0 4.7/6.3 1 3 9 4 2 2 9 6 5 1 3...
  • Page 32 KS-FX8 KS-FX8 3 7 6 3 1 5 1 5 0 Head amp section Q403 2SB1322/RS/-T R401 Q402 UN2211-X CN403 QGF1219F1-10S 0.015 C411 R418 22/16 1 3 9 4 2 2 9 6 5 1 3 C409 IC401 CXA2560Q R416 1.5M...
  • Page 33 KS-FX8 3 7 63 1515 0 Printed circuit boards Main board Forward side C901 IC901 B904 CJ321 B305 B304 B905 L901 C362 C361 R343 CP801 CP981 B903 C314 B901 D901 C315 R353 C906 CP701 B301 C905 R333 C914 B902...
  • Page 34 KS-FX8 3 7 63 1515 0 Main board Reverse side IC901 CJ321 L901 R324 C362 C361 D901 CP801 CP981 C315 CP701 C316 C914 Q321 C904 D321 C317 Q351 D341 Q341 C907 C905 C162 C163 C181 R164 R161 R162 R163...
  • Page 35 KS-FX8 3 7 63 1515 0 Front board Forward side LCD1 S614 IC602 D620 D602 D603 D605 R614 S605 R604 D604 D619 D601 R603 R602 S604 S615 S613 D606 D616 D617 D610 D611 D613 D612 S603 D609 S608 D615...
  • Page 36 KS-FX8 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.49826SCH) 2003/04 http://www.xiaoyu163.com...

  • Page 37: Parts List

    KS-FX8 3 7 63 1515 0 PARTS LIST [ KS-FX8 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix UN ----------------------------Asean L 13942296513 - Contents - Exploded view of general assembly and parts list (Block No.M1) Cassette mechanism assembly and parts list (Block No.MP)
  • Page 38 KS-FX8 3 7 63 1515 0 Exploded view of general assmbly and parts list Block No. L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 39 KS-FX8 3 7 63 1515 0 General assembly  Symbol No. Part No. Part Name Description Local Block No. [M][1][M][M] QYSDST2606Z SCREW 2.6mm x 6mm  Symbol No. Part No. Part Name Description Local QYSDST2606Z SCREW 2.6mm x 6mm(x2)
  • Page 40 KS-FX8 3 7 63 1515 0 Cassette mechanism assembly and parts list list Block No. CDS-802JE1 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 41 KS-FX8 3 7 63 1515 0 Cassette mechanism  Symbol No. Part No. Part Name Description Local Block No. [M][P][M][M] 2-13S2-0025-P2S +PLAIN SCR M2 (x2)  Symbol No. Part No. Part Name Description Local 2-1112-6035-C2S +PLAIN SCR M2.6 2-1816-0032-E8S...
  • Page 42 KS-FX8 3 7 63 1515 0 Grease point 1/2 FG-84M MEA-512R MEN-223 SW-902 CFD-409 CFD-250H EP-56 SW-474B L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 43 KS-FX8 3 7 63 1515 0 Grease point 2/2 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 44 KS-FX8 3 7 63 1515 0 Electrical parts list Main board  Symbol No. Part No. Part Name Description Local Block No. [0][1][0][0] QEKJ1HM-104Z E CAPACITOR 0.1uF 50V M  Symbol No. Part No. Part Name Description Local QDGB1HK-102Y...
  • Page 45 KS-FX8 3 7 63 1515 0  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C901 QEZ0518-228 E CAPACITOR 2200uF R705 QRE141J-472Y C RESISTOR 4.7kΩ 1/4W J C902 QERF1CM-106Z E CAPACITOR...

  • Page 46: Front Board

    KS-FX8 3 7 63 1515 0  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local CP801 QNZ0095-001 CONNECTOR R613 NRSA63J-681X MG RESISTOR 680Ω 1/16W J CP981 QNZ0002-001 16P CONNECTOR R614...
  • Page 47 KS-FX8 3 7 63 1515 0 Mecha control board Block No. [0][3][0][0]  Symbol No. Part No. Part Name Description Local IC401 CXA2560Q IC402 LB1641 Q402 UN2211-X TRANSISTOR Q403 2SB1322/RS/-T TRANSISTOR D401 MA3047/H/-X Z DIODE D402 1A3G-T1 SI DIODE...
  • Page 48 KS-FX8 3 7 63 1515 0 Packing materials and accessories parts list Block No. L 13942296513 KIT: A2 A4 A5 A6 u163 3-12 http://www.xiaoyu163.com...
  • Page 49 KS-FX8 3 7 63 1515 0 Packing Block No. [M][3][M][M]  Symbol No. Part No. Part Name Description Local GET0162-001A INST BOOK VKZ4027-202 PLUG NUT VKH4871-001SS MOUNT BOLT VKZ4328-001 LOCK NUT WNS5000Z WASHER GE40130-001A HOOK (x2) FSJB3002-00C HARD CASE...

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