JVC KS-FX7 Service Manual
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JVC KS-FX7 Service Manual

JVC KS-FX7 Service Manual

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3 7 63 1515 0
SERVICE MANUAL
TE
L 13942296513
www
.
http://www.xiaoyu163.com
CASSETTE RECEIVER
KS-FX7
Contents
Safety precaution
Disassembly method
Adjustment method
Description of major ICs
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ao
u163
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i
COPYRIGHT
2001 VICTOR COMPANY OF JAPAN, LTD.
http://www.xiaoyu163.com
2 9
8
CD CHANGER CONTROL
LOUD
DISP
Multi
Music
Scan
SCAN
7
8
9
10
11
12
MO
Q Q
3
6 7
1 3
1 5
1-2
1-3
1-12
1-16
co
.
9 4
2 8
0 5
8
2 9
9 4
2 8
Area Suffix
UN -------- Asean
m
KS-FX7
9 9
9 9
No.49647
Aug. 2001

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  • Page 1 KS-FX7 3 7 63 1515 0 SERVICE MANUAL CASSETTE RECEIVER KS-FX7 CD CHANGER CONTROL LOUD DISP Multi Music Scan SCAN L 13942296513 Area Suffix UN -------- Asean Contents Safety precaution Disassembly method Adjustment method 1-12 Description of major ICs...
  • Page 2 KS-FX7 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 3 KS-FX7 3 7 63 1515 0 Disassembly method <Main body> Removing the front panel assembly (See Fig.1) Press the eject button in the lower right part of the front panel. Remove the front panel assembly from the body. Front panel assembly Eject button Fig.1...
  • Page 4 KS-FX7 3 7 63 1515 0 Removing the heat sink (See Fig.4) Remove the three screws A on the left side of the body. Heat sink Removing the bottom cover (See Fig.5 and 6) Fig.4 Prior to performing the following procedure, remove the front panel assembly, the front chassis assembly and the heat sink.
  • Page 5 KS-FX7 3 7 63 1515 0 Removing the main board (See Fig.7 and 8) Prior to performing the following procedure, remove the front panel assembly, the front chassis assembly, the heat sink and the bottom cover. Remove the screw B, the five screws C and the two...
  • Page 6 KS-FX7 3 7 63 1515 0 Removing the control switch board (See Fig.10 to 12) Prior to performing the following procedure, remove the front panel assembly. Remove the four screws G attaching the rear cover on the back of the front panel assembly.
  • Page 7 KS-FX7 3 7 63 1515 0 Cassette mechanism ass’y <Removal of the cassette mechanism> Removing the head amplifier P.W.B. Head relay (See Fig.1 and 2) P.W.B. For the 6pin harness extending from connector CN402 on the head amplifier P.W.B, disconnect it from the head relay P.W.B.
  • Page 8 KS-FX7 3 7 63 1515 0 Head relay P.W.B. Removing the head relay P.W.B. (See Fig.4) Unsolder the soldering b on the head relay P.W.B. Remove the screw C attaching the head relay P.W.B. Remove the head relay P.W.B. in the direction of the...
  • Page 9 KS-FX7 3 7 63 1515 0 Cassette holder and holder arm Joint h Shaft Joint h Shaft Removing the play head (See Fig.9) Prior to performing the following procedure, remove the head relay P.W.B.and the sub chassis. Fig.8 Remove the two screws F attaching the play head Pinch roller ass’y...
  • Page 10 KS-FX7 3 7 63 1515 0 Removing the flywheel Cassette mechanism ass’y Reel disc P.W.B. (See Fig.10 and 12) Soldering j Prior to performing the following procedure, remove the head relay P.W.B, the load arm, the sub chassis, the cassette holder, the holder arm and the reel disc Tab k P.W.B.
  • Page 11 KS-FX7 3 7 63 1515 0 Push aside the gear and reattach the reel disc Ass’y( ). Removing the reel disc ass’y( ) (See Fig.12 to 15) ATTENTION: Prior to performing the following procedure, remove the reel disc ( ).
  • Page 12 KS-FX7 3 7 63 1515 0 Adjustment method Test instruments reqired for adjustment Standard volume position 1. Digital osclloscope(100MHz) Balance and Bass,Treble volume .Fader 2. Frequency Counter meter :Center(Indication"0") 3. Electric voltmeter Loudness,Dolby NR,Sound,Cruise:Off 4. Wow & flutter meter Volume position is about 2V at speaker output with 5.
  • Page 13 KS-FX7 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) Head section view L 13942296513 Azimuth screw B Azimuth screw A...
  • Page 14 KS-FX7 3 7 63 1515 0 Information f or 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.
  • Page 15 KS-FX7 3 7 63 1515 0 Mechanism adjustment section Item Adjusting & Confirmation Methods Adjust Std. Value 1. Tape running a) At Forward playmode, using mirror tape, make adjustment Azimuth adjustment with Azimuth screw A and Azimuth screw B, without curl of 4 screw A parts of head tape guide.

  • Page 16: 2.Block Diagram

    KS-FX7 3 7 63 1515 0 Description of major ICs TEA6320T-X (IC161) : E.volume 1.Pin layout 2.Block diagram VOLUME 2 MUTE 0 to 55 dB FUNCTION BALANCE OUTRR OUTLR ZERO CROSS FENDER REAR POWER DETECTOR OUTRF OUTLF SUPPLY VOLUME 1...
  • Page 17 KS-FX7 3 7 63 1515 0 AN80T05LF (IC901) : Regulator 1.Terminal layout & Block diagram Reference Voltage ASO & Peak Current Protection Thermal Protection Drive Drive Drive Drive Drive L 13942296513 MODE2 MODE1 5.6V 8.7V 8.7V 8.7V 2.Pin function...

  • Page 18: Table Of Contents

    KS-FX7 3 7 63 1515 0 CXA2559Q(IC401):Head amp. 1.Pin layout 2.Blockdiagram L 13942296513 24dB 100k PBFB2 MSMODE 7k/12k PBRIN2 DRSW 300k MS MODE PNGND BIAS TAPESW PNFIN2 MUTESW MUTE TAPE EQ PBREF FWD/RVS MS ON/ PBFIN1 MSOUT PBGND MSTC...

  • Page 19: Tel 13942296513

    KS-FX7 3 7 63 1515 0 3.Pin function CXA2559Q 2/2 Pin No. Symbol Function PBTC1 Terminal of capacity of reproduction equalizer reproduction PBOUT1 Equalizer output terminal OUTREF1 Output standard terminal TAPEIN1 Tape input terminal Power supply terminal Non connection...

  • Page 20: Q Q

    KS-FX7 3 7 63 1515 0 LC72366-9985 (IC701) : SYSTEM CPU 1. Pin layout 2. Pin function Pin No. Symbol Function Crystal oscillator input port Connect to GND Data input for J-BUS information J-BUS SI Data output for J-BUS information...
  • Page 21 KS-FX7 3 7 63 1515 0 LC72366-9985(2/2) Pin No. Port Name Function Main motor output, H:Transport L: Stop MOTOR Sub-motor output(+), Loading direction to transport output SUBMO+ Sub-motor output(-), Eject direction to transport output SUBMO- Non connection BEEP Switch for detecting to input cassette, L: Cassette in...

  • Page 22: Mute

    KS-FX7 3 7 63 1515 0 HA13158A (IC301) : Power amp 1. Pin layout 2. Block diagram PVCC2 PVCC1 INVCC STBY INPUTBUFFER1 AMP1 L 13942296513 INPUTBUFFER2 AMP2 INPUTBUFFER3 AMP3 INPUTBUFFER4 AMP4 MUTE PROTECTOR (ASO SURGE, TSD) u163 1-22 http://www.xiaoyu163.com...
  • Page 23 KS-FX7 3 7 63 1515 0 LC75823W (IC651) : LCD driver 1. Pin Layout & Symbol 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 2.
  • Page 24 KS-FX7 3 7 63 1515 0 KIA7810PI (IC902) : Regulator 1.Pin layout 2.Block diagram 1 INPUT 1 2 3 3 OUTPUT L 13942296513 2 GND LB1641 (IC402) : DC motor driver 1. Pin layout GND OUT1 P1 IN2 VCC1 VCC2 P2 OUT2 2.
  • Page 25 KS-FX7 3 7 63 1515 0 RPM6938-SV4(IC652) : Remote Censor 1.Block diagram Comp Rout Detector conversion trimming circuit magnetic shield L 13942296513 HD74HC126P (IC801) : Bus buffer HD74HC126 u163 1-25 http://www.xiaoyu163.com...
  • Page 26 KS-FX7 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED MOBILE ELECTRONICS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,Japan Printed in Japan (No.49647) 200108(V) http://www.xiaoyu163.com...
  • Page 27 3 7 6 3 1 5 1 5 0 KS-FX7 OUTLR IC161 LINE TU_L TUNER OUTRR E.VOL TU_R PACK EO,FM/AMOSC,IFC,MONO IFREQ,S.METER,SD/ST SUBMO+ SUBMO+ IC402 MAIN SUBMO- DRIVER SUBMO- MOTOR OUTLF TAPE_L,TAPE_R OUTLR TAPEIN,MODE,REEL OUTRF MOTOR,STANDBY MOTOR EVOLCLK OUTRR EVOLDA...
  • Page 28 KS-FX7 3 7 63 1515 0 < M E M O > L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 29 KS-FX7 3 7 6 3 1 5 1 5 0 Standard schematic diagrams Main amp section CJ321 QNN0170-001 QAU0205-001 IC301 HA13158A QNZB0100-001 R353 R354 R343 R344 1/50 EVOLCLK 1/50 EVOLDA 4.7uH R331 R351 CH.L R341 TAPE.L R321 R163 3.9K C167 TU.L...
  • Page 30 KS-FX7 KS-FX7 3 7 6 3 1 5 1 5 0 Mechanism control section Q403 2SB1322/RS/-T R401 Q402 DTC114EKA-X CN403 QGF1219F1-10S 0.015 C411 Q401 1 3 9 4 2 2 9 6 5 1 3 R418 22/16 C409 IC401...
  • Page 31 http://www.xiaoyu163.com KD-SX7 3 7 6 3 1 5 1 5 0 LCD & Key control section LCD1 CP701 VMC0335-001 IC652 RPM6938-SV4 JS601 QSW0793-001 1 3 9 4 2 2 9 6 5 1 3 R658 D601 R631 COM1 R651 MA152WK-X COM2 1.5k SML-310LT/MN/-X...
  • Page 32 KS-FX7 KS-FX7 3 7 6 3 1 5 1 5 0 Printed circuit boards Main board Front board (Forward side) IC652 R652 D602 S619 D601 C653 R607 S601 R637 R608 C671 R609 R658 S609 R611 R631 R639 R633 D603...
  • Page 33 KS-FX7 3 7 63 1515 0 Mecha control board Reel board L 13942296513 CA-IN Main:- Main:+ MODE Sub:- Sub:+ S T- B Y CrO2 u163 http://www.xiaoyu163.com...
  • Page 34 KS-FX7 3 7 63 1515 0 PARTS LIST [ KS-FX7 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix UN ----------------------------Asean L 13942296513 - Contents - 3- 2 Exploded view of general assembly and parts list (Block No.M1) 3- 5 Cassette mechanism assembly and parts list (Block No.MP)
  • Page 35 KS-FX7 3 7 63 1515 0 Exploded view of general assembly and parts list Block No. L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 36 KS-FX7 3 7 63 1515 0 Parts list (General assembly) Block No. M1MM Item Parts number Parts name Q'ty Description Area --------------- CDS-801 FSYH4036-050 SHEET FSKL2001-003 MECHA BRACKET(L) FSKL2002-001 MECHA BRACKET(R) QYSDST2606Z SCREW PCB+MECHA QYSDST2606Z SCREW MECHA+M.BKT FSJC1056-001 TOP CHASSIS...
  • Page 37 KS-FX7 3 7 63 1515 0 Parts list (General assembly) Block No. M1MM Item Parts number Parts name Q'ty Description Area GE30239-002A NAME PLATE GE40103-001A IC BRACKET GE40107-002A HEAT SINK (2) VMA4652-001SS EARTH PLATE FSKL4018-00B IC BRACKET FSKM3010-011 REAR BRACKET...
  • Page 38 KS-FX7 3 7 63 1515 0 Cassette mechanism assembly and parts list Block No. CDS-801 CFD-409 99 100 101 102 FG-84M FG-84M SW-902 FG-84M SW-902 CFD-409 CFD-409 CFD-409 SW-522B L 13942296513 FG-84M FG-84M SW-522B FG-84M LEN-315Y2 FG-84M LEN-315Y2 CFD-409...
  • Page 39 KS-FX7 3 7 63 1515 0 Parts list (Cassette mechanism) Block No. MPMM Item Parts number Parts name Q'ty Description Area X-0801-1003S MAIN CHASSIS AS X-0801-1002S SLIDE CHASSIS A X-0801-1008S SIDE BKT ASS'Y X-0801-1010S EJECT CAM LIMIT X-0801-1013S CASSETTE HANGER...
  • Page 40 KS-FX7 3 7 63 1515 0 Parts list (Cassette mechanism) Block No. MPMM Item Parts number Parts name Q'ty Description Area 1-0801-4008S REEL DRIVER SPG 1-0801-4009S LOAD ARM SPG 1-0801-4011S HOLDER STAB SPG 1-0801-5001S BELT 1-0801-5002S FELT 7.5*18.5*1.0 1-0801-5003S...
  • Page 41 KS-FX7 3 7 63 1515 0 Grease point 1/2 SW-902 SW-522B FG-84M CFD-409 LEN-315Y2 FG-84M SW-902 SW-902 SW-902 FG-84M FG-84M SW-902 FG-84M SW-902 FG-84M L 13942296513 FG-84M u163 http://www.xiaoyu163.com...
  • Page 42 KS-FX7 3 7 63 1515 0 Grease point 2/2 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 43 KS-FX7 3 7 63 1515 0 Electrical parts list (Main board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area QERF1CM-106Z E CAPACITOR 10MF 20% 16V C 782 QERF1CM-476Z E CAPACITOR...
  • Page 44 KS-FX7 3 7 63 1515 0 Electrical parts list (Main board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area Q 351 2SD2144S/VW/-T TRANSISTOR R 355 QRE141J-222Y C RESISTOR 2.2K 5% 1/4W...
  • Page 45 KS-FX7 3 7 63 1515 0 Electrical parts list (Main board) Block No. 01 Item Parts number Parts name Remarks Area R 979 QRE141J-473Y C RESISTOR 47K 5% 1/4W TU 1 QAU0205-002 TUNER X 701 QAX0406-001Z CRYSTAL L 13942296513...
  • Page 46 KS-FX7 3 7 63 1515 0 Electrical parts list (Mecha control board) Block No. 02 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area C 651 NCB31HK-103X C CAPACITOR R 638 NRSA63J-271X MG RESISTOR...
  • Page 47 KS-FX7 3 7 63 1515 0 Electrical parts list (Front board) Block No. 03 Item Parts number Parts name Remarks Area C 401 NDC31HJ-101X C CAPACITOR C 402 NDC31HJ-101X C CAPACITOR C 403 NDC31HJ-101X C CAPACITOR C 404 NDC31HJ-101X...
  • Page 48 KS-FX7 3 7 63 1515 0 < M E M O > L 13942296513 u163 3-15 http://www.xiaoyu163.com...
  • Page 49 KS-FX7 3 7 63 1515 0 Packing materials and accessories parts list Block No. Block No. L 13942296513 A1,A2 A3,A4 A7, A8 u163 3-16 http://www.xiaoyu163.com...
  • Page 50 KS-FX7 3 7 63 1515 0 Parts list (Packing) Block No. M3MM Item Parts number Parts name Q'ty Description Area FSPG4002-001 POLY BAG INST.BOOK QPA00801205 POLY BAG SCREW VPE4005-007 POLY BAG FRONT QPC03004315P POLY BAG GE30123-036A CARTON GE10007-001A PAPER CUSHION...

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