JVC KS-FX230 Service Manual Download Page 2

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KS-FX230

1-2

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.

Safety precaution

Summary of Contents for KS-FX230

Page 1: ...ea Suffix UF China Contents Safety precaution 1 2 Disassembly method 1 3 Adjustment method 1 9 Description of major ICs 1 12 This service manual is printed on 100 recycled paper MO RND SCAN RPT SOUND LOUD DISP PROG BAND Multi Music Scan CD CHANGER CONTROL SEL SSM 7 8 9 10 11 12 1 2 3 4 5 6 40WX4 I ATT CD CH TUNER TAPE KS FX230 ...

Page 2: ...KS FX230 1 2 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 Safety precaution ...

Page 3: ...ve two screws D retaining the main board Lift up the main board to remove it At this time remove the connector CP702 connecting the main board and mechanism assembly 1 2 3 4 Remove six screws retaining the jacks or the like Remove two screws E to the 16 pin jack Remove one screw F to remove the line out jack Remove one screw G to remove the antenna jack Remove one screw H to remove the changer con...

Page 4: ...y NOTE When reassembling be sure to use a new mylar washer 1 2 3 4 5 Remove the head relay board Remove the load arm ass y Apply DC 6V to the lead wire of the loading motor ass y and turn the load gear ass y to the position shown in Fig 3 Remove the screw B securing the cassette holder and holder arm ass y Shift the cassette holder and holder arm ass y in the direction shown by the arrow and remov...

Page 5: ...and holder arm ass y Remove the sub chassis ass y Detach the mylar washers c at the two positions securing the right and left pinch roller ass y 1 2 3 4 5 Remove the head relay board Remove the load arm ass y Remove the cassette holder and holder arm ass y Remove the sub chassis ass y Detach the mylar washer d from the tip by first pressing down the reel feather to expose it NOTE When reassembling...

Page 6: ...emove the sub chassis ass y Remove the head plate Disengage the main belt from the flywheel ass y see Fig 8 Remove E washers f at the two positions which secure the capstan shaft away from the surface see Fig 9 Pull out the flywheel ass y from the rear Removing the flywheel ass y see Fig 9 1 2 3 4 5 6 7 Remove the head relay PCB Remove the load arm ass y Remove the cassette holder and holder arm a...

Page 7: ...ed as shown in Fig 12 3 Attach the cassette holder as shown in Fig 13 In this case first pass the tab of the section i through the mechanism j then attach the cassette holder in the direction shown by the arrow Removing the loading motor ass y see Fig 11 Procedures for reassembling 1 2 Insert the mode gear into the sub chassis ass y Install the sub chassis ass y and secure it with the two screws C...

Page 8: ...15 8 9 10 After the installation apply DC 6V to the lead wires of the loading motor ass y to locate the load gear ass y as shown in Fig 17 Install the load arm ass y Install the head relay PCB 11 Solder the loading motor and head lead wires to the head relay PCB respectively see Fig 19 NOTE Install it so that the slide switch lever of the head relay PCB is set in the PCB stay hook of the sub chass...

Page 9: ...t Power Spupply DC14 4V Reduced voltage 10 5V Load 4 4 speakers connection BASS TRE FADER Indication 0 Main volume Position with an output level of 2V during VT721 playback Condition for measurement FM 400Hz 22 5kHz deviation MONO FM STEREO 1kHz 6 5kHz deviation pilotsignal 7 5kHz 66dB V AM 400Hz 30 modulation 74dB V Output impedznce 50 Tuner section Dummy antenna Preset Memory Initialization Pres...

Page 10: ...in parts Connection diagram EXT KSRT002 18P 18 pin extension cord For connection between mechanism assembly and main PCB assembly Check for mechanism driving section such as motor etc Remove the bottom cover Remove the front panel assembly Remove the top cover Remove the screws at each side of heat sink and rear panel Install the front panel whose assembly was removed in step 2 to the main unit Co...

Page 11: ...djust the motor with a built in volume resistor 1 2 Play test tape VTT724 and set the volume position at 2V Play test tape VTT739 and confirm 1kHz 10kHz 1 3dB 1kHz 63Hz 0 3dB When 10kHz is out of specification it will be necessary to read adjust the azimuth 1 2 3 Load VTT724 VT724 1kHz and play it back in the reverse play mode Set the Rch output level to max Load VTT703 VT703 10kHz and play it bac...

Page 12: ...BL 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 u...

Page 13: ... supply Forcibly terns off the display regardless of internal data Serial data can be input whether this pin is high or low NOT USED To GND Oscillator connection for the common segment alternating waveform Serial data transfer pins connected to a microprocessor O O I I I I I CE Chip enable CL Sync clock DI Transfer data Symbol I O Functions 3 Pin function LC75823E IC651 LCD driver to to COM1 COM2 ...

Page 14: ...rts Output only port Key source signal output only ports General purpose input output port Output only port Power supply connections General purpose input output external interrupt shared port General purpose output port DAC shared output pins General purpose input output ports General purpose output port BEEP tone shared output pins Key return signal input only port of which threshold voltage is ...

Page 15: ...I0 LATCH BUS DRIV LATCH BUS DRIV LATCH BUS DRIV LATCH BUS DRIV LATCH BUS DRIV LATCH BUS DRIV BUS DRIV SIO RAM 512 4bits ADDRESS DECODER ROM 12K 16bits BUS DRIVER INSTRU CTION DECODER ADDRESS DECODER PROGRAM COUNTER STACK JUDGE ALU ADC PP3 PP2 PP1 PP0 PO3 PO2 PO1 PO0 PN3 PN2 PN1 PN0 BEEP PM3 PM2 PM1 PM0 PL3 PL2 PL1 PL0 PK3 PK2 PK1 INT1 PK0 INT0 PJ3 PJ2 PJ1 PJ0 MPX 1 16 1 17 3 Block diagram HOLD TES...

Page 16: ...4Y 1C 2A 2C 3A 3C 4A 4C Input Output C A X Y Z L L L H H H H 1 1C 2 1A 3 1Y 4 2C 5 2A 6 2Y 7 GND Vcc 4C 4A 4Y 3C 3A 3Y TOP VIEW 14 13 12 11 10 9 8 1 Pin arrangement 2 Pin function 3 Block diagram HD74HC126P IC751 Changer control ...

Page 17: ...p 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 18: ...ge supply for micro computer Whenever Vcc terminal is connected output always keep running Voltage which is about 1V lower than Vcc unit voltage Output current is 500mA min Voltage supply for Remote Amp To be continued to BACK UP and ACC of car Not used Output level is 8 7V Output current is 150mA min It can be used for system common power supply tone control volume control balance control equaliz...

Page 19: ...CC1 VCC2 P2 OUT2 Input Output Mode IN1 IN2 OUT1 OUT2 Brake 0 0 0 0 1 0 1 0 0 1 0 1 1 1 0 0 CLOCKWISE COUNTER CLOCKWISE Brake LB1641 IC501 DC motor driver 1 Pin layout 2 Pin functions 1 Block diagram and pin configuration CXA2509AQ IC901 Cassette mecha controler ...

Page 20: ...KS FX230 1 20 MEMO ...

Page 21: ...KS FX230 1 21 Printed in Japan 200007 O VICTOR COMPANY OF JAPAN LIMITED MOBILE ELECTRONICS DIVISION PERSONAL MOBILE NETWORK B U 10 1 1Chome Ohwatari machi Maebashi city Japan No 49565 KS FX230 ...

Page 22: ...2 1 I H A B C D E F G 1 2 3 4 5 6 KS FX230 Block diagram ...

Page 23: ... 16 100 100 12K 180K 0 033 0 033 0 22 0 22 22K 22K 150K 150K 1K 1K 10K 1K 47K 470P 3 3K 4 7K 10 27K 27K 470P 3 3K 470P 470P 6 8 82K 82K 47K 0 01 0 01 82K 4 7 25 4 7K 47K 47K 4 7K 470 4 7 25 10 47 16 3 3K 47K 3 3K 1K 1K 82K 27K 27K 47K TEA6320T 2 2 50 0 001 1K 10K 1 5K 1K 4 7uH 2200 16 1N5401TM HD74HC126P QNZ0002 001 820 100 100 820 2 2K 2 2K 10 16 2 4K 33 10 0 1 0 33 KIA7810PI 0 047 1 50 4 7K MTZ6...

Page 24: ... R636 D618 D605 D604 R633 R656 R655 R654 D622 PL601 D624 D620 47k LC75823E 680p 0 01 4 7 6 3 MA152WK TX MA152WK TX 330 MA152WA TX 1 5k 470 560 390 470 270 330 390 270 330 390 VMC0335 001 MA152WA TX 270 820 1K 820 1K 560 820 820 1K 470 560 820 150k 820 510 510 510 560 820 820 510 10K 10K 10K COM3 COM2 COM1 S52 S51 S50 S49 S17 S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S10 S11 S12 S...

Page 25: ...01 C904 C104 C903 R902 R903 C105 R105 R205 R101 C101 R201 C201 R203 VR201 C203 R907 C205 C204 R108 R502 R501 D501 D502 R505 R504 C503 R503 R901 R506 R109 0 01 300K DTC114EKA 22 16 0 1 1 2M 1 5K 0 01 300K DTC114EKA 2SB1322 RS MA3075 M LB1641 0 01 0 1 100P 5 1K 12K 33K 1 50 22 16 0 01 0 1 0 47 50 3 9K 22K 100P 180 180 100K 470P 100K 470P 12K 33K 1 50 18K 100P 0 1 5 1K 3 3K 47K DSK10C MA3036 L 33 12 ...

Page 26: ...C133 C134 C135 C136 C137 C138 C150 C152 C160 C162 C231 C232 C233 C234 C235 C236 C237 C238 C250 C252 C260 C262 C541 C542 C543 C701 C702 C703 C704 C705 C751 C771 C772 C773 B48 C783 C784 C931 C932 C933 C934 Q931 C951 C971 C972 C981 C982 C983 C984 C985 C986 CJ921 CP702 B147 CP981 D1 D2 D161 D261 D541 D542 D701 D704 D705 D706 D707 D708 D709 B10 D711 B78 D713 D714 D715 D716 D771 D781 B51 D784 D791 D792 ...

Page 27: ...606 S607 S608 S609 S610 S611 S612 S613 S614 S615 S616 S617 S618 S620 D621 S622 S619 PL601 PL603 D622 D603 D602 D601 D611 D612 D613 D614 D615 D616 D605 D604 D610 D609 D624 D623 D608 D619 D618 UP DOWN I O SEL 1 4 TAPE DISP MO SCAN TUNER CD CH LOUD SOUND FSMW1043 S01 3 EJECT 2 5 6 Head amplifier board Swich board Forward side Reverse side ...

Page 28: ...assemblies are not available as service parts Contents Exploded view of general assembly and parts list Cassette mechanism assembly and parts list Electrical parts list Packing materials and accessories parts list KS FX230 3 2 3 4 3 7 3 11 Area suffix UF China ...

Page 29: ...KS FX230 3 2 Fuse Main board Switch board 52 Mecha control board Exploded view of general assembly and parts list Block No M M M 1 ...

Page 30: ...30 FSXP3041 002 PUSH BUTTON 1 HORIZONTAL 31 FSXP3050 002 PUSH BUTTON V 1 VERTICAL 32 FSXP3049 002 DETACH BUTTON 1 33 FSKW3002 008 COMP SPRING 1 FOR DETACH BUTT 34 FSJC1031 002 REAR COVER 1 35 VKZ4777 001 MINI SCREW 4 F PANEL REAR CO 36 FSYN3031 001A NAME PLATE 1 MADE IN CHINA 37 VMA4652 001SS EARTH PLATE 1 38 FSKL4018 00B IC BRACKET 1 39 QNZ0065 001 RUBBER CONNE 1 40 FSJK3010 002 LCD LENS 1 42 FSY...

Page 31: ...KS FX230 3 4 98 SW 902S SW 474B SW 522B PANORL 56 CFD 409 Grease Oil Cassette mechanism assembly and parts list Block No M M M 2 A MODEL CDS522 VJ2 ...

Page 32: ... Y 1 22 1 0522 1008S DIR PLATE 1 23 1 0522 1031S FF REW PLATE 1 24 1 0522 1027S MOTOR BKT 1 25 1 0522 1013 30S LOAD ARM 1 26 1 0522 1014S SHIFT CAM LINK 1 27 1 0522 1017 50S CASSETTE HOLDER 1 32 1 0522 2001S TAPE GUIDE 1 33 1 0522 2002S HEAD BKT 1 34 1 0522 2003S HEAD SHIFT CAM 1 35 1 0522 2004 03S SELECT GEAR 1 36 1 0522 2005S REDUCTION GEAR 1 37 1 0522 2006S DETECT GEAR 1 38 1 0522 2007 50S DETE...

Page 33: ... 0522 7039S LEAF SW 1 11610 96 1 0522 7013S MOTOR WIRE 1 RED 97 1 0522 7014S MOTOR WIRE 1 BLACK 98 1 0522 7040S SUB MOTOR 1 FF 050SK 10200 99 1 0522 7022 01S HEAD PWB JV 1 100 1 0522 7024S CONNECTOR 10P 1 TKC F10X K1 102 X 0052 7040S PHOTO COUPLER 1 103 1 0036 7007 1S SLIDE SWITCH 1 SLD 32 710S 104 MOTOR ASS Y 1 EG 520ED 3B 105 1 0056 7011S SWITCH 1 SW 112 5 107 1 0052 7013S JOINT WIRE 7P 1 110 1 ...

Page 34: ...MF 20 16V C 783 QEZ0423 228 E CAPACITOR 2200MF C 784 QER41AM 227 E CAPACITOR 220MF 20 10V C 785 QERF1AM 336Z E CAPACITOR 33MF 20 10V C 792 QFV11HJ 334AZ TF CAPACITOR 33MF 5 50V C 793 QFV61HJ 104Z TF CAPACITOR 10MF 5 50V C 931 QER41AM 107 E CAPACITOR 100MF 20 10V C 932 QDYB1CM 103Y C CAPACITOR C 933 QER41AM 107 E CAPACITOR 100MF 20 10V C 934 QER41CM 476 E CAPACITOR 47MF 20 16V C 951 QERF1EM 475Z E ...

Page 35: ...4W R 702 QRE141J 473Y C RESISTOR 47K 5 1 4W R 703 QRE141J 473Y C RESISTOR 47K 5 1 4W R 704 QRE141J 473Y C RESISTOR 47K 5 1 4W R 705 QRE141J 473Y C RESISTOR 47K 5 1 4W R 706 QRE141J 473Y C RESISTOR 47K 5 1 4W R 707 QRE141J 473Y C RESISTOR 47K 5 1 4W R 708 QRE141J 473Y C RESISTOR 47K 5 1 4W R 709 QRE141J 472Y C RESISTOR 4 7K 5 1 4W R 710 QRE141J 472Y C RESISTOR 4 7K 5 1 4W R 711 QRE141J 473Y C RESIS...

Page 36: ... 391X MG RESISTOR R 611 NRSA02J 471X MG RESISTOR R 612 NRSA02J 561X MG RESISTOR R 613 NRSA02J 821X MG RESISTOR R 614 NRSA02J 821X MG RESISTOR R 615 NRSA02J 271X MG RESISTOR R 616 NRSA02J 331X MG RESISTOR R 617 NRSA02J 391X MG RESISTOR R 618 NRSA02J 471X MG RESISTOR R 619 NRSA02J 561X MG RESISTOR R 620 NRSA02J 102X MG RESISTOR R 628 NRSA02J 821X MG RESISTOR R 631 NRSA02J 821X MG RESISTOR R 633 NRSA...

Page 37: ...ONNECTOR D 501 DSK10C T1 DIODE D 502 MA3036 L X ZENER DIODE D 503 MA3075 M X ZENER DIODE IC501 LB1641 IC IC901 CXA2509AQ IC Q 501 2SA1706 ST T TRANSISTOR Q 502 DTC114EKA X TRANSISTOR Q 503 DTC114EKA X TRANSISTOR R 101 NRSA02J 104X MG RESISTOR R 103 NRSA02J 123X MG RESISTOR R 104 NRSA02J 304X MG RESISTOR R 105 NRSA02J 181X MG RESISTOR R 108 NRS181J 512X MG RESISTOR R 109 NRSA02J 152X MG RESISTOR R ...

Page 38: ...ts number Parts name Area A Parts list Q ty Description Block No M4MM A 1 FSUN3029 181S INST BOOK 1 A 2 FSUN3029 T181S 1 A 6 VKZ4027 202 PLUG NUT 1 A 7 VKH4871 001 MOUNT BOLT 1 A 8 VKZ4328 001 LOCK NUT 1 A 9 WNS5000Z WASHER 1 A 10 FSKL4010 002 HOOK 2 A 13 FSJB3001 00A HARD CASE 1 A 14 FSKM2004 003SSF MOUNTING SLEEVE 1 TRANSPORT PACKI A 15 QAM0013 006 16P CORD ASS Y 1 A 16 FSJD2019 002SSF TRIM PLAT...

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