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SERVICE MANUAL

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2. r J METAL 1 aaoa CONTROL FSMW1093 3 GND 45V MOTOR 4 zm UT SUBMOt 5 14 3V SUBMO 6 e STANDBY 7 5 5 9 MODE 8 GND 9 oj REEL 10 ai 4 8 20mA 0402 PHOTO 11 EA 8 DTC114EKA X DOLBY NO DOLBY CJ403 8 401 VR402 USE NOT USE GGF1219F1 11 XR40B R408 R410 411 NOT USE USE XC416 0417 USE NOT USE 401 25600 5590 METAL NO METAL zx 0401 8420 USE NOT USE x 417 8418 NOT USE USE yx SW 472 g gt 22m 5 8 0 015 Izlaz z se 4 4 C411 es 1 15 sl ad 0401 Ge NEIE ARNEE ARANA 5 ov E 2 2 TZN l 5 9 25 56 55659 TEE 5 ov or 4 8V PBFB2 FF REW 20 8 8 855 DIRECTION 159 y 5 PBRIN2 5 2V R418 S PBGND METAL 18 mec TSO 15K 50715 PBFIN2 MUTE 16 C409 pF IC401 ov zx COMMON L 1 PBRE
3. 1T 2 BIA 51 Ee 1 8 Lo pu 2 2 Block daigram REGULATOR H A 1 x 777 TIT a vy ze EXT 8 37K 88 RESET b DE a 5 7 11 12 RESET COMP VDD 5 7V CD 8V VCC AJ EXT ACC AUDIO 9V CTRL ILM 10V GND 3 Pin function Pin no Symbol Function 1 If VDD voltage becomes 4V or less RESET output becomes low level 2 EXT output This output voltage is approximately 0 5V lower than VCC and max output current is 300mA 3 COMP output A voltage supply for ACC block This output voltage is approximately 0 7V lower than VDD S The max output current is 100mA 4 ACC Control of the COMP output by inputting voltage 5 VDD output This output voltage is 5 7V and max output current is 100mA This voltage supply is for microcomputer Whenever back up voltage supply is connected the output keeps on running 6 AUDIO output This output voltage is 9 0v and max output current is 500mA This voltage supply for AUDIO 7 CD output This output voltage is 8 0V and max output current is 1A This voltage supply for CD 8 CTRL Output selector of CD AUDIO ILM and EXT 9 VCC To be connected with the BACK UP of car 10 ILM output This output voltage is 10V and max output current is 500mA Output voltage is adjustable 11 AJ Putting a resistance between ILM and AJ or between AJ and GND makes ILM output volta
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7. LNOTd NOOON3Hd 39801 LASM OASM ZON3 LON3 H3MOd 0621 LAdLANO ANII INV W O3NV O3W4 15 45 ONON sng 1089 yossnar p oisnar ossnar issnar 1049 195 YHo THO 8878 8474 19190 HINOH4 1LNOHj 106d9 OSOWA dOLS 33S vasag MOSdY YOLOALAG Sag 1491 YOLOW M3udd 910q LNOSW 1999 ON9nS OWENS NI3dVL A8QNVLS YANNL Y NLT AL LAL H 3avlL r 3avL 09 i H3AI3O3UH NO9O 3H8 NODOWSY 20921 ZONA HONS HOLIMS AJM ge 1 72821 1 39001 10901 i ENWOD LWOD i 895 15 Wd ura LNOSW T M3H corro H A3U 3J Od ad i YN Ag TOG LOvOl oNans OWENS ONSns 2 21 3 DTA144EKA t DICA LEKA UNG211 W METAL GLAZE RESISTOR pF C AM MODE UNLESS OTHERWISE SPECIFIED ALL E CAPACITORS ARE SHOWN IN THE FORM OF CAPACITANCE uF RATED VOLTAGE V VOLTAGES ARE DC MEASURED WITH A DIGITAL VOLT ME
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10. ASS Y 1 11 0801 20215 PINCH ARM F ASS 1 12 0801 20225 PINCH ARM R ASS 1 13 1 0801 6003S FLYWHEEL ASSY R 1 16 0801 70065 SUB MOTOR ASS Y 1 17 0801 70575 MAIN MOTOR ASSY 1 21 1 0801 10035 DIRECTION PLATE 1 22 1 0801 10045 DIRECTION LINK 1 23 1 0801 10055 PINCH SPG ARM 1 24 1 0801 10065 CASSETTE GUIDE 1 25 1 0801 10075 LOAD ARM 1 26 1 0801 10095 HEAD SUPT SPG 1 27 1 0801 10115 PLATE 1 28 1 0801 10125 1 30 1 0801 10205 REINFORCE 1 32 1 0101 20565 IDLE PULLEY A1 1 33 1 0801 20045 REDUCTION GEARA 1 34 1 0801 2005S REDUCTION GEARB 1 35 1 0801 20065 SPG HOLDER F 1 36 1 0801 2007S FRICTION GEARPL 1 37 1 0801 20085 FRICTION GEARFF 1 38 1 0801 2009S MODE GEAR 1 39 1 0801 2010S REEL SPINDLE 2 40 1 0801 2011S REEL DRIVER 2 41 1 0801 20145 1 42 1 0801 2015S GEAR BASE LINK 1 43 1 0801 2016S TAKE UP GEAR 1 44 1 0801 2017S REFLECTOR GEAR 1 45 1 0801 2018S MODE RACK 1 46 1 0801 2019S MODE SW ACTUATR 1 47 1 0801 2020S TAPE GUIDE 1 48 1 0801 20235 LOAD RACK 1 49 1 0801 20245 RACK LINK 1 50 1 0801 20255 CASSETTE CATCH 1 51 1 0801 20305 HOLDER 1 55 1 0801 30055 RACK COLLAR 1 59 1 0801 40015 PINCH ARM SPG 1 60 1 0801 4002S TU SPG 1 61 1 0801 40035 SPG 1 63 1 0801 40055 PLT SP 1 64 1 0801 4006S HOLDER CUSH SPG 1 1 Parts list Cassette mechanism Block No M2MM
11. E attaching the reinforce bracket 2 Remove the reinforce bracket 3 Push the tab g fixing the cassette holder in the direction of the arrow and open the cassette holder and the holder arm upward until they stop at an angle of 45 degrees Move the two joints h to the side and remove the cassette holder and the holder arm from the shaft KS FX850R KS FX835R KS FX820R Head relay P W B E washer Fig 5 Head relay P W B Cassette mecha chassis Cassette holder Sub chassis gt bracket Head relay P W B Fig 7 KS FX850R KS FX835R KS FX820R Cassette holder and holder arm Removing the play head See Fig 9 Prior to performing the following procedure remove the head relay P W B and the sub chassis 1 Remove the two screws F attaching the play head The spring under the play head comes off at the same time B Removing the pinch roller ass y See Fig 9 Prior to performing the following procedure remove the head relay P W B and the sub chassis Pinch roller ass y T TEC Fig 9 1 Push each tab i in the direction of the arrow and pull out the pinch rollers on both sides Reel disc P W B Cassette mechanism ass y B Removing the reel disc P W B See Fig 10 1
12. KS FX835R KS FX820R Disassembly method B Removing the front panel unit See Fig 1 1 Press the release switch and remove the front panel unit in the direction of the arrow B Removing the front chassis See Fig 2 3 1 Remove the two screws A attaching the front chassis 2 Insert a screwdriver to the two joints a on the side of the front chassis two joints b on the right side and one joint c from upside then detach the front chassis toward the front side Front chassis Fig 3 E Removing the heat sink See Fig 4 1 Remove the three screws B attaching the heat sink on the left side of the body and remove the heat sink Heat sink B Fig 4 2 1 KS FX850R KS FX835R KS FX820R E Removing the bottom cover See Fig 5 Bottom cover 1 Turn the body upside down 2 Insert a screwdriver to the two joints d and two joints e on both sides of the body and the joint f on the back of the body then detach the bottom cover from the Fig 5 E Removing the rear panel See Fig 6 1 Remoe the front chassis 2 Remove the heat sink 3 Remove the bottom cover 4 Remove the five screws B attaching the rear panel and one screw C attaching the pine jack on the back of the body Fig 6 Main board assembly E Removing the main amplifier board assembly See Fig 7 1 Remove the front chassis D 2 Remove the bottom cover 3 Remove the rear panel CP701 4 Remove the two screws D
13. PCB MECHA CASSETTE MECHA JOG DIAL 1 6 LASER CUT MO RND RPT DISP TP PTY FOR KNOB FOR REMOTE CON FOR EJECT BUTTO FOR DETACH BUTT FRONT SW PWB KS FX850R KS FX835R KS FX820R KS FX820R KS FX835R Parts list General assembly Block No M1MM LA item Parts number Gu Description 51 52 53 54 55 57 58 zi 60 61 62 64 65 67 68 69 70 71 72 74 82 83 84 85 A 86 87 88 89 90 93 94 96 99 LCD1 100 101 102 104 105 106 107 108 5 4061 001 5 2038 001 FSXP3060 001 FSKW3002 016 VJK3707 001 QYSPSGU1745N VKS3793 001 FSKS3015 001 VKS3798 002 FSXP2043 001 VKS3794 003 VKS3795 002 VKS5563 001 VKZ4786 002 FSKW4012 002 FSKW4013 002 VKW5262 001 VKW5263 002 VKW5264 005 QYSDSF2006M VKZ4777 001 FSKL4018 00B FSKL4023 001 FSKL4014 001 VMA4652 001SS QMFZ021 100 J1 FSKS3017 002 FSXP4006 001 FSKS3014 001 FSYH4036 035 FSYH4036 049 FSYH4036 050 FSYH4036 032 FSKL2001 001 QLD01 13 001 9100124 001 9100123 001 FSKL2002 001 FSYH4036 031 FSXP3059 001 FSKM3012 011 QYSDST2606Z QYSDST2606Z QYSDSF3006Z QYSDST2606Z LIGHTNG SHEET OPERAT BUTTON RELEASE LEVER COMP SPRING LIGHT LENS MINI SCREW LOCK LEVER TOP LOCK LEVER O L RELEASE LEVER UP DOWN BUTTON LOCK LEVER L LOCK LEVER R GEAR OIL DAMPER T SPRING T SPRING T SPRING T SPRING T SPRING SCREW MINI SCREW IC BRACKET P W B BRACKET HEAT SINK EARTH PLATE FUSE LED HOLDER SCM
14. ZCKSFX820R NPA ZCKSFX850R NPA ZCKSFX835R NPA FSJC1058 001 FSJD3024 00B FSJD3024 00C FSJD3024 00D FSMH3001 002 FSKM301 1 002 FSMA3005 001 QYSDST2604Z FSKZ4005 001 QYSDST2606Z QYSDST2606Z QYSDSF2006M FSJC1056 002 QYSDST2606Z QYSDST2606Z FSXK3003 005 FSXP2045 002 FSXP3053 002 FSXP3058 001 FSXP3062 001 FSXP2041 003 FSXP3061 001 FSJK3027 001 FSJK4009 001 VKW3001 330 VKW3001 330 FSJC1059 001 VKZ4777 001 FSYN31 13 005 FSYN3110 D005 FSYN3111 D005 5 4061 002 5 4080 001 FSJK3028 001 FSKS3013 001 FSYH3024 001 QNZ0450 001 QNZ0449 001 FRONT CHASSIS FRONT CHASSIS FRONT CHASSIS CASSETTE LID CASSETTE LID DOOR SPRING NOSE PIECE NOSE PIECE NOSE PIECE FRONT PANEL FINDER LENS FINDER LENS FINDER LENS HEAT SINK BOTTOM COVER INSULATOR SCREW SCREW SCREW SCREW SCREW CHASSIS BASE SCREW SCREW CDS 801 JV VOL KNOB PRESET BUTTON POWER BUTTON EJECT BUTTON PUSH BUTTON R PUSH BUTTON L SEL BUTTON RIM LENS REMOTE LENS COMP SPRING COMP SPRING REAR COVER MINI SCREW NAME PLATE NAME PLATE NAME PLATE LIGHTNG SHEET LIGHTNG SHEET LCD LENS LENS CASE LCD CASE RUBB CONNECTOR RUBB CONNECTOR n oO ae n ae cono on on on on on 4A pO MH MH BP Be on on ne on on on ce KS FX850R KS FX820R 835R KS FX850R KS FX820R 835R KS FX820R KS FX850R KS FX835R KS FX850R KS FX820R KS FX835R CHASSIS MECHA B CHASSIS REAR BK CHASSIS MAIN PW MECHA M BKT
15. attaching the main amplifier board assembly on the top cover 5 Disconnect connector CP701 on the main amplifier board assembly from the cassette mechanism assembly Fig 7 2 2 E Removing the Cassette mechanism assembly See Fig 8 1 Remove the front chassis 2 Remove the bottom cover 3 Remove the main amplifier board assembly 4 Remove the fore screws F attaching the cassette mechanism assembly from the top cover E Removing the control switch board See Fig 9 and 10 1 Remove the front panel unit from the main body 2 Remove the five screws G attaching the rear cover on the back of the front panel unit 3 Remove the control switch board from the front panel unit KS FX850R KS FX835R KS FX820R Cassette mechanism assembly Fig 8 Top cover ole G Fig 9 G LCD amp Key control board 2 3 KS FX850R KS FX835R KS FX820R Cassette mechanism ass y Removal of the cassette mechanism Removing the mecha control P W B Head relay See Fig 1 and 2 P W B 1 For the 6pin harness extending from connector CN402 on the mecha control PW B disconnect it from the head relay P W B 6pin 2 Disconnect the card wire from connector CN403 on the mecha control PW B CN402 Mecha control P W B 3 Remove the screw attaching the mecha control PW B Fig 1 4 Move the tab a as shown in Fig 2 and remove the mecha control P W B while moving it
16. frequency input 32 NC None connect 33 GNDPLL PLL GND 34 AMEO O AM error out output 35 FMEO O FM error out output 36 1C GND 37 SD ST Station detector Stereo signal input H Find Station L Stereo 38 STAGEO Pull up 39 NC Non connect 40 MOTOR O Main motor output KS FX850R KS FX835R KS FX820R UPD178018AGC 551 IC701 Main system control CPU Pin No Port Name Descriptions 41 FF REW Output for input signal level switching for MS L FEREW 42 F R FWD REV running direction switch signal input 43 DOLBY Dolby output 44 MSIN MS input 45 2 2 information clock output 46 2 2 information data output 47 I2CDAI 2 information clock input 48 REEL Switch for detecting tape end position 49 SUBMO1 Sub motor clock direction input 50 SUBMO2 O Sub motor clock opposite detection drive output 51 MODE Mechanism mode position detection input 52 TAPEIN Cassette in detection input cassette 53 STANDBY Standby position detection input H eject side operation side 54 NC 55 56 Non connect 57 NC 58 5 59 Touch tone output 60 MUTE Mute output L mute on 61 PONT Power ON OFF
17. switching output H power on 62 TELMUTE Telephone mute signal detection input 63 DIMIN Dimmer signal detection input dimmer 64 DIMOUT Dimmer control output Dimmer off L output 65 ENC1 Rotary volume signal 1 input Power save L 66 ENC2 Rotary volume signal 2 input 67 ACCDET Power save 1 Working ACC Power save 68 POWER Power save 2 Working together Back by input stop mode 69 RDSSCK Clock input for RDS 70 RDSDA RDS data input 71 REMOCON Remocom input 72 DETACH Detach signal input H Power save 73 J BUSINT Cut in input for J BUS signal 74 REGCPU 2 Regulator for CPU power supply Connect the GND with0 1 4 F 75 GND Ground 76 X2 Connecting the crystal oscillator for system clock 77 X1 Connecting the crystal oscillator for system clock 78 REGOSC Regulator for oscillator circuit Connect the GND with 0 1 HF 79 VDD Vdd 80 RESET 5 Pull up 2 15 KS FX850R KS FX835R KS FX820R HA13158A 1 Power amp 2 16 1 Pin layout 1 2 Block diagram INVCC PVCC2 PVCC1 stay o V IN1 0 1 1 __ d E o 7 IN2 0 4 1 NPUTBUFFER2 4 ms 2 p 43 8 O 4 ER NG T A IN4 co 3 INPUTBUFFER4 e pes MUTE PROTECT
18. 0 TEST Test enable input 11 VSSD Ground for digital part 12 VDDD 5V supply voltage for digital part 13 OSCI Oscillator input 14 OSCO Oscillator output 15 T57 57 2 clock signal output 16 RDCL RDS clock output OSCI OSCO VDDD 12 CIN 5 VDDA Vref COSTAS LOOP COMPARATOR C ED VARIABLE AND FIXED DIVIDER EFERENCE Vp1 CLOCK BIPHASE SYMBOL DIFFERRENTIA DECODER DECODER REGENERATION AND SYNC B LB1641 402 DC Motor Driver 1 Pin Layout TEST LOGIC AND OUTPUT SELECTOR SWITCH MODE TEST VSDD 2 Pin Functions GNDOUT1 VZ IN1 IN2 VCC1VCC2 P2 OUT2 DUE qon o 1 1 COUNTERCLOCKWISE Tn Joogs 2 19 KS FX850R KS FX835R KS FX820R 6320 IC161 E volume 1 Pin Layout SDA GND OUTLR OUTLF TL B2L B1L IVL ILL QSL IDL MUTE ICL IMD IBL IAL 1 2 3 4 5 6 7 8 9 16 TUNER 17 CD CH 20 2 Block Diagram 10 32 SCL 31 VCC 30 OUTRR 29 OUTRF 28 27 B2R 26 25 24 ILR 23 QSR 22 IDR 21 Vref ICR 19 18 IBR IAR SUPPLY SOURCE SELECTOR 23 25 3 Pin Functions Functions VOLUME 1 20to 31 dB LOUDNESS LEFT 20 10 31 48 LOUDNESS mom RIGHT 24 26 27 MUTE E VOLUME 2 FUNCTION 0 to 55 d
19. 3 2 0 25 2 1 4 0 0 25 2 1 4 0 0 25 1 5 Packing materials and accessories parts list A16 Trim Plate A14 Car Cable A1 A2 A3 A18 KIT2 A10 A11 A17 SCREW KIT 1 gt Hook 4 A5 Plug nut A6 Mount bolt AT Lock nut A8 Washer Block No Block No SCREW KIT 2 A 3 Packing parts list Block No M3MM Aem Parts number_ Paremme Qu Dewiplon FSPE3001 174 FSPE3004 061 FSPE3004 060 FSPH1018 002 VPE3005 064 QPA01703505P QPA00801205 QPA01003003 Accessories parts list PACKING CASE PACKING CASE PACKING CASE PAPER CUSHION POLY BAG POLY BAG POLY BAG POLY BAG KS FX850R KS FX820R KS FX835R FOR INST BOOK Block No M4MM Af Parts number_ ___Parts name f aw f area 1 FSUN3113 321 FSUNS1 13 311 FSUNS113 T481 FSUNS113 T451 FSUNS113 T211 54013 1 VKZ4027 202 VKH4871 001SS VKZ4328 001 WNS5000Z 9 FSKL4010 002 10 VKZ4777 001 11 FSYA4002 001 12 FSJB3001 00A 13 FSKM2004 002SSF 14 QAMO160 001 0158 001 16 FSJD2034 001 17 4036 043 18 VND3046 001 20 RM RK31 21 KIT 1 KDGS717K SCREW1 KIT 2 KDSX959 SCREW2 DO gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt INST BOOK SPA ITA SWE FIN INST BOOK 1 ENG GER FRE DUT
20. B ZERO CROS BALANCE DETECTOR THEBLE VOLUME 2 FENDER REAR LERT 0 to 55 dB A dB BALANCE FENDER FRONT VOLUME 2 0 to 55dB BALANCE FENDER FRONT VOLUME 2 0 to 55dB BALANCE FENDER REAR E RIGHT 12 dB 28 Functions Serial data input output Input A right source Ground Input B right source output left rear Electronic filtering for supply output left front Input C right source Treble control capacitor left channel or input from an external equalizer Reference voltage 0 5Vcc Bass control capacitor left cannel or output to an external equalizer Not used 2 3 4 5 6 7 8 Bass control capacitor left channel IVL Input volume 1 left control part 24 ILR 9 ILL Input loudness left control part 25 IVR Output source selector left channel Output source selector right channel Input loudness right channel Input volume 1 right control part Bass control capacitor right channel Not used Bass control capacitor right channel or output to an external equalizer Not used Treble control capacitor right channel or input from an external equalizer Input C left source Output right front Not used Output right rear Input B left source Supply voltage 2 20 Input A left source Serial clock input KS FX850R KS FX835R KS FX820R Block diagram
21. BUTTON OPEN LEVER SHEET KNOB SHEET MECHA SHEET SHEET MECHA BRACKET LCD MODULE LCD MODULE LCD MODULE MECHA BRACKET SHEET DETACH BUTTON REAR BRACKET SCREW SCREW SCREW SCREW 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 i 4 4 4 LENS D FUNC FOR RELEASE FOR LIGHT LENS FOR L LEVER TOP FOR OPEN LEVER FOR L LEVER R FOR L LEVER L FOR RELEASE LEV DAMPER L LEVER LOCK LEVER O L SLIDING SHEET KS FX850R KS FX820R KS FX835R REAR BKT ANT JA REAR BKT REG REAR BKT PIN JA REAR BKT CD IN Cassette mechanism assembly and parts list Block No CDS 801 pe 4 IAS CFD 40 PD 401 254476799580 4 2 DD T er CM zo NA CS AS TID JP BRS YLA Q E 17 2 cay A 8 Grease point 1 2 bd LL O LEN 315Y2 Grease point 2 2 Parts list Cassette mechanism Block No M2MM A _Parts number Patemme Ou _Bescrption Ama 1 0801 40075 BASE SPG 1 X 0801 1003S MAIN CHASSIS AS 2 X 0801 1002S SLIDE CHASSIS A 1 3 X 0801 1008S SIDE ASS Y 1 4 0801 10105 LIMIT 1 5 0801 10135 HANGER 1 9 1 0801 60025 FLYWHEEL ASSY F 1 10 0801 20035 GEAR BASE
22. F NC 15 4 BV x FWO L 2 PBFIN1 CXA25600 MSOUT 4 0 4 8415 FWD R 3 a D r3 PBGNO MSTC 13 4 4 0V 1 2M 4 12 Sz 929 PEHINI G1FB IO a 5 REWw L 5 SE G2rB 1t 1 IC402 4 4 6 9 u C422 84941 x x x 520 Q a 888 3 8 ST 854 8056 8 y cue g 3 gos S aaBar gt zarFz E e 1XeX3X4XsXeX7X8X3 X19 5 S m ejm 25195 8 3 3 8 0 045 X E 9 5 S 41 SIS 4 S 44 C410 2 6 7 1 sy zr zY r zY zY a r ay Ra 21 s s sf sf sf af 3 s S3 C425 nd 0 01 T i i m 5 Sv 8x 1 a g 5 0 1 E a pa C424 _ E m G 2 x n 3 8 sm 5 gt qi 7 Ru I 5 S 3 amp 5 S S g 5 a 11 S i 8 3 o 29 x x S gt gt gt gt gt gt gt gt gt amp a a a gt 255 gt gt gt gt gt S ET 274 sts l 3 3 5 o ol 8 el S oj s 4 4 sl 4 solo oo gays ysis 9581214617185 S 50 2250525 690845 5 CJ401 Per oN T gt 2 58 22 s a Fe NOTES 1 VOLTAGES ARE DC MEASURED WITH A DIGITAL VOL
23. INSTRUCT SHEET 1 SWE FIN INSTRUCT SHEET 1 DUT SPA ITA INSTRUCT SHEET 1 ENG GER FRE WARRANTY CARD 1 PLUG NUT 1 MOUNT BOLT 1 LOCK NUT 1 WASHER 1 HOOK 2 MINI SCREW 2 THEFT PREVENTIO SHEET 1 THEFT PREVENTIO HARD CASE 1 MOUNTING SLEEVE 1 CAR CABLE 1 KS FX850R PLUG CORD 1 KS FX820R 835R PLATE 1 SHEET 2 SERIAL TICKET 1 REMOCON 1 KS FX850R 835R BATTERY 1 KS FX850R 835R SCREW PARTS 1 A5 A9 SCREW PARTS KIT A10 A11 A17
24. KS FX850R KS FX820R KS FX835R KS FX850R KS FX820R KS FX835R JVC JVC VICTOR COMPANY OF JAPAN LIMITED MOBILE ELECTRONICS DIVISION 10 1 1Chome Ohwatari machi Maebashi city Japan SERVICE MANUAL CASSETTE RECEIVER KS FX850R KS FX820R KS FX835 R Area Suffix E Continental Europe KS FX850R AM DOH Ded ko reson mination Remote controller Remote controller No 49549 Printed in Japan 200002 V KS FX835R Blue amp Red KS FX820R White Contents Safety precaution 1 2 Block diagram 2 21 Instructions 1 3 18 Standard schematic diagrams 2 22 Disassembly method 2 1 Printed circuit board 2 25 Adjustment method 2 8 3 1 1 Description of major ICs 2 12 This service manual is made from 100 recycled paper No 49549 COPYRIGHT 2000 VICTOR COMPANY OF JAPAN LTD Feb 2000 Safety precaution CAUTION 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 KS FX850R
25. O MONO AN N gt Se Inrvl Lgs SW PWS FSMW1081A 7 707770707010000 22 9 CN6o1 GNZ0006 001 00000000000000099000000000000000 m EN601 5 4 5 2 GSW0B63 001 EON AF REG 00 0000000000000 07777777770777070707007 RND WW Q m AAAS FEN DUE ss 0 A NND LOUD LcocE LCDDA 3 LCDCL AERA 100 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 ENC Rese R653 47K 2 a atiam 220 2 x 2 5 25v 1 sea 542 a 10 15 Eu 508 55 8 8 a S65 2 5V 2 5V 540 Oro B ses G9 m m 566 2 5 2 5V 539 64 ses 838 7 567 2 5 567 6 2 5v 538 DIMMER 44 568 2 5 G9 837 69 537 Las 15 Kev S
26. OR ASO 2 SURGE TSD 2 22 74 126 12801 Buffer KS FX850R KS FX835R KS FX820R 1 Pin layout 2 Function gt 84 Inputs Outputs 2 13 4 L 5 10 6 9 7 8 3 Block diagram Vcc Vcc 1 m 1A 2A 1Y 5 51 Input 4A 2Y CL 1 O 5 1C 777 777 S 2C C Output 3 2Y Sample as Load Circuit 1 4 Output dx 3Y O Sample as Load Circuit 1 Output 4Y O 4 Sample as Load Circuit 1 RPM6938 SV4 IC602 Remote control receiver 4 1 1 AMP IV conversion PD Detector for trimming circuit magnetic shield Vcc Rout GND KS FX850R KS FX835R KS FX820R LC75873NW IC601 LCD Driver 1 Block Diagram 90 VDD1 O4 VDD2 COMMOM DRIVER SEGMENT DRIVER E d VDD VSS SL 2 Pin Functions 1 66 53 568 O 87 69 cows 0 CLOCK GENERATOR SHIFT REGISTER ADDRESS DETECTOR o Ls omeno 2 18 Description Segment Output Common Driver Output Power Supply Connection Used for ap
27. RI Lep x Lee 1 1 55 1 WA 5 TES BE ona ECTS g cJ 5 de R a des a 318 GW r T E i fal at usa zx i fe 5 ae t 25 o 5 4 B amp als 2000 g 8 2 S 2 8 8155 2 ege B 5 sls 23593 5 ie BLASS 8 43 HI 325227 gy x OPNO 8 2 1 ERE B OPEO 8 alz 215 oa M S 8 8 ITA 82 m Xp ges a 8 g T sus ME eoe 8 Q 88 g 881 AD EEL OBEDE 5 2 i bi Es i 206 ols 9020 X W 8G0E VW 2 iyi 5020 X W 9S0EVW ease ee aaa a ee ee a al 8 5 j EE 5 d EZD EZEN 2020 X W SGOEVW TSE SP_ rj t X W SGOE VR E Cibelli TS ST J 5 BB SS 55768 0556 29988 TIREE 333 8 58 Mechanism control circuit section
28. T METER WITHOUT INPUT SIGNAL CONDITION TAPE MODE TAPE SIGNAL 2 UNLESS OTHERWISE SPECIFIED ALL RESISTORS ARE 1 4W 57 OR 1 10W 5 METAL GLAZE RESISTOR ALL CAPACITORS ARE 50V CERAMIC CAPACITOR ALL RESISTANCE VALUES ARE IN ALL CAPACITANCE VALUES ARE IN sF P pF ALL E CAPACITORS ARE SHOWN IN THE FORM OF CAPACITANCE 4F RATED VOLTAGE V LCD amp Key control circuit section KS F X850RE KS FX835RE KS FX820RE LCD1 QLDO113 001 QLDO123 001 9 00 124 001 NOTES D602 D603 D604 D605 LNJ308681 1 3 X SML 3410VT JK X LNJ308G81 1 3 X 1 VOLTAGES ARE DC MEASURED WITH A DIGITAL VOLT METER WITHOUT INPUT SIGNAL D607 D608 D609 D610 11 CONDITION FM MODE DIMMER ON 1 13 14 XD615 16 2 UNLESS OTHERWISE SPECIFIED D617 618 D619 0620 0621 ALL RESISTORS 1 4W 5 CARBON RESISTOR OR 1 4W 1 10W 5 METAL GLAZE RESISTOR ALL CAPACITORS ARE 50V CERAMIC CAPACITOR DBeeDBem 0624 KD625 0626 ALL RESISTANCE VALUES ARE IN D627 ALL CAPACITANCE VALUES ARE IN F P pF D641 D642 643 NSPW310BS B NSPB320BS VP NSPW310BS B ALL E CAPACITORS ARE SHOWN IN THE FORM OF CAPACITANCE F RATED VOLTAGE V RH645 R646 USED NOT USED NOT USED Q641 0642 USED NOT USED NOT USED H641 XH642 XH643 470 390 1 OK H644 470 ORO ORO STERE
29. TER WITHOUT INPUT SIGNAL ALL CAPACITORS ARE SOV OR 25V CERAMIC CAPACITOR ALL RESISTANCE VALUES ARE IN OHM ALL RESISTORS ARE 1 10W 1 4W 5 ALL CAPACITANCE VALUES ARE IN uF p CONDITION FM CONDITION FM MODE 2 1 NOTES t section In circul
30. Unsolder the soldering j on the reel disc PW B 2 Push the seven tabs k on the bottom of the cassette mechanism assembly in the direction of the arrow B Removing the motor and the sub motor See Fig 10 and 11 Unsolder the two soldering of the motor and the sub Soldering j motor Sub motor 2 Release the sub motor from the three tabs m Push the sub motor upward and pull out it Tab 3 Remove the belt on the bottom of the cassette mechanism assembly and remove the two screws G attaching the motor G Load arm UA ATTENTION The motors can be detached before removing the load arm Fig 11 Motor 2 6 Removing the flywheel See Fig 10 and 12 1 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 P W B 2 Remove the belt on the bottom of the cassette mechanism ass y 3 Remove the slit washer attaching the flywheel on the upper side of the cassette mechanism ass y and pull out the flywheel downward Then remove another flywheel in the same way ATTENTION When reassembling make sure to use a new slit washer m Removing the reel disc ass y See Fig 12 to 14 Prior to performing the following procedure remove the head relay P W B the load arm the sub chassis the cassette holder and the holder arm 1 Disengage the p
31. art n inside of the reel driver which engages with the shaft using a pincette or something like that Then remove the reel driver from the shaft 2 Remove the reel driver spring and the reel table Soldering j KS FX850R KS FX835R KS FX820R Reel disc P W B Cassette mechanism ass y Motor Plate Belt G Fig 10 Reel driver Slit washer The part n o Reel disc ass y I Tabs o Push aside the gear Reel disc ass y II Reel driver Fig 12 Reel driver Reel driver spring Reel table Fig 14 Slit washer N gt f N 2 7 KS FX850R KS FX835R KS FX820R Adjustment method Test instruments required for adjustment 1 Digital oscilloscope 100MHz 2 Frequency Counter meter 3 Electric voltmeter 4 Wow amp flutter meter 5 Test Tapes MC 109C For TAPA CURL confirmation without Padd type VATA For DOLBY level measurement VT739 For playback frequency measurement VT712 For wow flutter amp tape speed measurement VT70S For head azimuth measurement 6 Torque gauge Cassette type for CTG N mechanism adjustment B Measuring conditions Amplifier section 2 8 Power supply voltage DC14 4V 10 5 16V Load impedance 4Q 2Speakers connection Lirig OUL iiu cp liec eink 20k Q mStandard volume po
32. being within 1 0dB from adjustment value HEAD Tape guide Tape curl NG Azimuth screw A Azimuth screw B 45 2 TapeSpeedand Wow amp Flutter 1 Check to see if the reading of the frequency counter amp W ow flutter meter is within 2940 3090 Hz FWD REV and less than 0 3596 JIS RMS 2 In case of out of specification adjust the motor with a built in volume resistor Built in volume resistor Tape Speed 2940 3090Hz Wow amp Flutter Less than 0 3596 JIS RMS 3 Playback Frequency response 1 Play the test tape VT724 1kHz back and set the volume position at 2V 2 the test tape VT739 back and confirm 0 3dB at1kHz 10kHz and 4 2dB at 1kHz 63Hz 3 When 10 2 is out of specification it will be necessary to read adjust the azimuth Speaker out 1kHz 10kHz 0dB 3dB 63Hz 1kHz 4dB 2dB KS FX850R KS FX835R KS FX820R Descrption of major ICs 25600 401 Dolby B type noise reduction system with play back equalizer amp 1 Pin layout amp block d 2 18 TAPESW MUTESW Function Symbol Function PBTC1 Playback equalizer amplifier DIREF Resistance for setting the reference PBOUT1 GND Ground TAPEIN2 TAPE input OUTREF1 TAPEIN1 OUTREF2 Output reference Vcc NC PBOUT2 Playback equalizer a
33. coi A m ED E 2 7k 4 Bk 4 2k 820 560 KEYO COM3 2 LCD DRIVER 2 5V 534 m s Ed pal 5506 5605 5504 5603 5602 5601 m 79 4 ov GO voo 10601 692 9 9 9 vos EAT x ls 3 27 6 voo 5 595 o E m gt 5 5 R644 x a 58 as Lw 6257 535 z z z z n 8 ge E ase 552 452 436 852 856 556 85 855 8 470 1 8w1 ge E xg sao 330 15 ol 4 LE 1 4 2 5V 529 253 855 852 852 SIS 852 ESS 85 828 4 89 i 55 2 C Reit 610 R609 ReoB 7 5 R606 A A A S a BV EN 8 219 EE ss Be Dek 920 ES MK SG ee 7v 08 692 82 d 9 gt 8 oN S2 Looe 4 N E 526 a S26 se s610 S609 4 5608 5607 8 UN Eo db EE _ LES LCDDA r669 8670 8674 14 9 sm ls 2 bse i mii i eim 58 d d 228 S24 F SKIP o 9 T I AI fy MET T ty _ 8 VED o2 sy 523 b a 5 m 9 le e B 28 815 5 OIE EI 3 8 5 gad WS o
34. ge adjustable 12 GND Ground KS FX850R KS FX835R KS FX820R 178018 551 IC701 Main system control CPU 1 Pin layout 80 61 1 60 20 41 21 40 2 Pin function Pin Port Name Descriptions 1 KEY 0 Key input 0 2 KEY 1 1 3 KEY 2 Key input 2 4 LEVEL Level meter input 5 SM S meter level input 6 SQ S Quality level input 7 LCDCE O CE output to LCD driver 8 LCDDA O Data output to LCD driver 9 LCDSCK Clock output to LCD driver 10 BUSI O I O selector output for J BUS H OUT L INPUT 11 OPEN Door open detect 12 BUSSI J BUS Data input 13 BUSSO O J BUS Data output 14 BUSSCK J BUS in output 15 NC 16 17 18 19 INLOCK 20 21 GNDPORT Port GND 22 VDDPORT Port Vdd 23 NC O Non connect 24 AF check output L AF check 25 MONO O Monaural on off selecting output H mono on 26 FM AM O switching output L FM H AM 27 SEEK STP O Auto seek stop selecting output Seek L Stop 28 NC Pulse signal input port for Cruise control 29 IFC midle frequency counter input 30 VDDPLL PLL Vdd 31 FMOSC FM AM limited generator
35. in the direction of the arrow BRemoving the cassette mechanism assembly See Fig 1 to 3 1 Disconnect the 6pin harness from connector CN402 and the card wire from CN403 on the mecha control P W B Refer to Fig 1 and 2 Fig 2 2 Remove the four screws on the bottom of the cassette mechanism B Cassette mechanism ass y 2 4 Removing the head relay P W B See Fig 4 1 Unsolder the soldering b on the head relay P W B 2 Remove the screw C attaching the head relay PW B 3 Remove the head relay P W B in the direction of the arrow while releasing the two joints c Removing the load arm See Fig 5 1 Remove the E washer attaching the load arm using a pincette or something like that and remove the spring d 2 Move the part of the load arm marked upwards to release it from the axis of rotation Then rotate the load arm in the direction of the arrow to remove it from the cach Removing the sub chassis See Fig 6 Prior to performing the following procedure remove the head relay PW B 1 Remove the screw D attaching the sub chassis 2 Push the tab e in the direction of the arrow to detach the one side of the sub chassis Then release the sub chassis from the tab f BRemoving the cassette holder and the holder arm in the eject mode See Fig 7 and 8 Prior to performing the following procedure remove the head relay PW B the load arm and the sub chassis 1 Remove the screw
36. item Parts number awf Desin Ara 67 68 71 72 78 74 75 76 82 84 85 86 87 91 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 1 0801 40085 1 0801 40095 1 0801 40115 1 0801 50015 1 0801 50025 1 0801 50035 1 0801 50045 1 0801 50055 21732 6280 365 1 0801 70015 1 0801 70035 1 0801 70055 1 0801 70245 1 0801 70265 1 0801 70145 10801 7009 05 10801 7009 15 10801 7010 05 10801 7010 15 10801 7015 05 10801 7015 15 10801 7015 25 10801 7015 35 10801 7015 45 10801 7015 55 1 0801 70165 1 0801 70255 21382 3060 25 2 1032 0025 25 21332 0035 15 21112 6035 25 2 1816 0032 85 21812 0032 025 1 0036 50245 2 1821 0040 015 21821 0040 025 2 1711 5040 165 REEL SPG LOAD ARM SPG HOLDER STAB SPG BELT FELT AZIMUTH SCR FELT REEL WASHER LUG PLATE REEL PCB DL SW MATSUSHITA SW PHOTO SENSOR FLAT CABLE 10P HEAD M MOTOR WIRE M MOTOR WIRE S MOTOR WIRE S MOTOR WIRE HEAD WIRE BLACK HEAD WIRE BROWN HEAD WIRE RED HEAD WIRE ORANG HEAD WIRE YELLO HEAD WIRE WHITE HEAD PCB CONN S6B PH K S PLAIN B TYPE SCREW PLAIN S TYPE PRECISIO SCREW PLAIN LMW S PSW S PSW S REEL B PSW PSW S E RING oa a po sea po ae a a a fo po a a a po wp 7 5 18 5 1 0 11 18 5 1 0 ESE22MH2L ALPS SPPB64 ON2170 QR FS MITSUMIP 5544 BLACK RED ORANGE BROWN 2 3 6 0 2 2 5 M2 3 5 2 6 3 5 1 6 3 2 0 35 1 2 3 2 0 25 1 5
37. mplifier output LINEOUT1 PBTC2 Playback equalizer amplifier capacitance TCH1 NC PBFB2 Playback equalizer amplifier feedback MSLPF Cut off frequency adjustment of the music sensor LPF PBRIN2 Playback equalizer amplifier input G2FB Music signal interval detection Music signal interval detection PBGND Playback equalizer amplifier ground MSTC Time constant for detecting music signal interval PBFIN2 Playback equalizer amplifier input MSOUT VCT Center NC No use NRSW Dolby NR control PBREF Playback equalizer amplifier reference MUTESW Mute function control TAPESW Playback equalizer amplifier control PBFIN1 Playback equalizer amplifier input DRSW MSMODE MSSW Head select control Music sensor mode control Music sensor control PBGND PBRIN1 Playback equalizer amplifier ground Playback equalizer amplifier input NC TCH2 Time constant for the HLS LINEOUT2 Line output Playback equalizer amplifier feedback KS FX850R KS FX835R KS FX820R E BA4905 V3 10901 Regulator 1 Terminal layout
38. nel Confirm that current is being carried by connecting an extension cord jig Note Available to connect to the CP701 connector when in stalling the front panel Cassette mechanism Extension EXTKSRT002 18P to Cassette mechanism Ba 3 Front panel assembly V e EXTKSRT002 18P 2 10 KS FX850R KS FX835R KS FX820R mMechanism adjustment section Item Adjusting amp Confirmation Methods Adjust Std Value 1 Tape running adjustment 2 Azimuth adjustment confirmation a At Forward playmode using mirror tape make adjustment with Azimuth screw A and Azimuth screw B without curl of 4 parts of head tape guide b At Reverse play mode using mirror tape make adjustment with Azimuth screw A and Azimuth screw B without tape curl of 4 parts of head guide At Forward Reverse play mode make confirmation of no tape curl of 4 parts of head tape guide a At forward play mode make adjustment of peak of Lch Rch output with Azimuth screw A For Oscilloscope litharge corrugation set 45 as standard b At Reverse play mode make adjustment of peak of Lch Rch output with Azimuth screw B For Oscilloscope litharge corrugation set 45 as standard c With AC volt meter confirm the difference of output for 4ch between Lch Rch at forward play mode and Lch Rch Reverse play mode being within 3 0dB d After operation make confirmation of Lch Rch azimuth output
39. plying the LCD drive 2 3 bias voltage externally Must be connected to VDD2 when a 1 2 bias drive scheme in used Used for applying the LCD drive 1 3 bias voltage externally Must be connected to VDD1 when a 1 2 bias drive scheme in used Power supply connection Oscillator connection An oscillator circuit is formed by connecting an external resistor and capacitor to this pin Display off control input Chip enable input Synchronization clock input Serial data input DIMMER Control signal output Non connect 5 6579 IC71 RDS demodulator 1 Pin layout V 00 o gt e e 16 15 14 13 12 11 10 3 Block diagram MUX SCOUT ALIASING FILTER 2 Pin function KS FX850R KS FX835R KS FX820R R Symbol Function 1 QUAL Quality indication output RDDA RDS data output Vref Reference voltage output 0 5VDDA MUX Multiplex signal input 5V supply voltage for anarog part VSSA Ground for analog part CIN Subcarrier input to comparator 2 3 4 5 VDDA 6 7 8 SCOUT Subcarrier output of reconstruction filter 57kHz BANDPASS 8th ORDER E RECONSTRUCTION PR ER RM QUALITY BIT 1 FILTER DIVIDER GENERATOR 9 MODE Oscillator mode test sontrol input 1
40. se side orn _ ran Sine SEDES DE UPS 4 10560 SO 7 oo L rn Ve E Reel board ilMecah control board A SS 27 VR402 o La FSMW1093A 2 ze ces m B409 2 5 R422 PARTS LIST KS FX850R KS FX835R KS FX820R All printed circuit boards and its assemblies are not available as service parts Areas suffix E Continental Europe Contents Exploded view of general assembly and parts list 3 3 Cassette mechanism assembly and parts list 3 5 Electrical ligt 3 10 acking materials and accessories parts list 3 16 Parts list General assembly Block No M1MM Parsmmber Paremme _______ 1 1 1 2 1 3 2 1 2 2 DO 11 14 15 17 18 21 22 23 24 26 27 28 30 31 32 33 34 35 40 41 42 43 45 46 47 ZCKSFX850R FB ZCKSFX820R FB FSJC1060 001 FSJC3014 001 FSJC4003 031 VKW4947 002
41. sition Balance and Bass Treble volume Fader Center Indication 0 Loudness Dolby NR Sound Cruise Off following conditions Playback the test tape VT721 AM mode 999kHz 62dB INT 400Hz 30 modulation signal on receiving FM mono mode 97 5MHz 66dB INT 400Hz 22 5kHz deviation pilot off mono FM stereo mode 1kHz 67 5kHz dev pilot7 5kHz dev Output level OdB 1 V 50 terminal KS FX850R KS FX835R KS FX820R Arrangement of adjusting amp test points Cassette mechanism Surface Motor assembly Tape speed adjust 9 Azimuth screw Forward Playback head Azimuth screw B Reverse Head section view Azimuth screw B Azimuth screw A Reverse Forward Playback Head 2 9 KS FX850R KS FX835R KS FX820R minformation 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 Asa U shape type top cover is employed this type of extension cord is needed to check operation of the mechanism assembly after disassembly Extension cord EXTKSRT002 18P 18 pin extension cord For connection between mechanism assembly and main board assembly Check for mechanism driving section such as motor etc e iDisassembly method Remove the bottom cover Remove the front panel assembly Remove the top cover Install the front pa
42. z zs eor Y amp or 1441 1437 nous 516 ja g B Jd anc sd C D 5 9 W 5 5 5 5 5 5 5 5 55 55 5 sco is 55 Ini oO n E iror uvas o zzz zx x x reas Suo av Y 338A AE EE 2e 2 ano 8 y ano A Orv lt E z juin o oo c tn of o a lo a gt 1 4 5 5 Jana x on ae Ix LT S 1519333333155555 8 5 1051 L 1 9 0 2 30 3 9 9 el ees lt qt m E jZ a 875 x 5 2 C n 1 0 O o o o x x 9 gt gt EP NPN o o 0 D QD Jeo Jo N o canoni 10 206 ono vH 15 2 X P 1 4 gt 2 rok oe ono S Lu s gor lt 73

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