JVC ks-fx834r Service Manual
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JVC ks-fx834r Service Manual

JVC ks-fx834r Service Manual

Cassette receiver
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3 7 63 1515 0
SERVICE MANUAL
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L 13942296513
Contents
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.
http://www.xiaoyu163.com
CASSETTE RECEIVER
KS-FX834R
Safety precaution
Disassembly method
Adjustment method
Description of major ICs
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ao
u163
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This service manual is printed on 100% recycled paper.
COPYRIGHT
2000 VICTOR COMPANY OF JAPAN, LTD.
http://www.xiaoyu163.com
2 9
8
Q Q
3
6 7
1 3
1 5
1-2
1-3
1-10
1-14
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KS-FX834R
9 4
2 8
0 5
8
2 9
9 4
2 8
Area Suffix
E ---- Continental Europe
m
9 9
9 9
No.49571
Sep. 2000

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  • Page 1 KS-FX834R 3 7 63 1515 0 SERVICE MANUAL CASSETTE RECEIVER KS-FX834R L 13942296513 Area Suffix E ---- Continental Europe Contents Safety precaution Disassembly method Adjustment method 1-10 Description of major ICs 1-14 u163 No.49571 This service manual is printed on 100% recycled paper.

  • Page 2: Safety Precaution

    KS-FX834R 3 7 63 1515 0 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.

  • Page 3: Disassembly Method

    KS-FX834R 3 7 63 1515 0 Disassembly method 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. Fig.1 Removing the front chassis (See Fig.2~3) Remove the two screws A attaching the front chassis.

  • Page 4: Removing The Bottom Cover

    KS-FX834R 3 7 63 1515 0 Removing the bottom cover Bottom cover (See Fig.5) Turn the body upside down. 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 body.
  • Page 5 KS-FX834R 3 7 63 1515 0 Removing the Cassette mechanism Cassette mechanism assembly assembly (See Fig.8) Remove the front chassis. Remove the bottom cover. Remove the main amplifier board assembly. Remove the fore screws F attaching the cassette mechanism assembly from the top cover.
  • Page 6 KS-FX834R 3 7 63 1515 0 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. For the 6pin harness extending from connector CN402 on the mecha control P.W.B, disconnect it from the head relay P.W.B.
  • Page 7 KS-FX834R 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 8 KS-FX834R 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 9: Removing The Flywheel

    KS-FX834R 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 10: Adjustment Method

    KS-FX834R 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. Wow & flutter meter 5.
  • Page 11 KS-FX834R 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 12 KS-FX834R 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 13 KS-FX834R 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 14: Description Of Major Ics

    KS-FX834R 3 7 63 1515 0 Description of major ICs CXA2560Q (IC401) : Dolby B type noise reduction system with play back equalizer amp. 1.Pin layout & block diagram 7k/12k PBFB2 MSMODE 100k OFF/B PBRIN2 DRSW 300k MS MODE...
  • Page 15 KS-FX834R 3 7 63 1515 0 BA4905-V3 (IC901) : Regulator 1.Terminal layout 2.Block diagram REGULATOR L 13942296513 RESET RESET COMP VDD 5.7V CD 8V AUDIO 9V CTRL ILM 10V 3.Pin function Pin no. Symbol Function RESET If VDD voltage becomes 4V or less.RESET output becomes low level.
  • Page 16 KS-FX834R 3 7 63 1515 0 UPD178018AGC-551 (IC701) : Main system control CPU 1. Pin layout 2. Pin function Pin No. Port Name Descriptions KEY 0 Key input 0 KEY 1 Key input 1 KEY 2 Key input 2...
  • Page 17 KS-FX834R 3 7 63 1515 0 UPD178018AGC-551 Pin No. Port Name Descriptions FF/REW Output for input signal level switching for MS L : FF,REW H : PLAY FWD,REV running direction switch signal input DOLBY Dolby on "H" output MSIN...
  • Page 18 KS-FX834R 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 1-18 http://www.xiaoyu163.com...
  • Page 19 KS-FX834R 3 7 63 1515 0 HD74HC126FP-X (IC801) : Buffer 1. Pin layout 2. Function Inputs Outputs 3. Block diagram Output Input L 13942296513 Output Sample as Load Circuit 1 Output Sample as Load Circuit 1 Output Sample as Load Circuit 1...
  • Page 20 KS-FX834R 3 7 63 1515 0 RPM6938-SV4 (IC602) : Remote control receiver Comp Rout Detector conversion trimming circuit magnetic shield LB1641 (IC402) : DC Motor Driver 2. Pin Functions 1. Pin Layout Input Output Mode OUT1 OUT2 Brake L 13942296513...
  • Page 21 KS-FX834R 3 7 63 1515 0 LC75873NW (IC601) : LCD Driver 1.Block Diagram VDD1 COMMOM SEGMENT DRIVER DRIVER VDD2 CLOCK SHIFT REGISTER GENERATOR ADDRESS DETECTOR 2.Pin Functions L 13942296513 Pin No. Symbol Description 1~66 S3~S68 Segment Output. 67~69 COM1~3 Common Driver Output.
  • Page 22 KS-FX834R 3 7 63 1515 0 SAA6579T-X (IC71) : RDS demodulator 1. Pin layout 2. Pin function Symbol Function QUAL Quality indication output RDDA RDS data output Vref Reference voltage output (0.5VDDA) Multiplex signal input VDDA +5V supply voltage for analog part...
  • Page 23 KS-FX834R 3 7 63 1515 0 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 BASS TREBLE +20 to -31 dB...
  • Page 24 KS-FX834R 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED MOBILE ELECTRONICS DIVISION PERSONAL & MOBILE NETWORK B.U. 10-1,1Chome,Ohwatari-machi,Maebashi-city,Japan Printed in Japan (No.49571) 200009(V) http://www.xiaoyu163.com...
  • Page 25 FMEO AMEO J801 FFREW FM/AM MOTOR IC701 S1~S68 COM1~COM3 JBUSSI JBUSSO IC601 LCDCE JBUSIO SI/SO LCDCL JBUSSCK LCDDA DRIVER IC801 ENC1,ENC2,KEY0,KEY1,KEY2 JVC BUS KEY0 LCDCE,LCDDA,LCDCK,REMOCON ~KEY2 KEY SWITCH ENCODER ENC1 ENC2 IC602 u 1 6 3 REMOCON REMOCON RECEIVER http://www.xiaoyu163.com...
  • Page 26 http://www.xiaoyu163.com 3 7 63 1515 0 < M E M O > L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 27: Standard Schematic Diagrams

    KS-FX834R Standard schematic diagrams 3 7 6 3 1 5 1 5 0 Tuner & Main circuit section 1 3 9 4 2 2 9 6 5 1 3 TUNER SIGNAL CD CHANGER SIGNAL TAPE SIGNAL w w w...
  • Page 28 KS-FX834R KS-FX834R 3 7 6 3 1 5 1 5 0 Mechanism control circuit section 1 3 9 4 2 2 9 6 5 1 3 TAPE SIGNAL w w w u 1 6 3 http://www.xiaoyu163.com...
  • Page 29 KS-FX834R 3 7 6 3 1 5 1 5 0 LCD & Key control circuit section 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 Note:3113sw FSDH3113SW-KS-FX850RE/KS-FX835RE/KS-FX820RE/KS-FX834RE http://www.xiaoyu163.com...

  • Page 30: Printed Circuit Boards

    KS-FX834R KS-FX834R Printed circuit boards 3 7 6 3 1 5 1 5 0 Front board (Forward side) Main board Front board (Reverse side) 1 3 9 4 2 2 9 6 5 1 3 Reel board Mecha control board...

  • Page 31: Parts List

    KS-FX834R 3 7 63 1515 0 PARTS LIST [ KS-FX834R ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix E ----------- Continental Europe L 13942296513 - Contents - Exploded view of general assembly and parts list...
  • Page 32 KS-FX834R 3 7 63 1515 0 < M E M O > L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 33: Exploded View Of General Assembly And Parts List

    KS-FX834R 3 7 6 3 1 5 1 5 0 Exploded view of general assembly and parts list Block No. 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 LCD1...
  • Page 34 KS-FX834R KS-FX834R 3 7 6 3 1 5 1 5 0 Parts list (General assembly) Parts list (General assembly) Block No. M1MM Block No. M1MM Item Parts number Parts name Q'ty Description Area Item Parts number Parts name Q'ty...

  • Page 35: Cassette Mechanism Assembly And Parts List

    KS-FX834R 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 36 KS-FX834R 3 7 63 1515 0 Parts list (Cassette mechanism) Block No. M2MM 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 37 KS-FX834R 3 7 63 1515 0 Parts list (Cassette mechanism) Block No. M2MM 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 38 KS-FX834R 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 39 KS-FX834R 3 7 63 1515 0 Grease point 2/2 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 40 KS-FX834R 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-107Z E.CAPACITOR 100MF 20% 16V C 308 QERF1HM-225Z E.CAPACITOR 2.2MF 20% 50V NDC21HJ-470X C.CAPACITOR...
  • Page 41 KS-FX834R 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 D 981 CRS03-W SB DIODE R 34 NRSA02J-102X MG RESISTOR D 982...
  • Page 42 KS-FX834R 3 7 63 1515 0 (Main board) Electrical parts list Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area R 701 NRSA02J-271X MG RESISTOR R 976 NRSA02J-104X MG RESISTOR R 702...
  • Page 43 KS-FX834R 3 7 63 1515 0 Electrical parts list (Front board) Block No. 03 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area C 601 NBE20JM-475X TS E CAPACITOR R 620 NRS181J-561X MG RESISTOR...

  • Page 44: Packing Materials And Accessories Parts List

    KS-FX834R 3 7 63 1515 0 Packing materials and accessories parts list Block No. Block No. A1,A2,A3,A18 A10,A11 KIT1:A5 ~ A9 A20,A21 L 13942296513 : Remocon SCREW KIT 1 : Plug nut : Trim Plate : Hook : Mount bolt...

  • Page 45: Parts List (Accessories)

    KS-FX834R 3 7 63 1515 0 Parts list (Packing) Block No. M3MM Item Parts number Parts name Q'ty Description Area FSPE3004-091 CARTON FSPH1018-002 PAPER CUSHION VPE3005-064 POLY BAG FSPG4002-001 POLY BAG INSTRUCTION QPA00801205 POLY BAG SCREW KIT 1 (Accessories) Parts list Block No.

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