JVC KS-FX901 Service Manual
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JVC KS-FX901 Service Manual

JVC KS-FX901 Service Manual

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3 7 63 1515 0
SERVICE MANUAL
TE
L 13942296513
Contents
www
.
http://www.xiaoyu163.com
CASSETTE RECEIVER
KS-FX901/KS-FX801
KS-FX901
RM-RK31
KS-FX801
RM-RK31
Difference
Front
point
panel
KS-FX901
Light Gold
KS-FX801
Metallic Gray
Safety precaution
Disassembly method
Adjustment method
Description of major ICs
x
ao
y
i
COPYRIGHT
2001 VICTOR COMPANY OF JAPAN, LTD.
http://www.xiaoyu163.com
8
LOUD
LOUD
Multi
DISP
DISP
Music
Scan
SCAN
SCAN
MO
7
8
9
10
1 1
12
Q Q
3
6 7
1 3
LOUD
LOUD
Multi
DISP
DISP
Music
Scan
SCAN
SCAN
7
8
9
10
1 1
12
MO
Trim
plate
Light Gold
Gray
u163
.
KS-FX901/KS-FX801
2 9
9 4
2 8
Area Suffix
U
1 5
0 5
8
2 9
9 4
LCD
color
Multi color
White
1- 2
1- 3
1-11
1-15~25
m
co
9 9
Other areas
2 8
9 9
No.49627
FEB. 2001

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Summary of Contents for JVC KS-FX901

  • Page 1 KS-FX901/KS-FX801 3 7 63 1515 0 SERVICE MANUAL CASSETTE RECEIVER KS-FX901/KS-FX801 KS-FX901 Area Suffix LOUD LOUD Multi DISP DISP Music Scan Other areas SCAN SCAN RM-RK31 L 13942296513 KS-FX801 LOUD LOUD Multi DISP DISP Music Scan SCAN SCAN RM-RK31...

  • Page 2: Safety Precaution

    KS-FX901/KS-FX801 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: Disassembly Method

    KS-FX901/KS-FX801 3 7 63 1515 0 Disassembly method Removing the front chassis (See Fig.1~2) Remove the two screws A attaching the front chassis. 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.

  • Page 4: Removing The Bottom Cover

    KS-FX901/KS-FX801 3 7 63 1515 0 Removing the bottom cover (See Fig.4) Turn the body upside down. Bottom cover 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-FX901/KS-FX801 3 7 63 1515 0 Removing the Cassette mechanism Cassette mechanism assembly assembly (See Fig.7) 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-FX901/KS-FX801 3 7 63 1515 0 Cassette mechanism ass’y <Removal of the cassette mechanism> Removing the head amplifier board. Head relay (See Fig.1 and 2) board For the 6pin wire extending from connector CN402 on the head amplifier board, disconnect it from the head relay board.
  • Page 7 KS-FX901/KS-FX801 3 7 63 1515 0 Head relay board Removing the head relay board (See Fig.4) Unsolder the soldering b on the head relay board. Remove the screw C attaching the head relay board. Remove the head relay board in the direction of the...
  • Page 8 KS-FX901/KS-FX801 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 board 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-FX901/KS-FX801 3 7 63 1515 0 Removing the flywheel Cassette mechanism ass’y Reel disc board (See Fig.10 and 12) Soldering j Prior to performing the following procedure, remove the head relay board, the load arm, the sub chassis, the cassette holder, the holder arm and the reel disc Tab k board.
  • Page 10 KS-FX901/KS-FX801 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 11: Adjustment Method

    KS-FX901/KS-FX801 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 Volume position is about 2V at speaker output with 5.
  • Page 12 KS-FX901/KS-FX801 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 13 KS-FX901/KS-FX801 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 14 KS-FX901/KS-FX801 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 15: Description Of Major Ics

    KS-FX901/KS-FX801 3 7 63 1515 0 Description of major ICs AN80T05 (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...
  • Page 16 KS-FX901/KS-FX801 3 7 63 1515 0 LA4743K (IC301) : Power amp. 1.Block diagram 2200 F 0.022 F Vcc 1/2 Vcc 3/4 IN 1 OUT 1+ 0.22 F OUT 1- PWR GND1 Protective circuit OUT 2+ IN 2 OUT 2- 0.22 F...
  • Page 17 KS-FX901/KS-FX801 3 7 63 1515 0 2.Terminal layout 3.Pin function LA4743B Pin No. Symbol Function Header of IC Power GND OUTRR- Outpur(-) for front Rch Stand by input STBY Output (+) for front Rch OUTRR+ VCC1/2 Power input OUTRF-...
  • Page 18 KS-FX901/KS-FX801 3 7 63 1515 0 LC72366-9987 (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 19 KS-FX901/KS-FX801 3 7 63 1515 0 LC72366-9987(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 20 KS-FX901/KS-FX801 3 7 63 1515 0 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 BIAS PBGND TAPESW MUTE...
  • Page 21 KS-FX901/KS-FX801 3 7 63 1515 0 HD74HC126P (IC801) : Changer control 1.Pin arrangement 2. Pin function Input Output ( TOP VIEW ) 3. Block diagram L 13942296513 u163 1-21 http://www.xiaoyu163.com...
  • Page 22 KS-FX901/KS-FX801 3 7 63 1515 0 KIA7810PI (IC902) : Regulator 1.Pin layout 2.Block diagram 1 INPUT 1 2 3 3 OUTPUT 2 GND L 13942296513 u163 1-22 http://www.xiaoyu163.com...
  • Page 23 KS-FX901/KS-FX801 3 7 63 1515 0 LC75873NW (IC601) : LCD driver 1.Pin layout 2.Block diagram VDD1 COMON SEGMENT DRIVER DRIVER VDD2 CLOCK SHIFT REGISTOR GENERATOR ADDRESS DETECTOR 3.Pin function Pin No. Pin name Description Segment outouts for displaying the display data...
  • Page 24 KS-FX901/KS-FX801 3 7 63 1515 0 LB1641 (IC402) : DC motor driver 1. Pin layout GND OUT1 P1 IN2 VCC1 VCC2 P2 OUT2 2. Pin function Input Output Mode OUT1 OUT2 Brake CLOCKWISE COUNTER-CLOCKWISE Brake RPM6938-SV4 (IC602) : Remote sensor L 13942296513 1.Block diagram...
  • Page 25 KS-FX901/KS-FX801 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 26 KS-FX901/KS-FX801 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 200102 (No.49627) http://www.xiaoyu163.com...

  • Page 27: Block Diagram

    KS-FX901/KS-FX801 3 7 6 3 1 5 1 5 0 Block diagram REAR LEFT (-) FRONT LCH FM/AM REAR LEFT (+) TUNER FRONT LEFT (-) FRONT RCH IC161 IC301 FRONT LEFT (+) E.VOLUME REAR LCH POWER AMP FRONT RIGHT (-)

  • Page 28: Standard Schematic Diagrams

    KS-FX901/KS-FX801 KS-FX901/KS-FX801 3 7 6 3 1 5 1 5 0 Standard schematic diagrams Main amp section CJ321 IC301 LA4743K QAU0205-001 C362 0.22 C361 R353 R354 QNB0100-001 0.22 R343 R344 A.GND R333 R334 1/50 EVOLCLK R323 R324 1/50 4.7uH EVOLDA 2.2/50...
  • Page 29 KS-FX901/KS-FX801 3 7 6 3 1 5 1 5 0 LCD driver & Key control section QNZ0449-001 1 3 9 4 2 2 9 6 5 1 3 IC602 EN601 RPM6938-SV4 QSW0793-001 R657 REMOCON ACC5V R658 ENC1 ENC2 ENC2...
  • Page 30 KS-FX901/KS-FX801 KS-FX901/KS-FX801 3 7 6 3 1 5 1 5 0 Head amp & Mecha control section Q403 C415 2SB1322/RS/-T 0.01 R401 Q402 DTC114EKA-X CN403 QGF1219F1-10S 0.015 TAPE SIGNAL C411 Q401 1 3 9 4 2 2 9 6 5 1 3...

  • Page 31: Printed Circuit Boards

    KS-FX901/KS-FX801 3 7 6 3 1 5 1 5 0 Printed circuit boards Main board (Forward side) Main board (Reverse side) C901 IC901 TU9V PCNT CJ321 B904 IC901 C315 B905 R324 L901 L901 C362 C361 C361 C362 R343 CP801...
  • Page 32 KS-FX901/KS-FX801 KS-FX901/KS-FX801 3 7 6 3 1 5 1 5 0 Front board (Forward side) Mecha control board C423 D401 D601 IC602 R426 D629 R606 S605 R607 S613 R411 S614 S608 D628 R605 R604 D611 D613 D623 R424 D622...

  • Page 33: Parts List

    KS-FX901/KS-FX801 3 7 63 1515 0 PARTS LIST [ KS-FX901 ] [ KS-FX801 ] * All printed circuit boards and its assemblies are not available as service parts. Areas suffix U --------------------- Other Areas L 13942296513 - Contents -...
  • Page 34 KS-FX901/KS-FX801 3 7 63 1515 0 Exploded view of general assembly and parts list Block No. L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 35 MINI SCREW 1 LOCK LEVER(O.L.) FSKW4013-002 T.SPRING 1 FOR OPEN LEVER FSJC3014-001 CASS LID VKW4947-002 DOOR SPRING GE10005-002A FRONT PANEL 1 KS-FX901 GE10005-001A FRONT PANEL 1 KS-FX801 GE30113-003A FINDER ASSY 1 KS-FX801 GE30113-002A FINDER ASSY 1 KS-FX901 FSJK4009-001 REMOTE LENS...
  • Page 36 DETACH BUTTON VKW3001-330 COMP.SPRING 1 FOR DETACH BUTTON GE10006-001A REAR COVER FSYH4036-035 SHEET VKZ4777-001 MINI SCREW 4 FRONT+REAR QLD0163-001 LCD MODULE 1 KS-FX901 QLD0164-001 LCD MODULE 1 KS-FX801 QNZ0449-001 RUBBER CONNECTOR QNZ0450-001 RUBBER CONNECTOR GE30114-001A LCD CASE FSJK3028-001 LCD LENS FSYH4061-001...
  • Page 37 KS-FX901/KS-FX801 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 38 KS-FX901/KS-FX801 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 39 KS-FX901/KS-FX801 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 40 KS-FX901/KS-FX801 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 41 KS-FX901/KS-FX801 3 7 63 1515 0 Grease point 2/2 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 42 KS-FX901/KS-FX801 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 342 QERF1HM-225Z E CAPACITOR 2.2MF 20% 50V...
  • Page 43 KS-FX901/KS-FX801 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 753 SLR-56MC3F PILOT LAMP R 35 QRE141J-152Y C RESISTOR 1.5K 5% 1/4W...
  • Page 44 KS-FX901/KS-FX801 3 7 63 1515 0 Electrical parts list (Main board) Block No. 01 Item Remarks Item Parts number Parts name Remarks Area Parts number Parts name Area R 719 QRE141J-472Y C RESISTOR 4.7K 5% 1/4W R 979 QRE141J-473Y...
  • Page 45 KS-FX901/KS-FX801 3 7 63 1515 0 Electrical parts list (Front board) Block No. 03 Item Remarks Item Parts number Parts name Remarks Area Parts number Parts name Area C 601 NBE20JM-475X TS E CAPACITOR R 611 NRSA63J-122X MG RESISTOR...
  • Page 46 KS-FX901/KS-FX801 3 7 63 1515 0 Packing materials and accessories parts list Block No. Block No. L 13942296513 A1,A2 A8, A9 KIT : A3~A7 u163 3-14 http://www.xiaoyu163.com...
  • Page 47 QPC03004315P POLY BAG 1 SET QPA01003003 POLY BAG 1 HARD CASE FSYH4036-068 SHEET GE30123-035A CARTON 1 KS-FX801 GE30123-012A CARTON 1 KS-FX901 GE10008-001A ESP CUSHION Parts list (Accessories) Block No. M4MM Item Parts number Parts name Q'ty Description Area GET0016-001A INSTRUCTIONS...

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