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JVC KS-F185 Service Manual

Cassette receiver
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SERVICE MANUAL
3
2005
MA094B
KS-F185,KS-F185S,KS-F185G
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
CASSETTE RECEIVER

TABLE OF CONTENTS

COPYRIGHT © 2005 Victor Company of Japan, Limited
KS-F185
Area suffix
UH ---------------------- Thailand
UN --------------------- Indonesia
U -------------------- Other Areas
KS-F185S
Area suffix
UN --------------------- Indonesia
KS-F185G
Area suffix
UN --------------------- Indonesia
No.MA094B
2005/3

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Summary of Contents for JVC KS-F185

  • Page 1: Table Of Contents

    SERVICE MANUAL CASSETTE RECEIVER MA094B 2005 KS-F185,KS-F185S,KS-F185G KS-F185 Area suffix UH ---------------------- Thailand UN --------------------- Indonesia U -------------------- Other Areas KS-F185S Area suffix UN --------------------- Indonesia KS-F185G Area suffix UN --------------------- Indonesia TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 SPECIFICATION AUDIO AMPLIFIER SECTION Maximum Power Output Front 45 W per channel Rear 45 W per channel 17 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than Continuous Power Output Front (RMS) 0.8% total harmonic distortion. 17 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than Rear 0.8% total harmonic distortion.

  • Page 3: Precaution

    SECTION 1 PRECAUTION Safety Precautions 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. (No.MA094B)1-3...

  • Page 4: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS HOW TO IDENTIFY MODELS 2.1.1 NAME PLATE Discernment sign 1-4 (No.MA094B)

  • Page 5: Disassembly

    SECTION 3 DISASSEMBLY Main body 3.1.1 Removing the front panel assembly (See Fig.1) (1) Push the detach button and remove the front panel assem- bly. Front panel assembly Detach button Fig.1 3.1.2 Removing the bottom cover (See Fig.2) • Prior to performing the following procedures, remove the front panel assembly.
  • Page 6 3.1.4 Removing the heat sink (See Fig.4) • Prior to performing the following procedure, remove the front panel assembly. (1) Remove the screw B and two screws C attaching the heat sink on the left side of the body, and remove the heat sink. Heat sink Fig.4 3.1.5 Removing the rear panel...
  • Page 7 3.1.7 Removing the cassette mechanism assembly (See Fig.7) • Prior to performing the following procedure, remove the front panel assembly, bottom cover, front chassis assembly, heat Cassette mechanism assembly sink, rear panel and main board. (1) Remove the four screws H attaching the cassette mecha- nism assembly from the top chassis.
  • Page 8 3.1.10 Removing the mecha bracket (See Fig.10) • Prior to performing the following procedure, remove the front panel assembly, bottom cover, front chassis assembly, heat Mecha bracket sink, rear panel, main board, cassette mechanism assembly, head amplifier board and relay board. (1) Remove the four screws L attaching the mecha bracket.
  • Page 9 Cassette mechanism assembly • Prior to performing the following procedures, remove the head 3.2.4 Removing the playback head amplifier board, the relay board and the mechanism bracket. (See Fig.2) • Prior to performing the following procedure, remove the direc- 3.2.1 Removing the direction switch board tion switch board and the FF / REW lever assembly.
  • Page 10 3.2.6 Removing the cassette hanger / cassette holder Cassette holder (See Fig.3) Return link Joint i • Prior to performing the following procedure, remove the FF / Cassette hanger REW lever assembly. Eject lever (1) From the rear of the unit, bend the two tabs f outwards and disengage the two joints g in the direction of the arrow.
  • Page 11 3.2.9 Removing the Flywheel (BF) and (BR) assembly 3.2.10 Removing the reel base assembly (See Fig.4 and 5) (See Fig.5 and 6) • Prior to performing the following procedure, remove the cas- (1) Raise the part k of the reel base assembly slightly and re- sette hanger / cassette holder.
  • Page 12 3.2.11 Removing the mute switch board (See Fig.8) Cassette mechanism assembly Rower switch (1) Unsolder the two wires l on the mute switch board on the back of the cassette mechanism assembly. Soldering l Motor assembly (2) Remove the screw H attaching the mute switch board. switch board Mute Fig.8...

  • Page 13: Adjustment

    SECTION 4 ADJUSTMENT Adjustment method Test instruments required for adjustment (1) Digital oscilloscope (100MHz) (2) Frequency counter meter (3) Electric voltmeter (4) Wow & flutter meter (5) Test tapes VT724 : For DOLBY level measurement VT739 : For playback frequency measurement VT712 : For wow flutter &...
  • Page 14 Information 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) As a U-shape type top cover is employed, this type of extension cord is needed to check operation of the mechanism assembly after disassembly.
  • Page 15 Arrangement of Adjusting & Test points Cassette mechanism (Surface) Motor assembly Tape speed adjust Playback head Azimuth screw Head section view Head azimuth screw Fixed screw Playback head Height adjusting screw a Height adjusting screw c Height adjusting screw b (No.MA094B)1-15...
  • Page 16 Item Conditions Adjustment and Confirmation methods S.Values Adjust Head Head height adjustment Test tape: azimuth Adjust the azimuth directly. When you SCC-1659 adjustment adjust the height using a mirror tape, VT703 (10kHz) remove the cassette housing from the mechanism chassis. After installing thecassette housing, perform the azimuth adjustment.

  • Page 17: Troubleshooting

    SECTION 5 TROUBLESHOOTING 16 PIN CORD DIAGRAM Black Green BL/WH Violet Blue Gray WH/BK White Yellow GN/BK VI/BK GY/BK 16 YL MEMORY 8 BK 7 RD 5 BL/WH REMOTE 4 WH 12 WH/BK 3 GN 11 GN/BK 2 VI 10 VI/BK 1 GY 9 GY/BK REMOTE...
  • Page 18 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY CAR ELECTRONICS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MA094B) Printed in Japan...

  • Page 19: Parts List

    PARTS LIST [ KS-F185 ] [ KS-F185S ] [ KS-F185G ] * All printed circuit boards and its assemblies are not available as service parts. KS-F185 Area suffix UH ---------------------- Thailand UN --------------------- Indonesia U -------------------- Other Areas KS-F185S Area suffix...
  • Page 20 Exploded view of general assembly and parts list Block No. Switch board...
  • Page 22 General Assembly Block No. [M][1][M][M]  Symbol No. Part No. Part Name Description Local GE10043-012A TOP CHASSIS GE40135-001A EARTH PLATE GE30938-003A SIDE PANEL QYSDST2004ZA TAP SCREW M2 x 4mm(x2) QYSDST2604ZA TAP SCREW M2.6 x 4mm(x4) GE40235-001A SCREW (x2) QYSDST2606ZA TAP SCREW M2.6 x 6mm(x2) QYSDST2604ZA TAP SCREW...
  • Page 23 Cassette mechanism assembly and parts list Block No. CDS-363SJ2...
  • Page 24 WIRE(B) 1-0036-7073S WIRE(AL) X-0363-7006S MOTOR ASSY 1-0363-7001S MUTE SW 1-0036-7007-1S SLIDE SW 1-0363-7008S SLIDE SW PWB 1-0036-7034S POWER SW 1-0036-7089S 6P WIRE ASY(JVC 1-0036-7088S 5P WIRE ASY(JVC 2-1816-0032-E8S MYLAR WASHER(S) (x2) 2-1812-0030-D2S PSW-S (x3) 1-0036-5024S PSW(REEL) (x5) 2-1712-0050-16S E RING...
  • Page 25  Symbol No. Part No. Part Name Description Local 1-0363-7015S MUTE SWITCH BOARD 2-1331-7040-C2S SCREW S 2-1331-7060-C2S SCREW S 2-1382-0030-C2S SCREW B (x5) 2-1332-0040-C1S SCREW S 2-1032-0070-C2S SCREW (x2) 2-1032-0025-C2S SCREW (x2) 2-1012-0040-C2S SCREW 2-1012-0030-F2S SCREW 1-0138-5002S AZIMUTH SCREW (x3)
  • Page 26 Grease point 1/2 Grease FL-942 SW-902 SW-522B FG-84M EP-56 Reverse side...
  • Page 27 Grease point 2/2...

  • Page 28: Electrical Parts List

    Electrical parts list Main board  Symbol No. Part No. Part Name Description Local (F185_UH,UN,U) (F185S/F185G_UN) C134 QFV61HJ-823Z MF CAPACITOR 0.082uF 50V J Block No. [0][1] C135 QFV61HJ-823Z MF CAPACITOR 0.082uF 50V J C136 QFV61HJ-154Z MF CAPACITOR 0.15uF 50V J ...
  • Page 29  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local QRE141J-222Y C RESISTOR 2.2kΩ 1/4W J CN901 QGB1214J1-06S CONNECTOR B-B (1-6) QRE141J-391Y C RESISTOR 390Ω 1/4W J CP981 QNZ0611-001 16P CONNECTOR QRE141J-512Y C RESISTOR 5.1kΩ...
  • Page 30  Symbol No. Main board (F185_UH3,UN3,U3) Part No. Part Name Description Local Block No. [0][4] R663 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J  Symbol No. Part No. Part Name Description Local CP701 VMC0335-001 PANEL CONNECTOR S601 NSW0124-001X TACT SW S602 NSW0124-001X TACT SW IC701...
  • Page 31  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local C118 QERF1HM-105Z E CAPACITOR 1uF 50V M NRS181J-152X MG RESISTOR 1.5kΩ 1/8W J C119 QERF1HM-105Z E CAPACITOR 1uF 50V M NRSA63J-101X MG RESISTOR 100Ω...
  • Page 32  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local R963 NRSA63J-123X MG RESISTOR 12kΩ 1/16W J R636 NRSA02J-122X MG RESISTOR 1.2kΩ 1/10W J R966 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J R637 NRSA02J-122X MG RESISTOR 1.2kΩ...
  • Page 33 <MEMO> 3-15...
  • Page 34 Packing materials and accessories parts list Block No. F185UN, F185UN3, F185U,F185U3 A1 A4 F185SUN, A5 A6 F185GUN A1 A6 F185UH,F185UH3 A1 A5 KIT: 3-16...
  • Page 35 Packing and Accessories Block No. [M][3][M][M]  Symbol No. Part No. Part Name Description Local GET0225-001A INST BOOK F185U,F185U3,F185UH,F185UH3 GET0225-003A INST BOOK F185GUN,F185SUN,F185UN,F185UN3 GE20137-003A MOUNTING SLEEVE GE20135-006A TRIM PLATE F185GUN GE20135-003A TRIM PLATE F185SUN F185U,F185U3,F185UH,F185UH3,F185UN GE20135-004A TRIM PLATE ,F185UN3 GET0225-002A INST BOOK CHI(TAIWAN) ARA PER F185U,F185U3...
  • Page 36 SCHEMATIC DIAGRAMS CASSETTE RECEIVER KS-F185,KS-F185S KS-F185G KS-F185 CD-ROM No.SML200503 Area suffix UH ---------------------- Thailand UN --------------------- Indonesia U -------------------- Other Areas KS-F185S Area suffix UN --------------------- Indonesia KS-F185G Area suffix UN --------------------- Indonesia Contents Block diagram (For UH,UN,U version) Standard schematic diagrams (For UH,UN,U version)

  • Page 37: Safety Precaution

    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.
  • Page 38 Block diagram (For UH, UN, U version) Mechanism control board Relay board MAIN MOTOR HEAD MUTE SW TAPE/RADIO SW PROG.SW. SPEAKER LINE CP721 CONNECTOR REAR OUT CN721 CP981 CJ921 CJ901 Main amplifier section Head amplifier section LFO+,LFO- LRO+,LRO- RFO+,RFO- RRO+,RRO- IC981 POWER AMP IC901...
  • Page 39 Standard schematic diagrams (For UH, UN, U version) Main amplifier section QAU0311-001 Q989 KRA102M-T QNB0100-002 ACC.MUTE Q972 KRA102M-T 1SS119-041 D973 MUTE2 CJ921 QNN0519-001 R163 4.7u R164 D161 R165 1SS119-041 2.2K D261 R265 MUTE R757 1SS119-041 2.2K R761 R263 R264 BUS.INT R758 R763 BUS.SCK...
  • Page 40 Head amplifier section CJ901 QGA2002C1-05 IC901 UPC1228HA C203 C103 R104 R204 330k 330k 100p 100p CP722 QGA2002F1-06 C901 CP721 QGB1214K1-06S CP901 QGB1214K1-06S (SHEET 1) (SHEET 1) SHEET 2...
  • Page 41 LCD & Key control section To CJ701 (SHEET 1) CP701 VMC0335-001 IC651 LC75823W COM1 R654 COM2 1.5k COM3 D654 R657 C651 UDZS5.1B-X 180k C652 4.7/6.3 R655 C653 680p D615 D613 D610 D607 D619 D617 D605 D603 R601 R602 R603 R604 S603 S604 S605...
  • Page 42 Block diagram (For UH3, UN3, U3 version) Mechanism control board Relay board MAIN MOTOR HEAD MUTE SW TAPE/RADIO SW PROG.SW. SPEAKER LINE CP721 CONNECTOR REAR OUT CN902 CP981 J931 CJ901 Main amplifier section Head amplifier section LFO+,LFO- LRO+,LRO- RFO+,RFO- RRO+,RRO- IC941 POWER AMP IC901...
  • Page 43 Standard schematic diagrams (For UH3, UN3, U3 version) Main amplifier section QAU0281-001 IC941 LA4743K C951 C952 0.22/50 C948 R142 QNB0100-002 R251 R151 TU.R R114 C947 R141 0.22/50 4.7U TU.L 2.7K R113 2.7K 1/50 C111 C119 1/50 CH.L C949 C153 1/50 C118 1/50 0.22/50...
  • Page 44 Head amplifier section CJ901 QGA2002C1-05 IC901 UPC1228HA C203 C103 R104 R204 330k 330k 100p 100p CP722 QGA2002F1-06 C901 CP721 QGB1214K1-06S CP901 QGB1214K1-06S (SHEET 1) (SHEET 1) SHEET 2...
  • Page 45 LCD & Key control section To CJ701 (SHEET 1) CP701 VMC0335-001 IC651 PT6523LQ-L COM1 R654 COM2 1.5k COM3 D654 R657 C651 UDZS5.1B-X 180k C652 4.7/6.3 R655 C653 680p D615 D613 D610 D607 D619 D617 D605 D603 R601 R602 R603 R604 S605 S603 S604...
  • Page 46 Printed circuit boards Main board (For UH, UN, U version) CP981 L981 CP751 CJ921 C981 D981 CN901 C983 D771 C986 C132 C150 C931 C771 C133 C997 R771 C940 C709 R721 C996 C942 R941 IC981 C933 R722 C934 R992 C250 C231 R997 C941 C994...
  • Page 47 Main board (For UH3, UN3, U3 version) C961 L961 R970 J931 D961 J751 C969 R136 R236 B106 CN901 C954 C953 C952 C951 R132 D931 R232 C112 D932 C941 B201 B109 B219 B202 B132 B221 B203 B280 C967 C982 R961 B204 B220 C948 C947...
  • Page 48 Switch board (Common) Forward side D601 D602 R654 D619 C651 C653 R635 R655 D603 C652 R602 S603 S606 S604 D617 PL603 PL601 D604 D616 D615 D607 D608 R606 D609 D610 D611 D612 R608 R607 D614 S605 S608 R609 D613 S613 S615 S607 S609...
  • Page 49 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY CAR ELECTRONICS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.MA094BSCH)

This manual is also suitable for:

Ks-f185sKs-f185g

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