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JVC KS-FX385 Service Manual

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SERVICE MANUAL
4
2005
MA093B
KS-FX385,KS-FX385S,KS-FX385G
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-FX385
Area suffix
UT ------------------------- Taiwan
UH ---------------------- Thailand
UN --------------------- Indonesia
U -------------------- Other Areas
KS-FX385S
Area suffix
UN --------------------- Indonesia
KS-FX385G
Area suffix
UN --------------------- Indonesia
No.MA093B
2005/4

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Summary of Contents for JVC KS-FX385

  • Page 1: Table Of Contents

    SERVICE MANUAL CASSETTE RECEIVER MA093B 2005 KS-FX385,KS-FX385S,KS-FX385G KS-FX385 Area suffix UT ------------------------- Taiwan UH ---------------------- Thailand UN --------------------- Indonesia U -------------------- Other Areas KS-FX385S Area suffix UN --------------------- Indonesia KS-FX385G 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 Continuous Power Output (RMS) Front than 0.8% total harmonic distortion. 17 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more Rear than 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.MA093B)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.MA093B)

  • 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 side panel (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 side panel on the left side of the body, and remove the side pan- Side panel 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, side Cassette mechanism assembly panel, 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, side Mecha bracket panel, 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 Standard volume position (1) Digital oscilloscope (100MHz) Balance and Bass, Treble volume, Fader : Center (Indication "0") (2) Frequency counter meter Loudness, Dolby NR, Sound, Cruise : Off (3) Electric voltmeter Volume position is about 2V at speaker output with following (4) Wow &...
  • 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.MA093B)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 Rear Right...
  • Page 18 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY CAR ELECTRONICS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MA093B) Printed in Japan...
  • Page 19 SCHEMATIC DIAGRAMS CASSETTE RECEIVER KS-FX385, KS-FX385S KS-FX385G KS-FX385 CD-ROM No.SML200504 Area suffix UT ------------------------- Taiwan UH ---------------------- Thailand UN --------------------- Indonesia U -------------------- Other Areas KS-FX385S Area suffix UN --------------------- Indonesia KS-FX385G Area suffix UN --------------------- Indonesia Contents Block diagram (For UT, UH, UN U version)
  • Page 20 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 21 Block diagram (For UT, UH, UN, U version) Mechanism control board Relay board MAIN MOTOR HEAD MUTE SW TAPE/RADIO SW PROG.SW. SPEAKER LINE CP721 CD CHANGER CONNECTOR REAR OUT CN721 CP751 CP981 CJ921 CJ901 Main amplifier section Head amplifier section LFO+,LFO- LRO+,LRO- SI/SO...
  • Page 22 Standard schematic diagrams (For UT, 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...
  • Page 23 Head amplifier section CJ901 QGA2002C1-05 IC901 AN7310N C203 C103 R204 R104 330k 330k 100p 100p CP722 QGA2002F1-06 C901 C902 CP721 QGB1214K1-06S CP901 QGB1214K1-06S (SHEET 1) (SHEET 1) SHEET 2...
  • Page 24 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 S605 S603 S604...
  • Page 25 Block diagram (For UT3, UH3, UN3, U3 version) Mechanism control board Relay board MAIN MOTOR HEAD MUTE SW TAPE/RADIO SW PROG.SW. SPEAKER LINE CP721 CD CHANGER CONNECTOR REAR OUT CN902 J751 CP981 J931 CJ901 Main amplifier section Head amplifier section LFO+,LFO- LRO+,LRO- SI/SO...
  • Page 26 Standard schematic diagrams (For UT3, 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...
  • Page 27 Head amplifier section CJ901 QGA2002C1-05 IC901 AN7310N C203 C103 R104 R204 330k 330k 100p 100p CP722 QGA2002F1-06 C901 C902 CP721 QGB1214K1-06S CP901 QGB1214K1-06S (SHEET 1) (SHEET 1) SHEET 2...
  • Page 28 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 S601 S602...
  • Page 29 Printed circuit boards Main board (For UT, 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...
  • Page 30 Main board (For UT3, 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...
  • Page 31 Switch board (Common) D601 D602 R654 D619 C651 C653 R635 R655 D603 C652 Forward side R602 S603 S606 S604 D617 PL603 PL601 D604 D616 D615 D607 D608 R606 D609 D610 D611 D612 R607 R608 R609 D613 D614 S615 S605 S608 S612 S613 S607...
  • Page 32 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.MA093BSCH)
  • Page 33 PARTS LIST [ KS-FX385 ] [KS-FX385S] [KS-FX385G] * All printed circuit boards and its assemblies are not available as service parts. KS-FX385 Area suffix UT ------------------------- Taiwan UH ---------------------- Thailand UN --------------------- Indonesia U -------------------- Other Areas KS-FX385S Area suffix...
  • Page 34 Exploded view of general assembly and parts list Block No. only KS-FX385_UT Switch board...
  • Page 35 -FX385_UT...
  • Page 36 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 37 Cassette mechanism assembly and parts list Block No. CDS-363SJ2...
  • Page 38 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 39  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 40 Grease point 1/2 Grease FL-942 SW-902 SW-522B FG-84M EP-56 Reverse side...
  • Page 41 Grease point 2/2...
  • Page 42 Electrical parts list Main board (KS-FX385_UT,UH,UN,U/  Symbol No. Part No. Part Name Description Local FX385S_UN/FX385G_UN) C131 QERF1HM-105Z E CAPACITOR 1uF 50V M Block No. [0][1] C132 QERF1HM-105Z E CAPACITOR 1uF 50V M C133 QERF1HM-105Z E CAPACITOR 1uF 50V M ...
  • Page 43  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local QRE141J-103Y C RESISTOR 10kΩ 1/4W J R990 QRE141J-103Y C RESISTOR 10kΩ 1/4W J QRE141J-103Y C RESISTOR 10kΩ 1/4W J R991 QRE141J-273Y C RESISTOR 27kΩ...
  • Page 44  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R615 NRSA63J-911X MG RESISTOR 910Ω 1/16W J CP721 QGB1214K1-06S CONNECTOR B-B (1-6) R635 NRS181J-221X MG RESISTOR 220Ω 1/8W J CP722 QGA2002F1-06 CONNECTOR W-B (1-6) R636 NRSA02J-122X...
  • Page 45 Main board (KS-FX385_UH3,UN3,U3)  Symbol No. Part No. Part Name Description Local Block No. [0][4] C116 NCB31EK-333X C CAPACITOR 0.033uF 25V K  Symbol No. Part No. Part Name Description Local C117 NCB31EK-123X C CAPACITOR 0.012uF 25V K C118 QERF1HM-105Z E CAPACITOR 1uF 50V M C119...
  • Page 46  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local NRSA63J-102X MG RESISTOR 1kΩ 1/16W J R756 NRSA63J-104X MG RESISTOR 100kΩ 1/16W J NRSA63J-102X MG RESISTOR 1kΩ 1/16W J R757 NRSA63J-104X MG RESISTOR 100kΩ...
  • Page 47  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C204 QEKJ0JM-476Z E CAPACITOR 47uF 6.3V M R601 NRSA63J-681X MG RESISTOR 680Ω 1/16W J C205 QFV61HJ-103Z MF CAPACITOR 0.01uF 50V J R602 NRSA63J-561X MG RESISTOR 560Ω...
  • Page 48 Packing materials and accessories parts list Block No. KS-FX385U,U3 KS-FX385UH,UH3 KS-FX385UN,UN3 KS-FX385GUN A3 A4 A3 A5 KS-FX385SUN A5 A6 A4 A6 KS-FX385UT A5 A6 KIT: A8 A9 A10 A11 3-16...
  • Page 49 Packing and Accessories Block No. [M][3][M][M] Symbol No. Part No. Part Name Description Local  GE20137-003A MOUNTING SLEEVE GE20135-006A TRIM PLATE FX385GUN GE20135-003A TRIM PLATE FX385SUN FX385U,FX385U3,FX385UH,FX385UH3, GE20135-004A TRIM PLATE FX385UN,FX385UN3,FX385UT GET0226-001A INST BOOK ENG THA FX385U,FX385U3,FX385UH,FX385UH3 GET0226-002A INST BOOK CHI(TAIWAN) ARA PER FX385U,FX385U3 FX385GUN,FX385SUN,FX385UN,...
  • Page 50 PARTS LIST [ KS-FX385 ] [KS-FX385S] [KS-FX385G] * All printed circuit boards and its assemblies are not available as service parts. KS-FX385 Area suffix UT ------------------------- Taiwan UH ---------------------- Thailand UN --------------------- Indonesia U -------------------- Other Areas KS-FX385S Area suffix...
  • Page 51 Exploded view of general assembly and parts list Block No. only KS-FX385_UT Switch board...
  • Page 52 -FX385_UT...
  • Page 53 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 54 Cassette mechanism assembly and parts list Block No. CDS-363SJ2...
  • Page 55 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 56  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 57 Grease point 1/2 Grease FL-942 SW-902 SW-522B FG-84M EP-56 Reverse side...
  • Page 58 Grease point 2/2...
  • Page 59 Electrical parts list Main board (KS-FX385_UT,UH,UN,U/  Symbol No. Part No. Part Name Description Local FX385S_UN/FX385G_UN) C131 QERF1HM-105Z E CAPACITOR 1uF 50V M Block No. [0][1] C132 QERF1HM-105Z E CAPACITOR 1uF 50V M C133 QERF1HM-105Z E CAPACITOR 1uF 50V M ...
  • Page 60  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local QRE141J-103Y C RESISTOR 10kΩ 1/4W J R990 QRE141J-103Y C RESISTOR 10kΩ 1/4W J QRE141J-103Y C RESISTOR 10kΩ 1/4W J R991 QRE141J-273Y C RESISTOR 27kΩ...
  • Page 61  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R615 NRSA63J-911X MG RESISTOR 910Ω 1/16W J CP721 QGB1214K1-06S CONNECTOR B-B (1-6) R635 NRS181J-221X MG RESISTOR 220Ω 1/8W J CP722 QGA2002F1-06 CONNECTOR W-B (1-6) R636 NRSA02J-122X...
  • Page 62 Main board (KS-FX385_UH3,UN3,U3)  Symbol No. Part No. Part Name Description Local Block No. [0][4] C116 NCB31EK-333X C CAPACITOR 0.033uF 25V K  Symbol No. Part No. Part Name Description Local C117 NCB31EK-123X C CAPACITOR 0.012uF 25V K C118 QERF1HM-105Z E CAPACITOR 1uF 50V M C119...
  • Page 63  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local NRSA63J-102X MG RESISTOR 1kΩ 1/16W J R756 NRSA63J-104X MG RESISTOR 100kΩ 1/16W J NRSA63J-102X MG RESISTOR 1kΩ 1/16W J R757 NRSA63J-104X MG RESISTOR 100kΩ...
  • Page 64  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C204 QEKJ0JM-476Z E CAPACITOR 47uF 6.3V M R601 NRSA63J-681X MG RESISTOR 680Ω 1/16W J C205 QFV61HJ-103Z MF CAPACITOR 0.01uF 50V J R602 NRSA63J-561X MG RESISTOR 560Ω...
  • Page 65 Packing materials and accessories parts list Block No. KS-FX385U,U3 KS-FX385UH,UH3 KS-FX385UN,UN3 KS-FX385GUN A3 A4 A3 A5 KS-FX385SUN A5 A6 A4 A6 KS-FX385UT A5 A6 KIT: A8 A9 A10 A11 3-16...
  • Page 66 Packing and Accessories Block No. [M][3][M][M] Symbol No. Part No. Part Name Description Local  GE20137-003A MOUNTING SLEEVE GE20135-006A TRIM PLATE FX385GUN GE20135-003A TRIM PLATE FX385SUN FX385U,FX385U3,FX385UH,FX385UH3, GE20135-004A TRIM PLATE FX385UN,FX385UN3,FX385UT GET0226-001A INST BOOK ENG THA FX385U,FX385U3,FX385UH,FX385UH3 GET0226-002A INST BOOK CHI(TAIWAN) ARA PER FX385U,FX385U3 FX385GUN,FX385SUN,FX385UN,...
  • Page 67 SCHEMATIC DIAGRAMS CASSETTE RECEIVER KS-FX385, KS-FX385S KS-FX385G KS-FX385 CD-ROM No.SML200504 Area suffix UT ------------------------- Taiwan UH ---------------------- Thailand UN --------------------- Indonesia U -------------------- Other Areas KS-FX385S Area suffix UN --------------------- Indonesia KS-FX385G Area suffix UN --------------------- Indonesia Contents Block diagram (For UT, UH, UN U version)
  • Page 68 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 69 Block diagram (For UT, UH, UN, U version) Mechanism control board Relay board MAIN MOTOR HEAD MUTE SW TAPE/RADIO SW PROG.SW. SPEAKER LINE CP721 CD CHANGER CONNECTOR REAR OUT CN721 CP751 CP981 CJ921 CJ901 Main amplifier section Head amplifier section LFO+,LFO- LRO+,LRO- SI/SO...
  • Page 70 Standard schematic diagrams (For UT, 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...
  • Page 71 Head amplifier section CJ901 QGA2002C1-05 IC901 AN7310N C203 C103 R204 R104 330k 330k 100p 100p CP722 QGA2002F1-06 C901 C902 CP721 QGB1214K1-06S CP901 QGB1214K1-06S (SHEET 1) (SHEET 1) SHEET 2...
  • Page 72 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 S605 S603 S604...
  • Page 73 Block diagram (For UT3, UH3, UN3, U3 version) Mechanism control board Relay board MAIN MOTOR HEAD MUTE SW TAPE/RADIO SW PROG.SW. SPEAKER LINE CP721 CD CHANGER CONNECTOR REAR OUT CN902 J751 CP981 J931 CJ901 Main amplifier section Head amplifier section LFO+,LFO- LRO+,LRO- SI/SO...
  • Page 74 Standard schematic diagrams (For UT3, 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...
  • Page 75 Head amplifier section CJ901 QGA2002C1-05 IC901 AN7310N C203 C103 R104 R204 330k 330k 100p 100p CP722 QGA2002F1-06 C901 C902 CP721 QGB1214K1-06S CP901 QGB1214K1-06S (SHEET 1) (SHEET 1) SHEET 2...
  • Page 76 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 S601 S602...
  • Page 77 Printed circuit boards Main board (For UT, 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...
  • Page 78 Main board (For UT3, 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...
  • Page 79 Switch board (Common) D601 D602 R654 D619 C651 C653 R635 R655 D603 C652 Forward side R602 S603 S606 S604 D617 PL603 PL601 D604 D616 D615 D607 D608 R606 D609 D610 D611 D612 R607 R608 R609 D613 D614 S615 S605 S608 S612 S613 S607...
  • Page 80 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.MA093BSCH)

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Ks-fx385sKs-fx385g