Page 1
KS-FX742R 3 7 63 1515 0 SERVICE MANUAL CASSETTE RECEIVER 49816 2003 KS-FX742R L 13942296513 Area Suffix E ---------- Continental Europe EX -------------- Central Europe TABLE OF CONTENTS Safety precaution ..............1-2 Disassembly method .
Page 2
KS-FX742R 3 7 63 1515 0 SECTION 1 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
KS-FX742R 3 7 63 1515 0 SECTION 2 Disassembly method 2.1 Main body 2.1.1 Removing the front panel assembly (See Fig.1) (1) Press the release button and remove the front panel as- sembly. Front panel assembly Release button Fig.1 2.1.2 Removing the bottom cover...
Page 4
KS-FX742R 3 7 63 1515 0 2.1.4 Removing the heat sink (See Fig.4) • Prior to performing the following procedure, remove the front panel assembly. (1) Remove the two screws B and two screws C attaching the heat sink on the left side of the body, and remove the heat sink.
Page 5
KS-FX742R 3 7 63 1515 0 2.1.7 Removing the cassette mechanism assembly (See Fig.7) • Prior to performing the following procedure, remove the front Cassette mechanism assembly panel assembly, bottom cover, front chassis, heat sink, rear panel and main board.
Page 6
KS-FX742R 3 7 63 1515 0 2.2 CD Mechanism Assembly REFERENCE: Prior to performing the following procedures, turn the mode gear on the bottom of the body until the respective part comes to the EJECT position (Refer to Fig.1).
Page 7
KS-FX742R 3 7 63 1515 0 2.2.3 Removing the cassette hanger assembly / cassette holder (See Fig.4 to 7) (1) Check the mode is set to EJECT. Push down the front part of the cassette holder and move in the direction of the ar- Cassette hanger assembly row to release the joint c.
Page 8
KS-FX742R 3 7 63 1515 0 2.2.4 Removing the side bracket assembly (See Fig.8 to 10) (1) Remove the screw A attaching the side bracket assembly. (2) Detach the front side of the side bracket assembly upward Side bracket assembly and pull out forward to release the joint i and j in the rear.
Page 9
KS-FX742R 3 7 63 1515 0 2.2.5 Removing the pinch arm (F) assembly (See Fig.11 and 12) (1) Remove the polywasher and pull out the pinch arm (F) as- sembly. Pinch arm (F) assembly Polywasher (2) Remove the compulsion spring.
Page 10
KS-FX742R 3 7 63 1515 0 2.2.8 Removing the head / tape guide (See Fig.16 and 17) REFERENCE: It is not necessary to remove the slide chassis assembly. (1) Remove the band attaching the wire to the head. Pinch arm spring (2) Remove the two screws B, the head and the head support spring.
Page 11
KS-FX742R 3 7 63 1515 0 2.2.10 Disassembling the flywheel assembly (F) (See Fig.20 and 21) (1) Push and turn counterclockwise the spring holder (F) to re- Polywasher lease the three joints p on the bottom of the flywheel.
Page 12
KS-FX742R 3 7 63 1515 0 2.2.13 Removing the gear base arm / gear base link assembly (See Fig.25 to 27) (1) Move the gear base arm in the direction of the arrow. Gear base arm Joint t (2) Insert a slotted screwdriver to the gear base spring under...
Page 13
KS-FX742R 3 7 63 1515 0 2.2.15 Removing the mode gear Mode switch actuator Mode gear (See Fig.28 and 31) (1) Remove the polywasher on the bottom and pull out the mode gear. 2.2.16 Removing the mode switch actuator (See Fig.28, 29 and 31)
Page 14
KS-FX742R 3 7 63 1515 0 2.2.19 Removing the gear base assembly / take up gear / reflector gear (See Fig.32 to 34) (1) Push in the pin d' of the gear base assembly on the upper Slot e' side of the body and move the reflector gear toward the bottom, then pull out.
Page 15
KS-FX742R 3 7 63 1515 0 2.2.21 Removing the side bracket assembly (See Fig.35 to 39) (1) Remove the eject cam plate spring. (2) Push the joint f' through the slot to remove the load rack Boss g' downward.
Page 16
KS-FX742R 3 7 63 1515 0 2.2.22 Removing the main motor assembly / sub motor assembly (See Fig.40 to 42) (1) Remove the belt at the bottom. (2) Remove the polywasher and pull out the mode gear. Main motor assembly (3) Pull out the reduction gear (B).
Page 17
KS-FX742R 3 7 63 1515 0 SECTION 3 Adjustment 3.1 Adjustment method Test instruments reqired for adjustment Standard volume position 1. Digital oscilloscoe(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 &...
Page 18
KS-FX742R 3 7 63 1515 0 Information for using a car audio service jig 1. For 1995 and 1996, 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 19
KS-FX742R 3 7 63 1515 0 Arrangement of adjusting & test points Cassette mechanism (Surface) Motor assembly Tape speed adjust Playback head Azimuth screw L 13942296513 Head section view Head azimuth screw Fixed screw Playback head Height adjusting screw...
Page 20
KS-FX742R 3 7 63 1515 0 Mechanism adjustment section Item Adjusting & Confirmation Methods Adjust Std. Value 1.Head azimuth "Head Height Adjustment" Note Adjust the azimuth directly. When you adjust the height us- A Line ing a mirror tape, remove the cassette housing from the mechanism chassis.
Page 22
KS-FX742R 3 7 63 1515 0 4.2 LA4743K (IC301) : Power amp. • 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 23
KS-FX742R 3 7 63 1515 0 • Pin layout • Pin function Pin No. Symbol Function Pin No. Symbol Function Header of IC FLIN Front Lch input Power GND RLIN Rear Lch input Outpur(-) for front Rch ONTIME Power on time control...
Page 24
KS-FX742R 3 7 63 1515 0 4.3 HD74HC126FP-X (IC801) : Buffer • Pin layout • Pin function Input Output Note: H:High level L:Low level X:Irrelevant Z:Off(High-impedance) State a 3-state input • Block diagram L 13942296513 Note: CL includes probe and jig capacitance 4.4 LB1641 (IC402) : DC motor driver...
Page 28
KS-FX742R 3 7 63 1515 0 4.8 UPD178078GF-596 (IC701) : System CPU • Pin layout • Pin function Pin No. Symbol Function PS1(on) ACC ON/OFF detection signal input PS2(stop) Memory ON/OFF detection signal input POWER POWER ON/OFF control output...
Page 29
KS-FX742R 3 7 63 1515 0 Pin No. Symbol Function GND0 SEEK/STOP auto seek/receiving control output GND2 IF count input VDDPLL OSC INPUT FM/AM local osc input NO USE GNDPLL AM E.OUT AM error output FM E,OUT FM error output...
Page 31
KS-FX742R 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY MOBILE ENTERTAINMENT CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.49816) Printed in Japan 200303WPC http://www.xiaoyu163.com...
Page 32
KS-FX742R 3 7 63 1515 0 SCHEMATIC DIAGRAMS CASSETTE RECEIVER KS-FX742R CD-ROM No.SML200303 L 13942296513 Area Suffix E ---- Continental Europe EX -------- Central Europe Contents Block diagram Standard schematic diagrams Printed circuit boards 2-5,6 u163 No.49816SCH COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD.
KS-FX742R 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...
KS-FX742R 3 7 6 3 1 5 1 5 0 Block diagram MOTOR SWITCH MAIN TAPE END.STANDBY MOTOR HEAD CN402 CN403 FWD-L FWD-R TO SPEAKER TO CD CHANGER MOTOR REW-L CONNECTOR TO REAR LINE OUT TAPEIN SUBMO+ REW-R MODE...
Page 41
KS-FX742R 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.49816SCH) 2003/03 http://www.xiaoyu163.com...
KS-FX742R 3 7 63 1515 0 PARTS LIST [ KS-FX742R ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix E------------ Continental Europe EX --------------- Central Europe L 13942296513 - Contents - Exploded view of general assembly and parts list (Block No.M1)
Page 43
KS-FX742R 3 7 63 1515 0 Exploded view of general assmbly and parts list Block No. L 13942296513 u163 http://www.xiaoyu163.com...
Page 44
KS-FX742R 3 7 63 1515 0 Exploded view of general assembly and parts list Block No. [M][1][M][M] Symbol No. Part No. Part Name Description Local ------------ MECHA FSYH4036-050 SHEET GE20136-001A MECHA BKT(L) FSKL2002-002 MECHA BKT(R) QYSDST2606Z SCREW 2.6mm x 6mm(x4)
Page 45
KS-FX742R 3 7 63 1515 0 Cassette mechanism assembly and parts list Block No. CDS-802JE3 L 13942296513 u163 http://www.xiaoyu163.com...
Page 46
KS-FX742R 3 7 63 1515 0 Cassette mechanism Block No. [M][P][M][M] Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local 2-1821-0040-D2S PSW-S 2.1 (x3) 2-1711-5040-16S E RING X-0802-1009S MAIN CHASSIS AS...
KS-FX742R 3 7 63 1515 0 Electrical parts list Main board Symbol No. Part No. Part Name Description Local Block No. [0][1][0][0] QERF1HM-105Z E CAPACITOR 1uF 50V M Symbol No. Part No. Part Name Description Local QERF1HM-105Z...
Page 50
KS-FX742R 3 7 63 1515 0 Symbol No. Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local C702 NCB31EK-104X C CAPACITOR 0.1uF 25V K R245 NRSA63J-470X MG RESISTOR 47Ω 1/16W J C703...
Page 51
KS-FX742R 3 7 63 1515 0 Symbol No. Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local R903 NRS181J-472X MG RESISTOR 4.7kΩ 1/8W J R610 NRSA63J-182X MG RESISTOR 1.8kΩ 1/16W J R904...
Page 52
KS-FX742R 3 7 63 1515 0 Symbol No. Part No. Part Name Description Local C403 NCB21CK-184X C CAPACITOR 0.18uF 16V K C404 NCB31EK-104X C CAPACITOR 0.1uF 25V K C405 QERF1HM-105Z E CAPACITOR 1uF 50V M C406 NCB31EK-103X C CAPACITOR 0.01uF 25V K...
Page 53
KS-FX742R 3 7 63 1515 0 Packing materials and accessories parts list Block No. Block No. A2~A7 L 13942296513 KIT:A9~A13 u163 3-12 http://www.xiaoyu163.com...
Page 54
KS-FX742R 3 7 63 1515 0 Packing Accessories Block No. [M][3][M][M] Block No. [M][5][M][M] Symbol No. Part No. Symbol No. Part No. Part Name Description Local Part Name Description Local FSPG4002-001 POLY BAG (x2) FX742RED GET0114-001A INST BOOK...