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KS-FX621 SERVICE MANUAL CASSETTE RECEIVER 49825 2003 KS-FX621 MODE Area Suffix U ------ Other Areas TABLE OF CONTENTS Safety precaution ..............1-2 Disassembly method .
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KS-FX621 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. 1-2 (No.49825)
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KS-FX621 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- Front panel assembly sembly. Release button Fig.1 2.1.2 Removing the bottom cover (See Fig.2) •...
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KS-FX621 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.
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KS-FX621 2.1.7 Removing the cassette mechanism assembly (See Fig.7) • Prior to performing the following procedure, remove the front panel assembly, bottom cover, front chassis, heat sink, rear Cassette mechanism assembly panel and main board. (1) Remove the four screws H attaching the cassette mecha- nism assembly from the top chassis.
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KS-FX621 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). Mode gear Fig.1 2.2.1 Removing the cassette guide (See Fig.2)
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KS-FX621 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.
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KS-FX621 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.
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KS-FX621 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. Compulsion spring Polywasher Pinch arm...
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KS-FX621 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.
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KS-FX621 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. (2) The spring holder (F), the TU spring and the friction gear Spring holder (F) play come off.
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KS-FX621 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...
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KS-FX621 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) (1) Pull out the mode switch actuator at the bottom.
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KS-FX621 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.
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KS-FX621 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. Eject cam limiter Side bracket (3) Move the eject cam limiter in the direction of the arrow to...
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KS-FX621 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).
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KS-FX621 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 & flutter meter Volume position is about 2V at speaker output with 5.Test tapes...
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KS-FX621 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.
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KS-FX621 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 Playback head Azimuth screw B Azimuth screw A (Reverse) (Forward) (No.49825)1-19...
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KS-FX621 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 the...
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KS-FX621 4.4 LC72366-9B41 (IC701) : Micon • Pin layout • Pin function Pin No. Symbol Function 4.5MHz crystal oscillation TEST2 Connect to ground J-BUS SI J-BUS signal data input (to 74HC126) J-BUS SO J-BUS signal data output (to 74HC126) J-BUS SCK...
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KS-FX621 Pin No. Symbol Function TAPE IN Detect cassette in SW. [H] at cassette in STAND BY Detect stand by SW position. REEL Pulse input MODE Detect mode position. Output F/R ( Forward:L Reverse:H) MS IN Detect MS. [H] at no music.
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KS-FX621 4.5 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 PWR GND2...
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KS-FX621 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY MOBILE ENTERTAINMENT CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.49825) Printed in Japan 200303WPC...
KS-FX621 PARTS LIST [ KS-FX621 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix U --------------------- Other Areas - Contents - Exploded view of general assembly and parts list (Block No.M1) Cassette mechanism assembly and parts list (Block No.MP) Electrical parts list (Block No.01~03)
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KS-FX621 Exploded view of general assmbly and parts list Block No.
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KS-FX621 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 SPACER GE20136-001A MECHA BKT(L) FSKL2002-002 MECHA BKT(R) QYSDST2606Z SCREW 2.6mm x 6mm(x4) QYSDST2606Z SCREW 2.6mm x 6mm...
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KS-FX621 Cassette mechanism assembly and parts list Block No. CDS-802JE3...
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KS-FX621 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 2-1031-7030-C2S SCREW (x2) X-0802-1002S SLIDE CHASSIS A...
KS-FX621 Electrical parts list Main board Symbol No. Part No. Part Name Description Local Block No. [0][1][0][0] C162 QERF1HM-105Z E CAPACITOR 1uF 50V M Symbol No. Part No. Part Name Description Local C163 QERF1HM-105Z E CAPACITOR 1uF 50V M...
KS-FX621 Symbol No. Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local QRE141J-102Y C RESISTOR 1kΩ 1/4W J R803 QRE141J-101Y C RESISTOR 100Ω 1/4W J QRE141J-103Y C RESISTOR 10kΩ 1/4W J R804 QRE141J-334Y C RESISTOR 330kΩ...
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KS-FX621 Mecha control board Symbol No. Part No. Part Name Description Local Block No. [0][3][0][0] C651 NCB21HK-223X C CAPACITOR 0.022uF 50V K Symbol No. C652 NBE20JM-106X TS E CAPACITOR 10uF 6.3V M Part No. Part Name Description Local...
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KS-FX621 Packing materials and accessories parts list Block No. Block No. A1,A2 KIT : A3~A7 3-12...
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KS-FX621 Packing Accessories Block No. [M][3][M][M] Block No. [M][5][M][M] Symbol No. Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local FSPG4002-001 POLY BAG GET0113-001A INST BOOK ENG ARA CHA INA QPA00801205 POLY BAG...
KS-FX621 SCHEMATIC DIAGRAMS CASSETTE RECEIVER KS-FX621 CD-ROM No.SML200303 8 MO 11 RPT 12 RND MODE Area Suffix U --------------- Other Areas Contents Block diagram Standard schematic diagrams Printed circuit boards 2-5,6 No.49825SCH COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD. 2003/03...
KS-FX621 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.
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KS-FX621 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.49825SCH) 2003/03...