SERVICE MANUAL CD / CASSETTE RECEIVER MA041 2003 KW-XC939 Area suffix EE --------- Russian Federation TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
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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 0.8% Continuous Power Output (RMS) Front total harmonic distortion.
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. Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check.
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Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs. 1.2.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.
SECTION 3 DISASSEMBLY Main body 3.1.1 Removing the front panel assembly Front panel assembly (See Fig.1, 2) (1) From the both side of the main body, remove the four screws A attaching the front panel assembly. (See Figs.1, 2) (2) Release the four joints a using a screwdriver, then remove Joints a the front panel assembly toward the front.
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3.1.4 Removing the top chassis assembly and bottom CN702 chassis assembly (See Fig.5 to 7) • Prior to performing the following procedures, remove the front panel assembly, rear bracket and heat sink. (1) From the back side of the main body, disconnect the card wire from the connector CN702 on the main board in the...
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3.1.6 Removing the CD mecha control board (See Fig.9) Joint e Joint d • Prior to performing the following procedures, remove the front panel assembly, rear bracket, heat sink, top chassis assembly and main board. (1) From the top side of top chassis assembly, disconnect the card wire from the connector CN601 on the CD mecha con-...
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3.1.8 Removing the changer control board Changer control board CN972 (See Fig.11, 12) • Prior to performing the following procedures, remove the front panel assembly, rear bracket, heat sink, top chassis assembly and bottom chassis assembly. (1) m the connector CN972 on the changer control board.
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3.1.10 Removing the cassette mechanism assembly (See Fig.14) • Prior to performing the following procedures, remove the front panel assembly, rear bracket, heat sink, bottom chassis as- sembly, changer control board and mecha control board. (1) From the bottom side of the bottom chassis assembly, re- move the four screws N attaching the cassette mechanism assembly to the bottom chassis assembly.
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CD Mechanism section 3.2.1 Removing the top cover (See Figs.1 and 2) (1) Remove the four screws A on the both side of the body. (2) Lift the front side of the top cover and move the top cover backward to release the two joints a. Top cover Joints a Fig.1...
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3.2.2 Removing the connector board Wires (See Figs.3 to 5) CAUTION: Before disconnecting the flexible wire from the pickup, solder the short-circuit point on the pickup. No observance of this in- struction may cause damage of the pickup. (1) Remove the screw B fixing the connector board. (2) Solder the short-circuit point on the pickup.
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3.2.3 Removing the DET switch (See Figs.6 and 7) (1) Extend the two tabs c of the feed sw. holder and pull out the switch. (2) Unsolder the DET switch wire if necessary. switch Connector board Pickup Fig.6 Tab c DET switch DET switch wire Tab c...
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3.2.4 Removing the chassis unit (See Figs.8 and 9) • Prior to performing the following procedure, remove the top Chassis unit cover and connector board. Suspension spring (L) Suspension spring (R) (1) Remove the two suspension springs (L) and (R) attaching the chassis unit to the frame.
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3.2.5 Removing the clamper assembly (See Figs.10 and 11) • Prior to performing the following procedure, remove the top cover. (1) Remove the clamper arm spring. Clamper arm spring (2) Move the clamper assembly in the direction of the arrow to release the two joints d.
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3.2.6 Removing the loading / feed motor assembly (See Figs.12 and 13) • Prior to performing the following procedure, remove the top cover, connector board and chassis unit. (1) Remove the screw C and move the loading / feed motor as- sembly in the direction of the arrow to remove it from the chassis rivet assembly.
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3.2.7 Removing the pickup unit Pickup unit (See Figs.14 to 18) • Prior to performing the following procedure, remove the top cover, connector board and chassis unit. (1) Remove the screw D and pull out the pu. shaft holder from the pu.
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3.2.9 Removing the trigger arm Joint k (See Figs.19 and 20) • Prior to performing the following procedure, remove the top cover, connector board and clamper unit. (1) Turn the trigger arm in the direction of the arrow to release Trigger arm the joint k and pull out upward.
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3.2.11 Removing the mode sw. / select lock arm Link plate Joint t (See Figs.22 and 23) Mode sw. • Prior to performing the following procedure, remove the top plate assembly. Select lock arm (1) Bring up the mode sw. to release from the link plate (joint t) and turn in the direction of the arrow to release the joint u.
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3.2.12 Reassembling the mode sw. / select lock arm Select lock arm spring (See Figs.24 to 26) REFERENCE: Hook w Reverse the above removing procedure. Joint v (1) Reattach the select lock arm spring to the top plate and set Joint v the shorter end of the select lock arm spring to the hook w on the top plate.
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3.2.13 Removing the select arm R / link plate Joint c' Link plate Joint r (See Figs.27 and 28) Joint b' Select arm R • Prior to performing the following procedure, remove the top plate assembly. (1) Bring up the select arm R to release from the link plate (joint a') and turn as shown in the figure to release the two Joint b' joints b' and joint c'.
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3.2.15 Removing the loading roller assembly (See Figs.31 to 33) Loading roller assembly • Prior to performing the following procedure, remove the Roller guide clamper assembly and top plate assembly. spring (1) Push inward the loading roller assembly on the gear side and detach it upward from the slot of the joint g' of the lock arm rivet assembly.
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3.2.16 Removing the loading gear 5, 6 and 7 Loading gear bracket (See Figs.35 and 36) • Prior to performing the following procedure, remove the top Loading gear 6 cover, chassis unit, pickup unit and top plate assembly. (1) Remove the screw K attaching the loading gear bracket. The loading gear 6 and 7 come off the loading gear brack- (2) Pull out the loading gear 5.
3.2.17 Removing the gears Joint p' (See Figs.37 to 40) • Prior to performing the following procedure, remove the top Change plate cover, chassis unit, top plate assembly and pickup unit. rivet assembly • Pull out the loading gear 3. (See Fig.35.) (1) Pull out the feed gear.
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3.2.18 Removing the turn table / spindle motor Turn table (See Figs.41 and 42) • Prior to performing the following procedure, remove the top cover, connector board, chassis unit and clamper assembly. (1) Remove the two screws L attaching the spindle motor as- sembly through the slot of the turn table on top of the body.
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Cassette 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 3.3.1 Removing the cassette guide (See Fig.2) (1) Turn the mode gear to set to RVS play or subsequent Cassette guide...
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3.3.3 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 Cassette holder assembly of the cassette holder and move in the direction of the ar- row to release the joint c.
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3.3.4 Removing the side bracket assembly Side bracket assembly (See Fig.8 to 10) Joint i (1) Remove the screw A attaching the side bracket assembly. (2) Detach the front side of the side bracket assembly upward and pull out forward to release the joint i and j in the rear. Joint j CAUTION: When reassembling, make sure that the boss k of the...
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3.3.5 Removing the pinch arm (F) assembly (See Fig.11 and 12) (1) Remove the polywasher and pull out the pinch arm (F) as- sembly. (2) Remove the compulsion spring. 3.3.6 Removing the pinch arm (R) assembly (See Fig.11 and 12) (1) Remove the polywasher and pull out the pinch arm (R) as- sembly.
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3.3.8 Removing the head / tape guide Flywheel assembly (F) Belt (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. (2) Remove the two screws B, the head and the head support spring.
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3.3.10 Disassembling the flywheel assembly (F) FFC pad (See Fig.19 and 20) (1) Push and turn counterclockwise the spring holder (F) to re- lease the three joints p on the bottom of the flywheel. (2) The spring holder (F), the TU spring and the friction gear play come off.
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3.3.13 Removing the gear base arm / gear base link assembly (See Fig.23 to 25) (1) Move the gear base arm in the direction of the arrow. Gear base arm (2) Insert a slotted screwdriver to the gear base spring under Joint t Joints s the gear base arm, and release the gear base arm upward...
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3.3.15 Removing the mode gear Mode gear Mode switch actuator (See Fig.26 and 29) (1) Remove the polywasher on the bottom and pull out the mode gear. 3.3.16 Removing the mode switch actuator (See Fig.26, 27 and 29) (1) Pull out the mode switch actuator at the bottom. REFERENCE: Polywasher When reattaching the mode switch actuator to the main...
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3.3.19 Removing the gear base assembly / take up gear / reflector gear (See Fig.30 to 32) (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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3.3.21 Removing the side bracket assembly Side bracket assembly (See Fig.33 to 37) Boss g' (1) Remove the eject cam plate spring. (2) Push the joint f’ through the slot to remove the load rack downward. (3) Move the eject cam limiter in the direction of the arrow to release it from the boss g’...
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3.3.22 Removing the main motor assembly / sub motor assembly (See Fig.38 to 40) (1) Remove the belt at the bottom. Main motor (2) Remove the polywasher and pull out the mode gear. assembly (3) Pull out the reduction gear (B). Reduction gear (B) (4) Remove the polywasher and pull out the reduction gear Belt...
0dB (1µV,50Ω/open terminal) (7) Laser power meter(Leader:LP800102) (8) Prove for MD (Leader:LP8010-02) (9) Pre masterd disc (TGYS-1) (10)Test disc (JVC:CTS1000) Measuring conditions (Amplifier section) • Power supply voltage....DC14.4V (11V to 16V allowance) • Load impedance.... 4Ω (4Ω to 8Ω allowance) •...
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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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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.MA041)1-39...
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Item Conditions Adjustment and Confirmation methods S.Values Adjust 1. Head azi- Test tape: Head height adjustment muth adjust- SCC-1659 Adjust the azimuth directly. When you adjust the height A line ment VT703 (10kHz) using a mirror tape, remove the cassette housing from the mechanism chassis.
SECTION 5 TROUBLESHOOTING Flow of functional operation untill TOC read (CD) Power ON When the laser diode correctly Set Function CD When the pickup correctly moves emits to the inner area of the disc Microprocessor $82 $81 Microprocessor Disc inserted commands commands 3.3V...
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Feed section Is the voltage output at Is the wiring for IC621 Is 3.3V present at IC621 IC621 pin "40" 5V or 0V? (56)~(64) correct? pin "6"? Check CD 8V Check the vicinity of and 5V. IC621. Is 4V present at both Is 6V or 2V present at Check the feed motor sides of the feed motor?
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Maintenance of laser pickup Replacement of laser pickup (1) Cleaning the pick up lens Before you replace the pick up, please try to clean the lens Turn off the power switch and,disconnect the power cord from the ac outlet. with a alcohol soaked cotton swab. (2) Life of the laser diode When the life of the laser diode has expired, the following symptoms will appear.
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VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY MOBILE ENTERTAINMENT CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MA041) Printed in Japan...
PARTS LIST [ KW-XC939 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix EE ------------------------- Russia - Contents - 3- 2 Exploded view of general assembly and parts list (Block No.M1) 3- 4 CD mechanism assembly and parts list (Block No.MB)
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Exploded view of general assmbly and parts list Block No.
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General assembly Block No. [M][1][M][M] Symbol No. Part No. Part Name Description Local QYSDST2004Z SCREW 2mm x 4mm(x5) VYSH101-009 SPACER LV21157-001A MECHA BKT(CA) QYSDST2604Z SCREW 2.6mm x 4mm QYSDST2604Z SCREW 2.6mm x 4mm(x4) FSYH4036-050 SPACER LV10611-003A TOP CHASSIS LV10612-003A BOTTOM CHASSIS LV33135-001A HEAT SINK LV21156-001A...
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CD mechanism assembly and parts list Block No. Grease TN-2001-1013 TNG-87 GP-501MK CFD-005Z GP-501A...
CD mechanism Block No. [M][B][M][M] Symbol No. Part No. Part Name Description Local 30320101T FRAME 30320102T TOP COVER 30320115T DANPER F (x2) 30320116T DANPER R 303205505T CHASSIS RIVET 303205503T CHANGE P. RVT A 303205301T CLAMPER ASSY 303205304T SPINDLE MOTOR A 30320502T CLAMPER ARM 30320503T...
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Cassette mechanism assembly and parts list Block No. CDS-802JE3...
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Cassette mechanism Symbol No. Part No. Part Name Description Local Block No. [M][P][M][M] 2-1821-0040-D2S PSW-S 2.1 (x3) 2-1711-5040-16S E RING Symbol No. Part No. Part Name Description Local 2-1031-7030-C2S SCREW (x2) X-0802-1009S MAIN CHASSIS AS X-0802-1002S SLIDE CHASSIS A X-0802-1003S SIDE BKT ASSY X-0802-1004S CASSETTE HANGER...
Electrical parts list Main board Symbol No. Part No. Part Name Description Local Block No. [0][1][0][0] NCB31CK-473X C CAPACITOR 0.047uF 16V K Symbol No. Part No. Part Name Description Local NCB31HK-102X C CAPACITOR 1000pF 50V K NCB31HK-103X C CAPACITOR 0.01uF 50V K NCB31HK-103X C CAPACITOR 0.01uF 50V K...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C901 NCB31HK-103X C CAPACITOR 0.01uF 50V K NRSA63J-274X MG RESISTOR 270kΩ 1/16W J C902 QERF1CM-476Z E CAPACITOR 47uF 16V M R108 NRSA63J-473X MG RESISTOR 47kΩ...
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Cassette module board Symbol No. Part No. Part Name Description Local Block No. [0][2][0][0] R759 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J R765 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J Symbol No. Part No. Part Name Description Local R767 NRSA63J-473X MG RESISTOR 47kΩ...
Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R435 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J D571 SML-310PT/KL/-X R437 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J D572 SML-310PT/KL/-X R438 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J D573 SML-310PT/KL/-X R439...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R582 NRSA63J-821X MG RESISTOR 820Ω 1/16W J D501 1SS355-X SI DIODE R583 NRSA63J-821X MG RESISTOR 820Ω 1/16W J D502 1SS355-X SI DIODE R584 NRSA63J-821X MG RESISTOR 820Ω...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C634 NCB31CK-473X C CAPACITOR 0.047uF 16V K R537 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J C635 NCB31CK-473X C CAPACITOR 0.047uF 16V K R538 NRSA63J-473X MG RESISTOR 47kΩ...
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Symbol No. Part No. Part Name Description Local R636 NRSA63J-101X MG RESISTOR 100Ω 1/16W J R637 NRSA63J-105X MG RESISTOR 1MΩ 1/16W J R638 NRSA63J-472X MG RESISTOR 4.7kΩ 1/16W J R639 NRSA63J-472X MG RESISTOR 4.7kΩ 1/16W J R640 NRSA63J-472X MG RESISTOR 4.7kΩ...
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Packing materials and accessories parts list Block No. A2 A3 A4 A5 A6 KIT : A7 A8 3-18...
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Packing and accessories Block No. [M][3][M][M] Symbol No. Part No. Part Name Description Local LVT1099-001A INST BOOK LVT1099-002A INSTALL MANUAL LVT1099-003A MP3 MANUAL BT-54013-6 WARRANTY CARD LV40978-001A CAUTION SHEET VJC3300-001SS BLIND PLATE QYSDSP5006Z SCREW 5mm x 6mm(x8) QYSSSP5006Z SCREW 5mm x 6mm(x8) QAM0531-001 CAR CABLE A 10...
SCHEMATIC DIAGRAMS CD/CASSETTE RECEIVER KW-XC939 CD-ROM No.SML200310 Area suffix EE --------- Russian Federation Contents Block diagram Standard schematic diagrams Printed circuit boards 2-6 to 9 No.MA041SCH COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD. 2003/10...
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. Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check.
Block diagram CN951 CD mecha control board Main board FRONT-L FRONT-R FRONT LRCK TU-Lch VA,VB,VE,VF TU-Rch LINE OUT IC601 MD,LD IC571 FM/AM REAR-L CD RF 24 Bit VOUTL TUNER PACK IC572 REAR-R REAR VOUTR SEEK FOCUS+ CD LPF LINE OUT FE,TE FRONT-L FM/AM...
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VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY MOBILE ENTERTAINMENT CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.MA041SCH)