JVC-MXDK1-cs-sm维修电路原理图.pdf

《JVC-MXDK1-cs-sm维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《JVC-MXDK1-cs-sm维修电路原理图.pdf（67页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUAL COPYRIGHT 2006 Victor Company of Japan, Limited No.MB515 2006/6 COMPACT COMPONENT SYSTEM MB51520066 MX-DK1US,MX-DK1UW,MX-DK1UG,MX-DK1UN, MX-DK3US,MX-DK3UW,MX-DK3UG,MX-DK3UN,MX-DK15UN Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONT

2、ENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、. . 1-7 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、 . . . . . . . . . . 1-19 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21 CA-MXDK3SP-MXDK3FSP-MXDK3F CA-MXDK1SP-MXDK1FSP-MXDK1F CA-MXDK15SP-MXDK15FSP-MXDK15F SP-MXDK3W RadioFans.CN 收音机爱 好者资料库 1-2

5、(No.MB515) SPECIFICATION Amplifier sectionOutput PowerCA-MXDK1/CA-MXDK1590 W per channel, min. RMS, driven into 6 at 1 kHz with no more than 10% total harmonic distortion. CA-MXDK3MAIN SPEAKERS100 W per channel, min. RMS, driven into 6 at 1 kHz with no more than 10% total harmonic distortion. SUBWOO

6、FERS100 W per channel, min. RMS, driven into 6 at 63 Hz with no more than 10% total harmonic distortion. Digital outputOPTICAL DIGITAL OUTPUT-21 dBm to -15 dBm (660 nm 30 nm) Audio input sensitivity/ Impedance*1 AUX400 mV/47 k MIC 1/23.0 mV/50 k VIDEO OUTColor systemNTSC/PAL selectable VIDEO (compos

7、ite)1 V(p-p)/75 S-VIDEOY (luminance)1 V(p-p)/75 C (chrominance, burst) 0.286 V(p-p)/75 COMPONENT (Interlace/Progressive: CA-MXDK5 only) (Y)1 V(p-p)/75 (PB/PR)0.7 V(p-p)/75 Speaker Terminals6 - 16 (Main speakers) 6 - 16 (Subwoofers) Tuner sectionFM tuning range87.50 MHz - 108.00 MHz AM (MW) tuning ra

8、nge531 kHz - 1 710 kHz (at 9 kHz) 530 kHz - 1 710 kHz (at 10 kHz) 531 kHz - 1 602 kHz (at 9 kHz) (For Saudi Arabia only) 530 kHz - 1 600 kHz (at 10 kHz) Disc player sectionPlayable discDVD Video/DVD Audio*2/CD/VCD/SVCD CD-R/-RW/-ROM (CD/VCD/SVCD/MP3/WMA/MPEG- 1/MPEG-2/ASF*2/JPEG/DivX*2 format) DVD-R

9、/-RW (DVD Video/DVD Video Recording (VR)/ MP3/WMA/MPEG-1/MPEG-2/ASF*2/JPEG/DivX*2 for- mat) +R/+RW (DVD Video format) Dynamic range90 dB Horizontal resolution500 lines Wow and flutterImmeasurable Cassette deck section Frequency response Normal (type I)50 Hz - 14 000 Hz Wow and flutter0.15% (WRMS) Ge

10、neralPower requirementAC 110 V / AC 127 V / AC 220 V / AC 230 V - AC 240 V , (adjustable with the voltage selector), 50 Hz / 60 Hz Power consumption at operation160 W (CA-MXDK3) 95 W (CA-MXDK1/ CA-MXDK15) on standby20 W (CA-MXDK3) 17 W (CA-MXDK1/ CA-MXDK15) Dimensions (approx.)265 mm 337 mm 370 mm (

11、W/H/D) Mass (approx.)CA-MXDK5/CA-MXDK38.4 kg CA-MXDK1/CA-MXDK157.9 kg RadioFans.CN 收音机爱 好者资料库 (No.MB515)1-3 *1: Measured at 1 kHz, with tape recording signal 400 mV) *2: CA-MXDK5 only Design and specifications are subject to change without notice. Speaker section (except for MX-DK5) Main speakers (S

12、P-MXDK3F/ SP-MXDK1F/ SP-MXDK15F) Type3-Way 3-Speaker Bass Reflex Type (Magnetically-Shielded Type) SpeakersWoofer16 cm cone 1 Midrange5 cm cone 1 Tweeter2 cm dome 1 Power handling capacity100 W (SP-MXDK3F) 80 W (SP-MXDK1F/SP-MXDK15F) Impedance6 Frequency range45 Hz - 20 000 Hz Sound pressure level85

13、 dB/Wm Dimensions (approx.)215 mm 337 mm 259 mm (W/H/D) Mass (approx.)3.7 kg each Subwoofer (SP-MXDK3W) (only for MX-DK3) Type1-Way Bass Reflex Type (Magnetically-Shielded Type) Speaker16 cm cone 1 Power handling capacity100 W Impedance6 Dimensions (approx.)215 mm 337 mm 259 mm (W/H/D) Mass (approx.

14、)3.5 kg 1-4 (No.MB515) SECTION 1 PRECAUTION 1.1Safety Precautions (1) This design of this product contains special hardware and many circuits and components specially for safety purpos- es. For continued protection, no changes should be made to the original design unless authorized in writing by the

15、 manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be per- formed by qualified personnel only. (2) Alterations of the design or circuitry of the product should not be made. Any design alterations of the product should not be made. Any design al

16、terations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom. (3) Many electrical and mechanical parts in the products have special safety-related characteristics. These characteris-

17、tics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by us- ing replacement components rated for higher voltage, watt- age, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Ser- vic

18、e Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety charac- teristics as the recommended replacement parts shown in the Parts List

19、of Service Manual may create shock, fire, or other hazards. (4) The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of electric shock and fire ha

20、zard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after reassem- bling. (5) Leakage shock hazard testing After reassembling the product, always perform an isola- tion check on the exposed metal p

21、arts of the product (an- tenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.Do not use a line isolation transformer during this check. Plug the AC line cord directly into the AC outlet

22、. Using a Leakage Current Tester, measure the leakage current from each exposed metal parts of the cabinet, particular- ly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage cur- rent must not exceed 0.5mA AC (r.m.s.). Alternate check method Plug th

23、e AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15F AC-type capacitor between an ex- posed metal part and a known good earth ground. Measure the AC voltage across the re

24、sistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Voltage measured any mus

25、t not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). 1.2Warning (1) This equipment has been designed and manufactured to meet international safety standards. (2) It is the legal responsibility of the repairer to ensure that these safety standards are maintained. (3) Repairs must

26、be made in accordance with the relevant safety standards. (4) It is essential that safety critical components are replaced by approved parts. (5) If mains voltage selector is provided, check setting for local voltage. 1.3Caution Burrs formed during molding may be left over on some parts of the chass

27、is. Therefore, pay attention to such burrs in the case of pre- forming repair of this system. 1.4Critical parts for safety In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), d

28、iode ( ) and ICP ( ) or identified by the mark nearby are critical for safety. When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer. (This regulation dose not Except the J and C version) Good earth ground Place this probe on each exposed metal pa

29、rt. AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15 F AC TYPE (No.MB515)1-5 1.5Preventing 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 (

30、optical pickup). Take care to prevent this when performing repairs. 1.5.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products. Be careful to use proper grounding in the area where repairs

31、 are being performed. (1) Ground the workbench Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical pickup) on it. (2) Ground yourself Use an anti-static wrist strap to release any static electricity built

32、up in your body. (3) Handling the optical pickup In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.) Do not us

33、e a tester to check the condition of the laser diode in the optical pickup. The testers internal power source can easily destroy the laser diode. 1.6Handling the traverse unit (optical pickup) (1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.

34、 (2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a time when attaching it to t

35、he connector. (3) Handle the flexible cable carefully as it may break when subjected to strong force. (4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it. 1.7Attention when traverse unit is decomposed *Please refer to Disassembly method in the text

36、for the pickup unit. Apply solder to the short land sections before the card wire is disconnected from the connecto on the servo board. (If the card wire is disconnected without applying solder, the pickup may be destroyed by static electricity.) In the assembly, be sure to remove solder from the sh

37、ort land sections after connecting the card wire. 1M Conductive material (conductive sheet) or iron palate (caption) Anti-static wrist strap DVD changer mechanism assembly Switch board DVD traverse mechanism assembly DVD servo board 1-6 (No.MB515) 1.8Important for laser products 1.CLASS 1 LASER PROD

38、UCT 2.CAUTION : (For U.S.A.) Visible and/or invisible class II laser radiation when open. Do not stare into beam. (Others) Visible and/or invisible class 1M laser radiation when open. Do not view directly with optical instruments. 3.CAUTION : Visible and/or invisible laser radiation when open and in

39、ter lock failed or defeated. Avoid direct exposure to beam. 4.CAUTION : This laser product uses visible and/or invisible laser radiation and is equipped with safety switches which prevent emission of radiation when the drawer is open and the safety interlocks have failed or are defeated. It is dange

40、rous to defeat the safety switches. 5.CAUTION : If safety switches malfunction, the laser is able to function. 6.CAUTION : Use of controls, adjustments or performance of procedures other than those specified here in may result in hazardous radiation exposure. REPRODUCTION AND POSITION OF LABELS and

41、PRINT ! Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. WARNING LABEL and PRINT (No.MB515)1-7 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. 1-8 (No.MB515) SECTION 3 DISASSEM

42、BLY 3.1Main body 3.1.1Removing the metal cover (See Fig.1, 2) (1) Remove the six screws A attaching the metal cover. (See Fig.1) (2) Remove the two screws B attaching the metal cover. (See Fig.2) Fig.1 Fig.2 A L A A J K A A B (No.MB515)1-9 3.1.2Removing the DVD mechanism assembly (See Fig.3) (1) Dis

43、connect the card wires from connector CN300, CN301 and CN303 of the main board. (2) Remove the three screws C attaching the DVD mecha- nism assembly. Fig.3 C CN300 CN301 CN302 1-10 (No.MB515) 3.1.3Removing the front panel assembly (See Fig.4 to 7) (1) Disconnect the connector wires from connector CN

44、103 of the transformer board. (See Fig.4) (2) Disconnect the card wires from connector CN303, CN306 and CN307 of the main board. (See Fig.5) (3) Disconnect the connector wire from connector CN140 of the amplifier board. (See Fig.6) (4) Remove the two screws D attaching the front panel assem- bly fro

45、m bottom side of main body. (See Fig.7) (5) Remove the one screw E attaching the front panel assem- bly from left side of main body. (See Fig.4) (6) Remove the one screw F attaching the front panel assem- bly from right side of main body. (See Fig.5) (7) Remove the one screw G attaching the earth wi

46、re from switch board to main board. (See Fig.5) (8) Disengage the hook a and hook b of the both side of the front panel and then take out the front panel assembly. (See Fig.4, 5) 3.1.4Removing the center chassis (See Fig.1, 5) (1) Disconnect the connector wire from connector CN330 of the main board.

47、 (See Fig. 5) (2) Remove the one screw H attaching the center chassis. (See Fig. 5) (3) Remove the two screws J attaching the center chassis. (See Fig. 1) 3.1.5Removing the tuner pack (See Fig.1, 5) (1) Disconnect the card wire from connector CN335 of the main board. (See Fig. 5) (2) Remove the two

48、screws K attaching the tuner pack. (See Fig.1) Fig.4 Fig.5 Fig.6 Fig.7 CN103 E ca CN303CN309 CN311 CN306 CN330 CN335 CN307 CN313 CN312 CN314 F H G d b CN140 D (No.MB515)1-11 3.1.6Removing the rear panel (See Fig.1, 4, 5, 8 and 9) (1) Disconnect the parallel wire from connector CN210 of the sub woofe

49、r jack board. (See Fig.8) (2) Remove the one screw L attaching the rear cover. (See Fig. 1) (3) Remove the twelve screws M attaching the rear panel. (See Fig. 9) (4) Disengage the hook c and hook d of the rear panel and then take out the rear panel. (See Fig.4, 5) Fig.8 Fig.9 3.1.7Removing the main board (See Fig. 5) (1) Disconnect the card wire from connector CN312, CN313 and CN314 of the main board. (2) Disengage the connector CN309 and CN311 connect to primary board and main board and then take out the main board