JVC-MXDK51-cs-sm维修电路原理图.pdf
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1、SERVICE MANUAL COPYRIGHT 2006 Victor Company of Japan, Limited No.MB547 2006/6 COMPACT COMPONENT SYSTEM MB54720066 MX-DK51EE,MX-DK51A,MX-DK51US, MX-DK51UX,MX-DK51UG,MX-DK51UN Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS 1PRECAUTION. . . .
2、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 3DISASSEMBLY .
3、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4、1-5 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 CA-MXDK51 SP-MXDK51C SP-MXDK51FSP-MXDK51WSP-MXDK51FSP-MXDK51SSP-MXDK51S RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB547) SPECIFICATION *Measured at 1 kHz
5、, with tape recording signal 400 mV Design and specifications are subject to change without notice. Amplifier sectionOutput PowerFRONT SPEAKERS100 W per channel, min. RMS, driven into 6 at 1 kHz with no more than 10% total harmonic distortion. CENTER SPEAKER50 W per channel, min. RMS, driven into 6
6、at 1 kHz with no more than 10% total harmonic distortion. SURROUND SPEAKERS 50 W per channel, min. RMS, driven into 6 at 1 kHz with no more than 10% total harmonic distortion. SUBWOOFER100 W per channel, min. RMS, driven into 6 at 63 Hz with no more than 10% total harmonic distortion. Audio input se
7、nsitivity/ Impedance* AUX400 mV/47 k MIC 1/23.0 mV/50 k VIDEO OUTColor systemNTSC/PAL selectable VIDEO (composite)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) (Y) : 1 V(p-p)/75 (PB/PR) : 0.7 V(p-p)/75 Speaker Terminals6 - 1
8、6 (Front speakers) 6 - 16 (Center speaker) 6 - 16 (Surround speakers) 6 - 16 (Subwoofer) Tuner sectionFM tuning range87.50 MHz - 108.00 MHz AM (MW) tuning range531 kHz - 1 710 kHz (at 9 kHz) 530 kHz - 1 710 kHz (at 10 kHz) For Saudi Arabia only530 kHz - 1 600 kHz (at 10 kHz) For Russia only522 kHz -
9、 1 629 kHz Disc player sectionPlayable discDVD Video/DVD Audio/CD/VCD/SVCD CD-R/-RW/-ROM (CD/VCD/SVCD/MP3/WMA/MPEG-1/ MPEG-2/ASF/JPEG/DivX format) DVD-R/-RW (DVD Video/DVD Video Recording (VR)/ MP3/WMA/MPEG-1/MPEG-2/ASF/JPEG/DivX format) +R/+RW (DVD Video format) Dynamic range90 dB Horizontal resolu
10、tion500 lines Wow and flutterImmeasurable Cassette deck section Frequency response Normal (type I)50 Hz - 14 000 Hz Wow and flutter0.15% (WRMS) GeneralPower 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 consumption225 W
11、(at operation) 22 W (on standby) Dimensions (approx.)265 mm 335 mm 370 mm (W/H/D) Mass (approx.)8.4 kg RadioFans.CN 收音机爱 好者资料库 (No.MB547)1-3 SECTION 1 PRECAUTION 1.1Safety Precautions (1) This design of this product contains special hardware and many circuits and components specially for safety purp
12、os- es. For continued protection, no changes should be made to the original design unless authorized in writing by the 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 o
13、r circuitry of the product should not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom. (3)
14、 Many electrical and mechanical parts in the products have special safety-related characteristics. These characteris- 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- ag
15、e, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Ser- vice 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 replaceme
16、nt which does not have the same safety charac- teristics as the recommended replacement parts shown in the Parts List 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 fro
17、m live parts, high temperature parts, moving parts and/or sharp edges for the prevention of electric shock and fire hazard. 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) L
18、eakage shock hazard testing After reassembling the product, always perform an isola- tion check on the exposed metal parts 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 electri
19、cal shock.Do not use a line isolation transformer during this check. Plug the AC line cord directly into the AC outlet. 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,
20、 to a known good earth ground. Any leakage cur- rent must not exceed 0.5mA AC (r.m.s.). Alternate check method Plug the 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
21、 AC-type capacitor between an ex- posed metal part and a known good earth ground. Measure the AC voltage across the resistor 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 vol
22、tage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Voltage measured any must 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)
23、It is the legal responsibility of the repairer to ensure that these safety standards are maintained. (3) Repairs must 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 provide
24、d, check setting for local voltage. 1.3Caution Burrs formed during molding may be left over on some parts of the chassis. 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
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