JVC-MXDK51-cs-sm 维修电路原理图.pdf
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1、SERVICE MANUALCOPYRIGHT 2006 Victor Company of Japan, LimitedNo.MB5472006/6COMPACT COMPONENT SYSTEMMB54720066MX-DK51EE,MX-DK51A,MX-DK51US,MX-DK51UX,MX-DK51UG,MX-DK51UNLead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)TABLE OF CONTENTS1PRECAUTION. . . . . . . . .
2、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-53DISASSEMBLY . . . . . . .
3、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-54ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-55TROUBLESH
4、OOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5CA-MXDK51SP-MXDK51CSP-MXDK51FSP-MXDK51WSP-MXDK51FSP-MXDK51SSP-MXDK51SRadioFans.CN 收音机爱 好者资料库1-2 (No.MB547)SPECIFICATION*Measured at 1 kHz, with tape recording
5、 signal 400 mVDesign 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 at 1 kHz with no more th
6、an 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 sensitivity/Impedance*AUX400
7、mV/47 kMIC 1/23.0 mV/50 kVIDEO OUTColor systemNTSC/PAL selectableVIDEO (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 - 16 (Front speakers)6 - 16 (Center s
8、peaker)6 - 16 (Surround speakers)6 - 16 (Subwoofer)Tuner sectionFM tuning range87.50 MHz - 108.00 MHzAM (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 - 1 629 kHzDisc player sectionPlayable disc
9、DVD Video/DVD Audio/CD/VCD/SVCDCD-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 dBHorizontal resolution500 linesWow and flutterImmeasurableCassette d
10、eck section Frequency response Normal (type I)50 Hz - 14 000 HzWow 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 HzPower consumption225 W (at operation)22 W (on standby)Dimensions (approx.)265
11、mm 335 mm 370 mm (W/H/D)Mass (approx.)8.4 kgRadioFans.CN 收音机爱 好者资料库(No.MB547)1-3SECTION 1PRECAUTION1.1Safety Precautions(1) This design of this product contains special hardware andmany circuits and components specially for safety purpos-es. For continued protection, no changes should be madeto the
12、original design unless authorized in writing by themanufacturer. Replacement parts must be identical tothose used in the original circuits. Services should be per-formed by qualified personnel only.(2) Alterations of the design or circuitry of the product shouldnot be made. Any design alterations of
13、 the product shouldnot be made. Any design alterations or additions will voidthe manufacturers warranty and will further relieve themanufacture of responsibility for personal injury or propertydamage resulting therefrom.(3) Many electrical and mechanical parts in the products havespecial safety-rela
14、ted characteristics. These characteris-tics are often not evident from visual inspection nor can theprotection afforded by them necessarily be obtained by us-ing replacement components rated for higher voltage, watt-age, etc. Replacement parts which have these specialsafety characteristics are ident
15、ified in the Parts List of Ser-vice Manual. Electrical components having such featuresare identified by shading on the schematics and by ( ) onthe Parts List in the Service Manual. The use of a substitutereplacement which does not have the same safety charac-teristics as the recommended replacement
16、parts shown inthe Parts List of Service Manual may create shock, fire, orother hazards.(4) The leads in the products are routed and dressed with ties,clamps, tubings, barriers and the like to be separated fromlive parts, high temperature parts, moving parts and/orsharp edges for the prevention of el
17、ectric shock and firehazard. When service is required, the original lead routingand dress should be observed, and it should be confirmedthat they have been returned to normal, after reassem-bling.(5) Leakage shock hazard testingAfter reassembling the product, always perform an isola-tion check on th
18、e exposed metal parts of the product (an-tenna terminals, knobs, metal cabinet, screw heads,headphone jack, control shafts, etc.) to be sure the productis safe to operate without danger of electrical shock.Do notuse a line isolation transformer during this check. Plug the AC line cord directly into
19、the AC outlet. Using aLeakage Current Tester, measure the leakage currentfrom each exposed metal parts of the cabinet, particular-ly any exposed metal part having a return path to thechassis, to a known good earth ground. Any leakage cur-rent must not exceed 0.5mA AC (r.m.s.). Alternate check method
20、Plug the AC line cord directly into the AC outlet. Use anAC voltmeter having, 1,000 per volt or more sensitivityin the following manner. Connect a 1,500 10W resistorparalleled 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
21、resistor with the ACvoltmeter. Move the resistor connection to each exposed metalpart, particularly any exposed metal part having a returnpath to the chassis, and measure the AC voltage acrossthe resistor. Now, reverse the plug in the AC outlet andrepeat each measurement. Voltage measured any mustno
22、t exceed 0.75 V AC (r.m.s.). This corresponds to 0.5mA AC (r.m.s.). 1.2Warning(1) This equipment has been designed and manufactured tomeet international safety standards.(2) It is the legal responsibility of the repairer to ensure thatthese safety standards are maintained.(3) Repairs must be made in
23、 accordance with the relevantsafety standards.(4) It is essential that safety critical components are replacedby approved parts.(5) If mains voltage selector is provided, check setting for localvoltage.1.3CautionBurrs formed during molding may be left over on some partsof the chassis. Therefore, pay
24、 attention to such burrs in the case of pre-forming repair of this system.1.4Critical parts for safetyIn regard with component parts appearing on the silk-screenprinted side (parts side) of the PWB diagrams, the parts that areprinted over with black such as the resistor ( ), diode ( )and ICP ( ) or
25、identified by the mark nearby are criticalfor safety. When replacing them, be sure to use the parts of thesame type and rating as specified by the manufacturer. (This regulation dose not Except the J and C version)Good earth groundPlace this probe on each exposedmetal part.AC VOLTMETER(Having 1000 o
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