JVC-MXJD5-cs-sm 维修电路原理图.pdf
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1、SERVICE MANUALCOPYRIGHT 2004 Victor Company of Japan, LimitedNo.MB2632004/6COMPACT COMPONENT SYSTEMMB26320046MX-JD5TABLE OF CONTENTS1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32SPECIFI
2、C SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-63DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74ADJUSTME
3、NT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-335TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-40
4、Area suffixUS - SingaporeUW - Brazil,Mexico,PeruUX - Saudi ArabiaUE -Turkey UN - AseanCA-MXJD5RadioFans.CN 收音机爱 好者资料库1-2 (No.MB263)SPECIFICATIONDesign and specifications are subject to change without notice.Amplifier sectionOutput PowerFRONT MAIN SPEAKERS40 W per channel, min. RMS, driven into 6 at
5、1 kHz with no more than 10% total harmonic distortion.FRONT SUBWOOFERS80 W per channel, min. RMS, driven into 6 at 63 Hz with no more than 10% total harmonic distortion.CENTER SPEAKER40 W, min. RMS, driven into 8 at 1 kHz with no more than 10% total harmonic distortion.SURROUND SPEAKERS25 W per chan
6、nel, min. RMS, driven into 16 at 1 kHz 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(Measured at 1 kHz, with tape recording signal 300 mV)AUX IN300 mV/47 kMIC 1/23.0 mV/50 kVIDEO OUTColor system
7、NTSC/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 TerminalsFront main speakers6 - 16 Center speakers8 - 16 Surround speakers16 - 32 6 - 16 (Front subwo
8、ofers) 6 - 16 OthersAV COMPU LINK 2 ( 3.5)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)Disc player sectionPlayable discDVD Video/DVD Audio/CD/VCD/SVCDCD-R/CD-RW (recorded in Audio CD/ Video CD/ Super Video CD/ MP3/
9、 WMA/ JPEG/MPEG-4 format)DVD-R/DVD-RW (recorded in video format)Dynamic range90 dBHorizontal resolution500 linesWow and flutterImmeasurableCassette deck sectionFrequency response Normal (type I)50 Hz - 14 000 HzWow and flutter0.15% (WRMS)GeneralPower requirementAC 110 V / AC 127 V / AC 220 V / AC 23
10、0 V - AC 240 V ,(adjustable with the voltage selector), 50 Hz / 60 HzPower consumption220 W (at operation) 20 W (on standby)Dimensions (approx.)265 mm 335 mm 352 mm (W/H/D)Mass (approx.)8.7 kgRadioFans.CN 收音机爱 好者资料库(No.MB263)1-3SECTION 1PRECAUTION1.1Safety Precautions(1) This design of this product
11、contains special hardware andmany circuits and components specially for safety purpos-es. For continued protection, no changes should be madeto the original design unless authorized in writing by themanufacturer. Replacement parts must be identical tothose used in the original circuits. Services sho
12、uld be per-formed by qualified personnel only.(2) Alterations of the design or circuitry of the product shouldnot be made. Any design alterations of the product shouldnot be made. Any design alterations or additions will voidthe manufacturers warranty and will further relieve themanufacture of respo
13、nsibility for personal injury or propertydamage resulting therefrom.(3) Many electrical and mechanical parts in the products havespecial safety-related characteristics. These characteris-tics are often not evident from visual inspection nor can theprotection afforded by them necessarily be obtained
14、by us-ing replacement components rated for higher voltage, watt-age, etc. Replacement parts which have these specialsafety characteristics are identified in the Parts List of Ser-vice Manual. Electrical components having such featuresare identified by shading on the schematics and by ( ) onthe Parts
15、 List in the Service Manual. The use of a substitutereplacement which does not have the same safety charac-teristics as the recommended replacement 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,cl
16、amps, tubings, barriers and the like to be separated fromlive parts, high temperature parts, moving parts and/orsharp edges for the prevention of electric shock and firehazard. When service is required, the original lead routingand dress should be observed, and it should be confirmedthat they have b
17、een returned to normal, after reassem-bling.(5) Leakage shock hazard testingAfter 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
18、is safe to operate without danger of electrical shock.Do notuse a line isolation transformer during this check. Plug the AC line cord directly into the AC outlet. Using aLeakage Current Tester, measure the leakage currentfrom each exposed metal parts of the cabinet, particular-ly any exposed metal p
19、art 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 methodPlug 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
20、 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 resistor with the ACvoltmeter. Move the resistor connection to each exposed metalpart, particularly any exposed metal part having a returnpath to the ch
21、assis, and measure the AC voltage acrossthe resistor. Now, reverse the plug in the AC outlet andrepeat each measurement. Voltage measured any mustnot 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
22、 safety standards.(2) It is the legal responsibility of the repairer to ensure thatthese safety standards are maintained.(3) Repairs must be made in accordance with the relevantsafety standards.(4) It is essential that safety critical components are replacedby approved parts.(5) If mains voltage sel
23、ector is provided, check setting for localvoltage.1.3CautionBurrs formed during molding may be left over on some partsof the chassis. Therefore, pay 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 si
24、lk-screenprinted side (parts side) of the PWB diagrams, the parts that areprinted over with black such as the resistor ( ), diode ( )and ICP ( ) or 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 manuf
25、acturer. (This regulation dose not Except the J and C version)Good earth groundPlace this probe on each exposedmetal part.AC VOLTMETER(Having 1000 ohms/volts,or more sensitivity)1500 10W0.15 F AC TYPE1-4 (No.MB263)1.5Preventing static electricityElectrostatic discharge (ESD), which occurs when stati
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