JVC-NXT10-cs-sm 维修电路原理图.pdf
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1、SERVICE MANUALCOPYRIGHT 2010 Victor Company of Japan, LimitedNo.MB7072010/2COMPACT COMPONENT SYSTEMMB70720102 SERVICE MANUALNX-T10E, NX-T10EN, NX-T10EV, NX-T10UGCOPYRIGHT 2010 Victor Company of Japan, LimitedLead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)TABL
2、E OF CONTENTS1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3、 . . . . . 1-73DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4、. . . . . . . . . . . . . 1-115TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11SP-NXT10FSP-NXT10FSP-NXT10WCA-NXT10Except UGRadioFans.CN 收音机爱 好者资料库1-2 (No.MB707)SPECIFICATIONDesigns & specifications
5、are subject to change without notice.Main unit-CA-NXT10Input/outputHDMI inputHDMI IN 1, HDMI IN 2HDMI outputHDMI MONITOR OUTUSB terminalUSB MEMORY REC/PLAYAnalog audio inputAUDIO IN 500 mV/50 kDigital audio inputDIGITAL IN (OPTICAL) -21 dBm to -15 dBm (660 nm 30 nm)Analog video outputVIDEO OUTColor
6、systemPAL (E, EN, EV) : NTSC/PAL (UG)VIDEOComposite video, 1 V(p-p)/75 COMPONENTComponent video (interlaced/progressive)(Y): 1 V(p-p)/75 (PB/PR): 0.7 V(p-p)/75 TunerFM tuning range87.50 MHz - 108.00 MHzDisc playerPlayable discDVD Video/CD/VCD/SVCDCD-R/CD-RW (CD/SVCD/VCD/MP3/WMA/JPEG/MPEG-1/MPEG-2/Di
7、vX format)DVD-R/-RW (DVD Video/DVDVR/MP3/WMA/JPEG/MPEG-1/MPEG-2/DivX format)+R/+RW (DVD Video/MP3/WMA/JPEG/MPEG-1/MPEG-2/DivX format)Dynamic range80 dBHorizontal resolution500 linesWow and flutterImmeasurableUSBPlayable filesMP3/WMA/JPEG/MPEG-1/MPEG-2/DivX formatCD recording formatMP3USB specificati
8、onCompatible with USB 2.0 Full SpeedCompatible deviceMass storage classCompatible systemFAT16, FAT32Bus power supplyDC 5 V 500 mAHDMIVideo resolution576p, 720p, 1080i, 1080pOutput power (HDMI MONITOR OUT)DC 5 V 55 mAGeneralMass (approx.)2.3 kg (without the stand)Dimensions (approx.)Placed vertically
9、(1): 240mm, (2): 420mm, (3): 64mm, (4): 70mm, (5): 134mmPlaced horizontally (1): 420mm, (2): 70mm, (3): 240mm(3)(4)(5)(1)(2)(1)(3)(2)RadioFans.CN 收音机爱 好者资料库(No.MB707)1-3Designs & specifications are subject to change without notice.Subwoofer-SP-NXT10WOutput powerFront160 W (80 W + 80 W) at 4 (10% THD
10、)Surround160 W (80 W + 80 W) at 4 (10% THD)Subwoofer200 W at 6 (10% THD)SpeakerBass reflex type16 cm cone 1Power handling capacity200 WFrequency range42 Hz - 150 HzSound pressure level75 dB/W mPower requirementsAC 230 V , 50 Hz (E, EN, EV) : AC110V - 240V , 50Hz/60Hz (UG)Power consumption80 W (at op
11、eration of the System) for E, EN, EV : 95W (at operation of the System) for UG0.85 W (at standby)Mass (approx.)10 kgDimensions (approx.)231 mm 393 mm 370.5 mm (W/H/D)Speakers-SP-NXT10FSpeaker1 way bass reflex type (magnetically shielded)Front8 cm cone 1Surround5.5 cm cone 1Impedance4 Power handling
12、ca-pacityFront80 WSurround80 WFrequency rangeFront80 Hz - 20 kHzSurround125 Hz - 20 kHzSound pressure levelFront80 dB/W mSurround71 dB/W mMass (approx.)1.3 kg eachDimensions (approx.)100 mm 240 mm 128 mm (W/H/D)1-4 (No.MB707)SECTION 1PRECAUTION1.1Safety Precautions(1) This design of this product con
13、tains 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 should
14、 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 responsi
15、bility 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 by
16、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 Li
17、st 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,clamp
18、s, 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 been
19、 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 productis
20、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 part
21、 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 10
22、W 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 chass
23、is, 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 sa
24、fety 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 select
25、or 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 silk-
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