JVC-NXD4-cs-sm 维修电路原理图.pdf
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1、SERVICE MANUALCOPYRIGHT 2010 Victor Company of Japan, LimitedNo.MB7262010/2COMPACT COMPONENT SYSTEMMB72620102 SERVICE MANUALNX-D4B,NX-D4E,NX-D4ACOPYRIGHT 2010 Victor Company of Japan, LimitedLead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)Lead free solder used
2、 in the board (material : Sn-Cu, melting point : 230 Centigrade)TABLE OF CONTENTS1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . .
3、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-73DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . .
4、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-165TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17except NX-D4ASP-NXD3SP-NXD3CA-NXD4RadioFans.CN 收音机爱
5、 好者资料库1-2 (No.MB726)SPECIFICATIONNX-D4 for EuropeAmplifier sectionOutput Power230 W (115 W + 115 W) at 3 (10% THD)Audio InputAUDIO INStereo mini ( 3.5 mm)500 mV/47 k (at “AUDIO LVL3”)250 mV/47 k (at “AUDIO LVL2”)125 mV/47 k (at “AUDIO LVL1”)Digital Input/OutputOPTICAL DIGITAL OUTPUT (output only)-21
6、 dBm to -15 dBm (660 nm 30 nm)USB REC/PLAY (input and output)VIDEO OUTColor systemPAL/NTSC (interlaced/progressive)VIDEO (Composite)1 V(p-p)/75 COMPONENT(Y) 1 V(p-p)/75 (PB/PR) 0.7 V(p-p)/75 Speaker impedance3 - 16 Tuner sectionFM tuning range87.50 MHz - 108.00 MHzAM (MW) tuning range522 kHz - 1 629
7、 kHzDisc player sectionDynamic range80 dBHorizontal resolution500 linesWow and flutterImmeasurableiPod sectionPower supplyDC 5 V 500 mA (each iPod dock)USB sectionUSB specificationCompatible with USB 2.0 Full SpeedCompatible deviceMass storage classCompatible systemFAT16, FAT32Output powerDC 5 V 500
8、 mAGeneralPower requirementsAC 230 V , 50 HzPower consumption90 W (at operation)1.00 W or less (at standby)Dimensions (approx.)195 mm 333 mm 313 mm (W H D)Mass (approx.)3.6 kgSystem Speaker-SP-NXD3Type3-way 3-speaker Bass Reflex Type (Magnetically-Shielded Type)Speaker unitsTweeter2.0 cm cone 1Mid R
9、ange5.0 cm cone 1Woofer16.0 cm cone 1Impedance3 Power handling capacity115 WFrequency range40 Hz - 20 000 HzSound pressure level84 dB/WmDimensions205 mm 409.5 mm 290.5 mm (W H D)Mass3.6 kg eachRadioFans.CN 收音机爱 好者资料库(No.MB726)1-3NX-D4 for AAmplifier sectionOutput Power230 W (115 W + 115 W) at 3 (10%
10、 THD)Audio InputAUDIO INStereo mini ( 3.5 mm)500 mV/47 k (at “AUDIO LVL3”)250 mV/47 k (at “AUDIO LVL2”)125 mV/47 k (at “AUDIO LVL1”)Digital Input/OutputOPTICAL DIGITAL OUTPUT (output only)-21 dBm to -15 dBm (660 nm 30 nm)USB REC/PLAY (input and output)VIDEO OUTColor systemPAL/NTSC (interlaced/progre
11、ssive)VIDEO (Composite)1 V(p-p)/75 COMPONENT(Y) 1 V(p-p)/75 (PB/PR) 0.7 V(p-p)/75 Speaker impedance3 - 16 Tuner sectionFM tuning range87.50 MHz - 108.00 MHzAM (MW) tuning range522 kHz - 1 629 kHzDisc player sectionDynamic range80 dBHorizontal resolution500 linesWow and flutterImmeasurableiPod sectio
12、nPower supplyDC 5 V 500 mA (each iPod dock)USB sectionUSB specificationCompatible with USB 2.0 Full SpeedCompatible deviceMass storage classCompatible systemFAT16, FAT32Output powerDC 5 V 500 mAGeneralPower requirementsAC 240 V , 50 HzPower consumption90 W (at operation)16 W or less (at standby)1 W
13、or less (at ECO mode)Dimensions (approx.)195 mm 333 mm 313 mm (W H D)Mass (approx.)3.6 kgSystem Speaker-SP-NXD3Type3-way 3-speaker Bass Reflex Type (Magnetically-Shielded Type)Speaker unitsTweeter2.0 cm cone 1Mid Range5.0 cm cone 1Woofer16.0 cm cone 1Impedance3 Power handling capacity115 WFrequency
14、range40 Hz - 20 000 HzSound pressure level84 dB/WmDimensions205 mm 409.5 mm 290.5 mm (W H D)Mass3.6 kg each1-4 (No.MB726)SECTION 1PRECAUTION1.1Safety Precautions(1) This design of this product contains special hardware andmany circuits and components specially for safety purpos-es. For continued pro
15、tection, 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 be per-formed by qualified personnel only.(2) Alterations of the design or circuitry of the product sho
16、uldnot 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 responsibility for personal injury or propertydamage resulting therefrom.(3) Many electrical and mechanical part
17、s 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 us-ing replacement components rated for higher voltage, watt-age, etc. Replacement parts which have thes
18、e 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 List in the Service Manual. The use of a substitutereplacement which does not have the same safety charac-
19、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,clamps, tubings, barriers and the like to be separated fromlive parts, high temperature parts, moving parts a
20、nd/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 returned to normal, after reassem-bling.(5) Leakage shock hazard testingAfter reassembling the product,
21、 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 safe to operate without danger of electrical shock.Do notuse a line isolation transformer during this ch
22、eck. 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 having a return path to thechassis, to a known good earth ground. Any leakage cur-rent must not exceed
23、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 10W resistorparalleled by a 0.15F AC-type capacitor between an ex-posed metal part and a known good earth
24、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 chassis, and measure the AC voltage acrossthe resistor. Now, reverse the plug in the AC outlet andrepeat each
25、 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 safety standards.(2) It is the legal responsibility of the repairer to ensure thatthese safety standards a
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