JVC-NXF40-cs-sm 维修电路原理图.pdf
《JVC-NXF40-cs-sm 维修电路原理图.pdf》由会员分享,可在线阅读,更多相关《JVC-NXF40-cs-sm 维修电路原理图.pdf(16页珍藏版)》请在收音机爱好者资料库上搜索。
1、SERVICE MANUALCOPYRIGHT 2009 Victor Company of Japan, LimitedNo.MB6952009/4COMPACT COMPONENT SYSTEMMB69520094 SERVICE MANUALNX-F30B, NX-F30E, NX-F30EN, NX-F40B, NX-F40E, NX-F40ENCOPYRIGHT 2009 Victor Company of Japan, LimitedLead free solder used in the board (material : Sn-Ag-Cu, melting point : 21
2、9 Centigrade)Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade)TABLE OF CONTENTS1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32SPECIFIC SERVICE INSTRUC
3、TIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-63DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-64ADJUSTMENT . . . . . . .
4、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-145TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15CA-NXF40SP-NXF40F
5、CA-NXF30SP-NXF30FSP-NXF40FSP-NXF30FSP-NXF30WRadioFans.CN 收音机爱 好者资料库1-2 (No.MB695)SPECIFICATIONMain unit (CA-NXF40/CA-NXF30)Designs and specifications are subject to change without notice.TunerFM frequency87.50 MHz - 108.00 MHzTerminal (front of the main unit)USB digital input terminal 1Audio output
6、headphone terminal 1Impedance16 - 1 kTerminal (rear of the main unit)Audio output speaker terminals 1Left/right speakersOutput power220 W (55 W 4) at 3 (1 kHz/10% THD)Impedance3 - 16 SubwooferOutput power180 W at 6 (100 Hz/10% THD)Impedance6 - 16 Optical digital input terminal 1-23 dBm to -15 dBmOpt
7、ical digital output terminal 1-23 dBm to -15 dBmComponent video output terminals 1Y1.0 Vp-p, 75 terminatedPB0.7 Vp-p, 75 terminatedPR0.7 Vp-p, 75 terminatedComposite video output terminal 11.0 Vp-p, 75 terminatedAudio input terminals 1500 mV/47 kHDMI monitor output terminal 1FM antenna terminal 1USB
8、Compatible with USB 2.0 Full-SpeedCompatible deviceUSB mass storage class deviceCompatible file systemFAT16, FAT32Output powerDC 5 V = 500 mAHDMIOutput powerDC 5 V = 55 mAGeneralPower sourceAC 230 V , 50 HzPower consumption (in operation)100 WPower consumption (on standby)1 W or lessDimensions (W H
9、D) including projecting parts312 mm 95 mm 312.3 mmMass3.5 kgSpeakers (SP-NXF40F/SP-NXF30F)Type1-way bass reflex typeMagnetically shielded typeSpeaker driverFront ch5.5 cm coneSurround ch5.5 cm conePower handling capacityFront ch55 WSurround ch55 WImpedance3 Frequency range80 Hz - 20 kHzSound pressur
10、e level77 dB/W/mDimensions (W H D) including projection parts88 mm 203 mm 127 mmSubwoofer (SP-NXF30W)TypeBass reflex typeSpeaker driver16 cm conePower handling capacity180 WImpedance6 Frequency range30 Hz - 200 HzSound pressure level76 dB/W/mDimensions (W H D)300 mm 301 mm 303 mmMass8.2 kgRadioFans.
11、CN 收音机爱 好者资料库(No.MB695)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 original design unless authorized in writing by theman
12、ufacturer. 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 the product shouldnot be made. Any design alterations
13、 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-related characteristics. These characteris-tics are often
14、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 identified in the Parts List of Ser-vice Manual. Electrical
15、 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 parts shown inthe Parts List of Service Manual may cre
16、ate 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 electric shock and firehazard. When service is required,
17、 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 the exposed metal parts of the product (an-tenna termina
18、ls, 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 the AC outlet. Using aLeakage Current Tester, measure
19、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 methodPlug the AC line cord directly into the AC outlet. Use
20、 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 resistor with the ACvoltmeter. Move the resistor conne
21、ction 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 mustnot exceed 0.75 V AC (r.m.s.). This corresponds to 0.5mA
22、 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 accordance with the relevantsafety standards.(4) It i
23、s 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 attention to such burrs in the case of pre-forming re
24、pair 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 identified by the mark nearby are criticalfor safety.
25、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 ohms/volts,or more sensitivity)1500 10W0.15 F AC TYPE1-
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- JVC-NXF40-cs-sm 维修电路原理图 JVC NXF40 cs sm 维修 电路 原理图