HarmanKardon-HD7400-cd-维修说明书手册含电器原理图

HD7400CLASS 1 LASER PRODUCTBe Careful of the Laser PickupProduct complies with DHHS rules CFR subchapter J partAlthough you cannot see it from the outside,a laser1040:10 at date of manufacture.pickup is located under the disc tray and a precision lensis built in it.DANGER-invisible laser radiation when open and inter-Since the laser pickup,including the lens element,islock failed or defeated.Avoid direct exposure to theespecially sensitive to dust,keep the disc tray closedbeam.when not in use.Also do not put your hand inside theunit.CAUTION-use of all controls,adjustments or perform-ance of procedures other than those specified herein mayresult in hazardous radiation exposure.CLASS 1LASER PRODUCTSPECIFICATIONSystemCompact Disc Digital AudioLine Output Level/LoadSignal Detection3-Beam Semiconductor LaserImpedance2.0V/10k OhmsError CorrectionCIRC SystemPower SupplySampling Frequency:176.4kHzU.S.A.and Canada models AC 120V,60HzQuantization18-bit LinearInternational model:AC220/240V.50/60HzChannels2 Channel StereoPower Consumption15 WattsFrequency Response:4Hz-20kHz±0.2dBDimensions (WxHxD):17-3/8°x4X13Total Harmonic Distortion:0.008%(1kHz)(443x103X330mm)Dynamic Range:96dBWeight:11bs.(5kg)Signal-to-Noise Ratio:100dBChannel Separation88dB (1kHz)Specifications and components subject to change without notice.Wow FlutterImmeasurableOverall performance will be maintained or improved.Adjustment of this unit requires following measuringinstruments and jigs..Oscilloscope (3 or more modes,100MHz,input Select DCrange)1740A·Test Disc:EIAJ CD-1Distortion Meter 339A2