HarmanKardon-HD300-cd-维修说明书手册含电器原理图

HD300TABLE OF CONTENTSSPECIFICATIONSSAFETY PRECAUTIONS3CONTROLS AND FUNCTIONSREMOTE CONTROL.......................................6DISASSEMBLY PROCEDURES7DISASSEMBLING THE CD PLAYER MECHANICAL ASSEMBLY8POWER CORD REPLACEMENT8BLOCK DIAGRAM9ADJUSTMENT PROCEDURE10INSTALLATION OF DISC DRAWER AND CLAMPER16TROUBLE SHOOTING17IC BLOCK DIAGRAM26GENERAL UNIT EXPLODED VIEW.......28CD PLAYER MECHANISM EXPLODED VIEW......................29GENERAL UNIT PARTS LIST30CD PLAYER MECHANISM PARTS LIST30ELECTRICAL PARTS LIST31PACKAGEP.C.BOARDS............4WIRING DIAGRAM36SCHEMATIC DIAGRAM...............................................37SPECIFICATIONSSystemCompact Disc Digital AudioPower SupplySignal Detection3-Beam Semiconductor LaserGeneral model：AC220/240.50/60HzError CorrectionCIRC SystemCanada modelAC 120V.60HzSampling Frequency (Disc):44.1kHzPower Consumption18 WattsD/A Conversion Frequency 88.2kHzDimensions [W×H×Dj：17-1/2“×4-1/16“×11-1/2Quantization16 Bit Linear(443×103×285mm}Channels2 Channel StereoWeight10.2bs.(4.6kgFrequency Response:4Hz-20kHz±0.5dBAccessoriesStereo Connecting CordsTotal Harmonic Distortion:0.01%(1kHz}Remote ControlDynamic Range:100dBAA Battery(×2]Signal-to-Noise Ratio:98dBChannel Separation80dB (1kHz)Wow FlutterImmeasurableLine Output Level/:2.0W/10k0hmsSpecifications and components subject to change without notice.OverallLoad Impedanceperformance wil be maintained or improved.Adjustment of this unit requires following measuringIMPORTANTinstruments and jigs.Before plugging the unit in,be sure to remove the transpor-Oscilloscope (3 or more modes,100MHz,X-Y inputtation screws on the bottom of the unit.possible)1740ADual Channel Voltmeter (ACVM)MN445B1.Place a cloth under the unit in order to prevent it fromDistortion Meter 339Abeing scratched.Frequency Counter FT-27522.Turn the unit upside down.Optical Power Meter LPM80003.Remove the three transportation screws with a screw●Jitter Meter MJM-634driver,as shown in the illustration below.Low Frequency Oscillator (A.F.OSC)3312ATurntable Base Space Jig SJ-300Diffraction Grating Screwdriver SD-300●Test Discs:Philips Test Sample 5 814 125-2 (Non-Scratched)Philips Test Sample 5A 814 126-2 (Scratched)Sony Type IIINOTE:Be sure to tighten screws by the reverse procedurebefore transporting the unit.