MDS-JE770

MDS-JE770 SERVICE MANUAL Ver 1.0 2001. 05 AEP Model UK Model E Model Foreign patents licensed form Dolby Laboratories Licensing Corporation. Model Name Using Similar Mechanism MD Mechanism Type Optical Pick-up Type MDS-S50 MDM-7A KMS-260B/260E SPECIFICATIONS System MiniDisc digital audio system Disc MiniDisc Laser Semiconductor laser ( λ = 780 nm) Emission duration: continuous Laser output MAX 44.6 µW1) 1) This output is the value measured at a distance of 200 mm from the objective lens surface on the Optical Pick-up Block with 7 mm aperture. Laser diode Material: GaAlAs Revolutions (CLV) 400 rpm to 900 rpm Error correction ACIRC (Advanced Cross Interleave Reed Solomon Code) Sampling frequency 44.1 kHz Coding ATRAC (Adaptive TRansform Acoustic Coding)/ATRAC 3 Modulation system EFM (Eight-to-Fourteen Modulation) Number of channels 2 stereo channels Frequency response 5 to 20,000 Hz ± 0.3 dB Signal-to-noise ratio Over 98 dB during play Wow and flutter Below measurable limit I npu ts ANALOG IN Jack type: phono Impedance: 47 kilohms Rated input: 500 mVrms Minimum input: 125 mVrms DIGITAL OPTICAL IN Connector type: square optical Impedance: 660 nm (optical wave length) DIGITAL COAXIAL IN (European model only) Jack type: phono Impedance: 75 ohms Rated input: 0.5 Vp-p, ±20 % Ou tputs PHONES ANALOG OUT Jack type: stereo phone Rated output: 28 mW Load impedance: 32 ohms Jack type: phono Rated output: 2 Vrms (at 50 kilohms) Load impedance: over 10 kilohms Connector type: square ...