SERVICE MANUALMINIDISC DECKMICROFILM— Continued on next page —SPECIFICATIONSUS ModelCanadian ModelAEP ModelUK ModelModel Name Using Similar Mechanism MDS-JA20ESMD Mechanism Type MDM-6ABase Unit Type MBU-5COptical Pick-up Type KMS-260B/J1NMDS-JA555ESU.S. and foreign patents licensed from Dolby LaboratoriesLicensing Corporation.Photo : GOLDSystem MiniDisc digital audio systemDisc MiniDiscLaser Semiconductor laser (λ=780 nm)Emission duration : continuousLaser output Less than 44.6 μW** This output is the value measured at a distanceof 200 mm from the objective lens surface on theOptical Pick-up Block with 7 mm aperture.Laser diode propertiesMaterial: GaAlAsRevolutions (CLV) 400 rpm to 900 rpmError correction ACIRC (Advanced Cross InterleaveReed Solomon Code)Sampling frequency 44.1 kHzCoding ATRAC (Adaptive TRansform Acoustic Coding)Modulation system EFM (Eight-to-Fourteen Modulation)Number of channels 2 stereo channelsFrequency response 5 Hz to 20,000 Hz ± 0.3 dBSignal-to-noise ratio Over 105 dB during playbackWow and flutter Below measurable limitInputsJack Input Rated Minimumtype impedance input inputLINE Phono(ANALOG) jacks 47 kΩ 500 mVrms 125 mVrmsINDIGITAL Square Optical waveIN optical lengthOPT1 connector 660 nmjackDIGITAL Square Optical waveIN optical lengthOPT2 connector 660 nmjackDIGITAL Phono 0.5 Vp-pIN jack 75 Ω ±20%COAXIAL