SERVICE MANUAL
MINIDISC DECK
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SPECIFICATIONS
US Model
Canadian Model
AEP Model
UK Model
Model Name Using Similar Mechanism MDS-JA555ES
MD Mechanism Type MDM-6J
Base Unit Type MBU-5J
Optical Pick-up Type KMS-260B/J1N
MDS-JA333ES
U.S. and foreign patents licensed from Dolby Laboratories
Licensing Corporation.
Photo : GOLD
System MiniDisc digital audio system
Disc MiniDisc
Laser Semiconductor laser ( λ = 780 nm)
Emission duration: continuous
Laser output MAX 44.6 µW
1
)
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 100 dB during play
Wow and flutter Below measurable limit
Inputs
ANALOG IN Jack type: phono
Impedance: 47 k Ω
Rated input: 500 mVrms
Minimum input: 125 mVrms
DIGITAL IN OPT1 Connector type: square optical
Impedance: 660 nm (optical wave
length)
DIGITAL IN OPT2 Connector type: square optical
Impedance: 660 nm (optical wave
length)
DIGITAL IN COAXIAL Jack type: phono
Impedance: 75 Ω
Rated input: 0.5 Vp-p, ±20 %
Outputs
PHONES Jack type: stereo phone
Rated output: 28 mW
Load impedance: 32 Ω
ANALOG OUT Jack type: phono
Rated output: 2.5 Vrms (at 50
k Ω)
Load impedance: over 10 k Ω
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