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SERVICE MANUAL
Ver 1.0 2001.02
9-929-257-11 Sony Corporation
2001B0500-1 Audio Entertainment Group
C 2001.2 General Engineering Dept.
MINIDISC DECK
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
SPECIFICATIONS
MDS-S50
Model Name Using Similar Mechanism NEW
MD Mechanism Type MDM-7A
Optical Pick-up Name KMS-260B
Photo: Gray model
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 96 dB during play
Wow and flutter Below measurable limit
Inputs
ANALOG IN Jack type: phono
Impedance: 47 kilohms
Rated input: 500 mVrms
Minimum input:
125 mVrms
DIGITAL IN Connector type: square
optical
Impedance: 660 nm
(optical wave length)
Outputs
PHONES Jack type: stereo phone
Rated output: 10 mW
Load impedance: 32 ohms
ANALOG OUT Jack type: phono
Rated output: 2 Vrms (at
50 kilohms)
Load impedance: over 10
kilohms
General
Power requirements
US and Canadian models: 120 V AC, 60Hz
AEP, UK models: 230 V AC, 50/60Hz
Australian models: 240 V AC, 50/60Hz
Hong Kong models: 220-240 V AC, 50/60Hz
Other models: 110-120/220-240 V AC,
50/60Hz
Adjustable with voltage
selector
Power consumption 15 W
Dimensions (approx.) 280
× 84.5 × 290 mm (w/
h/d) incl. projecting parts
and controls
Mass (approx.) 2.4 kg
Supplied accessories
Audio connecting cords (2)
Optical cable (1)
Remote commander (remote) (1)
R6 (size-AA) batteries (2)
Design and specifications are subject to change
without notice.
US and foreign patents licensed from Dolby
Laboratories.