Sony MDS-S50 User Manual
Mds-s50, Service manual, Minidisc deck

SERVICE MANUAL
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
µ
W
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
Ч
84.5
Ч
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.
Document Outline
- COVER
- SELF-DIAGNOSIS FUNCTION
- TABLE OF CONTENTS
- SERVICING NOTES
- GENERAL
- DISASSEMBLY
- TEST MODE
- ELECTRICAL ADJUSTMENTS
- DIAGRAMS
- BLOCK DIAGRAM – SERVO Section –
- BLOCK DIAGRAM – MAIN Section –
- NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
- PRINTED WIRING BOARDS – BD Board –
- SCHEMATIC DIAGRAM – BD Board (1/2) –
- SCHEMATIC DIAGRAM – BD Board (2/2) –
- PRINTED WIRING BOARD – MAIN Board (Component Side) –
- PRINTED WIRING BOARD – MAIN Board (Conductor Side) –
- SCHEMATIC DIAGRAM – MAIN Board (1/3) –
- SCHEMATIC DIAGRAM – MAIN Board (2/3) –
- SCHEMATIC DIAGRAM – MAIN (3/3)/PT/VOL SEL Boards –
- PRINTED WIRING BOARDS – PT/VOL SEL Boards –
- PRINTED WIRING BOARDS – DISPLAY/POWER SW Boards –
- SCHEMATIC DIAGRAM – DISPLAY/POWER SW Boards –
- Waveforms
- IC Block Diagrams
- IC PIN FUNCTION DESCRIPTION
- EXPLODED VIEWS
- ELECTRICAL PARTS LIST
- REVISION HISTORY