Sony SONY MINIDISC DECK MDS-JE770 User's Manual

Sony Outdoor Storage User's Manual - SONY MINIDISC DECK MDS-JE770.
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MDS-JE770

SPECIFICATIONS

SERVICE MANUAL

MINIDISC DECK

Model Name Using Similar Mechanism

MDS-S50

MD Mechanism Type

MDM-7A

Optical Pick-up Type

KMS-260B/260E

AEP Model

UK Model

E Model

Foreign patents licensed form Dolby Laboratories
Licensing Corporation.

— Continued on next page —

Ver 1.0  2001. 05

9-873-890-11

2001E0200-1

© 2001.5

Sony Corporation
Home Audio Company

Shinagawa Tec Service Manual Production Group

System

MiniDisc digital audio 
system

Disc

MiniDisc

Laser

Semiconductor laser 
(  = 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

Jack type:  stereo phone
Rated output:  28 mW
Load impedance:  32 ohms

ANALOG OUT

Jack type:  phono
Rated output:  2 Vrms (at 
50 kilohms)
Load impedance:  over 
10 kilohms

DIGITAL OPTICAL OUT 

Connector type:  square 
optical
Rated output:  –18 dBm
Load impedance:  660 nm 
(optical wave length)

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