Sony MDS-JE640 specifications Specifications, Inputs, Outputs, New, MDM-7A

MDS-JE640

SERVICE MANUAL

Canadian Model

AEP Model

UK Model

E Model

Photo: SILVER

US and foreign patents licensed form Dolby Laboratories Licensing Corporation.

Model Name Using Similar Mechanism	NEW
MD Mechanism Type	MDM-7A
Optical Pick-up Type	KMS-260B/J1N

SPECIFICATIONS

System

Disc

Laser

Laser output

Laser diode Revolutions (CLV) Error correction

Sampling frequency Coding

Modulation system

Number of channels Frequency response Signal-to-noiseratio Wow and flutter

MiniDisc digital audio system

MiniDisc

Semiconductor laser (λ = 780 nm) Emission duration: continuous

MAX 44.6 ∝W1)

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.

Material: GaAlAs

400 rpm to 900 rpm

ACIRC (Advanced Cross Interleave Reed Solomon Code)

44.1 kHz

ATRAC (Adaptive TRansform Acoustic Coding)/ATRAC 3

EFM (Eight-to-Fourteen

Modulation)

2 stereo channels

5 to 20,000 Hz ±0.3 dB

Over 98 dB during play

Below measurable limit

Inputs
ANALOG IN	Jack type: phono
	Impedance: 47 kΩ
	Rated input: 500 mVrms
	Minimum input: 125 mVrms
DIGITAL IN	Connector type: square optical
	Impedance: 660 nm (optical wave
	length)
DIGITAL OPTICAL IN	Connector type: square optical
(AEP, UK, CIS models)	Impedance: 660 nm (optical wave
	length)
DIGITAL COAXIAL IN	Jack type: phono
(AEP, UK, CIS models)	Impedance: 75 Ω
	Rated input: 0.5 Vp-p, ±20 %
Outputs
PHONES (MDS-JE640	Jack type: stereo phone
only)	Rated output: 28 mW
	Load impedance: 32 Ω
ANALOG OUT	Jack type: phono
	Rated output: 2 Vrms (at 50
	kΩ)
	Load impedance: over 10 kΩ
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MINIDISC DECK