SERVICE MANUAL
Ver. 1.4 2006.12
US and foreign patents licensed form Dolby Laboratories
Licensing Corporation.
System
MiniDisc digital audio system
Disc
MiniDisc
Laser
Semiconductor laser
(λ = 780 nm)
Emission duration: continuous
MAX 44.6 µW
Laser output
1)
This output is the value measured at a distance of 200 mm from
the objective lens surface on theOptical 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
5 to 20,000 Hz ±0.3 dB
Frequency response
Signal-to-noise ratio
Over 98 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 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%
Sony Corporation
9-874-014-05
Home Audio Division
2006L02-1
© 2006.12
Published by Sony Techno Create Corporation
MDS-JE780
SPECIFICATIONS
1
)
Model Name Using Similar Mechanism
MD Mechanism Type
Optical Pick-up Type
Outputs
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)
General
Power requirements
European model:
230 V AC, 50/60 Hz
Other model:
110 – 120/220 – 240 V AC, 50/60 Hz
Adjustable with voltage selector
Power consumption
15 W (0.4 W in standby mode)
Dimensions (approx.)
430 x 95 x 285 mm (w/h/d) incl.
projecting parts and controls
Mass (approx.)
3.1 kg
Supplied accessories
Audio connecting cords (2)
Optical cable (1)
OpenMG Jukebox CD-ROM (1)
Operating instructions for OpenMG Jukebox (1)
Remote commander (remote) (1)
R6 (size-AA) batteries (2)
USB cable (1)
Instruction manual
Design and specifications are subject to change without notice.
AEP Model
UK Model
E Model
MDS-JE480
MDM-7S1A
KMS-260B/260E
MINIDISC DECK