SERVICE MANUAL
U.S. and foreign patents licensed form Dolby
Laboratories Licensing Corporation.
CD player section
System
Compact Disc digital audio system
Laser
Semiconductor laser (λ = 780 nm)
Emission duration: continuous
Less than 44.6 µW*
Laser output
* 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.
5 to 20,000 Hz ±0.5 dB
Frequency response
Signal-to-noise ratio
More than 98 dB
Wow and flutter
Below measurable limit
MD deck section
System
MiniDisc digital audio system
Disc
MiniDisc
Laser
Semiconductor laser (λ = 780 nm)
Emission duration: continuous
Less than 44.6 µW*
Laser output
* 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 properties Material: GaAlAs
Revolutions (CLV)
800 rpm to 1,800 rpm
Error correction
Advanced Cross Interleave Reed
Solomon Code (ACIRC)
Sampling frequency
44.1 kHz
Coding
Adaptive TRansform Acoustic Coding
(ATRAC)/ATRAC 3
Modulation system
EFM (Eight-to-Fourteen Modulation)
Number of channels
2 stereo channels
MXD-D4
Photo: Black type
Model Name Using Similar Mechanism
MD
MD Mechanism Type
Section
Optical Pick-up Name
Model Name Using Similar Mechanism
CD
CD Mechanism Type
Section
Base Unit Name
Optical Pick-up Name
SPECIFICATIONS
Frequency response
Signal-to-noise ratio
Wow and flutter
Inputs
Jack type Input
Phono
ANALOG IN
jacks
Square
DIGITAL
optical
OPTICAL IN
connector
jack
Outputs
Jack type
Stereo phone
PHONES
jack
Phono jacks
ANALOG
OUT
COMPACT DISC MINIDISC DECK
US Model
Canadian Model
AEP Model
UK Model
E Model
MXD-D5C
MDM-7X2A
KMS-262A/J1N
NEW
CDM55B-21BD53
BU-21BD53
OP Assy (A-MAX.2)
5 to 20,000 Hz ±0.5 dB
Over 96 dB during playback
Below measurable limit
Rated
Minimum
impedance
input
input
47 kilohms
500 mVrms 125 mVrms
Optical wave
length:
—
—
660 nm
Rated output
Load impedance
10 mW
32 ohms
2 Vrms
Over 10 kilohms
(at 50 kilohms)
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