SERVICE MANUAL
CD player section
System
Compact Disc digital audio system
Laser
Semiconductor laser (
λ
= 780 nm)
Emission duration: continuous
Laser output
Less than 44.6
µ
W*
* 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.
Frequency response
5 to 20,000 Hz
±
0.5 dB
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
Laser output
Less than 44.6
µ
W*
* 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
Frequency response
5 to 20,000 Hz
±
0.5 dB
Signal-to-noise ratio
Over 96 dB during playback
Wow and flutter
Below measurable limit
Inputs
Jack type Input
impedance
Rated
input
Minimum
input
ANALOG IN
Phono
jacks
47 kilohms
500 mVrms 125 mVrms
DIGITAL
OPTICAL IN
Square
optical
connector
jack
Optical wave
length:
660 nm
—
—
Outputs
Jack type
Rated output
Load impedance
PHONES
Stereo phone
jack
10 mW
32 ohms
ANALOG
OUT
Phono jacks
2 Vrms
(at 50 kilohms)
Over 10 kilohms
COMPACT DISC MINIDISC DECK
US Model
Canadian Model
AEP Model
UK Model
E Model
SPECIFICATIONS
MXD-D4
– Continued on next page –
U.S. and foreign patents licensed form Dolby
Laboratories Licensing Corporation.
Model Name Using Similar Mechanism
MXD-D5C
MD Mechanism Type
MDM-7X2A
Optical Pick-up Name
KMS-262A/J1N
Model Name Using Similar Mechanism
NEW
CD Mechanism Type
CDM55B-21BD53
Base Unit Name
BU-21BD53
Optical Pick-up Name
OP Assy (A-MAX.2)
MD
Section
CD
Section
Photo: Black type
