MAINTENANCE
■
External care
●
Periodically wipe the cabinet with a soft cloth and dilute soap
solution, then wipe with a dry cloth.
●
Do not use chemically treated cleaning cloths or other chem-
icals.
SPECIFICATIONS
As a part of our policy for continuous improvement, SHARP reserves the right to make design and specification changes
for product improvement without prior notice. The performance specification figures indicated are nominal values of
production units. There may be some deviations from these values in individual units.
●
General
Type:
MiniDisc recorder
Signal readout:
Non-contact, 3-beam semi-con-
ductor laser pick-up
Audio channels:
Stereo 2 channels/monaural
(long-play mode) 1 channel
Frequency response:
4 – 20,000 Hz (+0/-1 dB)
Rotation speed:
400 – 900 rpm CLV, Approx.
Error correction:
ACIRC (Advanced Cross Inter-
leave Reed-Solomon Code)
Coding:
ATRAC (Adaptive TRansformed
Acoustic Coding)
Recording method:
Magnetic modulation overwrite
method
Type:
MD/CD Deck
Power source:
AC 120 V, 60 Hz
Power consumption:
20 W
Dimensions:
Width: 16-15/16" (430 mm)
Height: 4-11/16" (118 mm)
Depth: 11-15/16" (302 mm)
Weight:
11.3 lbs. (5.1 kg)
Input jacks
Jack name
Jack shape
Input
impedance
Reference
input level
Minimum
input level
LINE IN
Pin jack
Over
22 kohms
680 mVrms
170 mVrms
OPTICAL
IN (Optical)
Square
optical
connector
COAXIAL
(Coaxial)
Pin jack
75 ohms
500 mVp-p
MIC (Micro-
phone)
Stereo
jack
600 ohms
6 mVrms
Output jacks
Jack name
Jack shape
Output
level
Load
impedance
PHONES
(Headphones)
1/4" (6.3 mm) stereo
jack
15 mW
32 ohms
LINE OUT
Pin jack
2 Vrms
50 kohms
OPTICAL
OUT (Optical)
Square optical connector
●
Timer/clock
Type:
Digital clock with date function
Timer:
ON/OFF, once a day
●
MiniDisc recorder section
A/D, D/A converter:
1 bit
Sampling frequency:
44.1 kHz
Wow and flutter:
Unmeasurable (less than
±
0.001% W. peak).
Signal/noise ratio:
100 dB (1 kHz)
Dynamic range:
90 dB (1 kHz)
T.H.D. at 1 kHz:
0.008%
●
Compact disc player
Type:
3-disc multi-play compact disc
player
Signal readout:
Non-contact, 3-beam semiconduc-
tor laser pickup
Rotation speed:
200 - 500 rpm CLV, Approx.
Error correction:
CIRC (Cross Interleave Reed-Sol-
omon Code)
Quantization:
16-bit linear
Frequency response:
4 - 20,000 Hz (+0/–1 dB)
D/A converter:
1 bit
Signal/noise ratio:
100 dB (1 kHz)
Dynamic range:
90 dB (1 kHz)
Wow and flutter:
Unmeasurable
(less than 0.001% W. peak)
■
Internal care
●
In order to ensure proper operation of the CD player, preven-
tative maintenance (cleaning of the Laser Pick-up lens) should
be performed periodically in order to keep the lens dust-free.
Lens cleaners are commercially available. Contact your local
CD software dealer for options.
MD-R3
44
Summary of Contents for MD-R3
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