Sony MZ-R30 Service Manual

SERVICE MANUAL
US and foreign patents licensed from Dolby
Laboratories Licensing Corporation.
MZ-R30
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Tourist Model
Model Name Using Similar Mechanism NEW
MT-MZR30-124
KMS-250A/J2N
MD Mechanism Type
Optical Pick-up Type
SPECIFICATIONS
System Coding
Audio playing system Adaptive TRansform Acoustic Coding
MiniDisc digital audio system (ATRAC)
Laser diode properties
Material: GaAlAs
Wavelength: 1 = 780 nm
Emission duration: continuous
Laser output less than 44.6 pW
(This output is the value measured at a
distance of 200 mm from the lens surface on
the optical pick-up block.)
Recording and playback time
Maximum 74 minutes (MDW-74, stereo
recording)
Maximum 148 minutes MDW-74, monaural
recording)
Revolutions
400 rpm to 900 rpm (CLV)
Error correction
Advanced Cross Interleave Reed Solomon
Code (ACIRC)
Sampling frequency
44.1 kHz
Sampling rate converter
Input: 33 kHz/44.1 kHz/48 kHz
Modulation system
EFM (Eight to Fourteen Modulation)
Number of channels
2 stereo channels
1 monaural channel
Frequency response
20 to 20,000 Hz + 3 dB
Wow and Flutter
Below measurable limit
Inputs
Microphone: stereo mini-jack, 0.22 - 0.78 mV
Line in: stereo mini-jack, 69 - 194 mV
Optical (Digital) in: optical (digital) mini-jack
Outputs
Headphones: stereo mini-jack, maximum
output level 5 mW+ 5 mW, load impedance
16 ohm
Line out: stereo mini-jack, 194 mV, load
impedance 10 kilohm
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PORTABLE MINIDISC RECORDER
SONY.