Sony MZ-R50 - MD Walkman MiniDisc Recorder User Manual (English)

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MICROFILM

MZ-R50

SERVICE MANUAL

PORTABLE MINIDISC RECORDER

SPECIFICATIONS

US Model

Canadian Model

AEP Model

UK Model

E Model

Australian Model

Tourist Model

Model Name Using Similar Machanism NEW

MD Machanism Type MT-MZR-50-143

Optical Pick-up Type KMS-280A

US and foreign parts licensed Dolby Laboratories Licensing

Corporation.

System

Audio playing system

MiniDisc digital audio system

Laser diode properties

Material: GaAIAs

Wavelength: λ = 780 nm

Emission duration: continuous

Laser output: less than 44.6 µW

(This output is the value measured at a

distance of 200 mm from the lens surface on

the optical pick-up block with 7 mm

aperture.)

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: 32 kHz / 44.1 kHz / 48 kHz

Coding

Adaptive Transform Acoustic Coding (ATRAC)

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

General

Power requirements

Sony AC Power Adaptor (supplied)

connected at the DC IN 6 V jack:

120 V AC, 60 Hz (US, Canadian model)

220-230 V AC, 50/60 Hz (AEP model)

230-240 V AC, 50/60 Hz (UK, Hong Kong model)

240 V AC, 50/60 Hz (Australian model)

100-240 V AC, 50/60 Hz (E, Tourist model)

Lithium ion rechargeable battery LIP-8 (supplied)

Two LR6 (size AA) alkaline batteries (not supplied)

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Sony MZ-R50 - MD Walkman MiniDisc Recorder Specifications

General

Recording Format	ATRAC (Adaptive Transform Acoustic Coding)
Playback Format	ATRAC
Recording Modes	SP, LP2, LP4
Sampling Frequency	44.1 kHz
Frequency Response	20 Hz - 20, 000 Hz
Digital Input	Optical (TOSLINK)
Type	MiniDisc Recorder
Battery Type	Rechargeable NiMH battery or AA battery
Analog Input	3.5 mm stereo mini jack
Analog Output	3.5 mm stereo mini jack