Sony MZ-R50 - Manual

Sony MZ-R50

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Table of Contents:

  • Page 2 – ELECTRICAL PARTS LIST; Flexible Circuit Board Repairing; • Keep the temperature of the soldering iron around 270°C; Notes on chip component replacement; TABLE OF CONTENTS; For customers in Europe
  • Page 3 – Upper panel assy
  • Page 20 – Follow the disassembly procedure in the numerical order given.
  • Page 25 – Segment section; Ver
  • Page 26 – • Structure of Servo Mode
  • Page 27 – • Cluster Display; AT error rate
  • Page 28 – • Structuer of Audio Mode
  • Page 30 – • Structure of General Adjustment Mode; OK; Assy MODE; CD mode NG; CD mode NG; Adjustment
  • Page 31 – Connection point and adjustment location : POWER board; SECTION 5; -1. Precautions for Laser Diode Emission Check; Laser tap; Optical Pickup flexible board; Digital voltmeter
  • Page 33 – -7. Low Reflection CD Traverse Adjustment
  • Page 34 – Adjustment Location :
  • Page 35 – SECTION 6
  • Page 40 – Refer to page 61 for IC Block Diagram.; μμ; WAVEFORMS; sec
  • Page 41 – Refer to page 62 for IC Block Diagrams.
  • Page 42 – Refer to page 64 for IC Block Diagrams.
  • Page 47 – Description
  • Page 50 – MAIN
  • Page 54 – POWER
  • Page 55 – or dotted line with mark
  • Page 56 – Sony Corporation; Personal A&V Products Company
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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

µ

W

(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)

– Continued on page 2 –

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Summary

Page 2 - ELECTRICAL PARTS LIST; Flexible Circuit Board Repairing; • Keep the temperature of the soldering iron around 270°C; Notes on chip component replacement; TABLE OF CONTENTS; For customers in Europe

– 2 – Specifications ........................................................................... 1 1. SERVICING NOTE ....................................................... 3 2. GENERAL Location and Function of Controls .................................... 4 3. DISASSEMBLY 3-1. Upper Panel Assy, Bot...

Page 3 - Upper panel assy

– 3 – SECTION 1 SERVICING NOTE When repairing this device with the power on, if you remove the main board or open the upper panel assembly, this device stops working.In this case, you can work without the device stopping by fastening the hook of the Open/Close detection switch (S817) with tape Upper...

Page 20 - Follow the disassembly procedure in the numerical order given.

– 20 – SECTION 3 DISASSEMBLY Note : Follow the disassembly procedure in the numerical order given. 3-1. UPPER PANEL ASSY, BOTTOM PANEL ASSY REMOVAL r The equipment can be removed using the following procedure. Set Upper panel assy, Bottom panel assy Main board Mechanism deck SWITCH UNIT (with JOG DI...

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