Sony MZ-R50 service manual Section Servicing Note

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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

Tape

Upper panel assy

Door open/close switch (S817)

Main board

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Contents NEW SpecificationsGeneral Table of ContentsDisassembly DiagramsSection Servicing Note General Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Upper Panel ASSY, Bottom Panel Assy Removal Section DisassemblyMechanism Deck MT-MZR50-143 Removal Main Board RemovalCLV Board Removal Optical PICK-UP ASSY, REC Board RemovalPower BOARD, Switch Board Removal Battery Case Assy RemovalSwitch Unit with JOG Dial Removal Test Mode Servo Mode Structure of Servo ModeVolume Cluster Display Adjusting MethodStructuer of Audio Mode Audio ModeStructure of Power Supply Mode Mecha ModeStructure of Mecha Mode Power supply ModeStructure of General Adjustment Mode General Adjustment ModeSection Adjustments Side aSide B Laser Power Check Low Reflection CD Traverse Adjustment Adjustment Location Pin No Pin name Description Section DiagramsAvss IC801 System Control CXP81960M-652R KEY3 Block Diagram Circuit Boards LocationMIC Schematic Diagram Main 1/3 Section Refer to page 61 for IC Block DiagramWaveforms Refer to page 62 for IC Block Diagrams Schematic Diagram Main 2/3 SectionRefer to page 64 for IC Block Diagrams Schematic Diagram Main 3/3 SectionIC Block Diagrams Main 1/3 Section IC501 CXA2523AR-T4 IC Block Diagrams Main 2/3 Section IC804 DS1302Z IC506 MPC18A20VMIC806 MB3800PNF IC807 AK93C45AV-L IC802 RS5RJ29261IC Block Diagram Main 3/3 Section IC303 AK4515-VQ Upper PANEL, Bottom Panel Section Section Exploded Views75 4-997-493-01 Spring LOCK,COMPRESSION 53 A-3293-759-A Switch BOARD, Complete55 A-3293-758-A Power BOARD, Complete Chassis SectionMechanism Deck Section 124 4-972-546-01 Spring Worm GEAR,COMPRESSIONMotor Spindle CLV Main Section Electrical Parts ListTantalum MainInductor 0UH ELEMENT, StorageDiode Ferrite BeadExcept FR RES,CHIPMain Power Power REC Switch Sony Corporation
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MZ-R50 specifications

The Sony MZ-R50, launched in the late 1990s, is a notable model in the MiniDisc player genre, which revolutionized how consumers listened to music. Part of Sony's first generation of MiniDisc recorders, the MZ-R50 quickly gained popularity for its sleek design and innovative features.

One of the standout features of the MZ-R50 is its compact size and lightweight construction. It weighs just 160 grams, making it one of the most portable audio devices of its time. This portability paired with a stylish aesthetic allowed users to carry their music with ease, appealing to young, active lifestyles.

The MZ-R50 utilizes MiniDisc technology, which employs a small, flat disc encased in a protective shell. This format offers superior sound quality compared to cassette tapes, allowing for digital recording and playback. Users can record audio directly onto the disc in real-time or transfer music from CDs with ease. The player supports several recording modes, including LP2 and LP4, which allow users to maximize recording time without sacrificing quality.

Another significant feature of the MZ-R50 is its impressive battery life. It can run for up to 10 hours on a single charge, enabling long listening sessions without frequent recharging. The device also includes a digital pitch control, allowing users to change the tempo of tracks without affecting the pitch, which is especially useful for musicians and DJs.

Moreover, the MZ-R50 incorporates Sony's ATRAC (Adaptive Transform Acoustic Coding) compression technology. This advanced algorithm was designed to reduce the file size of audio while maintaining high sound fidelity, ensuring that music stored on MiniDiscs sounded close to the original recording. The player is compatible with both standard and long-play MiniDiscs, providing flexibility for users who want to store more music on a single disc.

In terms of connectivity, the MZ-R50 features an optical input for high-quality digital recording from other devices, along with a headphone output and a line out option for connecting to external speakers or audio systems. Its user-friendly interface allows for easy navigation through tracks and playlists, making it accessible for users of all ages.

Overall, the Sony MZ-R50 remains a beloved piece of audio technology, reflecting a unique combination of portability, sound quality, and user-friendly features, establishing its place in the history of personal music players. Its legacy continues to inspire later generations of audio enthusiasts.