Sony MZ-R50 service manual Structure of General Adjustment Mode

Page 30

[General Adjustment Mode]

Set the test mode, press the +key, and set the general adjust- ment mode.

To set other modes, cut off the power once and power on again.

When the general adjustment mode is set, the LCD display will be as follows.

4000

Assy MODE

• Structure of General Adjustment Mode

General

adjustment mode

Ókey (CD, MO discrimination)

CD automatic

Ó key

adjustment

OK

 

 

p key

p key

NG

 

MO automatic

Ó key

adjustment

OK

 

 

p key

p key

NG

 

• MO Automatic Adjustment

No.

Mode No.

Adjustment

 

 

 

1

032

MO playback EF balance adjustment

 

 

 

2

033

MO playback ABCD level adjustment

 

 

 

3

034

MO recording EF balance adjustment

 

 

 

4

035

MO recording ABCD level adjustment

 

 

 

5

037

MO focus gain adjustment

 

 

 

6

038

MO tracking gain adjustment

 

 

 

7

061

32 cluster full REC

 

 

 

8

062

REC shock

 

 

 

9

063

32 cluster PLAY

 

 

 

10

039

MO focus bias adjustment

 

 

 

11

042

Low reflection CD EF balance adjustment

 

 

 

12

043

Low reflection CD ABCD level adjustment

 

 

 

13

045

Laser low reflection CD read adjustment

 

 

 

14

046

Low reflection CD tracking gain adjustment

 

 

 

* Display during MO automatic adjustment

37

Mode No.

 

during adjustment

MO RUN

4.If the automatic adjustment results are OK, the following will be displayed.

Reset

Adjusting Method :

1.Set the test mode, press the = key to set the general adjust- ment mode.

2.Load the CD test disc (TDYS-1) or SONY MO disc available on the market.

3.When the Ókey is pressed, the disc is determined if CD or MO, the automatic adjustment modes are set, and adjustments are per- formed automatically in the following order.

• CD Automatic Adjustment

No.

Mode No.

Adjustment

 

 

 

1

052

CD EF balance adjustment

 

 

 

2

053

CD ABCD level adjustment

 

 

 

3

055

CD focus gain adjustment

 

 

 

4

056

CD tracking gain adjustment

 

 

 

5

057

CD focus bias adjustment

 

 

 

* Display during CD automatic adjustment

51 Mode No.

during adjustment

CD RUN

00

CD mode OK

5.If the automatic adjustment results are NG, the following will be displayed.

NG mode No. (Last 2 digits)

557F Adjustment results

CD mode NG

*When the mode number is 039, 057 and the focus bias value is NG, the following will be displayed

Mode No. (Last 2 digits)

5730 Focus bias value

CD mode NG

77 : focus bias

Displayed while the P key is

pressed

 

7701 Error code

(01 to 04)

CD mode NG

*When the mode number is 039, 061 and the AT error rate is NG, the following will be displayed.

Mode No. (Last 2 digits)

3903 AT error value

CD mode NG

*When NG, set the servo mode and perform the automatic adjust- ment of the NG item. (Refer to “Servo Mode”).

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Contents Specifications NEWDiagrams Table of ContentsDisassembly GeneralSection Servicing Note General Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Section Disassembly Upper Panel ASSY, Bottom Panel Assy RemovalMain Board Removal Mechanism Deck MT-MZR50-143 RemovalOptical PICK-UP ASSY, REC Board Removal CLV Board RemovalBattery Case Assy Removal Power BOARD, Switch Board RemovalSwitch Unit with JOG Dial Removal Test Mode Servo Mode Structure of Servo ModeVolume Adjusting Method Cluster DisplayAudio Mode Structuer of Audio ModePower supply Mode Mecha ModeStructure of Mecha Mode Structure of Power Supply ModeGeneral Adjustment Mode Structure of General Adjustment ModeSection Adjustments Side aSide B Laser Power Check Low Reflection CD Traverse Adjustment Adjustment Location Section Diagrams Pin No Pin name DescriptionAvss 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 Schematic Diagram Main 2/3 Section Refer to page 62 for IC Block DiagramsSchematic Diagram Main 3/3 Section Refer to page 64 for IC Block DiagramsIC Block Diagrams Main 1/3 Section IC501 CXA2523AR-T4 IC Block Diagrams Main 2/3 Section IC804 DS1302Z IC506 MPC18A20VMIC806 MB3800PNF IC802 RS5RJ29261 IC807 AK93C45AV-LIC Block Diagram Main 3/3 Section IC303 AK4515-VQ Section Exploded Views Upper PANEL, Bottom Panel SectionChassis Section 53 A-3293-759-A Switch BOARD, Complete55 A-3293-758-A Power BOARD, Complete 75 4-997-493-01 Spring LOCK,COMPRESSIONMechanism Deck Section 124 4-972-546-01 Spring Worm GEAR,COMPRESSIONMotor Spindle Section Electrical Parts List CLV MainMain TantalumFerrite Bead ELEMENT, StorageDiode Inductor 0UHRES,CHIP Except FRMain 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.