MZ-N1

SECTION 5

ELECTRICAL ADJUSTMENTS

Outline

In this set, automatic adjustment of CD and MO can be per- formed by entering the test mode.

However, before starting automatic adjustment, the memory clear, power supply adjustment, and laser power check must be performed in the manual mode.

A key having no particular description in the text, indicates a set key.

For the LCD display, the LCD on the remote commander is shown, but the contents of LCD display on the set are same.

Precautions for Adjustment

1.Adjustment must be done in the test mode only. After adjusting, release the test mode.

2.Use the following tools and measuring instruments.

• Test CD disc

TDYS-1

 

(Part No. : 4-963-646-01)

SONY MO disc available on the market

Digital voltmeter

• Laser power meter LPM-8001

(Part No. : J-2501-046-A)

• Thermometer (using the Temperature Correction)

3.Unless specified otherwise, supply DC 3V from the DC IN 3V jack (J601).

4.Switch position

HOLD switch ............................................... ON

Adjustment Sequence

1.

NV Reset (EEPROM clear)

 

Manual Mode

 

r

 

 

2.

Power Supply Manual Adjustment

 

Manual Mode

 

r

 

 

3.

Temperature Correction (item number: 015)

 

 

r

 

 

Manual Mode

4.

Laser Power Check

 

 

r

 

 

 

 

5.

Electrical Offset Adjustment

 

Caution: This adjustment must be made with

 

 

 

no disc loaded.

 

 

r

Overall Mode

6.

CD Overall Adjustment

 

 

 

r

 

 

 

7.

MO Overall Adjustment

 

 

 

 

r

Manual Mode

 

8.

RESUME Clear

 

Note: If the version of the microcomputer is 1.000 or later, “3. Tempera- ture Correction” and “2. Power Supply Manual Adjustment” can be performed continuously in reverse order with pressing the [PLAY MODE] key on the remote commander in the overall adjustment mode.

NV Reset

Caution: The shipment data will be cleared when the NV is reset. Therefore, change the NV adjusted values following the Change of NV Adjusted Values immediately after the NV was reset.

Change the NV adjustment values according to the mi- crocomputer version.

• Setting method of NV reset

1.Select the manual mode of the test mode, and set item number 021 NV Reset (see page 14).

Remote commander LCD display

021 ResNV CC

2. Press the X key.

Remote commander LCD display

021ResOK?

3.Press the X key once more.

Remote commander LCD display

021Res***

NV reset (after several seconds)

021Reset!

4.Press the x/CHG key to quit the manual mode, and return the test mode (display check mode).

Change of NV adjusted values (version 1.000)

Caution: Change the NV adjustment values according to the mi- crocomputer version.

In this set, some adjusted values were set in the manual mode at the shipment, but these will be cleared when the NV is reset. There- fore, modify the NV adjusted values through the following proce- dure immediately after the NV was reset.

1.Item numbers in which the NV adjusted values are to be modi- fied

Change ABCD gain [Hpit] initial value (item number 336) Caution: The ABCD gain [Hpit] initial value must be changed before the overall adjustment.

Change DFTC threshold value (item number 151)

Turn off sound generation speed-up (item numbers 861 to 864)

Change CLV drive voltage limiter (item numbers 865, 866)

Change x2 CLV speed gain, +6dB compared to conventional (item numbers 867, 868)

Change x2 CLV phase gain, +3dB compared to conventional (item numbers 871, 872)

Change x2/x1 switching temperature threshold value (+10° C t +5° C) (item numbers 873, 874)

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Sony service manual ResNV CC, ResOK?, 021 Res, Reset, MZ-N1 Section Electrical Adjustments

MZ-N1 specifications

The Sony MZ-N1, a revered model in the world of portable mini-disc players, holds a special place in the hearts of audiophiles and casual listeners alike. Launched as part of Sony's celebrated mini-disc lineup, it exemplifies the innovative spirit of its time with a sleek, compact design and a suite of features that appealed to music lovers.

At the heart of the MZ-N1 is its support for both standard and high-speed recording, allowing users to transfer their favorite tracks from CDs or other sources quickly and efficiently. The unit employs a unique mechanism known as the ATRAC codec, which optimizes audio compression while maintaining sound quality. This technology enables users to fit numerous tracks onto a single mini-disc, transforming how music was stored and played back.

One of its standout features is the inclusion of SonicStage software, which serves as a companion for managing music libraries. Users can edit playlists, transfer tracks, and organize their music collection seamlessly. The player supports various formats, including MP3, making it versatile in its playback capabilities. Additionally, the MZ-N1 is equipped with a backlit display, facilitating easy navigation even in low-light conditions.

Another notable characteristic of the MZ-N1 is its impressive battery life, offering hours of continuous playback on a single charge. This longevity made it an attractive option for users on the go, ensuring that their music would last through long commutes or road trips without interruption.

Furthermore, the MZ-N1 features a headphone amplifier that enhances sound quality, providing a richer audio experience. The player boasts a range of sound customizations, allowing users to adjust equalizer settings to suit their preferred listening style.

In terms of design, the MZ-N1 is compact, lightweight, and sturdy, making it highly portable. The simple, intuitive interface ensures that users can navigate through functions with ease, enhancing the overall listening experience.

Overall, the Sony MZ-N1 stands as a remarkable blend of technology and user-friendly design, showcasing the innovation of the early 2000s portable audio solutions. Its combination of sound quality, flexibility, and battery efficiency has solidified its status as a classic in the realm of mini-disc players. While modern digital music players have largely eclipsed this technology, the legacy of the MZ-N1 endures in the memories of those who experienced its audio marvels.