digital voltmeter

Adjustment method of Vrec PWM Duty (L) (item number: 766)

Remote commander LCD display

766 RECpwL **

**: Adjusted value

1.Connect a digital voltmeter to the AP611 (VREC) on the MAIN board, and adjust [VOLUME +] key (voltage up) or [VOLUME

+ 0.025

--]key (voltage down) so that the voltage becomes 1.08 – 0.005 V.

digital voltmeter

MAIN board

AP611 (VREC)

AP912 (GND)

2. Press the X key to write the adjusted value.

Adjustment and Connection Location: MAIN board (see page 24)

Adjustment method of Vrec PWM Duty (H) (item number: 767)

Remote commander LCD display

767 RECpwH **

**: Adjusted value

1.Connect a digital voltmeter to the AP611 (VREC) on the MAIN board, and adjust [VOLUME +] key (voltage up) or [VOLUME --]key (voltage down) so that the voltage becomes 1.65 to 1.70 V.

digital voltmeter

MAIN board

AP611 (VREC)

AP912 (GND)

2. Press the X key to write the adjusted value.

Adjustment and Connection Location: MAIN board (see page 24)

Adjustment method of Vd PWM Duty (item number: 768)

Remote commander LCD display

768 VD_PWM **

**: Adjusted value

1.Connect a digital voltmeter to the AP911 (VD) on the MAIN

board, and adjust [VOLUME +] key (voltage up) or [VOLUME --]key (voltage down) so that the voltage becomes 1.31 ± 0.010

V.

MAIN board

AP911 (VD)

AP912 (GND)

2. Press the X key to write the adjusted value.

Adjustment and Connection Location: MAIN board (see page 24)

MZ-N1

Temperature Correction

• Adjustment method of temperature correction

1.Select the manual mode of test mode, and set the item number 015 (see page 14).

Remote commander LCD display

015 SetTmp **

**: Adjusted value

2.Measure the ambient temperature.

3.Adjust with [VOLUME +], [VOLUME --]key so that the ad- justed value (hexadecimal value) becomes the ambient tem-

perature.

(Initial value: 19h = 25 ° C, Adjusting range: 80h to 7fh (–128 ° C to +127 ° C)

4.Press the X key to write the adjusted value.

Laser Power Check

Connection :

laser power meter

Optical pick-up objective lens

digital voltmeter

MAIN board

TP (+)

TP (–)

Checking Method :

1.Select the manual mode of test mode (see page 14), and set the laser power adjusting mode (item number 010).

Remote commander LCD display

010Laser

2.Press the . key continuously until the optical pick-up moves to the most inward track.

3.Open the cover and set the laser power meter on the objective lens of the optical pick-up.

4.Press the N key, and set the laser MO read adjustment mode (item number 011).

Remote commander LCD display

011 LrefPw **

5.Check that the laser power meter reading is 0.81 ± 0.08 mW.

6.Check that the voltage both ends (TP (+) and TP (–)) of resis- tor R521 at this time is below 44 mV.

7.Press the N key, and set the laser CD read adjustment mode (item number 012).

Remote commander LCD display

012 HrefPw **

8.Check that the laser power meter reading is 0.97 ± 0.10 mW.

9.Check that the voltage both ends (TP (+) and TP (–)) of resis- tor R521 at this time is below 44 mV.

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Image 23
Sony MZ-N1 service manual RECpwL, RECpwH, Vdpwm, SetTmp, Laser, LrefPw, HrefPw

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.