MZ-NF810/NF810CK

Laser Power Check

Overall Adjustment Mode

Note: If result of measurement of the laser power does not satisfy the

•

Configuration of Overall Adjustment Mode

specification, either replace the OP (optical pick-up unit) or check

 

 

 

x key

whether the laser circuit block is working correctly.

 

 

 

When the result of laser power measurement does not satisfy the

 

 

Overall adjustment mode

 

 

 

(Title display)

specification even though the laser circuit block is confirmed to be

 

 

 

 

 

 

 

working correctly, replace the OP (optical pick-up unit).

 

 

 

 

• Connection

 

 

 

 

 

 

laser

 

Continuing overall adjustment

 

 

 

 

 

 

power meter

 

 

 

 

 

 

 

. key

 

 

 

 

 

T

 

 

Optical pick-up

 

 

. key on the

 

CD overall

 

 

remote commander

 

objective lens

 

 

 

 

 

 

 

 

adjusting

• Checking method

 

 

> key

 

 

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

 

 

 

 

t

 

 

laser power checking mode (item number 010).

 

> key on the

 

 

 

 

 

 

 

Remote commander LCD display

 

 

remote commander

 

MO overall

010 Laser

 

 

 

 

adjusting

 

 

 

 

 

.

 

 

VOL+ key

 

 

2. Press the T key continuously until the optical

 

DISPLAY key on the

 

 

pick-up moves to the most inward track.

 

 

Electrical

 

remote commander

 

3. Open the cover and set the laser power meter on the objective

 

 

 

 

offset

 

 

 

lens of the optical pick-up.

 

 

 

 

adjustment

4. Press the >t key, and set the laser MO read check mode (item

 

 

 

 

number 011).

 

 

 

 

 

Remote commander LCD display

 

 

[END SEARCH] key

 

 

011 Lrefpw

 

 

 

Temperature

**

 

[P MODE] key on the

 

 

 

correction

 

 

 

remote commander

 

 

 

 

 

and

5. Check that the laser power meter reading is 0.800 ± 0.10 mW.

 

 

 

Power supply

 

 

 

adjustment

>

 

 

 

 

6. Press the t key, and set the laser CD read check mode (item

 

 

 

auto item feed

number 012).

 

 

 

 

 

 

 

 

 

Remote commander LCD display

012 HrefPw **

7. Check that the laser power meter reading is 0.910 ± 0.11 mW.

8. Press the > key, and set the laser MO (X2 speed) write check

t

mode (item number 013).

Remote commander LCD display

013 WrPwLo **

9.Check that the laser power meter reading is 4.95 ± 0.59 mW.

10.Press the >t key, and set the laser MO (X4 speed) write check mode (item number 014).

Remote commander LCD display

• Overall Adjustment Mode (Title Display)

Remote commander LCD display

000 Assy**

: (Disc mark) At end of power supply adjustment: Outside lit **: Left side = MO overall adjustment information

F*: MO overall adjustment completed

1*: Manual adjustment exists (overall adj. not completed)

0*: Not adjusted

Right side = CD overall adjustment information *F: CD overall adjustment completed

*1: Manual adjustment exists (overall adj. not completed)

*0: Not adjusted

Note: Adjust the CD first, when performing adjustment.

014 WrPwHi **

11.Check that the laser power meter reading is 5.93 ± 0.71 mW.

12.Press the xCANCEL/CHG key to quit the manual mode, and activate the test mode (display check mode).

24

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Image 24
Sony MZ-NF810 service manual Laser, Lrefpw, HrefPw, WrPwLo, WrPwHi
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MZ-NF810 specifications

The Sony MZ-NF810 is a notable entry in the portable digital music player market, primarily aimed at users who seek high-quality audio playback and advanced recording capabilities. This MiniDisc player is celebrated for its compact design, making it an ideal companion for on-the-go listeners who value both audio quality and portability.

One of the standout features of the MZ-NF810 is its support for ATRAC compression technology. ATRAC, short for Adaptive Transform Acoustic Coding, provides a means to compress audio files while still maintaining impressive sound fidelity. This technology was specifically designed to optimize audio for the MiniDisc format, allowing users to enjoy longer playtimes without sacrificing sound quality. The MZ-NF810 can store up to 40 hours of music on a single battery charge, a significant advantage for audiophiles and casual listeners alike.

The device also boasts a high-resolution LCD display, providing crucial information about the currently playing track, including title, artist, and remaining battery life. Navigation is smooth and user-friendly, allowing users to access their music collections with ease. In addition, the MZ-NF810 supports USB connectivity, enabling users to transfer music and files directly from their computers. This feature eliminates the need for additional software, streamlining the process of loading music onto the device.

An important aspect of the MZ-NF810 is its recording capabilities. The player allows users to record live audio directly onto MiniDiscs, providing the freedom to capture concerts, lectures, or personal notes. The addition of various recording modes, including long-play options, enhances its utility for users who need diverse functionality.

Sound quality is further augmented with features such as Dynamic Bass Boost and a five-band equalizer, allowing users to tailor their listening experience to their preferences. The MZ-NF810 also supports various audio formats, adding to its versatility as a personal audio device.

Lastly, the MZ-NF810's sleek and lightweight design makes it not only aesthetically pleasing but also comfortable to carry, making it a practical choice for those who lead active lifestyles. In summary, the Sony MZ-NF810 MiniDisc player stands out for its audio quality, recording features, and user-friendly design, catering to music enthusiasts who demand both performance and portability in their listening experience.
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