5-13. ERROR RATE CHECK

5-13-1. CD Error Rate Check

Checking Procedure :

1.Load a check disc (MD) TDYS-1.

2.Press the + button and display “CPLAY MODE”.

3.Press the ^“PROGRAM” button twice and display “CPLAY MID”.

4.The display changes to “C1 = AD = ”.

5.Check that the C1 error rate is below 20.

6. Press the

p“PROGRAM”

button, stop playback, press the

6

 

 

button, and remove the test disc.

 

 

(EJECT)

 

5-13-2. MO Error Rate Check

Checking Procedure :

1.Load a test disc (MDW-74/AU-1).

2.Press the + button and display “CPLAY MODE”.

3.Press the ^“PROGRAM” button and display “CPLAY MID”.

4.The display changes to “C = AD = ”.

5.If the C1 error rate is below 50, check that ADER is 00.

6. Press the

p“PROGRAM”

button, stop playback, press the

6

 

 

button, and remove the test disc.

 

 

(EJECT)

 

5-14. FOCUS BIAS CHECK

Change the focus bias and check the focus tolerance amount.

Checking Procedure :

1.Load a test disc (MDW-74/AU-1).

2.Press the + button and display “CPLAY MODE”.

3.Press the ^“PROGRAM” button twice and display “CPLAY MID”.

4.

Press the

 

p“PROGRAM”

button when “C1 =

AD =

”

 

is displayed.

 

 

5.

Press the

+

button and display “FBIAS CHECK”.

 

6.

Press the

 

^“PROGRAM”

button and display “

/

c =

 

”.

 

 

 

The first four digits indicate the C1 error rate, the two digits

 

after “/” indicate ADER, and the 2 digits after “c =” indicate the

 

focus bias value.

 

 

 

Check that the C1 error is below 50 and ADER is below 2.

 

7.

Press the

 

 

 

 

 

 

button and display “

/

b =

 

 

 

^“PROGRAM”

 

”.

 

 

 

Check that the C1 error is below 220 and ADER is below 2.

8.

Press the

 

 

 

^“PROGRAM”

button and display “

/

a =

 

”.

 

 

 

Check that the C1 error is below 220 and ADER is below 2

 

9.

Press the

 

 

p“PROGRAM”

button, next press the

6 (EJECT)

 

button, and remove the continuously recorded disc.

 

 

Note 1 : If the C1 error and ADER are above other than the speci- fied value at points a (step 8. in the above) or b (step 7. in the above), the focus bias adjustment may not have been carried out properly. Adjust perform the beginning again.

5-15. AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT

Be sure to perform this adjustment when the pickup is replaced. If the adjustment results becomes “Adjust NG!”, the pickup may be faulty or the servo system circuits may be abnormal.

5-15-1. CD Auto Gain Control Output Level Adjustment

Adjusting Procedure :

1.Insert the check disc (MD) TDYS-1.

2.Press the + button to display “AG Set (CD)”.

3.When the ^“PROGRAM” button is pressed, the adjustment will be performed automatically.

“Complete!!” will then be displayed momentarily when the value is recorded in the non-volatile memory, after which the display changes to “AG Set (CD)”.

4.Press the 6(EJECT) button to remove the disc.

5-15-2. MO Auto Gain Control Output Level Adjustment

Adjusting Procedure :

1.Insert the reference disc (MDW-74/AU-1) for recording.

2.Press the + button to display “AG Set (MO)”.

3.When the ^“PROGRAM” button is pressed, the adjustment will be performed automatically.

“Complete!!” will then be displayed momentarily when the value is recorded in the non-volatile memory, after which the display changes to “AG Set (MO)”.

4.Press the 6(EJECT) button to remove the disc.

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Sony MDS-PC2 service manual Error Rate Check, Focus Bias Check, Auto Gain Control Output Level Adjustment
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MDS-PC2 specifications

The Sony MDS-PC2 is a compact yet powerful digital MiniDisc recorder that was designed to bring studio-quality recording capabilities to the consumer level. Launched in the late 1990s, this device was particularly notable for its versatility and advanced audio technologies, making it a favorite among audiophiles and home studio enthusiasts alike.

One of the standout features of the MDS-PC2 is its ability to record and playback audio with exceptional clarity. It utilizes the MiniDisc format, which employs a magneto-optical technology that allows for higher-quality recordings compared to traditional cassette formats. The MDS-PC2 supports various audio bit rates, including standard Stereo at 292 kbps and long play modes, which double the recording time at the cost of some audio fidelity. This flexibility allows users to tailor their recording settings to their specific needs.

The MDS-PC2 features an intuitive interface, including an easy-to-read LCD display that shows vital information about the track, such as its name, length, and remaining recording time. The device is equipped with multiple input options, including optical and analog connections, facilitating seamless integration into any audio setup. The built-in digital signal processor (DSP) enhances the recording quality by minimizing background noise and distortion, providing a clean and crisp listening experience.

Another notable characteristic is the MDS-PC2's editing capabilities. Users can easily create custom playlists, erase tracks, and rearrange audio sequences with a few simple commands. The unit also supports fade-in and fade-out functionalities, allowing for smooth transitions between tracks. The flexibility in editing makes it a potent tool for podcasters, musicians, and anyone looking to produce high-quality audio content.

Portability is another key aspect of the Sony MDS-PC2. Its lightweight design and durable build make it easy to transport, catering to users who are frequently on the move. Battery operation options provide additional convenience for those who wish to use the recorder away from a power source.

In summary, the Sony MDS-PC2 combines innovative technology with user-friendly features, making it an excellent choice for anyone seeking an efficient and high-quality MiniDisc recorder. Its capability to produce superior audio recordings, coupled with its adaptability and portability, has solidified its place as an essential tool for audio recording and playback in various settings.
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