CDP-CX255, CDP-CX70ES, CDP-CX88ES - Sony Audio Service Manual (repair manual). Page 4

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This unit is able to display the test data (character information) written in the CD on its fluorescent indicator tube.
The CD-TEXT TEST DISC (TGCS-313:4-989-366-01) is used for checking the display.
To check, perform the following procedure.

1. Turn ON the power, set the disc on the disc table with the side labeled as ‘’test disc” as the right side, close the front cover, and chuck the

disc.

2. Press the  

·  button and play back the disc.

3. The following will be displayed on the fluorescent indicator tube.

Display : 1kHz/0 dB/ L&R

4. Press the  

≠  and  ±  buttons to switch the track. The text data of each track will be displayed.

For details of the displayed contents for each track, refer to “Table 1 : CD-TEXT TEST DISC TEXT Data Contents” and “Table 2 : CD-
TEXT TEST DISC Recorded Contents and Display”.

In this unit, some special characters will not be displayed properly. These will be displayed as a space or a character resembling it. For details,
refer to “Table 2 : CD-TEXT DISC Recorded Contents and Display”.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

TRACK

No.

Displayed Contents

1kHz/0dB/L&R

20Hz/0dB/L&R

40Hz/0dB/L&R

100Hz/0dB/L&R

200Hz/0dB/L&R

500Hz/0dB/L&R

1kHz/0dB/L&R

5kHz/0dB/L&R

7kHz/0dB/L&R

10kHz/0dB/L&R

16kHz/0dB/L&R

18kHz/0dB/L&R

20kHz/0dB/L&R

1kHz/0dB/L&R

1kHz/-1dB/L&R

1kHz/-3dB/L&R

1kHz/-6dB/L&R

1kHz/-10dB/L&R

1kHz/-20dB/L&R

1kHz/-60dB/L&R

1kHz/-80dB/L&R

NOTE : The contents of Track No. 1 to 41 are the same as those of the current TEST DISC-their titles are displayed.

1kHz/-90dB/L&R

Infinity Zero w/o emphasis//L&R

Infinity Zero with emphasis//L&R

400Hz+7kHz(4:1)/0dB/L&R

400Hz+7kHz(4:1)/-10dB/L&R

19kHz+20kHz(1:1)/0dB/L&R

19kHz+20kHz(1:1)/-10dB/L&R

100Hz/0dB/L*

1kHz/0dB/L*

10kHz/0dB/L*

20kHz/0dB/L*

100Hz/0dB/R*

1kHz/0dB/R*

10kHz/0dB/R*

20kHz/0dB/R*

100Hz  Squer Wave//L&R

1kHz  Squer Wave//L&R

1kHz  w/emphasis/-0.37dB/L&R

5kHz  w/emphasis/-4.53dB/L&R

16kHz  w/emphasis/-9.04dB/L&R

TRACK

No.

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

Displayed Contents