Sony HMC-MD777 Service Manual page 11

CD SECTION
CD-TEXT TEST DISC
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.
Checking Method:
1. Turn ON the power, set the disc to the disc tray with the "test disc" label facing up, 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. Turn the ≠↔± dial or press the ≠ / ± (CD) button on remote commander and select 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".
Restrictions in CD-TEXT 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".
Table 1: CD-TEXT TEST DISC TEXT Data Contents (TRACKS No. 1 to 41: Normal Characters)
TRACK
No.
1 1kHz/0dB/L&R
2 20Hz/0dB/L&R
3 40Hz/0dB/L&R
4 100Hz/0dB/L&R
5 200Hz/0dB/L&R
6 500Hz/0dB/L&R
7 1kHz/0dB/L&R
8 5kHz/0dB/L&R
9 7kHz/0dB/L&R
10 10kHz/0dB/L&R
11 16kHz/0dB/L&R
12 18kHz/0dB/L&R
13 20kHz/0dB/L&R
14 1kHz/0dB/L&R
15 1kHz/-1dB/L&R
16 1kHz/-3dB/L&R
17 1kHz/-6dB/L&R
18 1kHz/-10dB/L&R
19 1kHz/-20dB/L&R
20 1kHz/-60dB/L&R
21 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.
Displayed Contents
TRACK
No.
22 1kHz/-90dB/L&R
23 Infinity Zero w/o emphasis//L&R
24 Infinity Zero with emphasis//L&R
25 400Hz+7kHz(4:1)/0dB/L&R
26 400Hz+7kHz(4:1)/-10dB/L&R
27 19kHz+20kHz(1:1)/0dB/L&R
28 19kHz+20kHz(1:1)/-10dB/L&R
29 100Hz/0dB/L*
30 1kHz/0dB/L*
31 10kHz/0dB/L*
32 20kHz/0dB/L*
33 100Hz/0dB/R*
34 1kHz/0dB/R*
35 10kHz/0dB/R*
36 20kHz/0dB/R*
37 100Hz Squer Wave//L&R
38 1kHz Squer Wave//L&R
39 1kHz w/emphasis/-0.37dB/L&R
40 5kHz w/emphasis/-4.53dB/L&R
41 16kHz w/emphasis/-9.04dB/L&R
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Displayed Contents