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14. Error Rate Check
14-1. CD Error Rate Check
Procedure:
1. Load the check disc (TDYS-1).
2. Press the MD
or MD
.
MODE" (C36).
3. Press the [ENTER/START] button and display "CPLAY2 MID".
4. The display changes to "C =
5. Check that the C error rate is below 20.
6. Press the [MODE] button to stop playback, then press the
Z MD button and take out the check disc.
14-2. MO Error Rate Check
Procedure:
1. Load the continuously-recorded disc. (Refer to "5. Using The
Continuously Recorded Disc" (See page 33))
2. Press the MD
or MD
.
MODE" (C36).
3. Press the [ENTER/START] button to display "CPLAY2MID".
4. The display changes to "C =
5. If the C error rate is below 20, check that ADER is 00.
6. Press the [MODE] button to stop playback, then press the
Z MD button and take out the disc.
15. Focus Bias Check
Change the focus bias and check the focus tolerance amount.
Procedure:
1. Load the continuously-recorded disc. (Refer to "5. Using The
Continuously Recorded Disc" (See page 33))
2. Press the MD
or MD
.
MODE" (C36).
3. Press the [ENTER/START] button to display "CPLAY2 MID".
4. Press the [MODE] button when "C =
displayed.
5. Press the MD
or MD
.
CHECK" (C16).
6. Press the [ENTER/START] button to display "
".
The first four digits indicate the C error rate, the two digits after
"/ " indicate ADER, and the 2 digits after "c =" indicate the
focus bias value.
7. Press the [ENTER/START] button and display "
".
Check that the C error is below 220 and ADER is below 2.
8. Press the [ENTER/START] button and display "
".
Check that the C error is below 220 and ADER is below 2
9. Press the [MODE] button, then press the Z MD button and take
out the disc.
Note:
If the C error and ADER are above other than the specified 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.
button and display "CPLAY2
>
AD =
)".
>
button to display "CPLAY2
AD =
)".
button to display "CPLAY2
>
AD =
button to display "FBIAS
>
/
/
/
16. Auto Gain Control Output Level Adjustment
Be sure to perform this adjustment when the optical pick-up is
replaced.
If the adjustment results becomes "Adjust NG!", the optical pick-
up may be faulty or the servo system circuits may be abnormal.
16-1. CD Auto Gain Control Output Level Adjustment
Procedure:
1. Load the check disc (TDYS-1).
2. Press the MD
(CD)" (C11).
3. When the [ENTER/START] 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)" (C11).
4. Press the Z MD button and take out the check disc.
16-2. MO Auto Gain Control Output Level Adjustment
Procedure:
1. Load the test disc (MDW-74/GA-1).
2. Press the MD
(MO)" (C10).
3. When the [ENTER/START] 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)" (C10).
4. Press the Z MD button and take out the test disc.
)" is
c =
b =
a =
or MD
button to display "AG Set
.
>
or MD
.
>
button to display "AG Set
MDS-SE9
39
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