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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
"R" or
.
>
MODE" (C34).
3. Press the ENTER/YES "R" button twice and display "CPLAY1
MID".
4. The display changes to "C =
5. Check that the C error rate is below 20.
6. Press the MENU/NO "R" 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
"R" or
.
>
MODE" (C34).
3. Press the ENTER/YES "R" button to display "CPLAY1MID".
4. The display changes to "C =
5. If the C error rate is below 20, check that ADER is 00.
6. Press the MENU/NO "R" 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
"R" or
.
>
MODE" (C34).
3. Press the ENTER/YES "R" button twice to display "CPLAY1
MID".
4. Press the MENU/NO "R" button when "C =
is displayed.
5. Press the
.
"R" or
>
CHECK" (C16).
6. Press the ENTER/YES "R" 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/YES "R" button and display "
".
Check that the C error is below 220 and ADER is below 2.
8. Press the ENTER/YES "R" button and display "
".
Check that the C error is below 220 and ADER is below 2
9. Press the MENU/NO "R" 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.
"R" button and display "CPLAY1
AD =_ _)".
"R" button to display "CPLAY1
AD =
)".
"R" button to display "CPLAY1
AD =
"R" button to display "FBIAS
/
c =
/
/
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
. m
Set (CD)" (C11).
3. When the ENTER/YES "R" 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
.
"R" or
(MO)" (C10).
3. When the ENTER/YES "R" 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.
)"
".
b =
a =
HCD-M10
"R" or
"R" button to display "AG
M >
>
"R" button to display "AG Set
39
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