Sony MXD-D5C Service Manual page 44

14. ERROR RATE CHECK
14-1. CD Error Rate Check
Checking Procedure:
1. Load the check disc (MD) TDYS-1.
[ AMS
2. Turn the l L
MODE" (C36).
[YES]
3. Press the button twice and display "CPLAY2MID".
4. The display changes to "C =
5. Check that the C1 error rate is below 20.
[MENU/NO]
6. Press the button to stop playback, then press the
[ EJECT]
button and take out the check disc.
A
14-2. MO Error Rate Check
Checking Procedure:
1. Load the continuously-recorded disc. (Refer to "5. USING
THE CONTINUOUSLY RECORDED DISC")
[ AMS
2. Turn the l L
MODE" (C36).
[YES]
3. Press the button to display "CPLAY2MID".
4. The display changes to "C1 =
5. If the C1 error rate is below 20, check that ADER is 00.
[MENU/NO]
6. Press the button to stop playback, then press the
[ EJECT]
A button and take out the test disc.
15. FOCUS BIAS CHECK
Change the focus bias and check the focus tolerance amount.
Checking Procedure:
1. Load the continuously-recorded disc. (Refer to "5. USING
THE CONTINUOUSLY RECORDED DISC")
[ AMS
2. Turn the l L
MODE" (C36).
[YES]
3. Press the button twice to display "CPLAY2MID".
[MENU/NO]
4. Press the button when "C1 =
displayed.
[ AMS
5. Turn the
l L
CHECK" (C16).
[YES]
6. Press the button to display "
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 20 and ADER is below 2.
[YES]
7. Press the button and display "
Check that the C1 error is about 100 and ADER is below 2.
[YES]
8. Press the button and display "
Check that the C1 error is about 100 and ADER is below 2
[MENU/NO]
9. Press the button, then press the
ton and take out the disc.
Note:
If the C1 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 prop-
erly. Adjust perform the beginning again.
44
]
(MD) knob and display "CPLAY2
AD = ".
]
(MD) knob to display "CPLAY2
AD = ".
]
(MD) knob to display "CPLAY2
AD =
]
(MD) knob to display "FBIAS
/ c = ".
/ b = ".
/ a = ".
[ EJECT]
A
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
Adjusting Procedure:
1. Load the check disc (MD) TDYS-1.
[
2. Turn the
l
(CD)" (C11).
[YES]
3. When the
formed 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).
[ EJECT]
4. Press the
A
16-2. MO Auto Gain Control Output Level Adjustment
Adjusting Procedure:
1. Load the test disc (MDW-74/GA-1).
[
2. Turn the l
(MO)" (C10).
[YES]
3. When the
formed 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).
[ EJECT]
4. Press the
A
" is
but-
AMS ]
(MD) knob to display "AG Set
L
button is pressed, the adjustment will be per-
button and take out the check disc.
AMS ]
L (MD) knob to display "AG Set
button is pressed, the adjustment will be per-
button and take out the test disc.