Sony MXD-D3 Service Manual page 36

[ AMS
8. Turn the l L
of the oscilloscope becomes the specified value.
[ AMS
(When the l L
"EFB- " changes and the waveform changes.) In this ad-
justment, waveform varies at intervals of approx. 2%. Adjust
the waveform so that the specified value is satisfied as much
as possible.
(Write power traverse adjustment)
Traverse Waveform
VC
Specification A = B
[YES]
9. Press the button, and save the adjustment results in the
non-volatile memory. ("EFB =
a moment)
10. "EFB = MO-P" will be displayed.
The optical pick-up moves to the pit area automatically and
servo is imposed.
[ AMS
11. Turn the
l L
the oscilloscope moves closer to the specified value.
In this adjustment, waveform varies at intervals of approx. 2%.
Adjust the waveform so that the specified value is satisfied as
much as possible.
Traverse Waveform
VC
Specification A = B
[YES]
12. Press the button, and save the adjustment results in the
non-volatile memory. ("EFB =
a moment.)
Next "EF MO ADJUS" is displayed. The disc stops rotating
automatically.
[ EJECT]
13. Press the button and take out the disc.
A
14. Load the check disc (MD) TDYS-1.
[ AMS
15. Turn the
l L
ADJUS" (C12).
[YES]
16. Press the button to display "EFB =
imposed automatically.
[ AMS
17. Turn the
l L
of the oscilloscope moves closer to the specified value.
In this adjustment, waveform varies at intervals of approx. 2%.
Adjust the waveform so that the specified value is satisfied as
much as possible.
Traverse Waveform
VC
Specification A = B
36
]
(MD) knob so that the waveform
]
(MD) knob is turned, the
A
B
SAV" will be displayed for
]
(MD) knob until the waveform of
A
B
SAV" will be displayed for
]
(MD) knob to display "EF CD
CD". Servo is
]
(MD) knob so that the waveform
A
B
[YES]
18. Press the
ment and save the adjustment results in the non-volatile
of memory.
Next "EF CD ADJUS" will be displayed.
[ EJECT]
19. Press the
A
12. FOCUS BIAS ADJUSTMENT
Adjusting Procedure :
1. Load the continuously-recorded disc. (Refer to "5. CREAT-
ING CONTINUOUSLY-RECORDED DISC")
[ AMS
2. Turn the l
MODE" (C29).
[YES]
3. Press the
[MENU/NO]
4. Press the
displayed.
[
5. Turn the
l
ADJUS" (C13).
[YES]
6. Press the
The first four digits indicate the C1 error rate, the two digits
after [/] indicate ADER, and the 2 digits after [a =] indicate
the focus bias value.
[ AMS
7. Turn the
l
focus bias value at which the C1 error rate becomes about 200
(Refer to Note 2).
[YES]
8. Press the button to display "
[ AMS
9. Turn the l
find the focus bias value at which the C1 error rate becomes
about 200.
[YES]
10. Press the
11. Check that the C1 error rate is below 50 and ADER is 00.
[YES]
Then press the
12. If the "( )" in "
button.
If below 20, press the
justment from step 2.
[ EJECT]
13. Press the
A
Note 1: The relation between the C1 error and focus bias is as shown in
the following figure. Find points A and B in the following figure
using the above adjustment. The focal point position C is auto-
matically calculated from points A and B.
Note 2: As the C1 error rate changes, perform the adjustment using the
average vale.
C1 error
about
200
B
button, display "EFB = SAV" for a mo-
button and take out the disc.
]
L (MD) knob to display "CPLAY
button to display "CPLAY MID".
button when "C =
AMS ]
(MD) knob to display "FBIAS
L
button to display " / a =
]
(MD) knob clockwise and find the
L
/ b =
]
L (MD) knob counterclockwise and
button to display " / c =
button.
- - ( )" is above 20, press the
[MENU/NO]
button and repeat the ad-
button and take out the disc.
C A Focus bias value
(F. BIAS)
AD = " is
".
".
".
[YES]