29
+
–
Oscilloscope
(DC range)
V: 0.1 V/div
H: 10 ms/div
BD board
CN105 pin
4
(TE)
CN105 pin
6
(VC)
5-12.
TRAVERSE ADJUSTMENT
Connection:
Adjusting Procedure:
1.
Connect an oscilloscope to CN105 pin
4
(TE) and CN105
pin
6
(VC) on the BD board.
2.
Load a recordable test disc (MDW-74/GA-1).
3.
Press the
M
button to move the optical pick-up outside the
pit.
4.
Turn the
l
AMS
L
knob to display “EF MO ADJUS”
(C07).
5.
Press the YES button to display “EFB =
MO-R”.
6.
Turn the
l
AMS
L
knob so that the waveform of the
oscilloscope becomes the specified value.
(When the
l
AMS
L
knob is turned, the
of “EFB=
MO-R” changes and the waveform changes.) 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
7.
Press the YES button and save the result of adjustment to the
non-volatile memory (“EFB =
SAV” will be displayed for a
moment. Then “EFB =
MO-W” will be displayed).
8.
Turn the
l
AMS
L
knob so that the waveform of the
oscilloscope becomes the specified value.
(When the
l
AMS
L
knob is turned, the
of “EFB-
MO-W” changes and the waveform changes.) 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
9.
Press the YES button, and save the adjustment results in the
non-volatile memory. (“EFB =
SAV” will be displayed for
a moment)
10. “EFB =
MO-P” will be displayed.
The optical pick-up moves to the pit area automatically and
servo is imposed.
11. Turn the
l
AMS
L
knob until the waveform 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
12. Press the YES button, and save the adjustment results in the
non-volatile memory. (“EFB =
SAV” will be displayed for
a moment.)
Next “EF MO ADJUS” is displayed. The disc stops rotating
automatically.
13. Press the EJECT
A
button and take out the disc.
14. Load the check disc (MD) TDYS-1.
15. Turn the
l
AMS
L
knob to display “EF CD ADJUS”
(C08).
16. Press the YES button to display “EFB =
CD”. Servo is
imposed automatically.
17. Turn the
l
AMS
L
knob so that the waveform 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
18. Press the YES button, display “EFB =
SAV” for a moment
and save the adjustment results in the non-volatile memory.
Next “EF CD ADJUS” will be displayed.
19. Press the EJECT
A
button and take out the test disc TDYS-1.
A
B
VC
Specification A = B
A
B
VC
Specification A = B
A
B
VC
Specification A = B
A
B
VC
Specification A = B