Read Sony CMT-PX333 / HCD-PX333 Service Manual online
45
HCD-PX333
8. Press the
.
“R”
or
>
“R”
button so that the waveform of
the oscilloscope becomes the specified value.
(When the
(When the
.
“R”
or
>
“R”
button is pressed, the
of
“EFB=
” 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.
(Write power traverse adjustment)
the waveform so that the specified value is satisfied as much as
possible.
(Write power traverse adjustment)
Traverse Waveform
9. Press the
ENTER/YES “R”
button, and save the adjustment
results in the non-volatile memory. (“EFB =
SAVE” 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.
servo is imposed.
11. Press the
.
“R”
or
>
“R”
button 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.
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
ENTER/YES “R”
button, and save the adjustment
results in the non-volatile memory. (“EFB =
SAVE” will be
displayed for a moment)
Next “EF MO ADJUST” (C07) is displayed. The disc stops
rotating automatically.
Next “EF MO ADJUST” (C07) is displayed. The disc stops
rotating automatically.
13. Press the Z (MD) button and take out the disc.
14. Load the check disc (TDYS-1).
15. Press the
14. Load the check disc (TDYS-1).
15. Press the
.
“R”
or
>
“R”
button to display “EF CD
ADJUST” (C08).
16. Press the
ENTER/YES “R”
button to display “EFB =
CD”.
Servo is imposed automatically.
17. Press the
.
“R”
or
>
“R”
button 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.
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
ENTER/YES “R”
button, display “EFB =
SAVE”
for a moment and save the adjustment results in the non-volatile
memory.
Next “EF CD ADJUST” (C08) will be displayed.
memory.
Next “EF CD ADJUST” (C08) will be displayed.
19. Press the Z (MD) button and take out the check disc.
Adjustment Location: BD (MD) board (see page 47)
13.FOCUS BIAS ADJUSTMENT
Procedure:
1. Load the continuously-recorded disc. (Refer to “5. USING
1. Load the continuously-recorded disc. (Refer to “5. USING
THE CONTINUOUSLY RECORDED DISC” (See page 40))
2. Press the
.
“R”
or
>
“R”
button to display “CPLAY2
MODE” (C36).
3. Press the
ENTER/YES “R”
button to display “CPLAY2MID”.
4. Press the
MENU/NO “R”
button when “C =
AD =
)” is
displayed.
5. Press the
.
“R”
or
>
“R”
button to display “FBIAS
ADJUST” (C09).
6. Press the
ENTER/YES “R”
button to display “
/
a =
”.
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.
after “/ ” indicate ADER, and the 2 digits after “a =” indicate
the focus bias value.
7. Press the
>
“R”
button and find the focus bias value at which
the C1 error rate becomes about 200 (refer to Note 2).
8. Press the
ENTER/YES “R”
button to display “
/
b =
”.
9. Press the
.
“R”
button and find the focus bias value at which
the C1 error rate becomes about 200.
10. Press the
ENTER/YES “R”
button to display “
/
c =
”.
11. Check that the C1 error rate is below 20 and ADER is 00. Then
press the
ENTER/YES “R”
button.
12. If the “(
)” in “
-
-
(
)” is above 20, press the
ENTER/
YES “R”
button.
If below 20, press the
MENU/NO “R”
button and repeat the
adjustment from step 2.
13. Press thet Z (MD) button and take out the disc.
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.
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.
average vale.
A
B
VC
Specification A = B
A
B
VC
Specification A = B
A
B
VC
Specification A = B
C1 error
about
200
200
B
C
A
Focus bias value
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