Sony HCD-C5 Service Manual page 42

HCD-C5
Procedure:
1. Connect an oscilloscope to CN105 pin 4 (TE) and CN105 pin
6 (VC) on the BD (MD) board.
2. Load a disc (any available on the market). (Refer to Note 1)
3. Press the M "R" button to move the optical pick-up outside
the pit.
4. Press the . "R" or > "R" button to display "EF MO
ADJUST" (C07).
5. Press the ENTER/YES "R" button to display "EFB =
R". (Laser power READ power/Focus servo ON/tracking servo
OFF/spindle (S) servo ON)
6. Press the . "R" or > "R" button so that the waveform of
the oscilloscope becomes the specified value.
(When the . "R" or > "R" button is pressed, the
"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.
(Read power traverse adjustment)
Traverse Waveform
VC
Specification A = B
7. Press the ENTER/YES "R" button and save the result of
adjustment to the non-volatile memory ("EFB =
will be displayed for a moment. Then "EFB =
be displayed).
8. Press the . "R" or > "R" button so that the waveform of
the oscilloscope becomes the specified value.
(When the . "R" or > "R" button is pressed, the
"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)
Traverse Waveform
VC
Specification A = B
9. Press the ENTER/YES "R" button, and save the adjustment
results in the non-volatile memory. ("EFB =
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.
42
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.
Traverse Waveform
MO-
of
12. Press the ENTER/YES "R" button, and save the adjustment
results in the non-volatile memory. ("EFB =
displayed for a moment)
Next "EF MO ADJUST" (C07) is displayed. The disc stops
rotating automatically.
13. Press the MD Z button and take out the disc.
14. Load the check disc (TDYS-1).
A
15. Press the . "R" or > "R" button to display "EF CD
ADJUST" (C08).
B
16. Press the ENTER/YES "R" button to display "EFB =
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%.
SAVE" Adjust the waveform so that the specified value is satisfied as
MO-W" will much as possible.
Traverse Waveform
of
18. Press the ENTER/YES "R" button, display "EFB =
for a moment and save the adjustment results in the non-volatile
A
memory.
Next "EF CD ADJUST" (C08) will be displayed.
B
19. Press the MD Z button and take out the check disc.
Adjustment Location: BD (MD) board (see page 44)
SAVE" will be
VC
Specification A = B
VC
Specification A = B
A
B
SAVE" will be
CD".
A
B
SAVE"