Sony HCD-PX5 Скачать руководство пользователя страница 44

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6. Turn the

[ENTER/YES]

knob so that the reading of the laser

power meter becomes 6.9 to 7.1 mW, press the

[ENTER/YES]

button to save it.

Note:

Do not perform the emission with 7.0 mW more than 15 seconds
continuously.

7. Then, turn the

[ENTER/YES]

knob to display “LDPWR

CHECK” (C13).

8. Press the

[ENTER/YES]

button once to display “LD 0.9mW$

”. Check that the reading of the laser power meter become

0.85 to 0.91 mW.

9. Press the

[ENTER/YES]

button once more to display “LD

7.0mW$

”. Check that the reading the laser power meter

and digital voltmeter satisfy the specified value.
Note down the digital voltmeter reading value.

Specified Value:
Laser power meter reading : 7.0 ± 0.2 mW
Digital voltmeter reading : Value on the optical pick-up label

±10%

10. Press the

[MENU/NO]

button to display “LDPWR CHECK”

(C13) and stop the laser emission.
(The

[MENU/NO]

button is effective at all times to stop the

laser emission)

11. Turn the

[ENTER/YES]

knob to display “Iop Write” (C05).

12. Press the

[ENTER/YES]

button. When the display becomes

Ref=@@@.@ (@ is an arbitrary number), press the

[ENTER/YES]

button to display “Measu=@@@.@” (@ is

an arbitrary number).

13. The numbers which can be changed will blink. Input the Iop

value noted down at step 9.
To select the number : Turn the

[ENTER/YES]

knob.

To select the digit : Press the

[CD SYNC NORM SPEED]

button

to lights up “IT” indicator, then press the

[REC MODE]

button.

14. When the

[ENTER/YES]

button is pressed, “Complete!” will

be displayed momentarily. The value will be recorded in the
non-volatile memory and the display will become “Iop Write”
(C05).

Note:

After step 4, each time the

[ENTER/YES]

button is pressed, the

display will be switched “LD 0.7mW$

”, “LD 7.5mW$

”,

and “LD Wp

”. Nothing needs to be performed here.

Adjustment Location: BD (MD) board (see page 47)

5-11. Iop NV SAVE

Write the reference values in the nonvolatile memory to perform
“Iop compare”. As this involves rewriting the reference values, do
not perform this procedure except when adjusting the laser power
during replacement of the optical pick-up and when replacing the
IC102. Otherwise the optical pick-up check may deteriorate.

Note:

Perform this function with the optical pick-up set at room
temperature.

Procedure:
1. Turn the

[ENTER/YES]

knob to display “Iop NV Save” (C06).

2. Press the

[ENTER/YES]

button and display “Iop [stop]”.

3. After the display changes to “Iop =xxsave?”, press the

[ENTER/YES]

button.

5-12. TRAVERSE ADJUSTMENT

Connection:

Procedure:
1. Connect an oscilloscope to CN105 pin

(TE) and CN105

(VC) on the BD (MD) board.

2. Load a disc (any available on the market). (Refer to Note 1)
3. Turn the

[CURSOR ]

knob to move the optical

pick-up outside the pit.

4. Turn the

[ENTER/YES]

knob to display “EF MO ADJUST”

(C07).

5. Press the

[ENTER/YES]

button to display “EFB =

MO-R”.

(Laser power READ power/Focus servo ON/tracking servo
OFF/spindle (S) servo ON)

6. Turn the

[ENTER/YES]

knob so that the waveform of the os-

cilloscope becomes the specified value.
(When the

[ENTER/YES]

knob is turned, the

of “EFB=

” changes and the waveform changes) In this adjustment,

waveform varies at intervals of approx. 2%. Adjust the wave-
form so that the specified value is satisfied as much as pos-
sible.
(Read power traverse adjustment)

Traverse Waveform

7. Press the

[ENTER/YES]

button and save the result of adjust-

ment to the non-volatile memory (“EFB =

SAVE” will be

displayed for a moment. Then “EFB =

MO-W” will be dis-

played).

Note 1:

Data will be erased during MO reading if a recorded disc is
used in this adjustment.

Note 2: