16.1.4 Optical Adjustment (Optical Pickup Tilt Adjustment)

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Measurement point
 		Adjustment point
 		Mode
 		Disc

Tangential adjustment screw
Tilt adjustment screw
 		T1 (inner track) replay
T43 (outer track) replay
 		DVDT-S15 or DVDT-S01
Measuring equipment
 		Adjustment value
None (LCD display of the player is used.)
 		Adjust that jitter value becomes minimum.

16.1.4.1 Adjustment Procedure

  1. While the player is stopped and no disc is inserted, select the DVD function. Press and hold down the

    button on the player and the number button, “5” on theremote controller unit.

  2. Check that “J_xxx_yyy_zz” is appearing on the display.

    For your information:

    The values, “yyy” and “zz” are not associated to jitter value.
    “yyy” indicates the frequency of error occurrence.
    “zz” indicates the focus drive value.

    Note:

    Jitter value appears on the display.

  3. Replay T01 (inner track) of the test disc.

  4. Adjust till the jitter value becomes minimum, using a tangential adjustment screw. < Fig. 16-1 >

  5. Replay T43 (outer track) of the test disc.

  6. Adjust till the jitter value becomes minimum, using a tilt adjustment screw 1. < Fig. 16-1 >

  7. Replay T43 (outer track ) of the test disc.

  8. Adjust till the jitter value becomes minimum, using a tilt adjustment screw 2.< Fig. 16-1 >

  9. Adjust till the jitter value becomes, using the tilt adjustment screws 1 and 2 alternatively.

Fig. 16-1

16.1.4.2 Tips

  1. Apply the tangential adjustment first and then the tilt adjustment.

  2. Repeat the adjustment a couple of times to find the optimum point.

  3. Complete with the tilt adjustment.

16.1.4.3 Check After Adjustment

Replay test discs or other commercial discs in order to confirm that no picture deterioration or sound skipping is detected in the inner, middle, and outer tracks. After this, fasten each adjustment screw securely using a screw lock.

16.1.4.4 Procedure for Screw Lock

  1. After adjustment, remove the top cover, clamper base, disc tray and then traverse unit.

  2. Place the traverse unit upside down, and fasten the adjustment screws with a screw lock. < Fig. 16-2 >

  3. After fastening the screws, assemble in order of the traverse unit, disc tray, clamper base, and then top cover.

Fig. 16-2


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