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static measures.
- Optical adjustment (optical pickup tilt adjustment) is required after
following parts are replaced:
1. Optical pickup unit.
2. Spindle motor assembly unit.
3. Optical pickup peripherals
Note:
Optical adjustment is not necessary after replacement of other parts inside the traverse unit.
However, may require when picture deterioration is detected. Optical adjustments cannot be
applied to the inside of optical pickup. When a traverse unit is replaced, the adjustment is not
necessary.
18.1.3. Storing and Handling Test Discs
Surface precision is vital for DVD test discs. Be sure to store and handle them carefully.
- Do not place discs directly onto the workbench, etc, after use.
- Handle the discs carefully in order to maintain their flatness. Place
them into their case after use and store them vertically. Store
discs in a cool place where they are not exposed to direct sunlight
or air from air conditioned.
- Accurate adjustment will not be possible if the disc is warped
when placed on a surface made of glass, etc. If this happens, use
a new test disc to make optical adjustments.
- If adjustment is done using a warped disc, the adjustment will be
incorrect and some discs will not be playable.
18.1.4. Optical Adjustment (Optical Pickup Tilt Adjustment)
Measurement point
None (LCD display of the player is used.)
18.1.4.1. Adjustment Procedure
1. While the player is stopped and no disc is inserted, select the
DVD function. Press and hold down the
and the number button, "5" on the remote controller unit.
2. Check that "J_xxx_yyy_zz" is appearing on the display.
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Adjustment point
Tangential adjustment
screw / Tilt adjustment
screw
Measuring equipment
www.pdffactory.com
Mode
T1 (inner track) replay /
T43 (outer track) replay
Adjust that jitter value becomes minimum.
button on the player
57
Disc
DVDT-S20 [SPG]
Adjustment value
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