Panasonic SL-DT100GCS, Service Manual

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an adjustment if there is noticeable degradation in picture quality. Optical adjustments cannot be
made inside the optical pick-up. Adjustment is generally unnecessaryafter replacing the traverse
unit.
7.3. Storing and handling test discs
Surface precision is vital for DVD test discs. Be sure to store and handling them carefully.
- Do not place discs directly onto the workbench etc., after use.
- Handle discs carefully in order to maintain their flatness. Place
them into their case after use and store them vertically. Store discs
in cool place where they are not exposed to direct sunlight or air
from air conditioners.
- Accurate adjustment will not possible if the disc is warped when
placed on a surface made of glass etc.. If it is warped, use a new
test disc to make optical adjustments.
- If adjustment is performed with a warped disc, the adjustment will
be incorrect and some discs will not be playable.
7.4. Optical pick-up adjustment
7.4.1. Optical pick-up tilt adjustment
Measurement point Adjustment point Mode Disc
Tangential adjustment
screw / Tilt adjustment
screw T1 (inner periphery) play
/ T43 (outer periphery)
play DVDT-S15 or DVDT
Measurement equipment Adjustment value
None (Use the LCD indication on SA-DT100/SA-
DT300.) Adjust the jitter value to the minimum level.
7.4.1.1. Adjustment procedures
1. While pressing “STOP” button on the player, press “5” button on
the remote control unit.
2. Confirm that “J_xxx_yyy_zz” is shown on the display of the AV
control receiver (SA-DT100/SA-DT300).
For your reference:
“yyy” and “zz” shown to the right have nothing to do with jitter value. “yyy” is the error counter,
while “zz” is the focus drive value.
Note:
Jitter value appears on the display of the AV control receiver (SA-DT100/SA-DT300).
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