Panasonic DVD-LS85EB, Service Manual

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11.4.1.2. Adjustment
1. Play back the disc (DVDT-S01/S15) and make sure the RF signal is outputted.
2. Play back the areas within a radius of 40 ± 1 mm of the disc (middle circumference).
3. Turn the adjustment screw C to minimize the jitter value in the radial direction.
(*Once turn the screw to the full position and then back off. You should finish tightening in the tightening direction.)
4. Turn the adjustment screw A to minimize the jitter value in the tangential direction.
(*Once turn the screw to the full position and then back off. You should finish tightening in the tightening direction.)
5. DISC height measurement (Measure the middle of the deflection of the disc and motor surface.)
*If the measured height is out of range, adjust to the specified value using the adjustment screws A, B, and C (by the same
angle).
11.4.1.3. Checking after adjustment
Play back the test disc and ordinary discs to make sure that there is not any deterioration of image quality or missing of sound at
the inner, middle, and outer circumferences.
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DVD-LS90PP / DVD-LS93P