MECHANICAL MEASUREMENTS AND SETTINGS
Height adjustment of the turntable (see Fig.)
6. MEASUREMENTS AND SETTINGS
This setting requires the device to be in normal operating mode.
Service supports 4822 395 30202 can be used for this
Play from CD 4822 397 30086 track 1 or (CD without defects).
Connect a DC voltmeter across resistor 3240 on the SERVO PCB.
(FOCUS MOTOR).
Loosen lock nut A. Use bolt B (Allen key) to adjust the turntable
height so that the voltage across 3240 is 0V ± 100mV. Retighten
lock nut A. When tightening, make sure that the voltage setting does
not change.
Checking the angle setting
Open the frame.
Place the mirror 4822 395 90205 on the focus unit and the glass
plate 4822 395 90204 (with pusher 4822 526 10241) on the
turntable.
Place the device under a light source, under which there is a straight
line (e.g. fluorescent with grille).
Place the RAFOC arm in the middle position. Turn the device so that
the RAFOC arm is parallel to the line under the light source (see
Fig.).
Look in the direction and in line with the line at its reflection on the
glass plate and mirror.
These lines should be no more than 4mm apart: Position the device
so that a line runs across the center of the mirror.
When the other line remains within the surface of the mirror, the
distance s is 4mm.
Turn the CD mechanism 90° from the previous position. The RAFOC
arm must remain in the middle position (see Fig.).
Repeat the previous measurement.
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