Table of Contents
Advertisement
CLD-1010
Adjustment Procedure
. Find Frame
# 50,000 (outer edge) of the test disc.
. Connect Pins 20 and 22 of IC8 (PM4001) on the SRVB
:
76
assembly to open the TRKG servo loop.
assembly by pressing the play key.
tion Diagram 1 and Photo 1)
AC mode.
wave form.
. When the Lissajous wave is a bulging ellipse between
Frame #1 and Frame #500, slightly loosen the spin-
dle motor screw shown in connection diagram (2),
then adjust the core extension for the LD spindle
motor.
ing the LD motor axis centering.
8-2 Check the Lissajous wave form. Turn Angular Screw-
driver I slowly to minimize the X direction of the
Lissajous wave form, then turn Angular Screwdriver
I to obtain the same Lissajous wave form as before.
(Fig. 2)
9. Move the Pick-up assembly to near Frame # 50,000,
then adjust the grating to minimize the Lissajous wave
in the X direction.
10. Move the Pick-up assembly back to the inner edge
of the test disc between Frame # 1- #500 and check
that the X direction of the Lissajous wave form is
minimal. If not, repeat the adjustments in Steps 8-10
at either the outer edge or the inner edge of the test
disc.
. Tighten the three screws for the LD spindle motor.
Advertisement
Table of Contents
