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| MECHANISM
UNIT
ADJUSTMENT
|
@
Turntable Height Adjustment
(1) Mount the spindle motor ass'y to the housing with 2
screws.
(Refer to the illustration of 'Laser Pick-up
2m/m
\
Turtable
KSS-151A Removal')
See
Shaft
(2) Set the Turntable to the shaft and insert the 2 mm
(Jig)
spacer
(jig) between the Turntable and the housing
as illustration shows.
(3) While
lightly pressing the Turntable
from the top
side, tighten screw G) with a hex. wrench,
«————
Housing
@
Spindle Motor Adjustment
(1) Disassemble Mechanism Unit in the first place, then detach the Spindle Motor Ass''y.
(2) Connect the adjustment wire connector (6P) to the measuring equipments as per illustration shows.
Spindle Motor Ass'y
Oscilloscope
Constant Voltage
Power Supply
'
Input Voltage Adjustment
Adjustment Wire Connector
Volume
Control
(3) Adjust the balance volume control VR1
and obtain
even
amplitude for vertical (A) and horizontal (B).
(Rotating the VR causes shifting (B) amplitude.)
CHI
(4)
In case using a dual mode
oscilloscope to execute
Hbwineven
adjustment,
set it to ALTER
or CHOPPER
mode
amplitude
and apply a signal to CH1
and CH2.
Then adjust
the balance
volume
control VR1
and obtain even
amplitude for both waveforms as illustration shows.
Note:
Be noted that a greater input signal causing the saturation of waveform.
18
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