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CX-W300
Tracking Servo Adjustment (Figures 27 and 28)
aTRAHO OMITOOH83Jaüi
~1
Step
connect
Setting
Adjust
Remarks
Gain Se tting
See
Figure 27
Play the regular disc
Y E D S - 7
V R 5 0 3
I lllll
r
- O V
500mV P - P
L
Obtain the tracking
drive
signal of about
500 mVp-p.
Change the disc
to P H I L I P S
Test Disc 5A
and
play where
the black dot of 600 /um is,
and
confirm
no
skipping.
If
there
is any
skipping, adjust V R 5 0 3 to reduce the tracking
servo gain till
no
skipping
occurs. Toreduce the gain,
turn V R 5 0 3 counter clockwise.
P L L (Phase Locked Loop) Adjustment
See
Figure 28
Slide
the power
switch
on (without disc)
V R 5 0 4
counter reading to be 4.32 MHz. + 3 0
kHz
- 1 0
kHz
Discon neet T P 510 and
T P 511.
(See Figure 28)
Play the regular disc
Check
counter reading 4.3218 MHz
± 0 . 0 0 5
MHz.
- 2 1 -
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