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LD-V4300D
8. TILT SENSOR INCLINATION ADJUSTMENT
•
Purpose:
To set the electrical offset
of
the tilt
servo
to 0 V by adjusting
the
inclination of
the tilt sensor.
• Symptoms when incorrectly
adjuued:
Crosstalk
Measurement equipment
&Jigs
•
Oscilloscope
• Test
disc: GGV1003
• Philips
@
screwdriver
•Monitor
TV
Adjusting procedure
Measurement
equipment
connecting points
• Osdlloscope;
In
FTSB
assembly
CHI:
Between TPI-8
(TILT
ERROR)
and
GN
Note:
This adjustment should
be
performsd
with
the
unit placed horizontally.
This adjustment should
be
perform
ed in the
range of F #
(!rams numbers} 2{X)() -
10000 so
the
sensor output is not influenced
by the mir-
ror
surface at
the
inside
of
rhe
disc and exter-
nal
light at the
edges of
the d;sc.
l .
Play the
test
disc
and
search for
a
position
around
frame
#
5000.
2.
Connect
the
oscilloscope to
TPl
-8 in
lhe
FTSB
assem-
bly, and observe
the DC
voltage
or
the
tilt
error signaJ.
3. Insert the small Philips
(±)
screwdriver
with
a
long
shaft
Adjustment diagram
)
Player condttlon
;,.
Normal
mode:
•
Play mode
•
Tilt
servo
OFF
Adjusting points
• Tilt
sensor
inclination
adjustment
screw
in
the
pick-up
assembly
from the rear
panel
of
the
player, and adjust the tilt
sensor
inclination
adjustment
screw
so that the
DC
voltage
of
the
tilt
error
signal becomes
OV
±20m
V.
(Fig.
8-1)
At this
time,
the
above adjustment
will be easy
to
per-
form when
the pjckup
is
locked
by
pressing the
Muhi
Reverse key
on
the
remote control.
4.
Set
~TILT SERVO ON"" by
remote controller.
S.
Search
for
frame
#
115 and check
that
crosstalk at the
left and
right
sides of t he
TV
screen
is minimum
and
symmetrical.
NOTE:
Displaying
"10"
for
tift
error
is
not a fatal error. -TILT
ERROR 10~
will be
displayed
on
the
monitor when
TP1-8
is
OV.
F'ig.
8-
1
TIit
stav
inclination adJu$tment
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