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7.4
ADJUSTMENTS OF PICKUP ASSY AND FTSB ASSY
•
NOTES FOR
CENTERING A
DJ
USTMENT
Usc
the low
-
pass
filte~
below
in
the
coar5e
centering
adjustmen
t
3. and
fine
centering
adjusllTleni 7. whe
n
the SIN
of
the
wavdonn.
is
heard
to observe.
1
--------
1 '
l<.n
:
TRI(
ERR
®e---+-';;;'I---"i--~()
Xc!.
I
I
O.Ol.-FI
!....-
______
I
0
10kn
,-------,
m
,
,~
o
I
,
I
®
1
I
I
o
Vel>
m
A
I
I
I
J;O
.
0027"F,
'-
______
1
•
RACK
ASSEMBLY DURING
CENTER ING
ADJUST-
MENT
Tvrn
•• ble
'$sembly
Me
cl>.nllm
I
toppe'
~
$1
ider
~
"
...
f~
The
S-IN
position (without
hilting
the mechanism
stopper)
of
Ihe rack
assembly
during
centering adjustment is
ind
i-
cated
below.
ADJUSTMENT TABLE
Adjustment
n .......
Adju stment polnt
....
"'""9
equlJllMll
tWid
~
g
.
HI()ff,et
FTSB
assembly
1
TVmonilOr
Checlt and Ad;"$Imeru
VA610
FTSB assembly
2
Ht servo Gain ad;"stment
-
VR620
·
Osci lloscope
Tilt base
• STD -90t
or STD
-
902
3
Coarse cenlering
Centering
adjustmenl
•
MI
X
resistor
, ......
-
2 m",
Ihe"
assembly
M
....... ement point
Player
condition
• Power
ON
Till indication on Tesl
mode
· Teslmoda
~-
• Oisc not installed
•
Power ON
-
•
Teslmoda
· Disc
nol installed
·
Tesl mode
TAK
servo OFF
CNB07
Till
servo ON
X
:
<aPin
(TAK EAA)
·
Innermost track 01 STo
-
901
~
ad;"Slmenl
' O K
Y :
<D+(%:pin (TAK SUM)
STD -
902
Which
dose
not come
=.w
:1b--
in rontact
with tha
mechanical
.-
·
Test mode
TAK
servo
OFF
FCS
balance ad;"stmenl
FTSB
assembly
•
0sci1
1oSC<lp8
CN807
4
Tilt
servo
ON
(I
)
TAKEARMAX
VA605
•
STD
-901
Of
STD
-
902
<!pin
(TAK
ERAl
• Inner
Irack
01 SID
-
901
Of
SID
902
•
Tasl
mode
TAK
Servo
ON
FC
S
balance
adjustmenl
FTSB
as&ElrTlbly
•
Oscilloscope
CNSII
5
Till servo ON
(2)
AF
MAX
VA61
1
•
STo-901
or STo
-
902
tJPin(RF)
• Inner
track
01
SID
-
901
or
SID
-
902
· Teslmode
TRK
Servo
ON
,
Tangel'llial
areelion
angle
Tilt base
•
Osci
lloscope
CNSI'
Tilt servo ON
ad;"slrnenl
TAN
ad;"slmenl
screw
•
STo
-
901
or STD
-
902
tJPin (AF)
• Inner Irack 01 STo -901
or
STD
-
902
. .
2.
•
.... the
adjustmenT
ranli/8 01 both !he TAN
and
oontaring
adiust·
men!
.erews
it
only:t9O" from
the
center, do not
tum
the
s.erews
beyond
this
range.
"'~~'
J~l
TILT base seclion
AdJustmllnt procedura
Check
il
lhe
~
II
in(licabOn on
the Tesl mode saeen is al
T
~
6
1O
T
~
8.
11
the h
lt
indiea~on
Is
not
al
T
~
6
10 T
~
8.
adjust VR610
un~1
the
~It
indica~on
reaches
T
~
6 10 T
~
8.
Cheek the 001 marlling
on
the
~II
5811501" and turn VA620
below.
Rod
"
lI,II"n
fI.JIly
clock
wise
Noo
"'middle po$ition
Bw.
··turn
lul
y
counter
dock
wise
,
Move the
slider unlil
il does not come In con
tact
with
the mechanical
stopper .11
the
slider
position
ina cation
5
-
IN.
2
0bM,.",.
TAK
EA
A
(Xch) arid
TAK
SU
M
(Yell)
althe
X -
Y mode
during
TAK
Servo
OfF.
3.
Turn
the cenlering ad;"slmenl
screw
until the lissajous' figure is
hOtiZOI1tal.
1.
0bser.'II
TAK ERR at CHt 01 the
osciH
osoope during
TAK
Servo
OFF.
2.
Ad;"sl VA60S
un
tillhe amplitude of
the
wa~form
readies its
maximum.
1.
TAK S8NO
Is
ON arid observe
AF
al
CHI
oltha
oscilloscope.
2.
Adjust
VASI
I
ul'lril
lhe amplirude
01 the waveform reaches
its
maximum
al'ld
Ihe erwetope
is
very
dear.
1.
Observe RF
at
CHI
01
the
oscittos(;ope
during TAK
Servo
ON.
2.
Adjus' the
TAN
adjus,mel'll
screw until
the amplitude 01 the
wa
velorm
reaches
its maximum
and !he envelope
is
very
clear
CLC-AIDD
,
.
:IOOmW<lN
,
SOmV",N
~-
CN""
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A
ffi :
'''''' ,
o
VRGOI
o
VR60
4
VR60'3
0
VRGI!
0
00
V"&O,
o
VRi;OS
VR60G
IC803
VRG20
0
o
o
VRG10
CN8Di
FTSB
ASS'Y Adjustment diagram
Waveform
lin
d
conn
ection dlag.""
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Sensor stay
of
~
It
sensor
~
e
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110
"
•
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.......
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78
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