Pioneer SX-770 Manuel d'installation, d'utilisation et d'entretien - Page 12
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ALIGN
M
ENT
ALIGNMENT OF
FM SECTION
Disconnect
output
terminal
of
front
end
(3, 4)
from
(3)
terminal
of
Tuner
Unit
Position
of
Switch:
Selector
FM
MONO
AFC....................
OFF
Mutin9.................OFF
Volume Control
Setting: Fully
counterclockwise
**"/
I
nput
Dial
Setting
Output
Equipment
Connections
Alignment
Equipment
Connections
Freq
uency
Level
Adjust
Remarks
Sweep
Generator
10.7MHz
40dB
Oscilloscope
T1
i2
T3
Adlust
for
maximum
sen-
sitivity and
symmetrical
characteristics.
3
't2
2
Sweep
Generator
10.7MHz
80dB
Oscilloscope
Chpnk svmmcirv af
rharae
-
3
12
teristic
curve
3
Sweep
Generator
1O.7MHz
40dB
Oscilloscope
-14
Adjust
the primary core
of
T4 so that
straight
por-
tion of
"S"
curve
will
be-
come
the
steepest
and
ad-
lust
the
secondary
core
so
that
the
center of
"S"
curve
will
coincide
with
the cent-
er
of
the
marker.
2
12
4
Connect
output terminal
of
front
end (3,
4)
to
(3) terminal of Tuner
Unit
5
Signal Generator
90MHz
20dB
(40OHz
3oo/ol
90MHz
VTVM
Oscilloscooe
L3
Adjust
for
maximum
de-
f
lection.
FM antenna
terminal
16
6
Signal Generator
106MHz
20dB
(400H2
3oo/ol
106MHz
VTVM
Oscilloscope
cT3
Adjust
for
maximum
de-
f
lection.
FM antenna
terminal
16
7
Repeat STEPS
5
and
6
several
times.
I
Signal Generator
90MHz
20dB
(400H2
30%l
90MHz
VTVM
Oscilloscoon
T1,T2
L1,
L2
Adjust
for
f
lection.
maximum
de-
FM antenna
terminal
16
9
Signal Generator
106MHz
20dB
(400H2
30%)
106MHz
VTVM
_Oscilloscope
_
16
cr1
cr2
Adjust
for
maximum
de-
f
lection.
FM antenna
terminal
10
Repeat STEPS
8
and 9
several
times