Am Tracking Adjustment - Pioneer H-2000 Service Manual

5.4
(1)
!r)
(3)
AM TRACKING
ADJUSTMENT
Set the
variable capacitor
at
maximum
capacity
position and apply
a
5
l5kHz
signal
from the
signal generator
(30%
modulation at 400H2). Adjust the
oscil-
lator
coil
L6 for
maximum tuner output,
Set
the
variable capacitor
at
minimum
capacitance
and apply a
signal
of
1,660kH2. Adjust the trimmer
capacitor
CT5
for
maximum tuner output.
Apply. a
signal
of
600kHz and tune
the
variable capacitor for maximum reception;
peak
the output by
adjustment of
the bar
antenna inductance L5.
Apply
a signal
of
1,400kH2 and tune
the
variable capacitor
for maximum reception;
peak the
output
by
adjustment
of
the
trimmer
capacitor CT4,
(4)
(s)
(6)
Repeat
the procedure of
items
( 1)
to
establish
the
bandwidth of
I,660kHz"
Repeat the procedure of
for
optimum tracking
at
items
(a)
and
(5)
both
ends.
and
(2)
515
to
BAR
NTEN NA
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BAR ANTAENNA
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S.G. Frequency
Variabl e
Capacitor Position
Adiu strnent Point
Circuit
Section
51skHz
Maximum
Capacity L6
OSC
600k
H
z
Tu
ned Position
Bar
Antenna
(L5)
ANT
1
400kHz
Tu
ned Position
CT4
ANT
1660kHz Minimum
Capacity
CT5
OSC
F
ig.
18
11