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iii
.. .. -
TUNER ADJUSTMENTS
b.FM
ADJUST!
Adjusting
Step
Circuit
1
IF
2
Tuning
3
coverage
4
Tracking
IENT
BAND
SELECT
SWITCH
: FM
FM
Dummy
antenna
: 75
ohm
Connections
I
SG Frequency
Position of tuning dial
Adjustment
[CDUt
Outvut
Connect sweep
I
Connect
sweep
\
I
generator
to
I
generator
to
I
10.7
MHz
ICOO1O (H)
RO04 (H)
I
Low
I
I
T103
& TP 2 (G)
& R202 (G)
I
I
I
I
Connect
FM
SG
Connect
VTVM
to
87.0 MHz
Low
end
LO02
to TP1 (H) & TP2 (G)
speaker
terminals
109.0
MHz
High end
VCT-2
I
I
Connect
FM
SG
Connect
VTVM
to
98.0 MHz
98 MHz
VCT-1
to TP1 (H) & TP2 (G)
speaker terminals
unbalance
d
- ' VTVM
Oscilloscope
Max.
Max.
1
[
5
I
Repeat
adjustments
-,.
c. FM VCO ADJUSTMENT
BAND
SELECT
SWITCH
: FM
(1)
Input
signal
: 60 dB
22.5kHz
Non-modulation.
at 98.0 MHz
1
Connection
:
Hot to TP-1,
Ground
to TP-2
Pilot signal
: OFF
(2) Adjustment
:
VR201
.
. .
. . ,
.-
,---
FREQUENCY
:76.00 kHz t~O.15'kHz
..
.-
.
FREQUENCY
COUNTER
Sensibility:
HIGH LEVEL ( mOre than'20
MV p-p )
'-
.,
.
Adjust VR201 so that the frequency
counter
shows are reading
of 76.00 kHz ~ 0.1.5 kHz.
,-. .
. . .
.. .
.. .- .
.,, ..
+
z
RANGE: 10mV
Cu
:
270K
+
%
v
I!h
m
[ Vco)
AC
o
0s
VOLTMETER
lx
INPUT
OUTPUT
(MODEL ;VT165.
rVT1061
. .
.
...'.
.,
;
–8-
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