Dual CR 9065 RC Serviceanleitung Seite 3
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Tuning instructions for
CR 9065
Signal
source
Equipment
setting
Signal source
sett ng
Connection of
measuring instrumenl
Item
to
be
tuned
Tuninq,
Remarks
FM
Oscillator
108
MHz
DC
Voltmeter
toTPl
L
10'1
8.0vDc+0.2v
87.5
MHz
Check:
1.5-2
V
DO
FM
IF
FM
Signai generator
to 75 Ohm
antenna lnput
Frequency
without
transmitters
approx.
98
lvlHz
0*1
mV, Shift
+
40 kHz
Mod.1
kHz
Tune
to
approx. 98
l\,4H2
Harmonic detector,
oscilloscope to
AF
output
L 102
L 401
AF maximum
L
402
AF
and harmonic
distortion minimum
FM lF
(fine
tuning)
Antenna
to
75 Ohm
antenna input
Recelve
strong
FM
transmltter
at its
nomrnal
frequency
DC
voltmeter
toTP2-TP3
L
402
Determine DC maximum
and DC minimum
L
402
Adjust
power mean
L401
I
0V+lmVDC
Repeat tuning
Pilot
frequency
76
kHz, channel
separation
F[,4
signal generator
to
75 Ohm
antenna input
Frequency
without
transmitters
approx.
98
l\,4H2
HI.BLEND-KEY:
OFF
Tune to approx. 98
l\,4H2
Shift
+
40
kHz.
Mod.
1
kHz
1-2
mV.
without
prlot
sound
Frequency counter
toTP5
VR 501
76kHz+
50H7
with
19 kHz
Pilot
(only 1
channel
with
1
kHz
N/od,)
AF
voltmeter,
oscilloscope to
AF
output
VR
502
Maxmum
channel separation
Suppression
of
residual
pilot frequencies
(19
kHz)
FM
Signa
generator
to
75 Ohm
antenna input
Frequency
without
transmitters
approx. 98
IVHZ
Frequency without
transmitters
Tune
to
approx. 98
MHz
AF
voltmeter
oscilloscope
to
AF
output
LPFL (left channel)
Minimum
LPFR (right channel)
Search
threshold,
FM
signal
indicator
FM
S
gnal generator
to 75
Ohrn
antenna input
Frequency
without
transm tters
approx. 98 mHz
Tune to approx. 98 MHz
Shift
+
40 kHz
Mod,1
kHz,
10pV
Check on
drsplav
VR 401
"TUNED'
display rnust light
up
50
pV
VR 901
(on
the pP-board)
Eighth
signal
bar
must light up
AM
oscillätor
522
kHz
DC
Voltmeter
toTP
1
L
406
1,5
V DC
+
0.05
V
161
I
kHz
TC 403
B.5VDC+0.4V
1
53
kHz
L
407
2
VDC+0,4V
279
kHz
rc
404
5,5VDC+0.4V
{
AM
lF,
input circuit
AM Signal generator
to
Al\,4
antenna
input
'.
999 kHz
20
pY-1
mV,1
kHz
Mod.
30
7o
999 kHz
AF
voltmeter,
oscil
oscope
to
AF
output
L
4OB
I\/laxlmum
639 kHz
639 kHz
L
405
1
404
k1z
1
404 kHz
fc
402
162 kNz
162 kHz
L 404
252 kPZ
252
k1z
TC 401
AM signal
indicator
AM
signal
generator to
AIVI
antenna input
999
kHz
100
pV,
1
kHz
N/od.
30
%
999 kHz
Check on
d
splay
vB
402
Eighth
signal
bar
must light
up
