Dual CR 5950 RC Serviceanleitung Seite 3
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Andere Handbücher für CR 5950 RC:
- Serviceanleitung (19 Seiten) ,
- Serviceanleitung (19 Seiten)
Tuning Instructions
for CR 5950
Signal source
Equipment
setting
FM oscillator
87.5 MHz
108 MHz
FM IF, input circuit
FM signal generator to
Mono key: ON
75-ohm
Frequency with-
antenna input
out transmitters
approx. 98 MHz
90 MHz
105 MHz
FM IF (fine tuning)
Antenna
to
Receive strong
75-ohm
FM transmitter
antenna input
at its nominal
frequency
Transition between monaural, stereo and muting; signal indication, channel separation
FM signal generator to
Frequency with-
75-ohm
out transmitters
antenna input
approx. 98 MHz
Mono key: OFF
Suppression of residual pilot frequencies (19 kHz)
FM signal generator to
Frequency with-
75-ohm
out transmitters
antenna input
approx. 98 MHz
Mono key: OFF
LPF (114 kHz)
AF generator
OFF
AM oscillator
522 kHz
1611 kHz
AM IF, input circuit
AM signal generator to
AM antenna input
999 kHz
594 kHz
1404 kHz
AF closed-circuit
current
Volume:
Signal source setting
O- 1 mV
Shift ± 40 kHz
Mod.
1 kHz
Tune to approx.
98 MHz
Tune to app. 90 MHz
Tune to app. 105 MHz
Tune to approx. 98 MHz
Shift ± 40 kHz
Mod. I kHz
19-kHz pilot ON
1 mV
Tune to approx.
98 MHz
1-2mV,
19-kHz pilot ON
114 kHz
1 vpp to R 172
10 PV- I mV, 1 kHz,
Mod.
999 kHz
594 kHz
1404 kHz
min.
Connection
of
Item to be tuned
measuring instrument
DC voltmeter
to:
L 106
E2-2
CT 104
Repeat tuning
Harmonic
detector
L 107
oscilloscope to L/R
speaker output via
L 161 A
load resistors
L 161 B
L 102, L 103, L 104
c 101, c 102, c 103
Repeat input-circuit tuning
DC voltmeter
to:
L 161B
L 161 A
Repeat tuning
AF voltmeter,
oscilloscope to
VR 161
UR speaker output
via load resistors
VR 162
VR 201
AF voltmeter,
oscilloscope to UR
L 201 (left channel)
speaker output
via load resistors
L 202 (right channel)
Oscilloscope
L 164
toc
181
DC voltmeter
to
L 152
c 152
AF voltmeter,
oscilloscope
to UR
L 163
speaker output via
load resistors
L 151
CT 151
DC voltmeter
to:
VR 801
VR 802
3
Tuning, Remarks
1.7 VDC
±O.IV
9.0 V DC ±O.IV
AF maximum
AF and harmonic
distortion
minimum
AF maximum
at
mn.
nose
Determine
DC maximum
and DC minimum
Adjust power mean
o
mV DC
Set monaural, stereo
and muting transition
Third signal LED must light up
Maximum channel separation
Minimum
Minimum
1.4 V DC ± 0.1 V
10 V DC
±0.1
V
Maximum
After 5 min, 4 mV
4 mV
