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HITACHI
FT-4000/4000L
Connection
Setting
Adjust for
AnschlufS
Setzen
Einstellen fiir
Connexion
Montage
Réglage pour
Sequence
_—
:
;
T
;
Reihenfolge
Input
Output
Tuning
Adjust
Indication
Séquence
Eingang
Ausgang
Abstimmung
Einstellen
Anzeige
Entrée
Sortie
Indicateur d'accord
Réglage
Indication
400 Hz, 100 %
OUTPUT
Mod.
Output
400 Hz, 100%
Ausgang
Modulation
550 mV+1 dB
Sortie
400 Hz, 100%
Mod.
ANT. Terminal
Antennen-
Anschluf
Borne d'antenne
ANT
S
:
Freq.
76 kHz+100 Hz
60 dB input
Frequenz
ee dB Eingang
76 kHz+100 Hz
Entrée 60 dB
Fréquence
+
Non-modulated
76 kHz+100 Hz
Nicht moduliert
Non modulé
y
U.S.A. &
Canada R ch
1,000 Hz
46% Mod.
Other countries
R ch 1,000 Hz
26.7% Mod.
Pilot 8% Mod.
OUTPUT
Leh out
Stereo
USA u. Kanada
MIN.
Separation
R-Kanal 1 000Hz,
Caution 4
Stereo-Trennung fie Mod., andere| |
L-Kanal Ausg.
Séparation
Lander R-Kanal
MIN.
stéréo
1000 Hz, 26,7%
Vorsicht 4
Mod., Pilot 8%
Sortie can.
G
Mod.
MIN
:
E-U et Canada
nti
Can. D 1000 Hz
pesnnyys
46% Mod.
Autres pays
Can. D 1000 Hz,
26,7% Mod.
Pilote 8% Mod.
CAUTION
1. Short-circuit the OSC stage by earthing the live side of the variable capacitor in that stage.
Adjust the core of T201 so that the gain will be max. In this case, reduce the level of the input signal of signal generator
so that the wave from will be the same as the one shown in the figure.
2. Short-circuit the OSC stage as described in Caution 1.
Adjust the primary core (lower) of T202 so that the output is like the S curve shown in illustration of this table with A
and B symmetrical with respect to C.
Adjust the secondary core (upper) so that the straight line of the S curve can be achieved.
At the time of adjustment in Caution 1 and 2, center of the marker will sometimes not correspond to that of the
wave form because of the ceramic filters used.
3. As the result of the adjustment step 6, the best point of adjustment from step 5 will be shifted a bit. Repeat the adjust-
ment of step 5 and 6 until the deterioration becomes minimum and the pointer of tuning meter is in its center.
4. Optimize R322 so that the leak level of the L ch signal is equal to that of the R ch signal.
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