Dual CV 1450 Serviceanleitung Seite 7

Test- and adjustment
(
L ine vo ltage 22O V
,
50 Hzl
instructions for CV 1450
I
nput connection
Signal source
adjustment
Unit
adjustment
I
nd
icator connection
Test- and
ad.justment
posit ion
Measure value
(nominal
value)
Femark
s
Current consumption
ldle
Vc
3
Amperemeter
at
primary
branch
power transformer
Power
fuse
approx.
140 mA
TUNER+
1
k1z:
15 5
V
(60w)
to
4
S)/channel
Fullload
Vc 1,8a2,
fc2
approx.
1.3
A
Operating voltages
ldle
Vc
3 DC-Vo
ltmeter
at
resp. DC-vo ltage
test
poi
nt
I
nput
section
t8.2V
Phono-M icro- and
control
amplif
ier
ti5v
L ED
display
+
15V112
Speaker
protect;on circuit
12V
Power
amplifier
t36V
TUNE R*
l
kHz;
15.5
V
(60
W)
to
4,f)/channel
Fullload
Vc 1,8a2,
fc2
>128 v
Gain adjustment
TUNE
R
*
1
kHz; 150 mV
to
i
nput
Yc
1,8a2,
Tc2
Osci
lloscope and A
F-
Vo ltmeter through
4
f,)
load resistance
to
loudspeaker
outpul
R 1205
r.K.
R 1205'r"K.
Adjust
to
15.5
V (60 W)
at
loudspeaker
output
Output
voltages
TUNER'
i
kHz;170
mV
to
input
Yc
1,8a2
fc2
A F-Vo
ltmeter
Output SPEAKER
at 4
,f)
>15V
Head
phone
output
PHONES
at
150
f,
4,5
-
5 V
D
lN-output TAPE
ar
10
ks)
2-4mY
Cinch
outputs 130
-
160 mV
POWER
INDICATOR
TUN
E
R*
Vc
1,8a2
tct R
1650
Adjust
untilthe
60 W LED's
of both channels jusL illumi-
nate.
Noise voltages
(without
filterl
TUNER
with
47
k[-2
parallel
22O
pF termi-
nated
Vc
1
,8a2,
Tc2
O
sci
lloscope
and AF-
Voltmeter
through
4 S}
load
resistance
to
loudspeaker out-
put
Loudspeaker output
tu1ax.
3.5 mV
Vc3
Max.
1
mV
PHONO with
2,2
kQ
termi-
nated
.
Vc 1,8a2,
Ic2
Max.
40
mV
Max.
1 mV
Vc3
Thermostatic
cut
off
TUNER-
1
k1z;
15.5
V
(60
w)
to 4 f,)/channel
Yc1,Ba2,
Tc2
Oscilloscope and
AF
Voltmeter
through
4 f,)
load resistance
to
loudspeaker
outpul
lover
ventilation.
After
35
to
15 mi
nutes
the thermostat
ic
cut-ofi
;hould break the line vollaqe.
furn
back srqnal.
After
further
J
to
15 minutes
the
unrt should
'eadv
aoain
for
ooeration.
ldle current
(Power amplifier)
Adjustment not
necessary
*
Both
channels
driven
Key
to
abbreviations us€d
to controls
and adiustment settings
Vc =
Volume
control
VOLUME
Ba
=
Balance
control BALANCE
Tc
-
Tone control BASS, TREBLE
1
= Controlfully
clockwise
2 =
Control in
mechanical centre
position
3 =
Control
closed {fully counterclockwise)