Cybernet CTS 300A - Troubleshooting and Specifications; Troubleshooting Guide; Technical Specifications

Aux:
Selects
the
program
source
connected
to
the
Aux
Input
jacks.
Tuner:
Selects
the
program
source
connected
to
the
Tuner
Input jacks.
Phono:
Selects
the
output
of
the
turntable
connected
to
Phono
Input
jacks.
®@ Overload Indicator
Lights
up
when
peaks
in
the
sound
output
level
of
either
channel
is
excessively
reaching
an
overload
level,
thus
alert-
ing
distortion
or
possibility
of
damaging
the
speaker.
If
this
indicator
is
activated
you
should
decrease
the
sound
output
by
rotating
the
volume
control
counterclockwise
to
a
Posi-
tion where the indicator does not light.
® Power Output Level Indicator
The
amplifier
power
output
can
be
read
on
the
left
and
right
channel
LED
indicators,
These
indicators
give
a
direct
read-
out
of
output
power
when
the
amplifier
is
connected
to
a
pair
of
8
Ohm
speakers.
As
the
output
level
increases,
the
indication
advances
like,
0.1,
0.2,
.
25,
50.
Pushing
the
adjacent
Range
Selector
to
XO.
1
reduces
the
indicator
range
by
1/10
times.
USING A TAPE DECK
To
listen
to
a
prerecorded
tape,
simply
play
the
tape
on
the
tape
deck
and
set
the
Tape
Monitor
switch
9)
to
On
Position.
To
record
a
stereo
program,
select
the
desired
program
source
by
the
Input
Selector
10).
This
will
produce
recording
signal
at
the
Tape
Rec
jacks.
tf
you
wish
to
monitor
the
Program
information
that
is
being
recorded,
set
the
Monitor
switch
9}
to
On
position:
TROUBLE-SHOOTING GUIDE
The following guide is intended as an aid in correcting problems en-
countered when setting up the stereo system. Although the sug-
gested remedy might seem quite elementary, it may be sufficient
to make corrections without returning amplifier to your dealer.
TECHNICAL SPECIFICATIONS
Power Output
30 Watt
Total Harmonic Distortion
0.1%
Minimum continuous RMS output
power per channel, both channels driven
at 20 Hz to 20 kHz, minimum THD,
8 Ohm
le
78 \HF rated
20 Hz ~ 20 kHz
Intermodulation Distortion
0.1%
Frequency Response
20 Hz — 20 kHz
Power Bandwidth
10 — 30,000 Hz
Input Sensitivity
Phono: 2.5 mV
Others: 150 mV
Signal-to-Noise Ratio
Phono: 70 dB
Other: 90 dB
Phono Overload
120 mV
Tone Control Range
Bass: +10 dB
Treble: +10 dB
Loudness Contour
100 Hz: +7 dB
10 kHz: +3.5 dB
Filters
Rated output
60:7000 Hz = 4:1
+1.5dB 1 Watt
—3 dB
47 kOhm
47 kOhm
{HF A-shorted
100 Hz
10 kHz
Volume in --30 dB
Low: 40 Hz: -10d8 —6dB/octave
High: 10 kHz: -8dB —6 dB/octave
Crosstalk
60 dB
Tape Rec Output
130 mV
Power Requirement
1 kHz
PROBLEM
Amplifier inoperative
when power switched
on,
Meters light up but no
output any source.
Scratchy or noisy phono.
Hum phono only.
Hum, other inputs.
SUGGESTED REMEDY
Be sure power plug is properly con-
nected to powered outlet having 220V
50 Hz AC.
Check speaker cables for loose or open
connection. Check Tape Monitor switch
for proper selection.
Lift tone arm. If the noise stops, the pro-
blem probably originates in the cartridge
or associated wiring. Repair or replace.
Connect ‘separate ground Sead to the
amplifier GND terminal.
Be sure phono cable plugs are fully in-
serted in amplifier jacks. Move phono
cables around while listening to reveal
an intermittent or broken shielded lead.
Repair or replace. Connect ground wire
as noted above.
Check cables and connections. Reverse
amplifier power plug. Reverse associated
equipment’s power plug.
220V 50 Hz AC
Power Consumption
320 Watt
Dimensions
420 width — 100 height — 220 depth (mm)