Accuphase C-280 - Input Selector

PARTS AND THEIR FUNCTIONS (front panel side)
2 3
[1] POWER
Depress to the IN (ша) position to
turn power on and depress again to
return to the OUT (M) position to
turn power off. The muting circuit
Operates for about 2 or 3 seconds
after power is turned on until the
circuitry stabilizes. No sound is
heard during this period. When the
muting circuit ceases to operate, the
red indicator underneath the
ACCUPHASE logo in the center of the
front panel lights. LED (Light-
Emitting Diode) indicators are also
provided to confirm the settings of
all pushbutton switches in the sub-
panel section. The C-280 uses
sophisticated electronic circuitry to
control all operations. At the heart
of this control circuitry is a logic
circuit equipped with a nickel-
cadmium battery powered backup system
so that all switch positions when
power was turned off will be retained
when power is turned on again, even
if the unit has not been used for a
long period.
The nickel-cadmium battery requires
no maintenance and Can be used for
many years. It is fully charged at
the factory before shipment and even
if the battery is somehow discharged,
it will be automatically recharged
during normal operation of the C-280.
Power Switch
[2] INPUT SELECTOR
The muting circuit operates for about
one second each time the position of
this selector is changed. The red
indicator underneath the ACCUPHASE
logo extinguishes to show when the
muting circuit is operating. Muting
is also activated when the HEAD AMP
and MC LOAD selectors are
switched. However, the head amp and
MC load selectors do not activate
muting when the input selector is in
the TUNER, LINE 1 or LINE 2 position.
DISC 1 /DISC 2
Use one of these positions to listen
to the turntable connected to the
corresponding rear panel DISC 1 or
DISC 2 jacks.
TUNER
Use this position for radio reception
through a tuner connected to the rear
panel TUNER jacks [14]. The volume
level may change when the input
Selector is changed from a DISC posi-
tion to the TUNER position even
though the volume control is
untouched. If this occurs, adjust the
output level control on the tuner to
match its output with the turntable.
9.