Sansui TU-666 - Maintenance; Power Fuse Information; Grounding Procedure; Voltage Selector Adjustment

MAINTENANCE
Local-Distant
Antenna
Switch
This
switch
is
used
to
attenuate
very
strong
signals
to
avoid
overloading.
In
strong
signal
areas,
this
switch
should
be
set
to
LOC.
In
other locations,
this
switch
should
be
set
to
DIST.
Ventilation
Adequate
air
circulation
is
absolutely
essential
for
proper
operation.
The
enclosure
should
be
open
at
the
rear,
and
should
provide
at
least
1}4
in.
of
free
space
above
the
TU-666
for
air
circulation.
Nothing
must
be
placed
directly
on
the
top
of
the
tuner,
AC Outlet
One
AC
outlet
on
the
rear
panel
is
used
to
serve
as
power
supply
source
for
a
tape
deck
or
other
components.
This
outlet
has
a
maximum
rating
of
150
VA.
100/11. 7V. OSA
220/240V 0.3A. UNSW
MAX ISOVA
Power Fuse
Should
the
tuner
fail
to
operate
when
the
POWER
switch
is
pushed
on,
the
probable
cause
is
either
a
power
stoppage
or
a
blown
fuse.
To
check,
remove
the
TU-666’s
power
cord
from
its
outlet,
turn
the
fuse
holder
on
the
rear
panel
counterclockwise,
and
remove
the
fuse.
If
it
is
blown,
replace
it
with
a
new
glass-tubed
fuse
of
the
same
capacity
(L00~
117—-0.5A,
220~240V—0.3A)
after
determining
and
eliminating
the
trouble
source
that
caused
the
fuse
to
blow.
Using
wire
or
a
fuse
of
a
different
capacity
as
a
stop-gap
measure
is
dangerous
and
should be avoided.
ep
Grounding
Connect a vinyl or enameled wire from the terminal
screw marked GND or AM-G to a copper plate
buried underground or to a water pipe. Whenever
an outdoor AM antenna is used, grounding becomes
necessary.
COPPER’ PLATE. COPPER PLATE
BURIED UNDERGROUND. BURIED UNDERGROUND.
Voltage Adjustment
To reach the voltage selector, remove the two
screws from the nameplate on the rear panel and
then remove the nameplate. The voltage selector
makes it possible to operate the TU-666 at the
correct voltage in any area. The voltage has been
pre-adjusted at the factory, but can be easily re-
adjusted as follows:
STEP I Set arrow of voltage selector plug to
required voltage: 100, 117, 220, or 240 volis.
STEP II The power fuse should also be changed
whenever the AC line voltage is changed. For 100-
117 volt operation a 0.5 ampere fuse is required.
For 220-240 volt operation the fuse should be
changed to a 0.3 ampere unit.
NOTE: The voltage selector can be used ‘o elimi-
nate the trouble caused by the considerable voltage
fluctuation. In this case, it should be set tothe peak
voltage.
2
£
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;
f
220V—