Nikko NA-540 - Operation

ENGLISH
INTRODUCTION
Thank
you
for
selecting
the
NIKKO
NA-540
Integrated
Amplifier.
Every
NIKKO
product
is
subjected
to
a
series
of
strict
quality
control
tests
before
shipment
to
ensure
total
reliability.
In
order
to
get
the
most
out
of
your
amplifier,
please
read
this
Instruction”
Manual
carefully
and
follow
its
instructions.
Should
you
have
any
doubts
or
questions,
please
contact
your
nearest
NIKKO
dealer.
PRECAUTIONS
Installation
In order to derive maximum performance from the unit, please pay
close attention to the following points:
e Do not place the unit in a location exposed to direct sunlight and
keep away from heat (stoves, etc.).
@ Make sure the unit is well ventilated and is not exposed to moisture
or dampness.
e Do not place the unit in a location with excessive dust.
® Make sure the unit is placed on a flat, stable surface, free from
vibrations.
e¢ Do not expose the unit to flammable objects and avoid the use
of spray cans (hair sprays, etc.) near the unit.
e Be sure to install the unit in a level position. Do not use the unit
in a vertical or slanted position as overheating of internal parts
may result, badly damaging the unit.
This unit is designed so that heat created during operation is dissi-
pated through the ventilation openings in the top and bottom panels.
Maintain free and unrestricted ventilation, and do not remove the feet
of the unit. Avoid blocking the ventilation openings (be careful of
curtains, draperies, rugs, etc. blocking the openings). When installing
in a rack or shelf, be sure the unit is properly ventilated. Allow at
least 2 inches of space on all sides.
Connections
Connect all leads firmly to the speaker and input/output terminals.
Loose connections or shorting with other parts of the unit can lead
to impaired performance and might even cause interference and
damage to the unit. Always turn the power off and remove the plug
from the power outlet before connecting or disconnecting leads, or
changing your turntable‘s cartridge.
Operation
During record playback, howling and hum may occur. In such cases,
check for the following problems:
(1) If the turntable is placed on, or is close to a speaker, vibrations
from the speaker are easily picked up by the cartridge, causing
howling. In this case move the turntable further away from the
speaker or try to insulate the turntable using a thick cushion
or the like.
(2) f unshielded cables are used for turntable connection, hum
may occur. Hum may also come about when a shielded cable
is used, when the ground (outer mesh) and signal! (inner core)
connections are reversed, or if the turntable motor is not properly
grounded.
if the cabinet becomes dirty, wipe dirt off with a soft cloth. Do not
use alcohol, thinner, benzine, aerosol products, or other chemicals
for cleaning the cabinet.
Shouid your unit require service or maintenance, contact your nearest
authorized NIKKO Service Center or your dealer.
Protective Circuits
The built-in protective circuits are immediately activated if any of the
following situations should occur:
(1) Short-circuiting of speaker output connections.
(2) Presence of DC components in the signal (which could damage
your speakers seriously).
tf there is no sound in both channels when the POWER button is
turned on, first make sure that all connections and operation proce-
dures are correct. Then turn off the POWER button, turn the volume
down and wait a few seconds. Next, turn the POWER button on again.
If the sound from both speakers is cut off again, some malfunction
or problem inside the circuitry preventing the signal from being sent
to the speakers may be suspected. In this case contact your nearest
authorized NIKKO Service Center for inspection and/or servicing.
Note: if a short-circuit occurs, the protective circuits will cut off
the sound output. However, if the speakers are properly
connected to the rear panel SPEAKERS terminals, sound
output will return in afew seconds.
Warning: To prevent fire or shock hazard, do not expose this
appliance to rain or moisture.