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Safety precautions
IAWARNING
I
To prevent injury or fire, take the following precautions:
• Mounting and wiring
this product requires
skills and experience.
For
safety's sake,
leave the mounting and
wiring work
to professionals.
• To
prevent
a
short
circuit,
never put
or
leave any metallic
objects
(such
as
coins or
metal tools) inside the unit.
• If the unit
starts
to
emit smoke or strange smells,
turn
off
the power
immediately
and consult your JVC
dealer.
• Do not
touch
the unit during use because the
surface of the
unit becomes
hot
and
may
cause
burns if touched.
I
A CAUTION
I
To
prevent damage to the machine, take the following precautions:
•
Be sure
the unit is
connected
to
a
12
V
DC power
supply with a
negative
ground connection.
• Do not
open
the
top or bottom covers of
the unit.
• Do not install the unit in
a spot exposed to
direct
sunlight or
excessive
heat
or
humidity.
• When
replacing
a
fuse,
only
use a new
one with
the prescribed rating. Using
a fuse
with
the
wrong
rating may
cause your
unit to malfunction.
•
To prevent
a short
circuit
when
replacing
a
fuse,
first disconnect the
wiring
harness.
I
NOTE
I
• If
you experience
problems during installation,
consult your JVC
dealer.
• If the unit does not
seem to
be
working
right,
consult your JVC
dealer.
Cleaning the unit
If the front panel gets dirty, turn
off
the power
and wipe
the panel
with a
dry
silicon
cloth
or soft
cloth.
I
A CAUTION
I
Do not
wipe
the panel
with a
hard cloth
or
a cloth dampened by
volatile
solvents
such
as paint thinner and
alcohol.
They
can scratch
the
surface of
the
panel
and/ or cause
the indicator letters to peel
off.
To prevent battery rise
When the
unit is used in the
ACC ON
position
without
turning the
engine
ON,
it depletes the battery. Use it after
starting the engine.
Protection function
The protection function is
activated
in the
following situations:
This unit is
equipped with a
protection function
for
protecting this unit and
your speakers
from
various accidents or
problems that
can occur.
When the
protection function is
triggered,
the
amplifier stops operating.
• When a speaker wire
may be short-circuited.
•
When
a
speaker output contacts
ground.
• When
the unit malfunctions and a DC
signal
is
sent
to the
speaker output.
•
When
the internal temperature is high
and
unit
won't
operate.
•
When
detects
a
low impedance
at
the
speaker connections.
Wiring
• If a buzzing noise is heard from the
speakers when
the
engine
is running,
connect a
line noise filter
(optional)
to
each of
the battery
wire.
• Do not allow the
wire
to directly
contact
the edge
of
the iron plate by
using Grommets.
•
Connect
the ground
wire
to
a
metal part
of
the
car chassis
that acts
as an
electrical
ground passing
electricity
to the
battery's
negative8terminal.
Do not turn the power
on
if the ground
wire
is not
connected.
•
Be
sure
to install
a
protective fuse in
the
power
cord
near the battery. The
protective fuse
should
be the
same capacity as
the unit's fuse
capacity or
somewhat
larger.
• When
more than
one
power
amplifier
are going to be
used,
use a power
supply wiring wire
and protective fuse
of
greater
current-handling capac-
ity than the total maximum
current
drawn by
each amplifier.
Speaker selection
• Using
speakers with smaller
input
ratings
than the
amplifier's
output
power
would
result in
smoke
generation
or
equipment failure.
•
The impedance of the
speakers
that
are
going to be
connected should
be
2 0 or
greater
(for stereo connections), or
4 0
or
greater
(for
bridged
connections). When
more than one
set of speakers
are going to be
used,
calculate
the
combined
impedance
of
the
speakers and
then
connect
suitable speakers
to the amplifier.
<Example>
~ - - - -
--,
-------------~
0 '
40: ~ · :
'
'
'
•
•
'
40
40,
,
e·
,
-
40
'
-
•
I
I
I
I
'•
•
•
•
•
•
•·
'•
- • • •
•
• • • • • • • I
so
Combined
20
t _
impedance
__j'
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