Yamaha ca-410 Panduan Pemilik - Halaman 13

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Halaman Cetak
TROUBTE
SHOOTING
Before
assuming
that
your
CA
410
is
Taulty, check the
following
trouble-shooting list. which
details
corrective action you
can
take yourself,
without
having
to call
a
service
representative.
Fa|llt
Cause
No power
althouqh
POWER
switch
is
ON
{POWER LED
unlit)
Plug
firmly inlo
the supply socket
In
this
câse
contact
service
representâtive*
Cure
Check and
change
as
necessary
No
sound although power
is
connected
Sound
comes
only, or mainly. from eirher
L
or
R speaker
Sound suddenly
cases
during âodition
Poor
bass
response
and badly
delined
sr€reo
image
A loud 'hummins'
is
h€ard
instead
of th€
record when
attempting
phono
âudition
Input
plugs
incorrectly
inserted,
loose,
or
disconnected
Ch€ck and insert
fullv
in the
correct
oositions
Speaker connectjons
f
aùlty
Speaker
connections
faulty
Input connedions
faully
I
Balance
control not properly
adjusted
Either the pin-plugs
from
the
phono
cartridge
are
not
firmty
plugged
into the input
sockets,
or
the
braaded
shiejdinq
wire
Set
to
give
correct stereo
balance
Sound
will
be restored
âs
soon
as
the
fault
clears
lf
the
faull
persists,
switch OFF
and
wait
briefly
before
switchinq ON
again.
ln this
câse
contact
service
representative"
Reverse
the connections
to
one speaker
(not
both)
Plug
jn
firmly,
replacinq the
faulty
shielding
if
Checl.
dnd make good
rhe
GND (g'ound) wire
Increase
the separation between
turntable unit
and
spea-
kers
avoiding locations
directly
in
lin€
with
the
speakers
lniorm
your
local radio licensing
authorit,
Consult
with
a
technjcâl
rep.
ât
your
local
Yamaha retaiter.
Check and
make
good
Check
and
make
good
Check and make good
The
VOLUME
cannot
be raised
durins
record
audition
without
a
loud "booming"noise
Amateur radio transmissions
are
heârd mixed
wirh
program material
This
is
caused
by sound
from
the
speakers
reachang
the
phono
cartridge stylus
Bass
and treble frequencies
are
unnatural and
exaggerated
The
LOUNDNESS
switch
is
ON
Amateur transmissions
are
taking
place
in the very
near
neighborhood
Switch OFF
except
at low
listening
levels
AC power
line not
plugged
into
supply socket
AC main fuse
has
blown.
INPUT
SELECTOR in
wrong
pos,t'on
The
protective circuit
has
detected 12
V
DC
at the
speaker
terminals, ând disconnected them.
AC main fuse
has
blown
Speaker
phase
polaritv
(1 connections) incorrect)
Ine
|-lÈL
uul uFr
s!1JrÎch
rsât
ul-l-
l3
Recording
is
impossible
*Note:
Thefuse
is
not
user-accessible: leâve
reoiacement
to
a
service reo
Set
to
the appropriate
source