Yamaha ca-410 - Troubleshooting Guide

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