Sharp OPTONICA SM-1616H - Troubleshooting Common Issues; Problem, Cause, and Correction Chart

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TROUBLE SHOOTING CHART
PROBLEM PROBABLE CAUSE CORRECTIVE ACTION
Unit will not turn on. AC supply cord is not connected
properly.
Check supply cord plug for positive
connection at the outlet.
No
sound
from
either
channel.
Speaker
selector
is
in
“off”
Move
speaker
selector
to
‘a’
or
position.
““b”
position.
Volume
control
is
in
“0”
position.
Rotate
the
volume
control.
Speakers are shorted.
Check speaker wiring to remove
short.
Function
selector
is
in
the
wrong
Reset
the
function
selector.
position.
Tape monitor switch is set incor-
rectly.
Reset tape monitor switch.
No
sound
from
one
channel.
Balance
control
is
set
to
one
side.
Return balance control to center
position.
Ea
Speaker
is
not
connected
properly.
Check
and
reconnect
speaker
properly.
Figure 15
Audio cable from program source
is not connected properly.
Check and reconnect cables proper
ly.
Volume
is
too
low.
|
Muting
switch
is
in
““—20dB”
posi-
Muting
switch
to
‘“‘0dB”’
position.
tion.
Volume control is not adjusted Rotate volume control.
properly.
No
stereo,
Mode
selector
is
in
““mono”’
posi-
tion.
Mode selector to “‘stereo”’ position.
Lack
of
definition
between
chan-
Speaker
wiring
polarity
is
wrong.
Check
&
reconnect
wires
with
nels
(Lack
of
separation)
proper
polarity.
In phono mode there is an annoy-
ing hum.
Ground wire is connected improp-
erly.
Check and reconnect ground wire.
Polarity of line plug is wrong.
Reverse the line cord plug.
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