Onkyo TX-820 - Page 11

Trouble shooting guide
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NOTE (TX-820 only):
‘lf a problem occurs, first operate the unit using the front panel
controls to confirm that it is not due to a malfunction (or worn
out batteries) of the remote control transmitter.
Trouble
No power. @ Power cord is disconnected. @ Connect power cord.
®@ AC fuse blown. ® Contact Onkyo Service Center.
Power but no sound. ®@ Tape monitor switch on. ®@ Switch to off.
® Audio muting switch on.(TX-820 only) | @ Switch to off by remote contro! transmitter.
® Bad connections. ® Check input leads, speaker leads, pin plugs, etc.
®@ Amplifier protection circuitry has been |@ Contact Onkyo Service Center.
activated.
Hum, low frequency noise. @ Poor or no input ground. ® Check outer conductor of input plugs.
® Poor or no phono motor ground. ® Check for proper ground connection.
Howling when the volume is turned up. | @ Turntable and speakers are too close ® Move them farther apart.
together.
Rough or scratchy sound. High range is | ® Stylus of pick-up is worn. @ Replace.
not clear. ® Stylus tip is dirty. @ Clean.
@ Treble control too high. ® Turn treble contro! down.
AM stations cannot be received. @ AM !oop antenna is not attached. ® Connect the included AM loop antenna to the AM
antenna terminals.
Buzzing noise on AM (particularly con- | @ Noise from electrical apparatus such as |@ Move AM loop antenna to different position.
spicuous at night or with weak stations). | fluorescent lamp. ® Set up outdoor AM antenna.
High pitched noise or buzzing noise on | @ Noise from TV. ® Place the AM loop antenna as far as possible from
TV. the TV.
@ Move unit away from TV set.
Crackling noise on AM and FM. ®@ Noise caused by turning fluorescent @ Move antenna as far as possible from the fiuores-
lamp on and off. cent lamp.
®@ Noise from automobile ignition. @ Install and FM outdoor antenna as far as possible
from the road.
®@ Change the position or direction of the outdoor
antenna.
FM tuned and stereo indicators light but | @ Station is too strong. ® Change to T-shaped antenna.
sound is distorted and stereo separation | @ Multiple reflection of the radio waves {| @ Use antenna which has better directivity andselect
is bad. because of tall buildings or mountains. a point where the distortion is least.
FM tuned and stereo indicators flicker ® Station is too weak. ®@ Install an outdoor FM antenna.
on and off and hiss is heard on FM. ® Stereophonic FM broadcasts cover only | @ Change the position or direction of the outdoor
about half the distance of an ordinary antenna.
broadcasts.
No station is recalled when a FM/AM ®@ The power switch has not been turned |® The memory contents are lost if the power switch
is not turned on a few times each month. Store
all stations again and remember to turn the power
on a few times each month.
on for a long time or the power cord has
been unplugged for a !ong time.
preset button is pressed.
@ insert batteries.
®@ Replace batteries.
®@ No batteries in remote control transmit-
ter.
® Batteries have worn out.
Front panel controls function but remote
control transmitter does not. (TX-820
only)
The
tuning
steps
by
which
the
tuned
frequency
changes
on
each
band
have
been
set
at
the
factory
to
the
proper
value
for
the
country
where
each
unit
isto
be
sold.
If
you
use
the
unit
in
a
country
where
a
different
tuning
step
is
required
or
if
the
broadcast
frequencies
in
your cocantry
change
so
that
you
can
not
tune
in
radio
stations
precisely,
take
this
unit
to
an
authorized
Onkyo
Service
Center.