Troubleshooting - Denon AVR-486 Operating Instructions Manual

ENGLISH

Troubleshooting

If a problem should arise,first check the following.
1. Are the connections correct?
2. Have you operated the receiver according to the operating instructions?
3. Are the speakers, turntable and other components operating property?
If this unit is not operating properly, check the items listed in the table below. Should the problem
persist, there may be a malfunction. Disconnect the power immediately and contact your store of
purchase.
Symptom Cause
• Power supply cord not plugged in
Display not lit and
securely.
sound not produced
when POWER switch
set to on.
• Speaker cables
connected.
• Improper setting of the INPUT
SELECTOR knob.
Display lit but sound
• Volume control set to minimum.
not produced.
• MUTING is on.
• Digital signals not input. Digital input
selected.
• Speaker terminals
circuited.
• The ventilation holes of the set are
blocked.
Display not lit and
power indicator is
flashing rapidly.
• The unit is operating at continuous
high power conditions and/or with
inadequate ventilation.
• Incomplete connection of speaker
Sound produced only cables.
from one channel. • Incomplete connection of input/
output cables.
Positions of • Reverse connections of left and
instruments reversed right speakers or left and right
during stereo playback. input/output cables.
• Speaker systems
Howling noise
together.
produced when
• Floor is unstable and vibrates
volume is high.
easily.
Measures
• Check the insertion of the power
supply cord plug.
• Turn the power on with the remote
control unit after turning the
POWER switch on.
not securely • Connect securely.
• Set to a suitable position.
• Turn volume up to suitable level.
• Switch off MUTING.
• Input digital signals or select input
terminals to which digital signals
are being input.
are short- • Switch power off, connect
speakers properly, then switch
power back on.
• Turn off the set's power, then
ventilate it well and allow it to cool
down.
Once the set has cooled down,
turn the power back on.
• Turn off the set's power, then
ventilate it well and allow it to cool
down.
Once the set has cooled down,
turn the power back on.
• Connect securely.
• Connect securely.
• Check left and right connections.
too close • Separate as much as possible.
• Use cushions to absorb speaker
vibrations transmitted by floor.
Symptom
• Stylus pressure too weak.
Sound is distorted.
• Dust or dirt on stylus.
• Batteries dead.
• Remote control unit too far from
This unit does not this unit.
operate properly when • Obstacle between this unit and
remote control unit is remote control unit.
used. • Different button is being pressed.
<
• and
in reverse.
Page
NOTE:
6
• For ordinary speaker systems, we recommend setting the crossover frequency to 80 Hz.
When using small speakers, however, setting the crossover frequency to a high frequency
7
may improve frequency response for frequencies near the crossover frequency.
5
2 NOTE ON USE
18
18
18
20
5
2, 5
Avoid high temperatures.
Allow for sufficient heat dispersion
2, 5
when installed in a rack.
5
5, 6,
9~11
5
—
Handle the power cord carefully.
Hold the plug when unplugging the
—
cord.
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Cause Measures
• Apply proper stylus pressure.
• Check stylus.
• Replace with new batteries.
• Move closer.
• Remove obstacle.
• Press the proper button.
>
ends of batteries inserted • Insert batteries properly.
Do not let foreign objects into the
apparatus.
Keep the apparatus free from
moisture, water, and dust.
Do not let insecticides, benzene,
Unplug the power cord when not
and thinner come in contact with
using the apparatus for long
the apparatus.
periods of time.
* (For apparatuses with ventilation holes)
Never disassemble or modify the
Do not obstruct the ventilation holes.
apparatus in any way.
Troubleshooting
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