Troubleshooting - Denon AVR-786 Operating Instructions Manual

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 and other components operating properly?
If this unit is not operating properly, check the items listed in the table belew. Should the problem
persist, there may be a malfunction. Disconnect the power immediately and centact your store ef
purchase.
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Display not lit and • Power supply cord not plugged in • Check the insertion of the power 17
securely, supply cord plug.
sound not produced • Turn the power on with the remote 8
when POWER switch control unit after turning the
set to on. POWER switch on.
• Connect securely.
Display lit but sound
not produced.
Display not lit and
3ower indicator is
flashing rapidly.
• Speaker cables not securely
connected.
• Improper setting of the FUNCTION
knob.
• Volume control set to minimum.
• MUTING is on.
• Digital signals not input. Digital
input selected.
• Speaker terminals are short-
circuited.
• The ventilation holes of the set are
blocked.
• The unit is operating at continuous
high power conditions and/or with
inadequate ventilation.
• 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.
• 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.
6
18
18
18
19, 20
5,6
2,5
2,5
• Incomplete connection of speaker 5, 6
Sound produced only cables.
from one channel. • Incomplete connection of input/ • Connect securely. 5-_7,
output cables. 11 _17
Positions of • Reverse connections of left and • Check left and right connections. 6
instruments reversed right speakers or left and right
during stereo playback, input/output cables.
Howling noise • Speaker systems too close • Separate as much as possible. --
3roduced when together.
• Floor is unstable and vibrates • Use cushions to absorb speaker --
volume is high. easily, vibrations transmitted by floor.
Troubleshooting
Sound is distorted.
This unit does not
operate properly when
remote control unit is
used.
• Stylus pressure too weak.
• Dust or dirt on stylus.
• Batteries dead.
• Remote control unit too far from
this unit.
• Obstacle between this unit and
remote control unit.
• Different button is being pressed.
• (_) and O ends of batteries inserted
in reverse.
• Apply proper stylus pressure.
• Check stylus.
• Replace with new batteries.
• Move closer.
• Remove obstacle.
• Press the proper button.
• Insert batteries properly.
3
• NOTE ON USE
Avoid high temperatHres
Allow for sufficient heat dispersion
when installed in a rack.
Handle the power cord carefully.
Hold the plug when unplugging the
cord.
Keep the apparatus free from
moisture, water, and dust.
Unplug the power cord when not
using the apparatus for long
periods of time.
(Forapparatuses with ventilation holes}
Do not obstruct the ventilation holes.
Do not let foreign objects into the
apparatus.
Do not let insecticides, benzene,
and thinner come in contact with
the apparatus.
Never disassemble or modify the
apparatus in any way.
50
I ENGLISH I