Troubleshooting - Denon AVR-550SD, SYS-550SD Bedienungsanleitung

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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 cord not plugged in securely.
DISPLAY not lit and
sound not produced
when power switch
set to on.
• Speaker cords not securely connected.
• Improper position of the audio function
button.
DISPLAY lit but sound
• Volume control set to minimum.
not produced.
• MUTING is on.
• Digital signals not input Digital input
selected.
• Speaker terminals are short-circuited.
• Block the ventilation holes of the set.
DISPLAY not lit and
power indicator is
flashing rapidly.
• The unit is operating at continuous high
power conditions and/or inadequate
ventilation.
• Incomplete connection of speaker cords.
Sound produced only • Incomplete connection of input/output
from one channel. cords.
Positions of • Reverse connections of left and right
instruments reversed speakers or left and right input/output
during stereo playback. cords.
Measures Page
• Check the insertion of the power cord 6
plug.
• Connect securely. 9, 10
• Set to a suitable position. 19
• Turn volume up to suitable level. 20
• Switch off MUTING. 21
• Input digital signals or select input jacks 19
to which digital signals are being input.
• Switch power off, connect speakers 9, 10
properly, then switch power back on.
• Turn off the set's power, then ventilate it 3
well to cool it down.
Once the set is cooled down, turn the
power back on.
• Turn off the set's power, then ventilate it 3
well to cool it down.
Once the set is cooled down, turn the
power back on.
• Connect securely. 9, 10
• Connect securely. 6 ~ 10
• Check left and right connections. 10
Symptom Cause
Humming noise • TV or radio transmission antenna nearby.
produced when record
is playing.
• Turntable and speaker systems too close
together.
Howling noise • Floor is unstable and vibrates easily.
produced when
volume is high.
• Stylus pressure too weak.
Sound is distorted. • Dust or dirt on stylus.
• Cartridge defective.
• Batteries dead.
• Remote control unit too far from this
This unit does not unit.
operate properly when • Obstacle between this unit and remote
remote control unit is control unit.
used. • Different button is being pressed.
• < and > ends of battery inserted in
reverse.
• AC power plug is not securely
Active subwoofer (DSW-3L):
connected.
LED does not light and
no sound is produced
when power is turned
on.
• Cords are not securely connected.
Active subwoofer (DSW-3L):
• Volume adjustment control is turned all
LED lights but no
the way down.
sound is produced.
• Protective circuit has been activated
due to excess input or rise in
temperature.
Active subwoofer (DSW-3L):
LED flashes and no
sound is produced.
• Volume level is too high.
Active subwoofer (DSW-3L):
• Sound is being distorted on connected
Sound is distorted.
amplifier.
• Volume of active
Active subwoofer (DSW-3L): amplifier set too high.
Oscillation (loud continuous
sound produced).
For improvement purposes, specifications and design are subject to change without notice.
Measures
• Contact your store of purchase.
• Separate as much as possible.
• Use cushions to absorb speaker
vibrations transmitted by floor. If
turntable is not equipped with insulators,
use audio insulators (commonly
available).
• Apply proper stylus pressure.
• Check stylus.
• Replace cartridge.
• Replace with new batteries.
• Move closer.
• Remove obstacle.
• Press the proper button.
• Insert batteries properly.
• Check the connection of the AC power
plug.
• Connect securely.
• Turn the control and set it to the desired
position.
• Set the power switch to the "OFF"
position, wait at least 1 minute, then
set the power switch back to the "ON"
position. If the problem persists, unplug
the AC power cord from the AC power
outlet and contact your store of
purchase.
• Turn the volume adjustment control
counterclockwise to lower the volume.
• Do not amplify the bass sound on the
amplifier. (Lower the amplifier's bass
adjustment control or volume.)
subwoofer or • Lower the volume of the active
subwoofer or amplifier.
ENGLISH
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