Bedienungsanleitung Denon AVR-550SD (Seite 45 von 96) (Deutsch)

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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 Measures Page

DISPLAY not lit and

sound not produced

when power switch

set to on.

• Power cord not plugged in securely. • Check the insertion of the power cord

plug.

DISPLAY lit but sound

not produced.

• Speaker cords not securely connected.

• Improper position of the audio function

button.

• Volume control set to minimum.

• MUTING is on.

• Digital signals not input Digital input

selected.

• Connect securely.

• Set to a suitable position.

• Turn volume up to suitable level.

• Switch off MUTING.

• Input digital signals or select input jacks

to which digital signals are being input.

9, 10

DISPLAY not lit and

power indicator is

flashing rapidly.

• Speaker terminals are short-circuited.

• Block the ventilation holes of the set.

• The unit is operating at continuous high

power conditions and/or inadequate

ventilation.

• Switch power off, connect speakers

properly, then switch power back on.

• Turn off the set’s power, then ventilate it

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

well to cool it down.

Once the set is cooled down, turn the

power back on.

9, 10

Sound produced only

from one channel.

• Incomplete connection of speaker cords.

• Incomplete connection of input/output

cords.

• Connect securely.

9, 10

6 ~ 10

Positions of

instruments reversed

during stereo playback.

• Reverse connections of left and right

speakers or left and right input/output

cords.

• Check left and right connections. 10

Common problems when listening to the CD, records, tapes and FM broadcasts, etc.

Symptom Cause Measures Page

Humming noise

produced when record

is playing.

• TV or radio transmission antenna nearby. • Contact your store of purchase. —

Howling noise

produced when

volume is high.

• Turntable and speaker systems too close

together.

• Floor is unstable and vibrates easily.

• 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).

—

Sound is distorted.

• Stylus pressure too weak.

• Dust or dirt on stylus.

• Cartridge defective.

• Apply proper stylus pressure.

• Check stylus.

• Replace cartridge.

—

When playing records

Remote control unit

This unit does not

operate properly when

remote control unit is

used.

• Batteries dead.

• Remote control unit too far from this

unit.

• Obstacle between this unit and remote

control unit.

• Different button is being pressed.

• < and > ends of battery inserted in

reverse.

• Replace with new batteries.

• Move closer.

• Remove obstacle.

• Press the proper button.

• Insert batteries properly.

—

Speaker system (SYS-550SD)

Active subwoofer (DSW-3L):

LED does not light and

no sound is produced

when power is turned

on.

• AC power plug is not securely

connected.

• Check the connection of the AC power

plug.

Active subwoofer (DSW-3L):

LED lights but no

sound is produced.

• Cords are not securely connected.

• Volume adjustment control is turned all

the way down.

• Connect securely.

• Turn the control and set it to the desired

position.

9, 10

Active subwoofer (DSW-3L):

LED flashes and no

sound is produced.

• Protective circuit has been activated

due to excess input or rise in

temperature.

• 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.

—

Active subwoofer (DSW-3L):

Sound is distorted.

• Volume level is too high.

• Sound is being distorted on connected

amplifier.

• 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.)

37, 38

Active subwoofer (DSW-3L):

Oscillation (loud continuous

sound produced).

• Volume of active subwoofer or

amplifier set too high.

• Lower the volume of the active

subwoofer or amplifier.

37, 38

For improvement purposes, specifications and design are subject to change without notice.

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