Bedienungsanleitung Denon PMA-520AE (Seite 21 von 24) (Englisch)

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Troubleshooting

If a problem occurs, ﬁrst check the following:

1. Are the connections correct?

2. Is the unit being operated as described in the owner’s manual?

3. Are the other components operating properly?

If this unit does not operate properly, check the items listed in the table below. If the problem persist there

may be a malfunction.

In that case, disconnect the power immediately and contact your retail outlet.

Symptom Cause Countermeasure Page

When the power is

turned on, the power

indicator does not

light and no sound is

produced.

•The power cord’s plug is not

fully plugged in.

•Check if the cord is securely

inserted into the wall power

outlet.

Power switches

off suddenly while

you are using the

unit, the power

indicator will ﬂash

in red at intervals

of approximately 1

seconds.

•The protection circuit will be

activated depending upon the

temperature rise in the internal

parts of the unit.

•Please switch off power at

once, and re-apply the power

after the body temperature has

fallen sufﬁciently.

•Please re-install the unit in a

place having good ventilation.

Power switches

off suddenly while

you are using the

unit, the power

indicator will ﬂash

red at intervals of

approximately 0.5

seconds.

•A speaker with impedance not

supported by this unit is used.

•The protection circuit has been

activated because the core

wires of different speaker

cables have touched each other

or a core wire was slipped out

of the terminal and is touching

the unit’s rear panel.

•Please use speakers which

have the speciﬁed impedance.

•Unplug the power cord,

then after twisting the core

wires together tightly again,

or effecting termination

treatments etc, please

reconnect once again.

Even applying

power, the power

display ﬂashes

red at intervals of

approximately 0.5

seconds.

•The ampliﬁer circuit has failed. •Switch off the power and

please contact the DENON

service adviser.

–

Symptom Cause Countermeasure Page

The power indicator

lights but no sound is

produced.

•The speaker cables are not fully

connected.

•The device you want to listen

to has not been selected.

•The volume control is set to

minimum.

•The input cable is not fully

connected.

•Connect securely.

•Insure the correct input is

selected.

•Set to an appropriate level.

•Connect securely.

5,6

10,13

Sound is only

produced from the

left or right speaker

(s).

•The speaker cables are not fully

connected.

•The input cable is not fully

connected.

•The left/right balance is off.

•Connect securely.

•Adjust to a proper balance with

the balance control knob.

4,5,6

5,6

The left and right

of stereo sound is

reversed.

•The connections of the

speakers or input cables are

reversed.

•Check the connections to be

sure that left is connected to

left, right to right.

5, 6

Humming sound

is heard in the

music when playing

records.

•The player’s ground wire is not

connected.

•The cables are not fully

connected to the PHONO

terminals.

•Inﬂuence from a TV or VCR

near the player.

•Connect securely.

•Try changing the positions in

which the devices are installed.

–

Howling is produced

along with the music

if the volume is too

high when playing

records.

•The player and speakers are

too close together.

•The vibrations from the

speakers are being transmitted

to the player through the ﬂoor.

•Install the player and speakers

as far from each other as

possible.

•Use cushions, etc., to absorb

the speakers’ vibrations.

–

When playing a

record, the sound is

distorted.

•The needle pressure is

incorrect.

•There is dirt on the tip of the

needle.

•The cartridge is defective.

•Adjust to a proper needle

pressure.

•Check the tip of the needle.

•Replace the cartridge.

–

Preparations

Operations

InformationInformation

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