Denon PMA-1510AE Owner's Manual download pdf (Page 14)

ENGLISH

Getting started

Basic connections Basic operation Troubleshooting Speciﬁcations IndexAdvanced connections Advanced operation Explanation terms

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

unit’s AC inlet and 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.

III

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.

–

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.

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.

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.

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.

–

Troubleshooting

Bi-wiring Connection

This method of connecting a speaker by using two

speaker cables enables separate transmission of

treble and bass signals.

This enables playback with minimal interference

between the high-range speaker unit and the low-

range speaker unit.

MM/MC cartridge select

There are two types--MM (Moving Magnet) and MC

(Moving Coil)--of cartridges for turntable.

As the output levels for these two types of

cartridges differ, the setting of the phono equalizer

that is mounted in this unit must be switched

according to the type of cartridge for your

turntable. For switching, use the MM/MC cartridge

select button.

Protection Circuit

This is a function to prevent damage to components

within the power supply when an abnormality such

as an overload or excess voltage occurs for any

reason.

In this unit, the power indicator blinks and the unit

enters standby mode when an abnormality occurs.

Source direct

Playback with higher ﬁdelity to the source becomes

possible, as input audio signals are output by

bypassing the audio quality-control circuits (bass/

treble/balance).

Speaker impedance

This is certain-rated resistance of the speaker set

to an alternating current and expressed in ohms.

The smaller the impedance, the greater the output.

However, load on the ampliﬁer is increased. Use

speakers whose impedance is supported by this

unit.

Explanation terms

TroubleshootingExplanation terms

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Denon PMA-1510AE Owner's Manual Page 14

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