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10
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.
7
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.
5
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.
5
5
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.
6
7
8
6
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.
Connect securely.
Adjust to a proper balance with the balance
control knob.
6
6
8
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.
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.
Connect securely.
Try changing the positions in which the devices
are installed.
6
6
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
B
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.
M
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.
P
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.
S
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
1.PMA1510AEE2_ENG_002_5th_0222.indd 10 2010/02/23 15:55:18
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