Troubleshooting - Denon avr-2105 Operating Instructions Manual

ENGLISH
17

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
DISPLAY not lit and • Power cord not plugged in securely.
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.
42
Cause Measures
• Check the insertion of the power cord
plug.
• Turn the power on with the remote control
unit after turning the POWER switch on.
• 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.
• 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.
• Connect securely.
• Connect securely.
• Check left and right connections.
Symptom
• Ground wire of turntable not connected
Humming noise
properly.
produced when record
• Incomplete PHONO jack connection.
is playing.
• TV or radio transmission antenna nearby.
• Turntable and speaker systems too close
together.
Howling noise
• Floor is unstable and vibrates easily.
produced when
volume is high.
Page
• Stylus pressure too weak.
5
Sound is distorted. • Dust or dirt on stylus.
• Cartridge defective.
21
• MC cartridge being used.
Volume is weak.
8, 9
22 • Batteries dead.
• Remote control unit too far from this unit.
This unit does not
22
• Obstacle between this unit and remote
operate properly when
24 control unit.
remote control unit is
22
• Different button is being pressed.
used.
• < and > ends of battery inserted in
reverse.
8, 9
5, 8
5, 8
8, 9
5 ~ 9
9
Cause Measures
• Connect securely.
• Connect securely.
• 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 MM cartridge or use a
head amplifier or step-up transformer.
• Replace with new batteries.
• Move closer.
• Remove obstacle.
• Press the proper button.
• Insert batteries properly.
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