Are the connections correct, 9 troubleshooting – Denon AVR-2500 User Manual
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LAST FUNCTION MEMORY
This receiver is equipped with a last function memory which stores the input and output setting conditions as they were immediately
before the power is switched off.
This function eliminates the need to perform complicated resettings when the power is switched on.
This receiver is also equipped with a back-up memory. This function provides approximately one week of memory storage with the
power cord disconnected.
9 TROUBLESHOOTING
If a problem should arise, first check the following;
1. Are the connections correct?
2. Have you operated the amplifier according to the Operating Instructions?
3. Are the speakers, turntable, and other components operating properly?
If the receiver 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 pro-
Power cord not plugged in securely.
4
Check the insertion of the power cord
5
duced when power switch set to on.
Pidg.
DISPLAY lit but sound not produced.
*
Speaker cords not securely connected.
4
Connect securely.
5, 6
«
Speaker switch is off.
4
Turn on speaker switch.
13
CO
Improper position of the audio function
button.
4
Set to a suitable position.
13
O
«
Volume control set to minimum.
4
Turn volume up to suitable level.
13
o
03
•
MUTING is on,
4
Switch off MUTING,
14
d
“PROTECT- display appears.
•
Speaker terminals are short-circuited.
4
Switch power off, connect speakers prop-
5, 6
u
, ■
erly, then switch power back on.
Block the ventilation holes of the set.
4
Turn off the set's power, then ventilate it
4
well to cool it down.
Once the set is cooied down, turn the
03
c
power back on.
c
•
The unit is operating at continuous high
4
Turn off the set's power, then ventilate it
4
power conditions and/or inadequate ven-
well to cool it down.
—
til at ion.
Once the set is cooled down, turn the
c
power back on.
Sound produced only from one
•
Incomplete connection of speaker cords.
4
Connect securely.
5, 6
® s
channel.
*
Incomplete connection of input/output
4
Connect securely.
5—7
« TO
cords.
tJ
go
•
Left/righi balance is off.
4
Adjust balance knob properly.
14
Positions of instruments reversed
♦
Reverse connections of left and right
4
Check left and right connections.
5-7
during stereo playback.
speakers or left and right input/output
2
cords.
II
c
c:
o
Sound seems distorted.
•
Effect level parameter is high.
4
Set the effect level parameter to lower
17
£ -
level.
C
o CL
•
Rear level is too high.
4
Set the rear level to lower level.
17
o S
Sound seems strange.
•
DSP parameter settings are poor.
4
Press the CLEAR button then adjust the
DSP parameters.
17
Personal memory function does not
•
DAT/tape monitor mode set.
4
The DAT/TAPE MONITOR position cannot
17
work.
be set in the personal memory.
Humming noise produced when re-
Ground wire of turntable not connected
4
Connect securely.
5
cord is playing.
«
properly.
Incomplete PHONO jack connection.
4
Connect securely.
5
♦
TV or radio transmission antenna nearby.
4
Contact your store of purchase.
~
Howling noise produced when
«
Turntable and speaker systems too close
4
Separate as much as possible.
O
volume is high.
together.
4
Floor is unstable and vibrates easily.
4
Use cushions to absorb speaker vibra-
-
Cf>
c
tions transmitted by floor. If turntable is
>
not equipped with insulators, use audio
Q.
insulators (commonly available).
C
03
Sound is distorted.
•
Stylus pressure too weak.
4
Apply proper stylus pressure.
1
•
Dust or dirt on stylus.
4
Check stylus.
-
•
Cartridge defective.
4
Replace cartridge.
-
Volume is weak.
•
MC cartridge being used.
4
Replace with MM cartridge or use a head
amplifier or step-up transformer.
5
o
Receiver does not operate properly
4
Batteries dead.
4
Replace with new batteries.
9
when remote control unit is used.
4
Remote control unit too far from receiver.
4
Move closer.
9
o
4
Obstacle between receiver and remote
4
Remove obstacle.
9
control unit.
o
4
Different button is being pressed.
4
Press the proper button.
4
(T) snd ends of battery inserted in
4
insert batteries properly.
9
reverse.
'
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