Denon AVR-4800 Operations Instructions download pdf (Page 60)

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 Cause Measures Page

DISPLAY not lit and sound not produced

when power switch set to on.

• Power cord not plugged in securely. • Check the insertion of the power cord plug.

• Turn the power on with the remote control

unit after turning the POWER switch on.

DISPLAY lit but sound not produced.

• Speaker cords not securely connected.

• Improper position of the audio function

button.

• Volume control set to minimum.

• MUTING is on.

• Digital signals not input Digital input

selected.

• 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.

12 ~ 14

DISPLAY not lit and power indicator is

flashing rapidly.

• Speaker terminals are short-circuited.

• Blocked ventilation holes resulting in too

high operating temperature.

• The unit is operating at continuous high

power conditions and/or inadequate

ventilation.

• 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.

12 ~ 14

4, 5

Sound produced only from one channel.

• Incomplete connection of speaker cords.

• Incomplete connection of input/output

cords.

• Connect securely.

12 ~ 14

6 ~ 15

The on screen display is not displayed.

• “On screen display” is set to off on the

system setup menu screen.

• Set “on screen display” on the system

setup menu screen to on.

29, 30

Positions of instruments reversed during

stereo playback.

• Reverse connections of left and right

speakers or left and right input/output

cords.

• Check left and right connections.

12 ~ 14

Humming noise produced when record is

playing.

• Ground wire of turntable not connected

properly.

• Incomplete PHONO jack connection.

• TV or radio transmission antenna nearby.

• Connect securely.

• Contact your store of purchase.

—

Howling noise produced when volume is

high.

• Turntable and speaker systems too close

together.

• Floor is unstable and vibrates easily.

• 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).

—

Sound is distorted.

• Stylus pressure too weak.

• Dust or dirt on stylus.

• Cartridge defective.

• Apply proper stylus pressure.

• Check stylus.

• Replace cartridge.

—

Volume is weak. • MC cartridge being used.

• Replace with MM cartridge or use a head

amplifier or step-up transformer.

This unit does not operate properly when

remote control unit is used.

• Batteries dead.

• Remote control unit too far from this unit.

• Obstacle between this unit and remote

control unit.

• Different button is being pressed.

• < and > ends of battery inserted in reverse.

• Replace with new batteries.

• Move closer.

• Remove obstacle.

• Press the proper button.

• Insert batteries properly.

—

Common problems arising when listening to the CD, records, tapes, and FM broadcasts, etc.When playing recordsRemote control unit.

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Denon AVR-4800 Operations Instructions Page 60

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