Denon AVR-4800 manual Troubleshooting, Are the connections correct ?

15 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

etc.

DISPLAY not lit and sound not produced

• Power cord not plugged in securely.

• Check the insertion of the power cord plug.

6

• Turn the power on with the remote control

39

when power switch set to on.

broadcasts,

unit after turning the POWER switch on.

• Speaker cords not securely connected.

• Connect securely.

12 ~ 14

• Improper position of the audio function

• Set to a suitable position.

40

FM

button.

DISPLAY lit but sound not produced.

• Volume control set to minimum.

• Turn volume up to suitable level.

41

and

• MUTING is on.

• Switch off MUTING.

42

tapes,

• Digital signals not

input

Digital

input

• Input digital signals or select input jacks to

40

selected.

which digital signals are being input.

records,

• Speaker terminals are short-circuited.

• Switch

power

off, connect

speakers

12 ~ 14

properly, then switch power back on.

• Blocked ventilation holes resulting in too

• Turn off the set’s power, then ventilate it

4, 5

CD,

high operating temperature.

well to cool it down.

the

DISPLAY not lit and power indicator is

Once the set is

cooled down,

turn the

flashing rapidly.

power back on.

to

• The unit is operating at continuous high

• Turn off the set’s power, then ventilate it

4, 5

listening

power

conditions

and/or

inadequate

well to cool it down.

ventilation.

Once the set is

cooled down,

turn the

power back on.

when

• Incomplete connection of speaker cords.

• Connect securely.

12 ~ 14

arising

Sound produced only from one channel.

• Incomplete

connection

of

input/output

• Connect securely.

6 ~ 15

cords.

problems

Positions of instruments reversed during

• Reverse

connections

of

left and

right

• Check left and right connections.

12 ~ 14

speakers

or

left and

right

input/output

stereo playback.

cords.

Common

The on screen display is not displayed.

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

• Set “on

screen

display” on the system

29, 30

system setup menu screen.

setup menu screen to on.

• Ground wire of turntable not connected

• Connect securely.

6

Humming noise produced when record is

properly.

playing.

• Incomplete PHONO jack connection.

• Connect securely.

6

• TV or radio transmission antenna nearby.

• Contact your store of purchase.

—

records

• Turntable and speaker systems too close

• Separate as much as possible.

—

together.

Howling noise produced when volume is

• Floor is unstable and vibrates easily.

• Use cushions to absorb speaker vibrations

—

playing

high.

transmitted by floor. If turntable is not

equipped with insulators, use audio

insulators (commonly available).

When

• Stylus pressure too weak.

• Apply proper stylus pressure.

—

Sound is distorted.

• Dust or dirt on stylus.

• Check stylus.

—

• Cartridge defective.

• Replace cartridge.

—

Volume is weak.

• MC cartridge being used.

• Replace with MM cartridge or use a head

6

amplifier or step-up transformer.

unit.

• Batteries dead.

• Replace with new batteries.

31

control

• Remote control unit too far from this unit.

• Move closer.

31

• Remove obstacle.

31

This unit does not operate properly when

• Obstacle

between this

unit

and remote

remote control unit is used.

control unit.

• Press the proper button.

—

Remote

• Different button is being pressed.

• Insert batteries properly.

31

• < and > ends of battery inserted in reverse.

60