Denon AVR-486 Operating Instructions Manual

Also see for DHT-486DV: Operating instructions Specifications

Denon AVR-486 Operating Instructions Manual Manual pdf 40 page image

ENGLISHTroubleshootingENGLISH37PageMeasuresCauseSymptomTroubleshootingIf 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 problempersist, there may be a malfunction. Disconnect the power immediately and contact your store ofpurchase.Display not lit andsound not producedwhen POWER switchset to on.• Power supply cord not plugged insecurely.• Check the insertion of the powersupply cord plug.• Turn the power on with the remotecontrol unit after turning thePOWER switch on.67Display lit but soundnot produced.• Speaker cables not securelyconnected.• Improper setting of the INPUTSELECTOR knob.• Volume control set to minimum.• MUTING is on.• Digital signals not input. Digital inputselected.• Connect securely.• Set to a suitable position.• Turn volume up to suitable level.• Switch off MUTING.• Input digital signals or select inputterminals to which digital signalsare being input.518181820Display not lit andpower indicator isflashing rapidly.• Speaker terminals are short-circuited.• The ventilation holes of the set areblocked.• The unit is operating at continuoushigh power conditions and/or withinadequate ventilation.• Switch power off, connectspeakers properly, then switchpower back on.• Turn off the set’s power, thenventilate it well and allow it to cooldown.Once the set has cooled down,turn the power back on.• Turn off the set’s power, thenventilate it well and allow it to cooldown.Once the set has cooled down,turn the power back on.52, 52, 5Sound produced onlyfrom one channel.• Incomplete connection of speakercables.• Incomplete connection of input/output cables.• Connect securely.• Connect securely.55, 6,9~11Positions ofinstruments reversedduring stereo playback.• Reverse connections of left andright speakers or left and rightinput/output cables.• Check left and right connections. 5PageMeasuresCauseSymptomSound is distorted. • Stylus pressure too weak.• Dust or dirt on stylus.• Apply proper stylus pressure.• Check stylus.——This unit does notoperate properly whenremote control unit isused.• Batteries dead.• Remote control unit too far fromthis unit.• Obstacle between this unit andremote control unit.• Different button is being pressed.• < and > ends of batteries insertedin reverse.• Replace with new batteries.• Move closer.• Remove obstacle.• Press the proper button.• Insert batteries properly.333—32 NOTE ON USEHowling noiseproduced whenvolume is high.• Speaker systems too closetogether.• Floor is unstable and vibrateseasily.• Separate as much as possible.• Use cushions to absorb speakervibrations transmitted by floor.——NOTE:• For ordinary speaker systems, we recommend setting the crossover frequency to 80 Hz.When using small speakers, however, setting the crossover frequency to a high frequencymay improve frequency response for frequencies near the crossover frequency.Avoid high temperatures.Allow for sufficient heat dispersionwhen installed in a rack.Handle the power cord carefully.Hold the plug when unplugging thecord.Keep the apparatus free frommoisture, water, and dust.Unplug the power cord when notusing the apparatus for longperiods of time.* (For apparatuses with ventilation holes)Do not obstruct the ventilation holes.Do not let foreign objects into theapparatus.Do not let insecticides, benzene,and thinner come in contact withthe apparatus.Never disassemble or modify theapparatus in any way.