Sanyo PID-42NE1 Operations Instructions download pdf (Page 43)

Troubleshooting

Beforeyoucallforservice,determinethesymptomsandmakeafewsimplechecksasshownbelow.

Symptoms

Checks

Picture Sound

Interference NoisySound

ElectricalAppliances

Cars/Motorcycles

Fluorescentlight

NormalPicture NoSound

Volume

(Checkwhetherthemutefunctionhasbeenactivatedontheremotecontrol.)

NoPicture NoSound

NotpluggedintoACoutlet

Notswitchedon

PictureandBrightness/Volumesetting

(Checkbypressingthepowerswitchorstand-bybuttonontheremotecontrol.)

NoPicture NormalSound

Ifasignalwithanon-applicablecoloursystemformat,orfrequencyisinput,only

the input terminal indication is displayed.

NoColour NormalSound

Colourcontrolssetatminimumlevel

(seepage24,25)

Coloursystem(seepage38)

Noremotecontroloperationscanbeperformed. Checkwhetherthebatterieshavedischargedcompletelyand,iftheyhavenot,

whethertheywereinsertedproperly.

Checkwhethertheremotecontrolsensorisexposedtoanoutdoorlightora

stronguorescentlight.

Checkwhethertheremotecontroldesignedspecicallyforusewiththeunitis

beingused.(Theunitcannotbeoperatedbyanyotherremotecontrol.)

Acrackingsoundissometimesheardfromtheunit.

Ifthereisnothingwrongwiththepictureorsound,thisisthesoundofthecabinet

undergoingveryslightcontractionsinresponsetochangesintheroomtemperature.

Therearenoadverseeffectsontheperformanceorotheraspects.

Thetoporbottomofthepictureonthescreeniscut

offwhenIusethezoomfunction.

Adjustthepositionofthepictureonthescreen.

Areas at the top and bottom of the screen where

theimage is missing appearwhen Iuse thezoom

function.

Whenusingavideosoftwareprogram(suchasacinemasizeprogram)witha

screenwiderthanoneinthe16:9mode,blankareasseparatefromtheimages

are formed at the top and bottom of the screen.

Icanhearsoundscomingfrominsidetheunit. Whenthepoweristurnedon,asoundofthedisplaypanelbeingdrivenmaybe

heard:Thisisnormalandnotindicativeofmalfunctioning.

Parts of the unit become hot. Evenwhenthetemperatureofpartsofthefront,topandrearpanelshasrisen,

thesetemperatureriseswillnotposeanyproblemsintermsofperformanceor

quality.

Powerautomaticallyturnsoffunexpectedly.

Checkthesettingsof“Powermanagement”and“Autopoweroff”intheSetupmenu.

Anyofthemmaybesetto“On”.(seepage31)

ThisLCDDisplayusesspecialimageprocessing.Henceaslighttimelagmayoccurbetweenimageandaudio,dependingonthetype

ofinputsignal.However,thisisnotamalfunction.

LCD Display panel

Symptoms Check

The screen darkens slightly

whenbrightpictureswithminimal

movementsareshown.

Thescreenwilldarkenslightlywhenphotos,stillimagesofacomputerorotherpictureswithminimal

movementsareshownforanextendedperiod.Thisisdonetoreduceimageretentiononthescreen

andtheshorteningofthescreen’sservicelife:Itisnormalandnotindicativeofmalfunctioning.

Ittakesawhileforthepicture

to appear.

Theunitdigitallyprocessesthevarioussignalsinordertoreproduceestheticallypleasingimages.As

such,itsometimestakesafewmomentsforthepicturetoappearwhenthepowerhasbeenturned

on,whentheinputhasbeenswitched.

Theedgesoftheimagesicker.

Duetothecharacteristicsofthesystemusedtodrivethepanel,theedgesmayappeartoickerin

thefast-movingpartsoftheimages:Thisisnormalandnotindicativeofmalfunctioning.

Theremayberedspots,blue

spots,greenspotsandblack

spots on the screen.

Thisisacharacteristicofliquidcrystalpanelsandisnotaproblem.Theliquidcrystalpanelisbuilt

withveryhighprecisiontechnologygivingyounepicturedetails.Occasionally,afewnon-active

pixelsmayappearonthescreenasxedpointsofred,blue,green,orblack.Pleasenotethisdoes

notaffecttheperformanceofyourLCD.

Imageretentionappears

Imageretentionmayoccur.Ifyoudisplayastillpictureforanextendedperiod,theimagemightremain

onthescreen.However,itwilldisappearafterawhile.Thisisnotconsideredasmalfunction.

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Sanyo PID-42NE1 Operations Instructions Page 43

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