Panasonic TH-37PWD5UZ Operating Instructions Manual

35TroubleshootingBefore you call for service, determine the symptoms and make a few simple checks as shown below.Plasma Display panelSymptomsSome parts of the screen do notlight up.After-images appearCheckThe plasma display panel is manufactured using an extremely high level of precisiontechnology, however, sometimes some parts of the screen may be missing pictureelements or have luminous spots. This is not a malfunction.Do not allow a still picture to be displayed for an extended period, as this cancause a permanent after-image to remain on the Plasma Display.Examples of still pictures include logos, video games, computer images, teletextand images displayed in 4:3 mode.Note:The permanent after-image on the Plasma Display resulting from fixed image useis not an operating defect and as such is not covered by the Warranty.This product is not designed to display fixed images for extended periods of time.Symptoms ChecksElectrical AppliancesCars/MotorcyclesFluorescent lightVolume(Check whether the mute function has beenactivated on the remote control.)Not plugged into AC outletNot switched onPICTURE and BRIGHTNESS/Volume setting(Check by pressing the power switch orstand-by button on the remote control.)If a signal with a non-applicable color systemformat, or frequency is input, only the inputterminal indication is displayed.Color controls set at minimum level.(see page 28, 29)Color system (see page 33)PictureInterferenceNormal PictureNo PictureNo PictureNo ColorSoundNoisy SoundNo SoundNo SoundNormal SoundNormal Sound