Panasonic TH-42XVS30 Operating Instructions Manual

66Troubleshooting ChartSymptomsSome parts of the screendo not light up.An after-image appearsWhirring sounds can beheard from the display unit.Plasma Display panelCheck• The plasma display panel is manufactured using an extremely high level ofprecision technology, however, sometimes some parts of the screen may bemissing picture elements 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 TV.Examples of still pictures include logos, video games, computer images,teletext and images displayed in 4:3 mode.Note:The permanent after-image on the Plasma TV resulting from fixed image use isnot 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.• The TV is fitted with a cooling fan to dissipate heat generated during normaluse. The rotating fan may cause a whirring sound but it is not a malfunction.• The TV slightly consumes power and rotates the cooling fan even whenturned off in order to receive program guide data etc. through the CableCARD. The rotating fan may cause a whirring sound but it is not a malfunction.Page-41, 56--Check the 2 main interconnection cables (24pin and 26pin) rear of PDP and Tuner box.Make sure they are firmly connected. (Loose connection of 24pin will cause no poweron symptom.)Power off both the display and the receiver, and check the cable connection.When turning the unit on, thePDP LED momentarily turnsblue then the unit shuts offand LED turns Red.Occasionally on-screen-m e n u s a p p e a r w h i l econnection cable is notinserted, but these on-screen-menus are noteffective. Remote controlis not accessible to thosemenus.