Panasonic TH-42LFE6E Operating Instructions Manual

Also see for TH-42LFE6E: Operating instructions Service manual

Contents

Panasonic TH-42LFE6E Operating Instructions Manual Manual pdf 52 page image

5252TroubleshootingBefore you call for service, determine the symptoms and make a few simple checks as shown below.Symptoms ChecksPicture SoundInterference Noisy SoundElectrical AppliancesCars / MotorcyclesFluorescent lightNormal Picture No Sound Volume(Check whether the mute function has been activated on the remote control.)No Picture No SoundNot plugged into AC outletNot switched onPICTURE 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 format, or frequency is input, only the input terminalindication is displayed.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 fluorescent light.Check whether the remote control designed specifically for use with the unit is being used. (Theunit 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 undergoingvery slight contractions in response to changes in the room temperature. There are noadverse effects on the performance or other aspects.The top or bottom of the picture on the screen is cutoff when I use the zoom function.Adjust the position of the picture on the screen.Areas at the top and bottom of the screen wherethe image is missing appear when I use the zoomfunction.When using a video software program (such as a cinema size program) with a screenwider than one in the 16:9 mode, blank areas separate from the images are formed at thetop 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, thesetemperature rises will not pose any problems in terms of performance or quality.Power automatically turns off unexpectedly. Check the settings of “No Signal power off”, “PC Power management”, “DVI-D Powermanagement” and “No activity power off”. Any of them may be set to “On (Enable)”.(see page 30, 31)There is no picture displayed or sound outputsometimes.When HDMI or DVI signals are input to the Display using a selector or distributor, sound orimages may not be output in the normal fashion depending on the selector or distributor used.The symptoms may be improved by turning the power off and on again, or by replacingthe selector or distributor.The RS232C is uncontrollable Check whether the connection has been made properly. (see page 12) When controllingthe RS232C command on page 12 from the RS232C terminal in the display, make surethat “Control I/F Select” is “RS-232C”. (see page 40)The LAN is uncontrollable Check whether the connection has been made properly. (see page 45) Check whether“Control I/F Select” is “LAN” when controlling with the WEB browser control or the commandcontrol on page 46. (see page 40) Check whether “LAN Setup” has been configured properly.(see page 41) When connecting to a device of AMX, Crestron Electronics, Inc., set “AMXD.D.”, “Crestron Connected™”, according to the device to use. (see page 40)This LCD Display uses special image processing. Hence a slight time lag may occur between image and audio, depending on the type of inputsignal. However, this is not a malfunction.LCD Display panelSymptoms CheckThe screen darkens slightly when bright pictures withminimal movements are shown.The screen will darken slightly when photos, still images of a computer or other pictures withminimal movements are shown for an extended period. This is done to reduce image retentionon the screen and the shortening of the screen’s service life: It is normal and not indicative ofmalfunctioning.It takes a while for the picture to appear. The unit digitally processes the various signals in order to reproduce esthetically pleasingimages. As such, it sometimes takes a few moments for the picture to appear when thepower has been turned on, when the input has been switched.The edges of the images flicker. Due to the characteristics of the system used to drive the panel, the edges may appearto flicker in the fast-moving parts of the images: This is normal and not indicative ofmalfunctioning.There may be red spots, blue spots, green spots andblack spots on the screen.This is a characteristic of liquid crystal panels and is not a problem. The liquid crystal panelis built with very high precision technology giving you fine picture details. Occasionally,a few non-active pixels may appear on the screen as fixed points of red, blue, green, orblack. Please note this does not affect the performance of your LCD.Image retention appearsImage retention may occur. If you display a still picture for an extended period, the imagemight remain on the screen. However, it will disappear after a while. This is not consideredas malfunction.