Hitachi 42PD8800TA user manual About Plasma Display, Image Retention of Plasma Display

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[Fig. a]
[Fig. A]

ABOUT PLASMA DISPLAY

Image Retention of Plasma Display

The plasma display has one of characteristics that results in panel image retention depending on how the plasma display is used. The following are the common cases and effective usages regarding the image retention.

Characteristics of Image Retention

The phenomenon of image retention is caused by partially degrading the phosphor due to the partial display of character and fi gure.

For example, when the character image as shown in Fig. A is displayed continuously for a long period of time, only the phosphors (Red/Green/ Blue) displaying the characters is degraded. Consequently, in case of displaying all white image on the entire screen as shown in Fig. a, the marks remaining by the characters will give color differences; therefore, note that it is not burnt remains of the phosphor.

The degree of image retention is proportional to the Brightness

 

 

and Display Time for the characters and/or fi gures.

 

 

The brighter the characters and fi gure, the more phosphor is

 

 

degraded. As shown in Fig. B, in case of displaying images that

 

 

have different brightness each for a long time, Fig. b shows that

 

 

the brighter image tends to obtain more remains.

[Fig. B]

[Fig. b]

 

*The illustrations are images to explain the image retention. The actual manners on the image retention vary depending on such conditions as operation time and brightness.

Method to Reduce Image Retention

Use “Screen Wipe” or “Luminance Manager” function on the display, which are available from Function Menu. (Refer to 27 ~ 28 .)

After displaying certain images such as still image for a long time, “Screen Wipe” can be used to reduce the image retention by displaying a completely white screen for about 1~2 hours. In addition, “Luminance Manager” function works in case of displaying such images on the four corners as TV station logos and clock display.

Use in combination with moving images.

Since the entire screen has relatively even degradation of the phosphor in moving images, it can avoid the partial image retention. We recommend to use together with such moving images as DVD.

Please be careful that leaving the images in 2-picture mode for a long period of time can cause the image retention. Some television broadcasts contain images of which cut the left/right or top/bottom, and which broadcast station or clock is displayed for a long time at the same position. Please be aware that it may cause the image retention. Image retention can be reduced by “Eco Mode” in Function menu. 27

Common phenomena of Plasma Display Panel

The following are the common phenomena when operating Plasma Display Panel due to its structural reason. Please note that they are not malfunctions.

Residual image

When a still image or menu is displayed on the screen for a short time (about a minute) and then switches to another image, it may leave an “after-image” on the screen.

The residual image will disappear on its own.

Surface on Panel

The plasma panel displays images by generating discharges internally. This could raise the temperature of the display surface. In addition, do not impact strongly on the surface of panel because plasma panel is fi ne-processing glass even though the panel strengthens by the front fi lter made of tempered glass.

Defective Spots on Panel

The plasma display panel is manufactured with high-precision technology. However, there might be some spots that are not emitted, brighter than the others, or in different colors, etc.

7

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Contents Model Name 42PD8800TA 55PD8800TA Color Plasma DisplayContents Important Safety InstructionsIntroduction About This ManualTrademark Credits About SoftwareSafety Precautions About the SymbolsSafety Precautions Do not expose this unit to rain or moistureDo not place the unit at the dusty place Precautions Cleaning and MaintenanceCharacteristics of Image Retention About Plasma DisplayImage Retention of Plasma Display Common phenomena of Plasma Display PanelOption FeaturesSupplied Accessories Component Names Main UnitFront Panel Rear PanelComponent Names Remote Control Remote Control Batteries Installation Open the battery compartment coverInstall the batteries Close the battery compartment coverPreparation Safety Precaution on Main Unit Installation Anti-Tumble MeasuresTerminal Positions Connecting ProcedureConnection Example Connection Connecting ProcedureConnecting to External Equipment Terminals on Rear Information Terminals on Side Connecting the plug into the wall socket Information How to secure the cablesHow to fasten the band To tightenPower On/Off To turn On the power of the unitTo turn Off the power of the unit Basic OperationBasic Operation First Time Setup Volume UP/DOWNVolume Up button Volume IndicatorBasic Operation Input Switching to TV/AV1~5, HDMI, and RGB Input Signal Screen DisplayHow to use the On-Screen Display OSD system How to set LanguageMenu Operation Language MenuMenu Operation Setup Menu TV mode Selected Items Setup hintAuto Tuning Manual TuningFine Tuning SortTeletext Language Auto OffMenu Operation Setup Menu AV mode SystemColor VideoMenu Operation Setup Menu RGB mode Wxga Mode Frequency ModeInput Level Frequency DisplayMenu Operation Function Menu Selected Items Setup hint Luminance Manager Slide ModePicture Size BackgroundMenu Operation Picture Menu TV/AV mode Contrast Mode Film Mode3D Comb Filter Black EnhancementColor Decoding Color Temp. AdjustColor Management Menu Operation Picture Menu RGB mode Picture EnhancementBy pressing OK button Menu Operation Audio Menu Timer Menu Headphone VolumeOff Timer On TimerPower Swivel FunctionFunction About Teletext What is TeletextHow to operate the Teletext Function Size Switching TV/AV signal inputPosition Adjustment Vertical Size Adjustment at Panoramic ModeTV/AV signal input Using a wide-screen monitor RGB signal inputFunction Multi Picture Mode Picture modeThis function is not available in Hdmi input Table Mix-and -Match of the Input ModesPicture Picture TV mode only Function Multi Picture Mode Activate the Multi Picture Mode in RGB Mode Strobe Function Picture FreezingSplit Right Side Function Photo Input FunctionOperating the Photo Input Rotation Function Move to nextPhoto Index 2 nd Full size File#23 is displayedDisplaying Still Picture in Photo Mode Slide Show Function Slide Show Adjustment Function Menu Selection DescriptionWith remote control After completing allMovie files, it To the Index. *4Other To exit from Photo Input…OSD Information SpecificationFunction Photo Input Function Function Audio Switching Nicam / Sound Multiplexincluding A2 TV modeNicam signal received Bilingual/Dual Sound broadcastFunction Power Save Mode When AV input is selectedWhen the RGB input is selected Returning to operating statusSet up hint Function DVD Player / STB SelectionDVD Selection SAT SelectionSymptom and Check List TroubleshootingWhen Following Messages Appear on the Screen Troubleshooting Symptom and Check List 41 ~Characters are blurred Product Specifications Input signalsProduct Specifications Signal Input RGB terminal D-sub 15-pin connectorInput connector pin specifications Photo-input connector pin specificationsWith RGB input Product Specifications Recommended Signal ListWith Hdmi input With Picture Freezing Function Product Specification Recommended Signal ListWith Multi Picture Function QR65402
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