Hitachi 42PMA300A Image Retention of Plasma Display, About screen defects, About residual images

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IMAGE RETENTION OF PLASMA DISPLAY

There are different characteristics that result in panel image retention depending on how the plasma display is used. Situations and effective usage methods related to ghosting are provided below.

Image retention characteristics of a plasma display

The image retention phenomenon of a plasma panel occurs due to partial phosphor degradation arising from partial character and figure display.

For example, when the character image as shown in Fig. A at the right is

 

 

continuously displayed for a long period of time, the only part of the phosphor

 

 

(Red,Green, Blue) that will degrade will be the color of the applicable character

 

 

display portion. Consequently, when a white image is displayed on the entire

 

 

screen as shown in Fig. a, the character marks displayed up to that time will

 

 

become a color difference visible to the eye, but the phosphor will never burn.

Fig. A

Fig. a

 

The degree of image retention is proportional to the brightness of the characters and figures displayed as well as the display time.

• The tendency of the phosphor is to degrade more the brighter the characters and figures are displayed. When images of figures with different levels of brightness, as shown in Fig. B, are continuously displayed for a long period of

time, it becomes easier for image marks at locations when the brighter figures are displayed to be noticeable.

Fig. B

Fig. b

The image retention images in this document are exaggerated for the purpose of explanation. The actual manner in which the image retention is seen differs depending on the operation time and brightness.

Methods to Reduce the Occurrence of Image Retention

Lower the Contrast and Brightness settings of the plasma display as much as possible.

A function is provided in the display that controls the brightness of the screen to reduce degradation of the panel. Using this function makes it possible to reduce image retention.

(Refer to Panel Life (Extend 1.or Extend 2 shown on )

Set the plasma monitor to an “Screen Wipe” or “Inverse” display.

The occurrence of image retention when displaying images of identical patterns, such as static images, for long periods of time can be reduced by displaying a reversed color or completely white screen for about 1 ~ 2 hours after terminating the display.

(Settings can be made using Screen Wipe and Inverse of Function MENU shown on )

Using in combination with moving images

Since the degradation of the fluorescent material progresses comparatively uniform for moving images, the occurrence of partial image retention can be controlled. We recommend to use in combination with moving images such as a DVD.

*Please be careful since image retention will occur if display is left in a two screen display state for a long period of time.

*Television broadcasts include images displayed for long periods of time in which the left and right or top and bottom of the image are cut and broadcast station name or time are displayed for a long period of time at the same portion of the screen. Image retention in these portions can be expected to occur, so please be aware.

ENGLISH

NOTES

About screen defects

High precision technology is used in the making of plasma panels but there may be dark spots (points that do not illuminate) and bright spots (points that are too bright) in some cases. These do not indicate a malfunction.

About residual images

In some cases, residual images may remain after the short-term display of still images and another image is displayed, but these will disappear and return to normalcy. This is not a malfunction.

About the panel screen

Plasma displays display images by means of electrical discharges inside the panel. Because of this, the temperature of the panel surface may rise in some cases.Also, plasma displays are made of finely processed glass. A reinforced glass filter is installed over the panel surface but avoid strong impact because there is still danger of glass breakage.

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Contents 42PMA300A Features Contents About the Symbols Safety InstructionsBe careful in handling the battery of the remote control Be cautious of the power cord connectionBe sure to keep safety ground connection Safety Instructions Set the sound volume at a suitable level Precautions for the cable connectionPrecaution during transportation Do not physically impact the remote controlMain Unit Component NamesLoading Batteries Remote controlHandling the Remote Control Securing to a wall or pillar Installation InstructionsInstallation Anti-tumble measuresMonitor rear panel Connecting to a PCPage Indicating lamp Turning Power On and OffOperating Instructions Status guide will be displayed Operating Instructions Volume AdjustmentInput Switching Audio MuteNormal Full Zoom1 Real* Zoom3 Zoom2 Size SwitchingInput Signal Screen Display Display area selection diagram RGB inputIndependent Operation of Multiple Monitors ID No Using the Menu Screen On-screen display systemAutomatic Adjustment of Screen Position and the Clock Operating InstructionsPicture Menu Audio Menu Timer MenuFunction Menu Setup Menu Automatic Store Other FeaturesLanguage Menu Status Display Action Other Features Signal CheckPower Save Mode When the RGB1, RGB2 input is selectedAbout residual images Image Retention of Plasma DisplayMethods to Reduce the Occurrence of Image Retention About screen defectsSymptoms That Seemingly Appear to be Failures TroubleshootingEnglish Troubleshooting Actions to Correct Abnormal Displays Pin Input signal Product SpecificationsSignal Input RGB terminal D-sub 15-pin connectorDVI terminal DVI-D Product Specifications Signal InputRecommended Signal List With Digital RGB signal input RGB1 inputWith Analog RGB signal input RGB2 input Supplement Optional Video Unit Function Connecting to a Video Imaging DeviceWith RGB component setup AV1 AV2 AV3 RGB2 RGB1 AV4 Display size selection diagramWhen you want to Input signal Display screen RemarksPress Using a wide-screen monitorPictures Split Operating Instructions Displaying Multi PictureYNR LTI Operating Instructions Picture MenuYNR CNRItem is added to the Menu shown Color ManagementMagenta Color DecodingAV4 AV1AV2 AV3 Menu Display Registration condition RGB1Troubleshooting Scart connector pin specifications Input connector pin specificationsWith component input AV1, AV2 and RGB2-component input Product Specifications Recommended Signal ListSignal mode Horizontal Dot clock Remarks With R, G, B Video input AV2 and AV4 input

42PMA300A specifications

The Hitachi 42PMA300A is a high-performance plasma television that was designed to deliver an exceptional viewing experience. Launched in the early 2000s, this model quickly gained popularity due to its impressive picture quality, advanced technology, and user-friendly features. One of the key attractions of the Hitachi 42PMA300A is its 42-inch screen, which offers a generous viewing area, making it suitable for various home entertainment settings.

One of the standout features of the 42PMA300A is its plasma display technology. Plasma screens are known for their deep blacks, vibrant colors, and wide viewing angles, making them ideal for watching movies and sports. The resolution of the display is 852 x 480 pixels, which, while not as high as modern standards, delivers a satisfying picture quality, particularly for standard-definition content.

The 42PMA300A also incorporates Hitachi’s proprietary Image Enhancement technology, which optimizes the displayed image for more accurate color reproduction and improved clarity. This technology works to reduce motion blur and enhances the overall contrast, resulting in a more immersive viewing experience. Additionally, the television supports various aspect ratios, allowing users to enjoy content in both widescreen and standard formats without sacrificing picture quality.

Connectivity is another area where the Hitachi 42PMA300A shines. The television is equipped with multiple input options, including HDMI, component, and composite video inputs. This flexibility makes it easy to connect various devices, such as DVD players, gaming consoles, and cable boxes. The inclusion of a built-in tuner means that users can enjoy over-the-air broadcasts without the need for additional equipment.

In terms of design, the Hitachi 42PMA300A sports a sleek and modern appearance, with a thin bezel that maximizes the screen size while minimizing the footprint. The television can be mounted on a wall or placed on a stand, offering versatility in installation.

Overall, the Hitachi 42PMA300A is a well-rounded plasma television that offers a blend of quality and convenience. With its impressive features, user-friendly design, and advanced technologies, it remains a notable choice for those looking to enhance their home entertainment setup.