Service manual

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In other words, the image sticking is defined as follows: when the same pattern(of the fixed display)is
displayed for a long times, a difference in brightness is caused around the lighting area and non-lighting
n brightness in the pattern shown shorty before
2) S in brightness
The life of brightness, defined as the reduction to half the initial level, is more than 25 thousand hours on
ot a guarantee value for life and brightness. It should be recognized simply as
3) W
Image sticking and faults in brightness and picture elements are excluded from the warranty objects.
A major possible cause of deterioration in brightness is damage in the fluorescent substance due to
t the time of plasma discharges.
5) P
The relationship between intergrated lighting time and brightness in this plasma module is described in
ar, the deterioration in brightness tends to be accelerated up to 100
6) P easures taken to relieve image sticking
So long as there is the reduction of brightness in the fluorescent substance, it is impossible to the avoid
image sticking ,we offer you a method of entering an
cause of difference in brightness reduction among the cells. Even when the fixed
ever, there occurs a substantial imbalance
tween the lighting and non-lighting areas, this causing a difference in brightness as a result. In this
consider that it is essential to take the suitable measures in consideration of the customer’s
perating environment.
y.
area due to deterioration in the fluorescent substance.
When the present pattern is changed over to another one, the boundary comes to be seen between the
lighting area and non-lighting area due to difference i
changeover. If this conditions is accumulated, the boundary or image sticking comes to be seen with the
naked eyes.
ecular change
average.
Conditions: All white (100% white) input at an ambient temperature of 25℃.
However, this lifetime is n
the data for refernce.
arrenty
4) Cause of deterioration in brightness
impact caused by ions generated a
ractical value for Image sticking
the attached material. In particul
hours in the initial period. In the initial period, the fixed display of patterns particularly tends to cause
image sticking. The practical value for image sticking is difficult in concrete numerals. As described
below, you are advised to take proper measures to make the occurrence of image sticking as slow
possible.
roposed m
the occurrence of image sticking .Therefore, to relieve
image input that may ensure reluctance to the generation of the difference in brightness reduction among
the displayed dots.
The images from TV broadcasting involve a high rate of motion picture displays. Therefore, there is less
change of being a
patterns are displayed, they generally last for a few minutes. Since the same pattern is less liable to be
displayed, there is almost no influence toward image sticking.
If the fixed patterns tend to be displayed for a long time, how
be
document , we offer you some proposals of installation, paying attentions to the two points: the reduction of
difference of brightness achieved by intergrated lighting time leveling and the method of edge smearing to
make image sticking hard to be discerned.
The result from these proposals can, however, greatly depend on the contents of images and operating
environment.
Therefore, we
o
Example of Poposal 1: The display position is moved while the fixed display pattern is changed over, or it is
scrolled during the displa
Example of Proposal 2: If possible, a pattern of complementary color is incorporated (for intergrated time
leveling).
Example of Proposal 3: The fixed pattern and the motion picture display are reciprocally exchanged, in
BSV-4251/4251A RD(1) 00 03/1 0/23 64/75
SERVICE MANUAL (BSV-4251 BSV-4251A )