Prima PH50D8, Service Manual

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should cause glass breakage that may get people injured. Two people are needed in
cooperation to move this module lest contingency takes place.
9). The complete TV set is designed on the basis of full consideration of thermal dissipation by
convection, with the round hole on the top for heat emission. To avoid overheat, please do
not have any covering on the hole during normal operation and never put it in the place
where the space is narrow and in bad ventilation.
10). There are quite a number of circuits in PDP that are integrated ones. Please be on guard
against static electricity. During maintenance operation be sure to cover yourself with
anti-static bag and before operation make sure to have it sufficiently grounded.
11). There are a big number of connection wires distributed around the screen. Please take care
not to touch or scuff them during maintenance or removing the screen, because
once they are damaged the screen will fail to work and it’s not possible to repair it.
12). Connector for the circuit board of the screen part is relatively fine and delicate. Please take
care in the replacement operation lest it should get damaged.
13). Special care must be taken during transportation and handling because strenuous vibration
could lead to screen glass breakage or damage on the driving circuitry. Be sure to use a
strong outer case to pack it up before transportation or handling.
14). Please put it for storage in an environment in which the conditions are under control so as to
prevent the temperature and humidity from exceeding the scope stipulated in the
specification. For prolonged storage please cover it with anti-moisture bag and have them
piled and stored in one place. The environmental conditions are tabulated as below:
Temperature
Scope for operation
0
～
50centigrade
Scope for storage -15
～
60centigrade
Humidity
Scope for operation
20%
～
80%
Scope for storage 20%
～
80%
15). If a fixed picture is displayed for a long time, difference in its brightness and color may occur
compared with movable pictures. But it doesn’t show any problem and the reason is that
there is reduced density of fluorescent powder in the former. On the other hand, even if
changes take place in the picture, it can keep its brightness for
a period of time (several minutes). It’s a feature inherent with plasma and it’s not abnormal.
However please try as much as possible to avoid showing a still picture of high brightness for
a long time during operation.
16). As a digitalized display devise, this module is provided with error diffusion technology and the