Panasonic H-37PWD7UY - Manual (Page 39)

39
The front of the display panel has been specially treated. Wipe the panel surface gently using only a cleaning
cloth or a soft, lint-free cloth.
• If the surface is particularly dirty, wipe with a soft, lint-free cloth which has been soaked in pure water or water to which
a small amount of neutral detergent has been added, and then wipe it evenly with a dry cloth of the same type until the
surface is dry.
• Do not scratch or hit the surface of the panel with fingernails or other hard objects, otherwise the surface may become
damaged. Furthermore, avoid contact with volatile substances such as insect sprays, solvents and thinner, otherwise
the quality of the surface may be adversely affected.
If the cabinet becomes dirty, wipe it with a soft, dry cloth.
• If the cabinet is particularly dirty, soak the cloth in water to which a small amount of neutral detergent has been added
and then wring the cloth dry. Use this cloth to wipe the cabinet, and then wipe it dry with a dry cloth.
• Do not allow any detergent to come into direct contact with the surface of the Plasma Display. If water droplets get
inside the unit, operating problems may result.
• Avoid contact with volatile substances such as insect sprays, solvents and thinner, otherwise the quality of the cabinet
surface may be adversely affected or the coating may peel off. Furthermore, do not leave it for long periods in contact
with articles made from rubber or PVC.
Maintenance
Symptoms
The screen darkens slightly
when bright pictures with
minimal movements are shown.
It takes a while for the picture
to appear.
The edges of the images flicker.
The brightness on both sides of
i m a g e s i n t h e 4 : 3 m o d e
changes.
Some parts of the screen do not
light up.
After-images appear
[for TH-42PHD7UY, TH-50PHD7UY]
Whirring sounds can be heard
from the display unit.
Plasma Display panel
Check
The screen will darken slightly when photos, still images of a computer or other pictures
with minimal movements are shown for an extended period. This is done to reduce
after-image on the screen and the shortening of the screen’s service life: It is normal
and not indicative of malfunctioning.
The unit digitally processes the various signals in order to reproduce esthetically
pleasing images. As such, it sometimes takes a few moments for the picture to appear
when the power has been turned on, when the input has been switched or when the
images for the main picture and sub picture on the two screens are swapped.
Due to the characteristics of the system used to drive the panel, the edges may appear
to flicker in the fast-moving parts of the images: This is normal and not indicative of
malfunctioning.
When viewing the side panels at the “BRIGHT” or “MID” setting, the brightness on
both sides may change depending on the kind of program shown: This is normal and
not indicative of malfunctioning.
The plasma display panel is manufactured using an extremely high level of precision
technology, however, sometimes some parts of the screen may be missing picture
elements or have luminous spots. This is not a malfunction.
Do not allow a still picture to be displayed for an extended period, as this can cause a
permanent after-image to remain on the Plasma Display.
Examples of still pictures include logos, video games, computer images, teletext and
images displayed in 4:3 mode.
Note:
The permanent after-image on the Plasma Display resulting from fixed image use is
not an operating defect and as such is not covered by the Warranty.
This product is not designed to display fixed images for extended periods of time.
The display unit is fitted with a cooling fan to dissipate heat generated during normal
use. The whirring sound is caused by rotation of the fan and is not a malfunction.
Troubleshooting / Maintenance