Pioneer PDP-505HD Operating Instructions Manual page 57

About the plasma panel's
protection function
The brightness of this display will deteriorate slightly
when an image with little movement such as a
photograph or computer image is continuously displayed
This is caused by the plasma panel's protection function
which detects images with slight movement and
automatically adjusts brightness to p_otect the display,
and is net a malfunction,
This function starts approximately 5 minutes after the
power has been turned on e_ aP:er input has been
switched,
About the self diagnosis mode
Messages appea_ err the bottom of this unit's screen to
indicate operation or connection faults After message
confirmation, check the condition of the unit,
If this message appears
OUT OF RANGE
or
PLEASE CHANGE
RESOLUTION
OR REFRESH RA[E
THERMAL WARNING!
PLEASE SHUT DOWN
Please do this
• A incompatible signal is being
input Check the PC input
signal compatibility chart on
page 56 and change the
output signal setting on the
computer side
• Turn off main power (page 6)
• Has the room temperature
exceeded 40 °C (104 °F) ?
Reduce the room temperature
• If the unit's vents are blocked,
unblock them
CAUTION
Panel sticking and after-image lag
• Displaying the same images such as still images for a
long time may cause aP:el-image lagging,
This may eccul in the following two cases
1,After-image lagging due to remaining electrical load
When image patterns with very high peak luminance a_e
displayed fb_ more than 1 minute, after-image lagging may
occu_ due to the _emaining electric load The after-images
_emaining on the screen will disappear when moving images
are displayed, The time fo_ the afte_qmages to disappear
depends on the luminance of the still images and the time
they had been displayed
2, After-image lagging due to sticking
Avoid displaying the same images continuously over a long
pedod of time with the Plasma Display When images of the
same pattern are displayed continuously fo_several hours or
displayed fb_ a short pedod of time every day, after-images
may remain on the screen due to the sticking of the
fluorescent materials, In this case, these images may
decrease if moving images are displayed aftel them, but
basically they will not disappear