Sony BRAVIA XBR-77A1E Manuel De Référence page 21

The parental lock for broadcast password
has been forgotten.

Enter 4357 for the password and select
[Change PIN].
The restricted profile password has been
forgotten.

Perform the force factory data reset. Refer to
"How to reset the TV to factory settings"
(page 20).
The TV and its surroundings become
warm.

When the TV is used for an extended period
of time, the TV and its surroundings may
become warm to the touch. This is not a
malfunction of the TV.
The screen becomes darker while
watching TV.

If the whole image or part of the image
remains still, the screen brightness will be
gradually reduced to prevent image
retention. This is not a malfunction of the TV.
You are concerned about image
retention.

If the same image is displayed repeatedly or
for long periods of time, image retention
may occur. You can manually perform a
Panel refresh to reduce image retention.
Note
• Perform Panel refresh only when image
retention is particularly noticeable. As a
reference, perform it only once a year. Avoid
performing it more than once a year because it
may affect the usable life of the panel.
• Images that include clocks, logos and bright
colors (including white) easily cause image
retention. Avoid displaying these types of
images for long periods of time, otherwise
image retention may occur.
A white line appears on the screen.

Panel refresh automatically runs after the TV
has been used for long periods of time to
reduce image retention. Panel refresh starts
after the TV is turned off and takes about
one hour to complete. A white line may be
displayed on the screen during the Panel
refresh. This is not a malfunction of the TV.
The message [Panel refresh did not
finish...] is displayed.
Panel refresh automatically runs after the
TV has been used for long periods of time
to reduce image retention. If the TV is
turned on, the AC power cord is unplugged,
or the room temperature falls outside of the
range between 50 ºF and 104 ºF (10 ºC and
40 ºC) during the Panel refresh, the process
will not be completed and this message will
appear.

If Panel refresh started automatically, it will
restart when you turn off the TV with the
remote control.

If Panel refresh initiated manually, you must
select it again.
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