Sony Bravia KDL-70R550A Operating Instructions Manual page 30

x Duration
To save power, in the Photo Frame Mode, the TV
can continually playing back for up to 24 hours,
after which it will power off automatically. After
running photo frame mode for 24 hours, not use
this mode for at least one hour, to avoid panel
burn-in.
You can change the setting of the "Duration" in
the "Photo Frame Settings". For details, see
page 48.
To avoid panel burn-in, the position of the photo,
clock and calendar are switched automatically
every hour.
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