Sony Universal Remote - Manual (Page 113)

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Set-up
Product Information
Displays product information of the TV.
Factory Settings
Resets all settings to factory settings except for
the “Favourite” settings and programme preset
data. After completing this process, the initial
set-up screen is displayed. Completing auto
tuning in initial set-up will reset the settings
that are not reset by “Factory Settings”. To retain
the settings, skip the “Auto Tuning”.