Panasonic TH-42LF5E Operating Instructions And Owner's Manual page 26

Screensaver
Do not display a still picture, especially in 4:3 mode, for any length of time.
If the display must remain on, a Screensaver should be used.
When the screen saver is operating, the following 5 patterns are displayed full screen for 5 seconds each.
Black Dark Gray Gray Light Gray White
1
2
Mode selection
3
Start setting
4
26
(For preventing image retention)
Press to display the Setup menu.
Press to select Screensaver.
Press to display Screensaver menu.
Press to select Mode.
Press to select each
mode items.
When the Mode is set to On, press to select Start.
Press to start Screensaver.
The menu screen will disappear and the Screensaver will be activated. To stop the
Screensaver under On, press the R button or any buttons on the main unit.
Note: When the display is turned off, the Scrensaver will be deactivated.
Off
Interval : Operates when Periodic Time and Operating
Time are setup and those times arrive.
Standby after SCR Saver : Operates while Screensaver duration, and
display enters standby mode.
On : Operates when Start is selected and the
ACTION ( ) button is pressed.
Setup 1/2
Signal
Screensaver
Input label
ECO Mode settings
Wobbling Off
Component/RGB-in select
RGB
No activity power off
Disable
English ( UK )
OSD Language
Screensaver
Start
Off
Mode