Philips 23HF5474 Anleitung Seite 17

Press the key for approximately 5 seconds. The following text appears:
If the word "LOW" appears instead of "OK", the batteries are low and must be replaced.
Fullscreen
This mode displays images in full screen.
Auto
This TV set is equipped with automatic switching which
will select the correct screen format, provided the specific
signals are transmitted with the programs.
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