Marek pisze tak:

> Co to za heca z tym zachowaniem po otwarciu obudowy? Do czego
> służy ten tryb pracy "po otwarciu" ?



Why does my VCR shut down or behave strangely when I remove the cover?


There are various sensors in a VCR that are light sensitive - it is not
a safety interlock (though it acts this way in some VCRs) but a result
of the way the tape start and end sensors operate. VHS tapes have a
clear leader and trailer. An LED or light bulb poking up near the
center of the cassette shine towards sensors at either side of the
cassette. When light is detected the VCR assumes that it is at the
appropriate end of the tape and shuts off (or rewinds if in PLAY mode
when it senses the end depending on model).

During servicing, a piece of opaque cardboard or other insulating
material should be placed above the cassette basket if any strange
behavior is detected that was not present with the cover in place.

Not all VCRs are particularly sensitive external illumination.

--
Piotr