i have borrowed a vcr ( the above ) to copy some old tapes onto CD.. first time i tried to use it i got request for 4 digit security code.. which ididnt know then.. i do now.. but i cant get back to that screen again.. ( i dont have manual ) just a screen saying the thing is security protected and name of owner , but cant get back to screen to input code .. which i now know .... any help please ??????