on link 1000: press [menu], than use the > arrow to move to AV1, than use the v or ^ to change the option, once it is what you like it to be (like Vtape-1 non B&O) press [play] to store.
If you like you can set AV2 in the same way.
Leave the menu with pressing [TV] and if you press [Vtape] it wil switch to AV1 scart on the back.
If you set AV2 to switch to Vtape-2 non B&O in the menu you'll have to press [shift] than [vtape], but of course you can also set it to other options like the svhs input (which is why the menu-options are there...).