Pioneer code,then what?

[midas dude]

Battery got disconnected,therefore need to enter code,which ive done,but no use.
Im sure i need to enter this code,then follow by holding another button,but which one?
Any help gratefully accepted,AL

[Big Al.]

Might be worth giving Carl a ring

www.tvruk.tv/

[rfisher]

Think it's the menu button isn't it?

Might be totally wrong mind you.