Philips DTR 1000 Bedienungsanleitung Seite 33

Note: After this procedure, your PIN code has
also been reset to its factory setting ('0', '0', '0',
'0'), and all "Favourite" lists will be lost.
Note: At first power up of the remote control (or
battery change while pressing a button) the
default factory setting (value 3) is restored.
Note: Keep this code secret to prevent your
children from using it.