How to fix my 1999 Peugeot 206's digital display?

I have a 1999, T reg Peugeot 206 and the digital radio display unit is faulty. The part number is 9625097880 and is a 4 bulb unit. There are other similar units with exactly the same pin connections and colour but different part numbers. Can I use other part numbers or do I have to use the unit with this exact part number?