Taking a Rowenta DX1900 Apart

Not sure about your model, but newer irons have the screws hidden under snap-on covers. Look for a small cover that may have a slot where you can insert a small screwdriver and lightly pry. Chances are you'll leave marks. They are not made to take apart so there is also a chance you'll break the internal tabs that snap/hold it together. You may be able to super glue them back. There should be a removable coverplate at, or near each end.