Then it is unlikely to be simple in any way.
That's being very kind.
Your machine APPEARS to be a rebadged Saeco Aroma - see here for a parts breakdown - http://www.partsguru.com/user/AROMA%20SIN%20015%20Aroma%20MANUAL%20.pdf . It is a nice machine, easy to work on. One part that has given a little grief from my memory is the check valve assembly (items 36,37,38).



