[R-390] filtering on R-390 C101, C103

[Alex Hopper]

Hi Folks,

Later this week I am going to slowly start up an R-390/URR that I recently
purchased.  After careful visual inspection and removal of several of the
modules, I am confident enough to start it slowly on a variac.

My question is, what provides the typical 'filtering' of the rectified DC
voltage?  Is this C101 (the large rectangular metal box capacitor next to
the power supply)?

What does the other large, cylindrical capacitor C103 do?

Are these capacitors failure prone?  Should I expect the need to replace
them?

Thanks,
-Alex