Aficio 2035 with top feeder issues

[NeoMatrix]

Is the ADF the same model as the DF82 on the AF 3228 C?

If they are the same the problem might be in the main turn around idler rollers.
These idlers reach the maximum ware tolerence and don't proved enough down pressure.
They can be modified to increase their life by doing a small filing job on the housing.

[slimslob]

where do I get oem?

Directly from Ricoh or a Ricoh dealer.

[mikadonovan]

What are the steps to troubleshoot?

Sigh. You really need to have a tech look at your machine.

[andrewdecruz]

Based on the limited info, it's difficult to point to any solution. However based on my experience you first need to know how many copies have the copier done. My pick is more to a worned out separation belt, pick up roller or the torque limiter. Good luck though.