7600 external pedal control messing up other effects

You don't say which effects have this problem. A number of effects will have a default external modulator connection ("assign") which may default to the pedal – you should probably check this, and if necessary use a different "assign" for your feedback input.

Look in the UM under "The Concept Behind "Redirection" – External Assigns 1-8 and Trigs 1 & 2" for more info on "assigns."

Sorry- don't understand.

The pedal modulation is global via the "Assigns", so it will control whatever effects that use that "assign." If I understand you, one approach to consider would be to use one of the higher numbered assigns, which are unlikely to be used by any preset, for the pedal, and make sure it is not configured for any of the other ones.

There is nothing more I can add. The 7600  is a complex and sophisticated unit, and you will need to study the User Manual to understand it.

Sorry – we don't have step by step instructions for this sort of thing, and in particular, without having your machine in front of me, it is hard to tell what the issues really are.

A few things to try (in order, as necessary):

1) READ THE MANUAL. If there is any specific thing that you don't understand, please ask.

2) Clear setup. UM p.77.

3) Go to the <external> page (UM p.49) and step through all the "assigns", and set "mode" to OFF.

4) See if the problem occurs (my guess is it won't).

5) Set one of the higher numbered assigns to your pedal. (UM p.49-50)

6) see what happens.

Apologies – my mistake. I was looking at an outdated version of the manual. When I said 49-50, this translates to 80-81 in the manual on the Web Site, and 77 translates to 132.