When I look at an init patch, all parts are assigned to their respective faders except for part 4.

Your attachment isn't visible - you will need to describe what you are doing.

I'm not aware of any 'Init' that has a part 4 - is this a custom performance? If a preset then tell us which one you are using.

I can't seem to figure out how to assign part 4 volume to the equivalent fader.

Bad Mister covers the possibilities in this thread
https://www.yamahasynth.com/forum/can-t-add-destination-in-motion-sequence#reply-122383

See where he says this:

When you can’t add a Destination in the Control Assign area it is because they are all occupied.

Also consider that whether faders are used for parts or elements/operators depends on whether a part is selected or the performance itself.

Have you reviewed ALL of the control assignments for the performance and every part?

Please provide more detail about your performance and config.

Sliders (faders) do not have exclusive control over Part volume. These other entities which also have the ability to modulate Part volume can impact how the slider can itself impact volume up to the point of apparently "disabling" the faders.

The Control Assign(ments) would be where to look for competing volume controls.

There are other possibilities too such as Vol/Exp receive switched off. Or mute. Or keyboard control. Or XA (as in [ASSIGN 1&2] buttons disabling elements). Or LFOs pegging amplitude. Or AEG not allowing sound to be audible. Or aggressive filtering squelching the signal.

It would be your task to inspect the Part that's not working how you would prefer and discover what's impacting the slider's effectiveness.

Also, it's worth mentioning that sliders cannot be assigned to any function. They are "hard coded" to do specific things depending on the "mode" of the keyboard. Meaning if you have a single Part selected then the sliders will impact the volume of elements 1-8 of that selected Part. If no Part is selected then they will impact Parts 1-16.

There are no provisions to change the way sliders work. It would have been cool to allow sliders to be a source controller to allow for inverting the sliders for organs - but that's not available.

[quotePost id=122598]

There are other possibilities too such as Vol/Exp receive switched off.[/quotePost]

Thanks! Vol/Exp receive was switched off.

After switching it back on, the fader worked again.

Thanks! Vol/Exp receive was switched off.

After switching it back on, the fader worked again.

Then you must not have told us what the REAL problem was that you had.

This is what you said:

I can't seem to figure out how to assign part 4 volume to the equivalent fader.

When I look at an init patch, all parts are assigned to their respective faders except for part 4.

The Vol/Exp switch has NOTHING to do with control assignments. Whether it is ON or OFF won't stop you from making an assignment.

So if turning it ON solved your problem then your problem was NOT about figuring out 'how to assign part 4 volume to the equivalent fader'.

What the Vol/Exp switch WILL do (if OFF) is prevent a control from changing the volume/expression value.

While this is fresh in your mind I suggest you test this so you understand what the VolExp switch does.

1. Init Normal (AWM2)
2. Edit the common part
3. Go to the Mod/Control -> Receive Sw page
4. play a note repeatedly while you move Fader 1 up and down
5. notice how the volume changes
6. Turn the Vol/Exp switch to OFF (it defaults ON)
7. play a note repeatedly whilel you move Fader 1 up and down
8. notice how the volume NEVER changes
9. also note that the volume is displayed in parentheses like '(46)' instead of '46'

The Vol/Exp switch has NOTHING to do with faders or control assignments

For a new INIT (awm2, fm-x, drum, gm) the default value is ON

So if your Vol/Exp switch was off there are only TWO possibilities

1. you turned the switch OFF for the part
2. you added, or are editing, a part in a preset or library that someone else created and THEY turned the switch OFF.

One lesson to learn is to ALWAYS examine any preset/library performance and parts for things like this so you don't get blind-sided.

For sure - it is a HUGE pain in the butt to manually check everything. And it is easy to miss something like this.

But you now know how HARD it can be to find out what is wrong after the fact.

I am NOT picking on you. Just trying to remind you, and others, that you ALWAYS have to keep your eyes open for things like this.

Be glad there are people like Jason and Bad Mister that can help you out. Makes me nervous to think about who we will ask for help wih the new instrument coming out in October!