Wish you could have recounted what parameters (specifically you checked) and mentioned if you are connected via MIDI to anything.
Press [UTILITY]
Touch "Settings" > "Sound"
Verify Tune parameter

Flick the PB Wheel to make sure it wasn't still receiving a PB command.
Ribbon Controller is also sometimes set to control pitch - make sur nothing is touching it.

Press [UTILITY]
Touch "Settings" > "System"
Touch the *second* box down from the top on the right side of the screen: "Initialize All Settings"

This will reset all Utility Mode global settings... so review them and manually make your selections.

And 10 Hz is a bit confusing unless really low notes are way out of tune and high notes are not really out of tune by much.

10hz on a very low note can be a major 3rd. 10hz near the middle would be closer to a minor second (semitone) and less of an interval (fractional) as the note's fundamental frequency goes higher.

If all notes are off by a semitone or two one thing to do would be hold down shift and see if your octave down button is blinking.

But other advice should "clear out" your settings and get you back to factory including other possibilities.

Mod wheel or ribbon should be reset when you reselect the performance. I take it whatever is happening for you survives switching performances and power cycles although you were not clear.

Also didn't mention if all performances had this issue or only select.

It's roughly 10Hz flat around the middle ranges. Affects the actual pitch differently as you move through the octaves, which leads to the keyboard playing out of tune with itself. The problem does survive power offs, I just spent two hours with the keyboard out of tune. I walk away to get something to eat, having left the keyboard powered on, come back and it's playing in tune again. Crazy! Checked voltage and it's plugged into a consistent 120.9 volts.

Initialize settings doesn't work. Reloading firmware doesn't work. Update to 1.5 doesn't work. Just has a mind of its own. Both samples and FM generated sounds play flat. The factory settings do this as well, not just my own user created performances.

The "Tune" parameter under utility has always been set as they should be. +0.0 440.0Hz

The keyboard is not connected via MIDI to anything. It's all by itself.

strange I think the micro tunings would also get reset with what you've done. As a sanity check I would start to explore if the assignable outputs also suffer from the same pitch issue. I say this because the digital audio stream is grabbed from a different place in the audio path for assignable outs. And then I would also look at the digital outs in other words to USB audio and see if the pitch problem is there because I again that USB audio is grabbed from a different part in the chain. It's always possible you get at the end of the road by checking settings and still there's some pitch issue that is there from an initialization. So at some point there may be a service call required for diagnosis by a Yamaha service technician. Probably starting with a phone call to the 800 number which would at least put this kind of problem on the radar if it is truly a hardware issue. Another easy thing to try is to press the FX icon on top of the touch screen and then set all effects to off.

Hello Hale - ah! Not just me, then! I experience the same thing exactly occasionally, the culprit is usually F3 and F4 (which also plays at a higher volume than the E and G). Another time, no problem. The lower register also seems to be out of tune on many Pfs, but this is something I expect of synthesisers, especially when coupled with less-than-bankrupting monitors.

I'll try your suggestions. BM, although as I say, the problem is not constant, but intermittent.

Hi Rod,
Reading your symptoms and those of the OP, I don't see how they are the "same thing exactly", but intermittent problems could be caused by storing your Off tuning in a User File - so what appears intermittent occurs whenever you load a specific file. Anyway worth checking. A problem that is always there is different -one that comes and goes could be stored in data that you are restoring from a file. Make it a point of loading each one of your User Files (.X7U) and verify the "Tune" parameter setting. Fix and overwrite any files you load that are tuned improperly.

To Hale,
Please call Customer Service they can start a report on it or you can simply take it to an authorized Service Center where they can test it. Of course, intermittent problems will not be caught if it related to a specific File you have loaded as I mentioned to Rod. But you're saying it's Tuning is inconsistent across the keyboard which I'm sure they will be interested in following up on.

If you want any 'guesses' here on the forum (all we can do from here) you'll need to provide more specifics. Specifics: which Performances... Just one specific Performance that is doing it would be helpful and one that then later played normal. Not saying that it's an exaggeration when someone mentions it's a global problem but this can eliminate facts not in evidence. When you went away to eat - and came back... you're saying the same sound corrected itself (if I'm reading that correctly)... and further, all sounds seemed to correct themselves. That is an important symptom which can eliminate a lot things.

I'm unaware of anything that would cause the symptom as you describe. That's why you very much should have this looked at by an authorized service center.
Voltage would not affect the pitch and certainly not in how you have described.
Are you near the Store you got it from?
Where are you located? (If in the USA I can give specifics about what to do).

Let us know.

My gracious what is going on with the Montage? We've got hissing in another post and now random pitch flux. Next these things will be barking and biting us. I'm putting mine on a leash tonight. 🙂

Any sound anomalies would be nice to have recorded clips of. The hissing thread even mentioned having the keyboard hooked up to a digital recorder which could directly record the sound. This one for pitch - it wouldn't take a very high quality recording device to hear the pitch issue - say just a "C" scale starting at the lowest "C" and going up to the highest "C". At about 100bpm with quarter notes.

For this one, just using a laptop microphone to record would be fine. Although I suppose digital audio out (USB) and recording an audio track on cubase (or other DAW) and exporting to a .WAV or other suitable audio format would be OK too.

ZIP the result to attach here - or upload to a sound sharing site like http://clyp.it