Yamaha Motif XF8 Distuned

Please I have a Yamaha Motif XF8 Keyboard which distuned while in use. Am a bit Keyboard tech with quite few experience.

Please what components, diode or ic on the motherboard could be responsible for this?

Please what will you advise I do on it?

Thanks in advance for your timely replies as this is very urgent.
Am most grateful

Given its a digital synth, they don’t tend to lose tuning like an analogue synth.

I would be investigating the pitch bender pots and wiring. There is often global settings for tuning too, check those first and then the pitch bender.

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Thanks, I will check that. It should help.