... It seems like the circuitry would somehow need to simply "learn" what the resistance change from peg to peg would be, factor in the pitch bend setting and do its thing.
Hi HarleyRider,
I recommend to do the following steps:
1. Download the PSR-S750 SERVICE Manual here:
https://psrtutorial.com/lessons/workshops/ServiceManuals.html2. Read page 56 ("PSR-S750 Test Program") of this Service Manual.
3. Switch OFF the S750. Press
and hold the three keys C#2, F2 and G#2 (= C# Major chord in the second octave) while powering on the S750 (until "TEST" appears on the LCD).
4. Go to page 60 of the Service Manual and read the description of Test #28 (Pitch Bend Wheel Check).
5. Select Test item "
028 : Pitch Bend Wheel Check" by using [Tempo +/-] buttons OR [Data entry] wheel.
6. Do the Test #28 as described on page 60:
When the test is started, “ Pitch Bend Up 128 ” is displayed.
Set the [PITCH BEND] wheel to the maximum position and check that the G3 sound is pro-
duced and “ Pitch Bend Down 255 ” is displayed.
Set the [PITCH BEND] wheel to the minimum position and check that , the C3 sound is pro-
duced and “ Pitch Bend Center 0 ” is displayed.
Set the [PITCH BEND] wheel to the center position and check that the C4 sound is produced
and “ OK 0 ” is displayed.
IF "OK 0" is finally displayed, the PB Wheel should work properly.
7. Select Test #44 to EXIT the Test Program. (
Do not turn off the power until the main screen is indicated after executing the Test Exit!)
Hope this helps!
Best regards,
Chris