General Troubleshooting - Grandmother

For general troubleshooting of the Grandmother, we recommend the following steps in order:

1. Reset all GLOBAL SETTINGS
   •  Hold down the HOLD and SYNC buttons for three seconds until you see the SYNC button blinking.
     
     
   • Hold the highest black key (A#2), and while holding it press the lowest black key (F#0). You will see the three buttons on the LHC blink rapidly for a moment to confirm that the reset happened.
     
     Here is a video detailing this process.
     
     
2. Perform a NOTE CALIBRATION
   • Hold down the HOLD and SYNC buttons for three seconds until you see the SYNC button blinking.
     
     
   • Once blinking, hold the PLAY, HOLD, and TAP buttons, and then press the lowest white key on the keyboard.
     
     

You can find a video showing this process here.

1. Perform a POT CALIBRATION 
   • Send the necessary sysex files to the instrument via USB. You can find the necessary files and further instruction here.
     
     
2. Update the FIRMWARE to the latest version.
   
   
   • You can find files and instructions here.
     
     

A guide on how to send sysex files to your synthesizer can be found here.