GR-20, GR-20S: Local Control
Use the following steps to turn off Local Control:
1. Turn OFF the power of the GR-20.
2. Power on while holding the SYSTEM EDIT button. After a few moments "Lo" will show in the display, and then the GR-20 will finish booting to its normal play mode.
3. Release SYSTEM EDIT. Local Control is now set to "OFF."
Note: It's not possible to save the Local Control "OFF" setting into the GR-20's memory. To return Local Control to it's normal mode (on), turn the power of the GR-20 off, and then on again.