GT-5: Calibrating the EXP pedal.
Use the following steps to calibrate the on-board Expression Pedal on the GT-5:
1. Power on while holing PEDAL ASSIGN and NAME.
2. Press PARAMETER right repeatedly to select "17. CALIBRATE EXP."
3. Move the EXP pedal fully to the heal-back position.
4. Press WRITE.
5. Move the EXP pedal fully to the toe-end position.
6. Press WRITE.
When finished, turn off the power and then back on again.