Deutsch Français If the Onboard expression pedal of the POD HD500 does not sweep through parameter values as it normally would, you may need to perform a pedal calibration to reset the functionality of the expression pedal:   Hold the down the RIGHT ARROW button on the 4 Way Nav Pad while powering the unit on, until you see the Test Mode screen (Pedal Cal, etc.), and then proceed with the steps below: If not already selected, use on the 4 Way Nav Pad to select