DR-550, DR-550MKII: Initializing - Restoring the Factory Settings

Tags: dr-550,dr-550mkii
The following procedure can be used to clear the internal memory and reload the factory settings:

(CAUTION: All USER information will be lost. Be sure to back up any information you wish to keep.)

1. Power on while holding down the [-1] and [+1] buttons.

2. Press START.