GT-6B: Initializing - Restoring the Factory Settings
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 simultaneously holding the COMPRESSOR TYPE and COMPRESSOR TYPE VARIATION buttons. "Factory Reset" shows in the display.
2. Release the buttons, and then press the WRITE button.