Use the following procedure to initialize the RSS-303/M and restore its factory settings:
1. Remove the protective cover located on the left
side of the RSS-303M’s front panel.
2. Press SETUP/CHECK.
3. Press S4 [MENU].
4. Press S3 [Other Setup].
5. Press S1 [System].
6. Press S4 [Reset].
7. Press S4 again.
8. When “Function Completed!” is displayed, press S4.
9. Press the VALUE dial twice.