PS-1 - How do I factory reset the ps-1?
To load the factory defaults:
1. Scroll to the advanced menu and then press Select. Enter your PIN to continue.
2. Scroll to the Maintenance Menu and then press Select.
3. Scroll to Defaults and then press Select. A Confirmation display appears.
4. Press Up or Down to move to the second line and then press Select.
5. Press Up or Down to change the No to Yes and then press Select.
The PS-1 loads the factory defaults.