There are 512 preset patches in the JV-1080 as well as 128 user patches. Any installed expansion boards also have built-in patches that can be accessed directly from the JV-1080 front panel.
- Press PATCH.
- Use the USER/CARD, PRESET and EXP buttons to select the desired group of patches.
- Use the A/B/C/D buttons to determine which Bank of patches you wish to use.
- Use the VALUE dial to select Patches. Notice that turning the dial moves through patches one-by-one, and turning the dial while pressing it in moves through patches in increments of 10.
Owner's Manual: https://www.roland.com/us/support/manual_archive/