Roland SP-404MK Reference Manual page 197

While holding down the [DEL] button
[EXIT] button
Shortcuts that use the [COPY] button
While holding down the [COPY] button
[EXIT] button
Shortcuts that use the [MFX] button
While holding down the [MFX] button
[DJFX LOOPER] button
Function (explanation)
Deletes all samples or patterns in a bank.
→"Deleting the Sample from a Pad" "Deleting the Pattern from a Pad"
Function (explanation)
Copies all samples or patterns in a bank to a different bank.
→"Copying the Sample from a Pad" "Copying the Pattern of a Pad"
Function (explanation)
Displays the MFX LIST from #17 onwards.
→"Using the MFX Effects"