Roland SP-404MKII Creative Sampler and Effector - Manual (Page 67)

Combining Samples to Create a Pattern (PATTERN SEQUENCER)
67
Selecting a Pattern Bank
Select the bank to use from the 10 available banks (A–J).
1. Press the bank [A/F]–[E/J] buttons.
The bank switches.
Each time you press the bank [A/F] button, the bank switches between A and F.
When bank A–E is selected, the bank [A/F]–[E/J] button lights up. When bank F–J is selected, the bank [A/F]–[E/J] button
blinks.