Akai MPC 4000 Reference Manual page 131

Global mode
• ODUB/PNCH ..............If stopped, performs Play. If playing, performs Punch-in
• TAP ..............................The same function as the [TAP TEMPO] key.
• PAD BANK A–F .........The same function as the PAD BANK [A]–[F] keys.
• PAD 01–16 ..................The same function as striking a pad 1–16. The velocity value
• F1–F6...........................The same function as the [F1]-[F6] keys.
B Function 2 field
Select the function for the foot switch connected to the [FOOT SWITCH 2] jack. The
available functions are the same as in the Function 1 field.
122
(overdub). If recording, performs Punch-out.
will always be the maximum.