Scratch # 1 Keybd 1: Number 1, on the keyboard, applies the first scratch sample to Turntable A.
Scratch # 2 Keybd 2: Number 2, on the keyboard, applies the second scratch sample to Turntable A.
Scratch # 3 Keybd 3: Number 3, on the keyboard, applies the third scratch sample to Turntable A.
Scratch # 4 Keybd 4: Number 4, on the keyboard, applies the fourth scratch sample to Turntable A.
Scratch # 5 Keybd 5: Number 5, on the keyboard, applies the fifth scratch sample to Turntable A.