Yamaha YPR50 Owner's Manual - Page 19

Lowering the pitch: + Any key within G3 ~ F 4 YPR-50 Hold down these keys and press one of the keys in the TUNING section to lower the pitch. The pitch can be lowered in one-step increments over the TUNING key range of G3 - F 4. The LEDs indicate the amount of detuning from normal pitch (see below). Raising the pitch: Any key within G3 ~ F 4 + Hold down these keys and press one of the keys in the TUNING section to raise the pitch. The pitch can be raised in one-step increments over the TUNING key range of G3 - F 4. The LEDs indicate the amount of detuning from normal pitch (see below). Restoring the normal pitch: Any key within G3 ~ F 4 + Simultaneously hold down these three keys and press one of the keys in the TUNING section to restore the pitch to normal (0). Tuning LED indications: High (sharp) LEDs Normal (in tune) Low (flat) n The Tuning setting cannot be changed when the Pianist feature is on. Tuning value 50 1 ~ 49 0 -49 ~ -1 -50 19