Yamaha MP-1 Owner's Manual download pdf (Page 27)

Troubleshooting

NP-30/YNP-25 Owner’s Manual

Troubleshooting

Optional Equipment

Foot Pedal (FC3/FC4/FC5)

Keyboard Stand (L-2C)

USB-MIDI interface (UX16 )

Headphones (HPE-150/HPE-30)

Problem Possible Cause and Solution

The NP-30/YNP-25 does not turn on. The NP-30/YNP-25 has not been plugged in properly. Securely insert the female plug

into the jack on the NP-30/YNP-25, and the male plug into a proper AC outlet

(page 11).

The batteries are low or dead. Replace all six batteries with completely new alkaline

ones, or use the optional AC adaptor.

Noise is heard from the speakers or head-

phones.

The noise may be due to interference caused by the use of a mobile phone in close

proximity to the NP-30/YNP-25. Turn off the mobile phone, or use it further away from

the NP-30/YNP-25.

The batteries are low or dead. Replace all six batteries with completely new alkaline

ones, or use the optional AC adaptor.

The overall volume is low, or no sound is

heard.

The Master Volume is set too low; set it to an appropriate level using the [MASTER

VOLUME] control.

Make sure a pair of headphones is not connected to the headphones jack (page 13).

Make sure that Local Control (page 25) is ON.

The batteries are low or dead. Replace all six batteries with completely new alkaline

ones, or use the optional AC adaptor.

The sound is distorted. If you are using manganese batteries with the instrument, try replacing them with a

set of new alkaline batteries. Alternately, you could use the AC adaptor instead, or

try turning down the volume.

The sustain pedal has no effect. The pedal cable/plug may not be properly connected. Make sure to securely insert

the pedal plug into the SUSTAIN jack (page 13).

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Yamaha MP-1 Owner's Manual Page 27