Yamaha CP50 Owner's Manual - Page 56

Appendix Troubleshooting No sound is produced by your CP5 or CP50 when a sequence is played on a connected computer or MIDI device.  Confirm that the channel being used by the computer to transmit MIDI data matches the stage piano's receive channel. Press the [UTILITY] button  Jump to Page 5 by pressing the [5] button  Turn Knob 1 to set the RcvCh parameter appropriately. Transmission and reception of data using the Bulk Dump function is not working.  If you are having trouble transmitting data, ensure that the stage piano's device number setting matches the device number of the connected MIDI device. Press the [UTILITY] button  Jump to Page 6 by pressing the [6] button  Turn Knob 1 to set the DevNo. parameter appropriately.  If you are having trouble receiving data, ensure that the device number setting is identical to that used when sending the data. Press the [UTILITY] button  Jump to Page 6 by pressing the [6] button  Turn Knob 1 to set the DevNo. parameter appropriately  Press the [STORE] button to store this setting (page 51). Data cannot be saved on a USB flash-memory device.  Ensure that the USB flash-memory device is not write protected.  Ensure that the USB flash-memory device is correctly formatted. Press the [FILE] button  Jump to Page 2 by pressing the [2] button  Press Knob 2 to format the USB flash-memory device. (See the Reference Manual pdf document for more details.)  Ensure that you are using a type of USB flash-memory device supported by your CP5 or CP50 (page 25).  Ensure that the USB flash-memory device is not connected via a USB hub. Connection via USB hubs is not supported (page 25). 56 CP5/CP50 Owner's Manual