Yamaha PF-500 Owner's Manual - Page 58
Caution - usb driver
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Connections About the USB connector • In order to use MIDI on your computer, you will need application software that is appropriate for your computer and that meets your needs. • If you want to use a USB cable to connect the PF-500 to your computer, you must connect the USB cable before turning on the power of the PF-500. Also, do not turn the power of the PF-500 on or off while application software that uses USB MIDI is running. • The PF-500 will begin transmission a short time after the USB connection is made. • If you are using Windows 2000, problems may occur on your computer when your computer starts up. In this case, turn on the power of the PF-500 when your computer is running. • When using a USB cable to connect the PF-500 to your computer, make the connection directly without passing through a USB hub. • Depending on the state of your computer, the operating state of the PF-500 may become unstable. Do not use your computer in a way that causes it to enter an unstable state. CAUTION • If you turn the power of the PF-500 on/off or connect/disconnect the USB cable in the following states, problems will occur in the computer system, possibly causing it to "freeze" (hang up), or causing the PF-500 to stop functioning. - While installing the driver - While starting-up or shutting-down the operating system - While your computer is suspended (sleeping) - While a MIDI application is running • Performing the following actions may cause your computer to hang up or the PF-500 to stop functioning. - Rapidly turning the power on/off or connecting/disconnecting the cable - Shifting to power-conservation (sleep) mode while MIDI data is being transferred, or returning from sleep mode - Connecting/disconnecting the cable while the power of the PF-500 is on - Turning the power of the PF-500 on/off, starting up your computer, or installing the driver while a large amount of data is being transferred 58 PF-500