Roland GT-PRO Manuel du propriétaire télécharger pdf (Page 147)

147

Troubleshooting

Problems when using the

USB Driver

Operating system becomes unstable

❏ Operation becomes unstable when the computer is

started up with the GT-PRO already connected

→ Please start up your computer with the GT-PRO

disconnected, and then connect the GT-PRO. On a

computer that uses a USB keyboard, starting up the

computer with the GT-PRO already connected may

cause operation to become unstable. In this case, start up

the computer with the GT-PRO disconnected, and then

connect the GT-PRO.

Can’t hear sound from the computer

❏ Is it possible that the GT-PRO’s OUTPUT MAIN/SUB

has been placed at 0 (turned fully counterclockwise)?

❏ Are USB/DGT Out Ch. (p. 89) and USB/DGT Out Lev

(p. 89) set correctly?

❏ Have you specified the audio and MIDI data output

destination for your operating system?

→ You must specify the GT-PRO as the audio data output

destination for your computer. For details on how to

make this setting, refer to Settings and checking.

(Windows, “Driver settings” (p. 123)/ Macintosh, “OMS

settings” (p. 130), “FreeMIDI settings” (p. 133))

❏ In your playback software, have you specified the

audio data output destination?

→ For some software, you will need to specify the GT-PRO

as the output destination for audio data. For details on

the procedure for making settings, refer to the owner’s

manual for your software.

❏ Are you running multiple applications?

→ If multiple applications are running simultaneously, an

error message may appear. If this occurs, click [OK] and

exit the other applications.

Even if an application window is closed, it is still

running if it appears in the taskbar. Be sure to exit

unneeded applications displayed.

❏ Was the driver installed correctly?

→ In order for you to play back audio data via the GT-PRO,

the driver must be installed. For installation and settings,

refer to “Driver installation and settings” (Windows, p.

110 / Macintosh, p. 126).

❏ Is your computer in Suspend or Sleep mode?

→ If so, get your computer to resume normal operation,

then exit all applications that are using the GT-PRO.

Next, turn the GT-PRO’s power off, then switch it on

again.

❏ Did you plug in the USB cable, or unplug it while an

application was running?

→ Exit all applications that are using the GT-PRO, and exit

all applications that are using the GT-PRO, and re-

connect the GT-PRO.

❏ Have you selected “Game compatible device” or

“Voice modem” as the output for the audio track?

→ If game compatible device or voice modem (the actual

name will depend on the computer you are using) is

selected for the audio track of your software, the audio

track may not play back. Do not select these devices as

the port.

❏ Has your computer been set to enter Sleep mode?

→ If your computer enters Sleep mode, exit the software

you are using, and then restart your computer.

We recommend that you set your computer to not use

Sleep mode.

Noise is heard during audio playback

❏ Is a guitar still connected?

→ If a guitar is connected to the GT-PRO, disconnect the

guitar. Disconnect any audio devices you are not using.

❏ Noise is sometimes heard in the input.

→ If a USB-compatible MIDI sound module and the GT-

PRO are connected via USB to the same computer, and

the outputs of the MIDI sound module are connected to

the input jacks of the GT-PRO, noise from your

computer may be heard via the MIDI sound module

from the GT-PRO, depending on the computer you are

using. If this occurs, you can either connect the MIDI

sound module and the GT-PRO in parallel using a self-

powered hub, or connect the MIDI sound module via its

serial or MIDI interface.

❏ Are two or more audio devices such as the GT-PRO or

a mixer connected to your computer?

→ Try connecting only a single GT-PRO unit, and check

whether the noise disappears. If numerous audio devices

are connected to a computer, noise may occur depending

on your system. In such cases, connect only the GT-PRO

to your computer.

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Roland GT-PRO Manuel du propriétaire Page 147

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