Troubleshooting

10.A dialog box will ask you to confirm deletion of the device. Verify the contents of the dialog box, and click [OK]. Delete each unwanted occurrence of “Composite USB Device,” “USB Device,” or “USB composite device” indications with an “!” or “?” symbol.

11.Turn off the power of the V-Synth, then delete the driver.

12.Restart Windows. Then install the driver once again.

*If the problem still occurs after you have taken the above measures, please refer also to the Readme file for the USB driver. The Readme file is on the CD-ROM.

Problems Related to the USB Driver (Macintosh)

Problem

Cause

Action

 

 

 

A message of “Drivers need-

It is possible that the V-Synth’s USB MIDI driver has

Correctly install the USB MIDI driver as described in

ed for the USB device “V-

not been correctly installed in your computer.

Readme file on the included CD-ROM.

Synth” are not available.

It is possible that there is a conflict with the driver

We are aware of a problem that causes the V-Synth to

Would you like to look for

(function extension) of another USB device.

not be recognized correctly if a driver for I-O Data Cor-

these drivers over the inter-

 

poration’s USB CD-R drive is installed. In this case, dis-

net?” is displayed

 

able “ISD 200 BOTBridge” or other driver file by

 

 

moving it out of the Extensions folder, located within

 

 

the system folder.

When the computer returns

The V-Synth’s USB MIDI driver does not support the

Do not use the Sleep functionality of Mac OS. When

from the Sleep state, an indi-

Sleep functionality of Mac OS.

you use the V-Synth, open the “Energy Saver” control

cation of “MIDI off line!” ap-

 

panel and specify “Never” as the period of inactivity

pears

 

before the system goes to sleep.

148

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Roland V-Synth owner manual Problems Related to the USB Driver Macintosh, 148