110
DGX-620/520, YPG-625/525 Owner’s Manual
Accessory CD-ROM Installation Guide
■
Troubleshooting
• Is the USB cable connected correctly?
Check the USB cable connection. Disconnect the
USB cable, then connect it again.
• Is the USB function enabled on your com-
puter?
When you connect the instrument to the
computer for the first time, if the “Add New
Hardware Wizard” does not appear, the USB
function on the computer may be disabled.
Perform the following steps.
1
Select [Control Panel]
➔
[System]
➔
[Device Manager] (for Windows 98/Me), or
select [Control Panel]*
➔
[System]
➔
[Hardware]
➔
[Device Manager] (for Win-
dows 2000/XP).
* Classic View only in Windows XP.
2
Make sure that no “!” or “x” marks appear
at “Universal serial bus controller” or
“USB Root Hub”. If you see an “!” or “x”
mark, the USB controller is disabled.
• Is any unknown device registered?
If driver installation fails, the instrument will be
marked as an “Unknown device”, and you will
not be able to install the driver. Delete the
“Unknown device” by following the steps below.
1
Select [Control Panel]
➔
[System]
➔
[Device Manager] (for Windows 98/Me), or
select [Control Panel]*
➔
[System]
➔
[Hardware]
➔
[Device Manager] (for Win-
dows 2000/XP).
* Classic View only in Windows XP.
2
Look for “Other devices” in the menu
“View devices by type”.
3
If you find “Other devices”, double-click it
to extend the tree to look for “Unknown
device”. If one appears, select it and click
the [Remove] button.
4
Remove the USB cable from the instru-
ment, and make the connection again.
5
Install the driver again.
• Windows 98/Me users... see page 108
• Windows 2000 users..... see page 108
• Windows XP users........ see page 109
• Did you install the driver? (page 107)
• Is the USB cable connected correctly?
• Are the volume settings of the instrument,
playback device, and application program set
to the appropriate levels?
• Have you selected an appropriate port in the
sequence software?
• Are you using the latest USB MIDI driver?
The latest driver can be downloaded from the
following web site.
http://music.yamaha.com/download/
• Does your computer satisfy the system
requirements?
• Is any other application or device driver run-
ning?
• Do not suspend the computer while the MIDI
application is running.
If you are using Windows 2000, you may not be
able to suspend/resume normally, depending on
the particular environment (USB Host
Controller, etc.). Even so, simply disconnecting
and connecting the USB cable will allow you to
use the instrument functions again.
[Windows Me/98]
1
When the instrument is recognized cor-
rectly, double-click “System” in the Con-
trol Panel to open the System window.
2
Double-click the “Device Manager” tab,
select “YAMAHA USB MIDI Driver” and
delete it.
3
Use the MS-DOS prompt or Explorer to
delete the following three files.
The driver cannot be installed.
When controlling the instrument from
your computer via USB, the instrument
does not operate correctly or no sound
is heard.
Playback response is delayed.
Cannot suspend or resume the com-
puter correctly.
How can I delete or re-install the driver?
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