Alesis QX49 Guide D'utilisation Rapide page 6

TROUBLESHOOTING
PROBLEM
The display does not light up.
No sound from target device.
Notes sustain continuously.
SPECIFICATIONS
POWER:
KEYBOARD:
PADS, KNOBS:
ACCESSORIES:
MIDI OUTPUTS:
USB:
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE
FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2)
THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY
CAUSE UNDESIRED OPERATION.
CAUSE
No power.
QX49 not properly
connected.
QX49 connected after
software application has
started.
Problem is caused by use of
a USB hub.
Software application not set
to receive MIDI data from the
QX49.
QX49's MIDI channel not the
same as application's
incoming MIDI chanel.
Sustain pedal was plugged or
unplugged after the QX49
was powered on.
Stuck notes due to
incomplete MIDI data.
USB, 9V DC, 500mA, center-positive, 5.5mm barrel diameter (sold separately)
49 keys
4 velocity-sensitive pads, 8 knobs
Quickstart Guide, USB cable
2 5-pin jacks
1 slave connector (MIDI over USB)
http://www.alesis.com/qx49
Please make sure that the QX49 is connected to your
computer and that the computer is powered on.
If using a power adapter, please make sure that the
adapter is plugged into a live power outlet.
Check your computer's USB connection to confirm that
the QX49 is recognized. If necessary, replug the
connection and restart your computer.
If controlling an external hardware module, make sure
that the MIDI cable is connected from the QX49 to the
device's MIDI IN port.
Restart the software application with the controller
plugged in.
Unplug the QX49 from the USB hub and connect
directly to the computer.
Ensure that the QX49 or USB MIDI device is listed as
an active MIDI source in your application. Usually, the
MIDI settings can be accessed through the
application's Preferences menu.
Make sure that the QX49 is sending MIDI information
on the channel that the target device expects.
Press MUTE and NULL simultaneously to send a MIDI
panic message, which resets all controls and sends an
All Notes Off message. If that does not work, turn the
unit's power off, wait a moment and then turn it on
again.
6
SOLUTION