Alesis Photon X25 Quick Start Owner's Manual page 19

Notes sustain
continuously.
Sustain pedal works in
reverse.
Sound source not
active or volume set
to 0.
MIDI Echo not
enabled in sequencer
software.
An external MIDI
IN device is present.
Photon's 5-pin
MIDI OUT not
connected to sound
source's MIDI IN.
Sustain pedal was
plugged in after
power was turned
on.
Stuck notes due to
incomplete MIDI
data.
Sustain pedal was
plugged in after
power was turned
on.
Try using an instrument that has a virtual
keyboard built in. Will the instrument sound
when you use that virtual keyboard? If not, the
problem may be with the software synthesizer,
not the Photon connection.
If the Photon is both (a) connected to a
computer via USB and (b) connected to an
external sound source via MIDI OUT, be sure
that a computer sequencer program is active
and that it is set to "MIDI Echo."
If you are using the 5-pin MIDI OUT port to
connect to another MIDI device and another
device is connected to the Photon's MIDI IN,
the MIDI OUT port only sends information
from the MIDI IN device, not the Photon.
Ensure that any 5-pin cables are connected to
the proper inputs and outputs.
Turn the unit's power off, wait a moment, and
then turn it on again.
Turn the unit's power off, wait a moment, and
then turn it on again.
Turn the unit's power off, wait a moment, and
then turn it on again.
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