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Troubleshooting: Appendix A
QuadraSynth Plus Piano Reference Manual 176
APPENDIX A
TROUBLE-SHOOTING
Trouble-Shooting Index
If you are experience problems while operating the QuadraSynth Plus, please use
the following table to locate possible causes and solutions before contacting
Alesis customer service for assistance.
Symptom Cause Solution
The display does not light
when the ON/OFF switch
is turned on.
No power. Check that the power cable
is plugged in properly.
Display is blank. Display contrast is set
either too high or low.
Adjust the display contrast.
(Global, p.1, Quad Knob 1).
No sound. Bad connections. Check your audio cables; if
necessary, swap cables.
Volume is turned down. Turn [VOLUME] knob up.
Keyboard Mode is set
incorrectly.
Set the Keyboard Mode to
“NORMAL” (Global, p. 2).
No MIDI input in Mix Bad connections. Check MIDI cables.
mode (cannot control
through MIDI).
One or more channels’
MIDI IN switch is off.
Make sure the MIDI IN
parameter is turned on for
the channel(s) you wish to
control via MIDI.
Keyboard Mode is set
incorrectly.
Make sure the Keyboard
Mode (Global p. 2) is set to
“NORMAL”.
Notes sustain
continuously.
Sustain pedal was
plugged in after power
was turned on.
Turn off power and turn
on again.
Re-initializing
If your unit behaves erratically or “freezes”, the first step is to power down the
unit. and power it back up again. Disconnect any cables connected to the MIDI
IN jack, and make sure that a sequencer or keyboard is not sending messages to
the QuadraSynth Plus that would make it behave erratically (such as a long
stream of pitch bend messages on 16 channels simultaneously). If these steps do
not solve the problem, you must re-initialize the software. Make sure your mod
wheel is all the way down before re-initializing, otherwise the “zero” position of
the mod wheel will be incorrect. To re-initialize the QuadraSynth Plus, hold
down both Quad Buttons [1] and [4] while turning on the power. This will reset
all Global parameters to their default settings, and will initialize all edit buffers
so that all Mix, Program and Effects parameters are reset to their default settings.
However, none of the Programs, Mixes, or Effects are changed when re-
initializing the unit.