Roland Music Atelier AT-45 Owner's Manual page 192

Troubleshooting
Problem
Vertical lines can be seen in
the screen.
The Bass Range Sounds Odd,
or There Is a Vibrating
Resonance.
The volume level of the
instrument connected to AT-
45 is too low.
Pressing the expression
pedal while playing back
Atelier performance data
produces a crackling noise
Tempo not changing even
when the source tempo is
reselected (when correcting
rhythms using the Rhythm
Customize function).
Unable to save created
rhythm to the User Memory
192
Check
This is attributable to the design
fundamentals of a liquid crystal
display, and does not indicate a
malfunction.
Playing at loud volumes may cause
instruments near the AT-45 to
resonate. Resonance can also occur
with fluorescent light tubes, glass
doors, and other objects. In
particular, this problem occurs more
easily when the bass component is
increased, and when the sound is
played at higher volumes.
When listening through
headphones:
Here, a different cause (such as
resonance produced by the AT-45)
would be suspect.
Could you be using a connection
cable that contains a resistor?
The expression pedal function is set
to "PEDAL+COMPOSER" during
playback of Atelier performance
data.
When this setting is used, moving
the expression pedal while playing
back Atelier performance data may
create a difference between the
expression pedal information in the
performance data and the volume as
set with the expression pedal, which
can result in this kind of sound being
produced.
Auto Std Tempo (Auto Standard
Tempo) is set to OFF.
When you switch rhythms while the
rhythm is stopped, the tempo is
automatically set to the new rhythm.
The tempo setting is not changed
automatically even when you switch
rhythms while the rhythm is
stopped.
"Memory Full" appears in the
display.
The available memory remaining in
the AT-45 is not sufficient.
Solution
Adjusting the display's contrast can
make such lines less noticeable, so
you may want to try adjusting it.
Use the following measures to
suppress such resonance.
Place speakers so they are 10-15 cm
from walls and other surfaces.
Reduce the volume.
Move the speakers away from any
resonating objects.
Consult your Roland dealer or
nearest Roland Service Center.
Use a connection cable that does not
contain a resistor.
Set the expression pedal function to
"PEDAL" during playback.
Turn "Auto Std Tempo" on.
The available memory remaining in
the AT-45 is not sufficient.
First delete some other rhythm
saved to the user memory, then save
the rhythm you have created to the
user memory once again.
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