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Trouble Shooting
If the unit doesn’t work the way you think it should, check the items shown in the following table before
you assume that there is a malfunction. If the cause of the problem is still unclear, contact your retailer or
Roland Corporation’s Customer Service Center.
For other computer-related problems, please read “ReadMe” on the included CD-ROM.
Symptom Cause Remedy
Nothing appears on
the LCD screen.
The display contrast is too
dark or too light.
Adjust the contrast of the LCD screen (p. 14).
No sound. The volume is turned
down.
Check the [SENS] controls and the volume
levels for connected amplifiers, mixers, and
other equipment (“Sensitivity (SENS)” p. 17).
The microphone is not
receiving the required
power.
Check the documentation for the microphone
and make the phantom setting if necessary (p.
17).
The audio input-source
settings are different from
the actual configuration.
Make settings that match the input jack and
standard (“Audio Input Source” p. 26).
External malfunction Check the cables, amp, mixer, and other
equipment.
The volume of the
MIC IN sound is
too low.
You could be using a
connection cable that
contains a resistor.
Use a connection cable that does not contain a
resistor (such as one from the Roland PCS
series).
The output sound is
too low or too loud.
The switch setting for the
output level is not
appropriate.
Set the [OUTPUT LEVEL] switch on the rear
panel to match the destination device (p. 13).
Effects are not
applied.
The unit is set to OFF or
BYPASS.
Check the settings (“Using Effects” p. 19).
RESET was applied. The RESET function changes the effect
parameter settings so the most minimal effect is
produced. Change the parameters or choose
another patch (“Resetting Effect Parameters
(RESET)” p. 15).
Changes in system
parameters are not
saved.
The power was turned off
immediately after making
the changes.
When the [ENTER] button is illuminated, it
means there are changes that have not been
saved. Before turning off the power, press the
[ENTER] button to save such changes (p. 14).
I can't change the
“DRIVER” setting
parameter of
MMP-2 unit.
The unit is already
connected to the computer
via USB.
The “DRIVER” setting parameter of MMP-2
unit cannot be switched during the USB
connection of MMP-2 unit and computer exists.
Disconnect once and then change setting.
(“MMP-2 settings” p. 30).
I changed the USB
driver, but the
change does not
take effect.
The power was not cycled. A change in the driver takes effect after you
switch off the MMP-2’s power, then turn it on
again (“MMP-2 settings” p. 30).
LCD screen
displays unstable
image when
buttons are pressed
in rough.
Buttons were pressed in
rough.
The temporary distortion of image on LCD after
rough pressing is not because of malfunction.
Please be careful to press buttons in moderate
pressure.