Optimus 42-4031 User Manual
20
TROUBLESHOOTING
If your Concertmate 410 is not performing as it should, these suggestions might
help. If you still cannot solve the problem, take the keyboard to your local Ra-
dioShack store for assistance.
help. If you still cannot solve the problem, take the keyboard to your local Ra-
dioShack store for assistance.
Symptom
Possible Cause
Remedy
No sound, even if
keys are pressed.
keys are pressed.
POWER
is set to
OFF
.
Set
POWER
to
ON
.
VOLUME
is turned down.
Turn up
VOLUME.
Headphones are con-
nected.
nected.
Unplug headphones.
Power supply problem.
Check the power supply.
• Ensure batteries are
installed correctly.
• Ensure batteries are
fresh.
• Check for correct AC/
DC adapter connection.
No rhythm.
VOLUME
is turned down.
Adjust
VOLUME.
Rhythm was not started.
Press
START
/
STOP
.
No accompaniment
when accompani-
ment keys are
pressed.
when accompani-
ment keys are
pressed.
VOLUME
is turned down.
Adjust
VOLUME.
Accompaniment button
not pressed.
not pressed.
Press
A.B.C
.
No sound when con-
nected to an exter-
nal amplifier.
nected to an exter-
nal amplifier.
POWER
is set to
OFF
.
Set
POWER
to
ON
.
VOLUME
is turned down.
Turn up
VOLUME.
Defective connection
cord.
cord.
Replace the connection
cord.
cord.
Problem with external
amplifier.
amplifier.
Check the external ampli-
fier.
fier.
42-4031.fm Page 20 Wednesday, August 11, 1999 4:22 PM