Troubleshooting - Optimus Concertmate 980 Owner's Manual

42-4038.fm Page 29 Thursday, August 12, 1999 8:50 AM

TROUBLESHOOTING

If your Concertmate 980 is not performing as it should, these suggestions might help.
If you still cannot solve the problem, take the keyboard to your local RadioShack
store for assistance.
Trouble
No sound, even if keys
are pressed.
No sound when con-
nected to an external
amplifier.
The key or tuning does
not match when playing
along with another
MIDI instrument.
Possible Cause
The keyboard has
turned off automatically.
Volume is turned down.
Headphones are con-
nected.
Power supply problem.
You are pressing too few
accompaniment keys
while is
POWER/MODE
set to .
FINGERED
Volume is turned down.
Defective connection
cord.
The tuning or transpose
parameter is set to a val-
ue other than 0 or 00 .
Remedy
Set to
POWER/MODE OFF
then again.
ON
Repeatedly press
MAIN
s to increase the
VOLUME
volume.
Disconnect headphones.
Check the power supply.
• Are battery symbols
(+/–) facing correctly?
• Are the batteries fresh?
• Is the AC or DC adapter
connected properly?
Set to
POWER/MODE NOR-
or
MAL CONCERT CHORD
Press 3 or 4 keys to form a
chord while
POWER/MODE
is set to .
FINGERED
Repeatedly press
MAIN
s to increase the
VOLUME
volume.
Replace the connection
cord.
Set the tuning or transpose
to or
0 00 .
.
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