Troubleshooting - Optimus CONCERTMATE 690 42-4035 Owner's Manual

42-4035.fm Page 18 Thursday, August 12, 1999 8:05 AM

TROUBLESHOOTING

If your Concertmate 690 is not performing as it should, these suggestions might
help. If you still cannot solve the problem, take your Concertmate 690 to your local
RadioShack store for assistance.
Problem
No sound from the
Concertmate 690
No accompaniment
when accompaniment
keys are pressed
Occasional interfer-
ence
18
Possible Cause
Power supply problem.
is set to
MODE FINGERED
and you pressed less
than three keys for a
chord.
Refrigerators, washing
machines and similar
electric appliances are
causing interference.
Suggestion
Check the power supply.
Are batteries installed
correctly?
Are batteries fresh?
Is the adapter connected
properly?
Press at least three accom-
paniment keys.
Use an AC outlet on a differ-
ent electrical circuit, away
from the appliance.