Casio Casiotone CT-S400 User Manual page 12

■ Low Battery Indication
A battery icon appears on the display to let you know when battery power is getting low.
Declining Battery Power
Battery Replacement Required
• Low battery power may cause notes to become distorted, or other problems.
• You can conserve battery power by using headphones and by reducing the volume level.
• Continued use with low batteries may cause power to turn off suddenly. This can cause
stored data to be corrupted or lost.
Black battery icon (not flashing)
White battery icon (flashing)
EN-11
Getting Ready to Play