Casio CTK240ES1A User Manual download pdf (Page 16)

Power Supply

E-14

■ The following shows the approximate battery

life.

Zinc-carbon batteries ..........................6 hours

* The above value is standard battery life at

normal temperature, with the keyboard

volume at medium setting. Temperature

extremes or playing at very loud volume

settings can shorten battery life.

■ Any of the following symptoms indicate low

battery power. Replace batteries as soon as

possible whenever any of the following

occurs.

• Instrument does not turn on

• Display that is flickering, dim, or difficult to

read

• Abnormally low speaker/headphone volume

• Distortion of sound output

• Occasional interruption of sound when playing

at high volume

• Sudden power failure when playing at high

volume

• Flickering or dimming of the display when

playing at high volume

• Continued sound output even after you

release a key

• A tone that is totally different from the one that

is selected

• Abnormal rhythm pattern and Song Bank play

The Digital Keyboard will turn off automatically to

preserve battery power if you do not perform any

operation for about six minutes (Auto Power Off).

Hold down the TONE button while turning on the

keyboard to disable Auto Power Off.

• When Auto Power Off is disabled, the keyboard

does not turn off automatically no matter how

long it is left with no operation being performed.

• Auto Power Off is automatically enabled

whenever you turn on keyboard power.

All keyboard settings are returned to their initial

defaults whenever keyboard power is turned back

on after being turned off by operation of the

POWER/MODE switch or Auto Power Off.

Important Battery Information

Auto Power Off

To disable Auto Power Off

Settings

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Casio CTK240ES1A User Manual Page 16

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