Casio CTK-230 - Manual (Page 15)

E-13
277A-E-015A
Power Supply
This keyboard can be powered by current from a
standard household wall outlet (using the specified
AC adaptor) or by batteries. Always make sure you
turn the keyboard off whenever you are not using
it.
Using batteries
Always make sure you turn off the keyboard before
loading or replacing batteries.
To load batteries
1
Remove the battery compartment cover by
sliding it in the direction of the arrow
indicated in the figure.
2
Load 6 AA-size batteries into the battery
compartment.
• Make sure that the positive (+) and
negative (–) ends are facing correctly.
3
Replace the battery compartment cover by
sliding it.
The keyboard may not function correctly if you
load or replace batteries with power turned on. If
this happens, turning the keyboard off and then
back on again should return functions back to
normal.
Important Battery Information
■ The following shows the approximate battery
life.
Alkaline batteries ............................... 6 hours*
Manganese batteries .......................... 3 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.
• Dim power indicator
• 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
WARNING
Misuse of batteries can cause them to leak,
resulting in damage to nearby objects, or to
explode, creating the risk of fire and personal injury.
Always make sure you observe the following
precautions.
• Never try to take batteries apart or allow
them to become shorted
• Never expose batteries to heat or dispose
of them by incineration.
• Never mix old batteries with new ones.
• Never mix batteries of different types.
• Do not charge the batteries.
• Make sure the positive (+) and negative (–)
ends of the batteries are facing correctly.
+
–
+
–
+ +
–
–
+
–
+
–
+
–
+
–
+ +
–
–
+
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+
–
CTK230_E08_18.p65 03.10.7, 2:01 PM 13