Using The Ac Adaptor; Auto Power Off; Settings - Casio CTK-491 User Manual

Using the AC Adaptor

Make sure that you use only the AC adaptor specified for
this keyboard.
Specified AC Adaptor: AD-5
[Rear Panel]
DC 9V jack
Also note the following important warnings and precautions
when using the AC adaptor.
WARNING
Misuse of the AC adaptor creates the risk of fire and electric shock.
Always make sure you observe the following precautions.
• Be sure to use only the AC adaptor that is specified for this
product.
• Use only a power source whose voltage is within the rat-
ing marked on the AC adaptor.
• Do not overload electrical outlets and extension cords.
• Never place heavy objects on the cord or subject it to
heat.
• Never try to modify the cord or subject it to excessive
bending.
• Never twist or stretch the cord.
• Should the electric cord or plug become damaged, con-
tact your original retailer or authorized CASIO Service
Provider.
• Never touch the AC adaptor while your hands are wet.
Doing so creates the risk of electric shock.
CAUTION
Misuse of the AC adaptor creates the risk of fire and electric shock.
Always make sure you observe the following precautions.
• Do not locate the electric cord near a stove or other sourc-
es of heat.
• Never pull on the cord when unplugging from the electri-
cal outlet. Always grasp the AC adaptor when unplug-
ging.
• Insert the AC adaptor into the wall outlet as far as it will
go.
• Unplug the AC adaptor from the wall outlet during light-
ening storms or before leaving on a trip or other long-
term absence.
• At least once a year, unplug the AC adaptor from the wall
outlet and wipe away any dust that is built up in the area
around the prongs of the plug.
E-14
CTK481_E08_17.p65
AC adaptor AD-5
AC output
Page 14
IMPORTANT!
• Make sure that the keyboard is turned off before connect-
ing or disconnecting the AC adaptor.
• Using the AC adaptor for a long time can cause it to be-
come warm to touch. This is normal and does not indicate
malfunction.

Auto Power Off

When you are using battery power, keyboard power turns
off automatically whenever you leave it on without perform-
ing any operation for about 6 minutes. When this happens,
use the POWER/MODE switch to turn power back on.
NOTE
• Auto Power Off is disabled (it does not function) when you are
using the AC adaptor to power the keyboard.
To disable Auto Power Off
Hold down the TONE button while turning on the keyboard
to disable Auto Power Off.
NOTE
• 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.

Settings

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.
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