Casio Lk40 Instruction Manual

E-9
* Attachment of Score Stand
Insert the score stand into the slot at the top of the keyboard as shown in the
illustration.
1 11 1
1POWER/MODE selector
2 22 2
2Power indicator
3 33 3
3VOLUME buttons
4 44 4
4SYNCHRO/FILL-IN button
5 55 5
5START/STOP button
6 66 6
6TEMPO buttons
7 77 7
7KEY LIGHT button
8 88 8
8STEP 1 icon
9 99 9
9STEP 2 icon
0 00 0
0STEP 3 icon
A AA A
ASONG BANK icon
B BB B
BDisplay
C CC C
CRHYTHM icon
D DD D
DTONE icon
E EE E
EPART SELECT button
F FF F
FTONE button
G GG G
GRHYTHM...

E-10
POWER/MODE
VOLUMEFILL-IN SYNCHRO/
STOP
FINGERED
CASIO CHORD
NORMAL ON
OFF
START/TEMPOKEY LIGHT
ONE KEY PLAYNUMBER
STEP0 1 4
7
2 5
8
3 6
9
5
4
12
Set the POWER/MODE 
selector to NORMAL.
Play the melody part on the keyboard.

Play the notes with the ONE KEY PLAY buttons.
•The accompaniment tempo automatically adjusts to play
along with your melody.

E-11
EFILL-INNCHRO/
STOP START/TEMPOKEY LIGHT
ONE KEY PLAYNUMBER3-STEP LESSONDEMO
STEP 2 STEP 1 STEP 3
RHYTHMTONE
TUNE0 1 4
7
2 5
8
3 6
9:VALUE UP
:VALUE DOWNTRANSPOSESONG BANKTEMPOTEMPO
4
ons.
 to play

Play the notes on the keyboard, pressing keys as they light.
•Keep the key depressed as long as it stays lit.
•If you selected any song from number 85 through 99, the lit key 
  goes out as soon as you press it.
•The key that corresponds to the next note 
  you need to play will flash.
•After you press...

E-12
Phones/Output Jack
Before connecting headphones or other external equipment, be sure to first turn
down the volume settings of the keyboard and the connected equipment. You can
then adjust volume to the desired level after connections are complete.
[Rear Panel]
PHONES/
OUTPUT DC 9VOUT MIDI IN
LEFT
RIGHTAUX IN or similar terminal
of audio amplifier
White
RedPIN plug Standard plug PHONES/OUTPUT Jack
Keyboard amp,
guitar amp,etc.
1
2 3
Connecting Headphones (Figure 1)
Connecting headphones cuts off...

E-13478B-E-015B
Keyboard or guitar amp To keyboard’s 
PHONES/OUTPUT 
jack
Standard plug
INPUT
Connection Example
Accessories and Options
Use only the accessories and options specified for this keyboard. Use of non-author-
ized items creates the danger of fire, electrical shock, and personal injury. 

E-14
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.
2. Load 6 AA-size batteries into the battery compartment.
•Make sure that the positive (+) and negative (–) ends
are facing...

E-15
Important!
Improper handling of batteries can cause them to burst and leak, which creates the
danger of personal injury or damage due to contact with battery acid. Be sure to note the
following important precautions.
•Always make sure that the positive (+) and negative (–) poles are facing correctly as
indicated inside the battery compartment.
•To avoid damage caused by leaking batteries, be sure to remove batteries from the
keyboard whenever you leave it unattended for long periods (such as when...

E-16
Caution!
•For safety sake, be sure to unplug the AC adaptor from the wall outlet whenever
leaving the keyboard unattended for a long time (such as when leaving on a trip).
•Always turn off the keyboard and unplug the AC adaptor from the wall outlet when
you are not using the keyboard.
Important!
•Make sure that the keyboard is turned off before connecting or disconnecting the AC
adaptor.
•Using the AC adaptor for a long time can cause it to become warm to the touch. This
is normal and does not...

E-17
This part of the manual provides you with the basic information you need to use your
keyboard.
To switch power on and off
1. Set the POWER/MODE selector to NORMAL.
2. Press the keyboard keys.
3. The VOLUME up and down arrow buttons are used to adjust main volume.
•Pressing  or  displays the currently set volume setting. Press  or
 again to change the volume setting.
•Volume can be adjusted over a range of 0 (minimum) to 9 (maximum).
•Volume is set to 7 when the power is turned on.
•A setting of 0...

E-18
3. Use the number buttons to input the 2-digit number that identifies the tone you want to
select.
•Always enter two digits for the tone number. If you enter only one
digit, the display will automatically return to the previous tone number
setting after a few seconds.
•If you change the tone setting while a keyboard key is depressed, the
tone does not change until you release the key and press a keyboard
key again.
•With certain tones (such as percussion sounds and sound effects), there
may be very...