Casio Lk40 Instruction Manual

							E-19 •There are no sounds assigned to any keyboard keys from B4 onward when the “99
PERCUSSION” tone is selected.
Digital Sampling
A number of the tones that are available with this keyboard have been recorded and
processed using a technique called digital sampling. To ensure a high level of total
quality, samples are taken in the low, mid, and high ranges and then combined to
provide you with sounds that are amazingly close to the originals. You may notice
very slight differences in volume or sound quality for some tones when you play
them at different positions on the keyboard. This is an unavoidable result of multiple
sampling, and it is not a sign of malfunction.
Polyphony
The term polyphony refers to the maximum number of notes you can play at the
same time. This keyboard has 12-note polyphony, which includes the notes you play
as well as the rhythms and auto-accompaniment patterns that are played by the
keyboard. This means that when a rhythm or auto-accompaniment pattern is being
played by the keyboard, the number of notes (polyphony) available for keyboard
play is reduced. Also note that some of the tones offer only 6-note polyphony.
•When rhythm or auto accompaniment is playing, the number of sounds simultane-
ously played is reduced.
•Though you can sound up to 12 notes at one time, only the last four keyboard keys
pressed light up.
Other Useful Functions
To change the key of the keyboard
The transpose feature of this keyboard lets you raise or lower its key in semitone
increments. This means you can easily match to suit someone’s voice, and you can
eliminate sharps and flats from music making it easier to play.
1. While in any mode besides the Song Bank Mode (indicated when the SONG BANK icon is
lit), hold down the TONE button and press the RHYTHM button.
•Perform step 2 within five seconds after performing
step 1.
2. Use the TEMPO buttons to change the key of the keyboard.
•Example: To change the tuning to B (indicated by -1
since it is one tone below C, which is the normal
tuning of the keyboard).
•See page E-20 for the indicator that appears for each
key.
Indicator re-
mains on the dis-
play for a few
seconds.
478B-E-021A
DFG
A
B C
BC
E
CDEF
GA BC
B (-1) tuning Normal tuning
TEMPO 
						

							E-20


Notes
•You cannot change the transpose setting while the keyboard is in the Song Bank
Mode.
•In step 2 of the above operation, you could also use the number buttons [0] to [5] to
specify C through F.
•Pressing both of the TEMPO buttons (
/) at the same time returns the transpose
setting to C(0).
•The transpose setting is automatically set to C(0) whenever you turn keyboard power
on.
•The transpose setting is automatically set to C(0) whenever you press the SONG
BANK button.
•The pitch of a transposed note depends on the tone you are using. If the transpose
operation causes a note to exceed its upper range, the same note from the lowest
octave available is substituted.
•The transpose operation does not affect tone number 99 (PERCUSSION) or auto-
accompaniment rhythms.
•Transposing tones 75 through 79 and 90 through 96 changes the range of keys to
which each of the tones is assigned.
•The transpose setting is automatically set to C(0) whenever you press the DEMO
button.
To tune the keyboard
A simple operation lets you tune the keyboard to another musical instrument.
1. While in any mode besides the Song Bank Mode (indicated when the SONG BANK icon is
lit), hold down the TONE button and press the SONG BANK button.
•Perform step 2 within five seconds after performing
step 1.
2. Use the TEMPO buttons to change the tuning of the keyboard.
Indicator remains on the
display for a few seconds.
478B-E-022A
B











CDE F GA C
F#GABCDEFABC#EKey :
Display :
: Pressing 
: Pressing 
TEMPO 
						

							E-21
Notes
•In step 2 of the above procedure, you could also use the number buttons to input a
value from 00 to 50.
•Pressing both of the TEMPO buttons (
/) at the same time returns the tuning
setting to 00.
•Pressing the SONG BANK button changes the tuning setting to 00.
•The tuning setting does not affect any of Song Bank tunes.
•You can tune the keyboard within a range of approximately ±50 cents (100 cents = 1
semitone).
•The tuning setting is automatically set to 00 whenever you turn the keyboard on.
•Pressing the DEMO button changes the tuning setting to 00.
•The tuning operation does not affect rhythm (percussion).
Playing the demo tunes
You can set up the keyboard to continually play its 100 built-in Song Bank tunes.
Keyboard keys light to indicate the melody notes of the demo tune as it plays.
To start demo tune play
1. Switch power on and adjust the volume level.
2. Press the DEMO button.
•Demo tune play continues in a sequential endless loop until you switch
it off.
•The number of the demo tune currently playing is shown on the dis-
play.
•You can play along on the keyboard while a demo tune is playing back.
3. You can change the demo tune play being played by pressing the number buttons.
•The Song Bank tunes play back in tune number sequence, starting from
the one you select.
To stop demo tune play
Press the DEMO button again to stop demo tune play.
478B-E-023A
DEMO
NUMBER0 1 4 7
2 5 8
3 6 9
DEMO
Notes
•Only the following buttons are enabled while a Song Bank tune is being played.
•VOLUME buttons
•Number buttons
•START/STOP button
•POWER/MODE selector (OFF)
•DEMO button
•KEY LIGHT button
•You cannot change the tone being used for the melody of a Song Bank tune. 
						

							E-22
Playing rhythms
This keyboard features a collection of 100 exciting built-in rhythm patterns. Each
pattern provides percussion back up for all your performances.
To select and play a rhythm
1. Set the POWER/MODE selector to NORMAL.
2. Find the rhythm you want to use in the “Rhythm List” (page A-3) and note its rhythm number.
3. Press the RHYTHM button.
•When you do, the RHYTHM icon lights.
•The number that appears on the display in-
dicates the currently selected rhythm.
4. Use the number buttons to input the 2-digit rhythm number for the rhythm you want to use.
•Example: To select “71 SAMBA”, input 7 and 1.
•Be sure to always specify a 2-digit number.
•If you discover a mistake before you input the second
digit, press the RHYTHM button to return to the
previously set rhythm number.
•You can change to another rhythm even while the
current rhythm is sounding.
5. Press the START/STOP button to start play of the rhythm.
•When you do, the selected rhythm starts to sound.
6. Use the TEMPO buttons to adjust the tempo of the rhythm.
•Pressing  or  displays the current tempo setting. Press  or 
again to change the tempo setting.
•Each time you press one of the TEMPO buttons while
the tempo value is displayed, the tempo setting
changes one step, within the range of 040 to 255.
•The initial default tempo setting when you turn on
power is 120.
•After displaying the current tempo setting by pressing a TEMPO but-
ton in step 6, you can also input the tempo setting you want by input-
ting a three-digit value with the number buttons.
478B-E-024A
POWER/MODE
FINGERED
CASIO CHORD
NORMAL ON
OFF
NUMBER0 1 4 7
2 5 8
3 6 9
FILL-IN SYNCHRO/
STOP START/
TEMPO
RHYTHM icon 
						

							E-23
Using auto-accompaniment
This keyboard features 100 accompaniment patterns that let you add full accompani-
ments to your performances automatically. With auto-accompaniment, part of the
keyboard is reserved as an accompaniment keyboard. As you play your chords on
the accompaniment keyboard, the accompaniment patterns adjusts automatically to
follow the progression you play.
You get a choice between two different methods for chord play. FINGERED lets you
play chords as you normally do, while CASIO CHORD makes it possible to play fully
formed chords with one finger.
About the accompaniment keyboard
The lower (left) 1.5 octaves are reserved for use as an accompaniment keyboard
whenever you select CASIO CHORD or FINGERED with the POWER/MODE selec-
tor. The panel above the accompaniment keyboard keys is marked with the names of
the notes they play. The remainder of the keyboard (the part that is not included in
the accompaniment keyboard) is called the melody keyboard. Please be sure to
remember these terms, because they will be used throughout the rest of this manual.
•Holding down either of the TEMPO buttons changes the tempo setting
at high speed.
•To reset the tempo to the standard value of each rhythm, press both
TEMPO buttons.
7. To stop rhythm play, press the START/STOP button again.
478B-E-025A
FILL-IN SYNCHRO/
STOP START/
Accompaniment
keyboardMelody keyboard
The entire keyboard can be used for melody play while
the POWER/MODE selector is set to NORMAL.           (                                                       ) 
						

							E-24
Using the CASIO CHORD system
The CASIO CHORD system lets you easily play the four main types of chords. Play of
chords is simplified as shown in the chart below.
Notes
•The bottom (leftmost) note that you play determines the name of the chord. If the
bottom note is a C for example, the keyboard produces a C chord.
•When pressing more than one accompaniment key, it makes no difference whether
the keys to the right of the bottom note are white or black.
To play a CASIO CHORD auto-accompaniment
1. Use the POWER/MODE selector to select CASIO CHORD.
2. Select an auto-rhythm as described under “To select and play a rhythm” on page E-22.
3. Start play of the rhythm.
•If you want start play of the normal rhythm pattern, press START/
STOP.
•You can also use synchro start (page E-27) to start rhythm play.
478B-E-026A
POWER/MODE
FINGERED
CASIO CHORD
NORMAL ON
OFF
FILL-IN SYNCHRO/
STOP START/
Pressing one
accompaniment
key
Pressing two
accompaniment
keys
Pressing three
accompaniment
keys
Pressing four
accompaniment
keysC
(C Major Chord)
Cm
(C Minor Chord)
C7
(C Seventh Chord)
Cm7
(C Minor Seventh
Chord)
Keys Chord Type Example
Major chord
Minor chord
Seventh chord
Minor seventh
chordCDE F GABCDE F
CDE F GAB C DE F
CDE F GABCDE F
CDE F GABCDE F 
						

							E-25
Using standard fingerings
The FINGERED mode lets you play a wider variety of chords. In this mode, you can
start play of an accompaniment pattern by pressing three or four of the accompani-
ment keyboard keys.
This keyboard is capable of recognizing 15 different chords. The following shows the
fingerings of these chords with a root of C. Note that you can omit the fifth notes
(which are shown inside parentheses in the illustrations below) to produce 7, m7,
maj7, add9 and mM7 chords.
478B-E-027A
4. Press either one or up to four keys on the accompaniment keyboard, and the corresponding
accompaniment starts to play automatically.
5. Continue pressing different keys on the accompaniment keyboard to play your chord
progression.
6. To stop auto-accompaniment play, press the START/STOP button again.
FILL-IN SYNCHRO/
STOP START/
C Cm Cdim Caug (*1) Csus4
C7 Cm7 Cmaj7 Cm7-5C7-5 (*1)
(          )(          )(          )
C7sus4 Cadd9 Cmadd9 CmM7 Cdim7(*1)
(          )(          )(          )
*1 With this chords, the lowest note in your fingering is always used as the root. Make
sure that your fingering correctly identifies the root you want to use. 
						

							E-26•See the “Fingered Chord Charts” on page A-4 for information on the fingerings of
chords for all roots.
To play a FINGERED auto-accompaniment
1. Use the POWER/MODE selector to select FINGERED.
2. Select an auto-rhythm as described under “To select and play a rhythm” on page E-22.
3. Start play of the rhythm.
•If you want start play of the normal rhythm pattern, press START/
STOP.
•You can also use synchro start (page E-27) to start rhythm play.
4. Play a chord on the accompaniment keyboard to start play of the auto-accompaniment.
5. Continue pressing keys on the accompaniment keyboard to play your chord progression.
6. To stop auto-accompaniment play, press the START/STOP button again.
Important!
•If you play one or two notes only in the left hand, or three notes that do not make up
a recognizable chord formation, no sound will be produced. FINGERED mode
requires a conventional three or four-note chord formation to produce an auto-
accompaniment. Also, note that auto-chords only work in conjunction with rhythm
patterns, and not independently of them.
Notes
•The above examples show only one of the possible fingerings for each chord. Note
that you can play the notes that form a chord in any combination. Each of the
following fingerings for example, produces the same C chord.
478B-E-028A
POWER/MODE
FINGERED
CASIO CHORD
NORMAL ON
OFF
FILL-IN SYNCHRO/
STOP START/
FILL-IN SYNCHRO/
STOP START/
Accompaniment keyboard 
						

							E-27
Improvising with the preset patterns
Pressing the START/STOP button to start rhythm play causes the normal version of
the pattern to be played. You can also play a variation of the rhythm using the
operation described below.
Using fill-in rhythm
You can insert a fill-in rhythm by pressing the SYNCHRO/FILL-IN button while an
auto-rhythm plays.
Using Synchro start
You can start the rhythm and accompaniment pattern at the same time, with your
play of the accompaniment keyboard. To do this, follow the steps below.
1. Set the POWER/MODE selector to the CASIO CHORD or FINGERED position.
2. Select an auto-rhythm.
3. Press the SYNCHRO/FILL-IN button.
4. Press the accompaniment keys to play the first chord. As soon as you do, the auto-
accompaniment pattern begins to play.
5. To stop the auto-accompaniment pattern play, press the START/STOP button.
Note
•If you set the POWER/MODE selector to NORMAL in step 1 on page E-22, the
operation in step 4 starts play of the rhythm (percussion instruments) only.
478B-E-029A
FILL-IN SYNCHRO/
STOP START/
POWER/MODE
FINGERED
CASIO CHORD
NORMAL ON
OFF
FILL-IN SYNCHRO/
STOP START/
FILL-IN SYNCHRO/
STOP START/ 
						

							E-28
Using Three Step Lesson System
Even individuals who cannot play the keyboard at all can follow along with the 100
built-in Song Bank tunes with the ONE KEY PLAY buttons. You can also use the
Three Step Lesson System to learn at your own pace. Play slowly at first until you are
able to play along at normal speed.
Of the 100 built-in tunes, numbers 00 through 84 feature auto-accompaniment (auto-
accompaniment tunes), while 85 through 99 are played using both hands (two-hand
tunes).
The Three Step Lesson System can be used with the following three-step lesson plan
to master keyboard play.
Three Step Lesson System
Step 1: Easy Play
Pressing the ONE KEY PLAY buttons plays the melody for an auto-accompa-
niment tune or the right hand part for two-hand tunes. In both cases, the auto-
accompaniment (the right hand part in the case of two-hand tunes) is played
automatically by the keyboard. In place of the ONE KEY PLAY buttons, you
can also press any key of the keyboard to play the melody or right hand part.
The purpose of this step is to familiarize yourself with the timing required to
play melody notes.
Step 2: Slow Play
Press the keys that light as they teach you the correct notes to play. You can
play at the pace you want, because the auto-accompaniment or left hand part
waits until you press the correct key.
Step 3: Normal Play
At this level, the keyboard’s keys still light to indicate which notes to play, but
they no longer wait for you to press the correct key. The auto-accompaniment
or left hand part is played at normal speed.
Notes
•You may not be able to see the keyboard keys light under direct sunlight or in other
brightly lit areas.
•You can press the ONE KEY PLAY, STEP 1, STEP 2, and STEP 3 buttons at any time,
except while a demo tune is playing. To return the keyboard to its normal mode,
press the SONG BANK button.
478B-E-030A