Casio Lk55 Instruction Manual

							E-19
Basic Operations
This section provides information on performing basic
keyboard operations.
To play the keyboard
1Press the POWER button to turn the keyboard on.
2Set the MODE switch to NORMAL.
3Use the VOLUME slider to set the volume to a
relatively low level.
4Play something on the keyboard.
•The keyboard’s initial power on default setting is Song
Bank Mode. The tone that is initially assigned to the
keyboard is 096 FLUTE 1, which is the tone used by
Song Bank tune number 00.
Selecting a Tone
This keyboard comes with 255 built-in tones. Use the
following procedure to select the tone you want.
To select a tone
1Find the tone you want to use in the TONE List and
note its tone number.
•Not all of the available tones are shown on the tone
list printed on the keyboard console. For a complete
list, see the “Tone List” on page A-6.
2Press the TONE button.
•If you were in the Song Bank Mode when you pressed
the TONE button, this will cause the SONG BANK
button to flash. If you were in the Piano Bank Mode,
the PIANO BANK button will flash. If you were in
the Sing Along Mode, the SING ALONG button will
flash.
3Use the number buttons to input the three-digit tone
number of the tone you want to select.
Example: To select “049 ACOUSTIC BASS”, input 0, 4
and then 9.
•Press the flashing button (SONG BANK, PIANO
BANK or SING ALONG) to exit the tone select
operation and stop the flashing.
NOTE
•Always input all three digits for the tone number,
including leading zeros (if any). If you input one or two
digits and stop, the display will automatically clear your
input after a few seconds.
•You can also increment the displayed tone number by
pressing [+] and decrement it by pressing [–].
•When one of the drum sets is selected (tone numbers
246 through 254), each keyboard key is assigned a
different percussion sound. See page A-3 for details.
Indicator appears
Ac o . Bass
642A-E-021A
PIANO BANKTONE
SONG BANK
SING ALONG
Number buttons
[+] / [–]
MODE
POWER
VOLUME
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							E-20
Polyphony
The term polyphony refers to the maximum number of notes
you can play at the same time. The keyboard has 24-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 12-note
polyphony.
•When rhythm or auto accompaniment is playing, the
number of sounds simultaneously played is reduced.
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 tonal 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.
Basic Operations
642A-E-022A
Turning the Key Light System On and
Off
Use the following procedure when you want to turn the key
light system on or off.
To turn the key light system on and off
1Press the KEY LIGHT button to toggle the key light
system on and off.
•The KEY LIGHT indicator disappears when the key
light system is turned off.
NOTE
•The key light system is turned on automatically whenever
you turn on keyboard power.
KEY LIGHT
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							E-21
Using the PIANO BANK Button
Pressing the PIANO BANK button provides instant access to
piano tones and piano tune selection.
Initial Piano Bank Setting
Tone: 000 Stereo Piano
To use the piano bank
1Press the PIANO BANK button.
•This causes the PIANO BANK button to light.
2Now try playing something on the keyboard.
•The notes you play sound with a piano tone.
3If you want to playback the built-in tune, press the
PLAY/STOP button.
•This causes the currently selected tune to play in an
endless loop.
•To stop playback, press the PLAY/STOP button again.
Practicing on the Piano
Indicator appears
642A-E-023A
PIANO BANK
PLAY/STOP
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							E-22642A-E-024A
Playing a Built-in Tune
Your keyboard comes with a total of built-in 100 tunes. You
can play back built-in tunes for your own listening pleasure,
or you can use them for practice and even sing-along. Built-
in tunes are divided between the two groups described below.
•Song Bank/Sing Along Group: 50 tunes for one-hand play
The tunes in this group are Auto Accompaniment tunes. A
Song Bank Group tune can be used during a lesson for
melody part practice. If you connect a microphone to the
keyboard and enter the Sing Along Mode*, you can sing
along with the built-in tune.
* The Sing Along Mode reduces the volume of the melody
part of the built-in tunes and changes the tone selection
to one that makes it easier for a vocalist to follow.
•Piano Bank Group: 50 tunes for two-hand play
The piano tunes in this group are subdivided between 20
etudes and 30 concert pieces. A Piano Bank Group tune can
be used during a lesson for left-hand part and right-hand
part practice.
To play back a Song Bank tune
PREPARATION
•Adjust the main volume (page E-19).
1Find the tune you want to play in the SONG BANK/
SING ALONG List, and note its number.
•See page A-10 for the Song Bank/Sing Along List.
2Press the SONG BANK button to enter the Song
Bank Mode.
•This causes the SONG BANK button to light.
3Use the number buttons to input the tune’s two-
digit number.
Example: To select “44 ALOHA OE”, input 4 and then 4.
NOTE
•Tune Number 00 is the initial default Song Bank tune
setting whenever you turn on keyboard power.
•You can also increment the displayed tune number by
pressing [+] and decrement is by pressing [–].
4Press the PLAY/STOP button to start play of the tune.
5Press the PLAY/STOP button to stop playback of
the Song Bank tune.
•The tune you select continues to play until you stop
it.
Al ohaOe
Song number Song name
Number buttons
[+] / [–]
TEMPO
PIANO BANKSONG BANK
PLAY/STOP
Indicator appears
Al ohaOe
Fingering Staff display
Chord name
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							E-23
Playing a Built-in Tune
642A-E-025A
To play back a Piano Bank tune
1Find the tune you want to play in the PIANO BANK
List, and note its number.
•See page A-11 for the Piano Bank List.
2Press the PIANO BANK button to specify the Piano
Bank group.
NOTE
•Pressing the PIANO BANK button changes the tone to
stereo piano (Tone Number 000).
3Use the number buttons to input the two-digit tune
number you looked up in step 1.
Example: To select tune number 16 (Ode To Joy), input
1 and then 6.
NOTE
•Tune Number 00 is the initial default Piano Bank tune
setting whenever you turn on keyboard power.
•You can also change the displayed tune number using
the [+] and [–] buttons.
4Press the PLAY/STOP button to start playback.
5To stop playback, press the PLAY/STOP button.
•The tune you select continues to play until you stop
it.
Musical Information System
When the keyboard is playing one of its built-in tunes, the
display shows a variety of information about the tune.
Example: Display during Song Bank play
NOTE
•Chord names are not displayed for Piano Bank tunes.
Adjusting the Tempo
Each tune has a preset default tempo (beats per minute) that
is set automatically whenever you select a tune. While the
tune is playing, you can change the tempo setting to a value
in the range of 40 to 255.
To set the tempo
1Use the TEMPO buttons to set the tempo.
 : Increases the tempo value. : Decreases the tempo value.
NOTE
•While the tempo value is flashing, you can also use the
number buttons or [+] and [–] to input a three-digit value.
Note that you must input leading zeros, so 90 is input
as 090.
•Pressing both the 
 and  TEMPO buttons at the same
time automatically returns the currently selected rhythm
to its default tempo.
•Piano Bank tunes have tempo changes part way through
in order to produce specific musical effects. Note that
the tempo setting automatically returns to the default
whenever a tempo change occurs within one of these
tunes.
OdeT Jooy
Flash
Tempo value
Al ohaOe
Fingering Staff display
Chord nameIndicator appears
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Playing a Built-in Tune
642A-E-026A
To pause playback
1Press the PAUSE button while a tune is playing to
pause it.
2Pressing the PAUSE button again resumes play from
the point where it was paused.
To fast reverse
1While a tune is playing or paused, hold down the
REW button to skip in a reverse direction at high
speed.
•The fast reverse operation skips back one measure at
a time.
•The measure and beat numbers on the display change
while the fast reverse operation is being performed.
2Releasing the REW button starts song playback from
the measure whose number is shown on the display.
NOTE
•Fast reverse does not work while tune play is stopped.
•Certain playback conditions can cause it to take some
time before fast reverse starts after you press the REW
button.
To fast forward
1While a tune is playing or paused, hold down the
FF button to skip forward at high speed.
•The fast forward operation skips forward one measure
at a time.
•The measure and beat numbers on the display change
while the fast forward operation is being performed.
2Releasing the FF button starts song playback from
the measure whose number is shown on the display.
NOTE
•Fast forward does not work while tune play is stopped.
Beat number Measure number
TONE
Number buttons
[+] / [–]
PLAY/STOPPAUSEREWFF
PIANO BANKSONG BANK
Beat number Measure number
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Playing a Built-in Tune
642A-E-027A
To change the melody tone
1Press the TONE button.
2Find the tone you want in the TONE List, and then
use the number buttons to input its three-digit
number.
Example: To select “057 VIOLIN”, input 0, then 5, then
7.
•You can select any one of the keyboard’s 255 built-in
tones.
NOTE
•You can also use the [+] and [–] buttons to change the
melody tones.
•For two-hand tunes (Piano Bank tunes), the same tone
is applied for both the left and right hand parts.
•Specifying the tune number for the same tune that is
currently selected returns the melody tone to the default
setting for that tune.
Vol ni i
To play all tunes in succession
1Press the SONG BANK button and PIANO BANK
button at the same time.
•Playback starts from Song Bank tune number 00,
followed in sequence by Piano Bank tunes.
•Both the SONG BANK button and PIANO BANK
button are lit during demo play.
2To stop tune play, press the PLAY/STOP button.
NOTE
•While a tune is playing, you can use the number buttons
or [+] and [–] to change to another tune.
•You can play along with the tunes on the keyboard.
Indicator appears
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							E-26
Two-hand Tunes (Piano Bank)
These types of tunes are played with both hands, as in a piano
solo. When using these tunes for a 3-step lesson, you can
practice playing along with both the left hand and right hand
parts.
Key Lighting System Operation and
Display Contents During 3-step
Lesson Play
Whenever you select an Auto Accompaniment tune for 3-
step lesson play, the key lighting system shows you which
keys to press, while the display shows you the notes and their
fingerings.
Note Pitch
The keyboard key that should be pressed lights, while the
actual pitch of the note appears in the display’s staff notation
area. The fingers you should use to play the notes are also
shown on the display.
Note Length
Keyboard keys stay lit for as long as the note should be
played. The staff notation and fingerings also remain on the
display for the length of the note.
Next Note
The keyboard key for the next note to be played flashes, while
a number appears on the display near the finger you should
use to play the next note.
Series of Same Pitch Notes
The keyboard key light turns off momentarily between the
notes and lights again for each successive note. The staff
notation and fingerings also turn off and back on again.
3-Step Lesson
The 3-step lesson feature takes you through the three distinct
steps described below to help you learn to play tunes on the
keyboard.
Step 1 – Master the timing.
In this step, pressing any key on the keyboard plays the
correct note, so you can concentrate on getting the timing
right without worrying about playing the right note.
Accompaniment (left-hand part) waits until you press a key
before proceeding to the next phrase.
Step 2 – Master the notes.
In this step, you use the display to learn which fingers you
should use and how loud or soft to play, and the key light
system to learn which keyboard keys to press.
Accompaniment (left-hand part) waits until your play the
correct note, so you can learn at your own pace.
Step 3 – Play at normal speed.
This is where you enjoy actually playing the tunes you learn
using Step 1 and Step 2. The key light system still shows you
which keyboard keys to press, but accompaniment proceeds
at normal speed regardless of whether or not you play the
correct notes.
Tune Types and Their Parts
The built-in tunes of this keyboard are divided between two
basic groups: Auto Accompaniment tunes (Song Bank) and
two-hand accompaniment tunes (Piano Bank). The parts
available for 3-step lesson practice depend on the type of tune
you are using.
Auto Accompaniment Tunes (Song Bank)
As their name suggests, these tunes are made up of an Auto
Accompaniment part and a melody part. When using these
tunes for a 3-step lesson, you can practice playing along with
the melody (right hand) part only.
Advanced 3-Step Lesson
642A-E-028A
With the Advanced 3-Step Lesson System, you can practice
the built-in tunes and even plot your progress according to
the evaluation points the keyboard awards you.
The 3-Step Lesson System lets you practice at your own pace.
Fingerings and notes appear on the keyboard’s display, and
the keys you should press light up on the keyboard to help
you on your way to keyboard mastery.
With the Evaluation Mode, you can get an idea of how much
you are progressing. You can even find out what phrases in
your performance need more work and concentrate your
practice there.
Lesson Progress
Step 1
Targeted Practice
Evaluation 1Evaluation 2Step 2Step 3
Example:When play requires pressing keys with fingers 3, 2,
and then 1
Flash Next note
Current note
Lit
FlashLit
Flash 1st Note 2nd Note 3rd Note
Lit
Key light
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Advanced 3-Step Lesson
642A-E-029A
NOTE
•Note length is not indicated when you are using two-
hand tunes with 3-step lesson Steps 1 and 2. As soon
as you press a lit key, it goes out and the next key to be
played starts to flash.
•Note length is indicated by the key light system when
you use a two-hand tune with Step 3. In this case, the
next key to be pressed does not flash when you press a
lit key and the next finger number does not appear on
the display. Only the current finger number is shown.
3-step Lesson Tempo Setting
Use the procedure under “Adjusting the Tempo” on page E-
23 to adjust the tempo for 3-step lesson play.
Dynamic Marks
The dynamic marks listed below appear on the display while
tunes are playing. Adjust the pressure you apply to the
keyboard in accordance with the mark that is on the display.
pianissimo: Very soft
piano: Soft
mezzo piano: Moderately soft
mezzo forte: Moderately loud
forte: Loud
fortissimo: Very loud
cresc. () decrescendo: Gradually softer
Evaluation Mode
The keyboard’s Evaluation Mode awards points to your
performances during Step 1 and Step 2 of the 3-Step Lesson.
A perfect score is 100. Also, the Evaluation Mode provides
comments about your play, both on the monitor screen and
by means of a simulated human voice.
Evaluation Mode Display
Level Indicator (9 Levels): This indicator shows the evaluation
of your current performance at a glance. The more segments
that appear, the higher your points.
Example: 50 points
Timing Indicator: In the Evaluation Mode, the configuration
of the star changes with each note to let
you know how your timing is. The more
stars, the better your timing.
Using Tone and Voice Guide
When the keyboard senses that your timing is off, it will let
you know by changing the notes you play to a tone that is
different from the one you currently have selected. In the
Evaluation Mode, a simulated human voice will also tell you
your evaluation level. The sound effect keeps you informed
of when your evaluation level is about to change.
Expressions
“Good”

“That’s close”
Evaluation Ranges
“Nice try!”
“Keep trying!”
“Take your time”: This expression is used if you do not
play the correct note for a long time.
Evaluation Results
After you finish playing, the keyboard calculates an
evaluation of your total performance, from beginning to end,
and displays your total score on the monitor screen. The
greater the score, the higher your evaluation is.
Evaluation Rank Display Messages and Sound Effects
“****” : indicates that the Evaluation Mode was exited
before an evaluation result could be obtained.
NOTE
•If your play is flawless, the message “Perfect!” appears
before the evaluation result.
•If you press the PLAY/STOP button and interrupt the
Evaluation Mode part way through, the monitor screen
shows the evaluation points you have accumulated up
to that point. In this case, the keyboard does not display
a message and play a sound effect.
Using the Lesson Functions and
Evaluation Mode
Perform the following steps to master your favorite tunes.
Display Message Sound Effect
“Bravo!”Applause and 
cheering
“Great”Applause only Evaluation Ranges
“Not bad!”None
“Again!”None 
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•If you accidentally press more than one key in
succession, accompaniment is played for the
corresponding number of notes.
•Pressing more than one key at the same time counts
as a single note. Pressing a key while another key is
held down is counted as two notes.
4To stop play at any time, press the PLAY/STOP
button.
NOTE
•Left hand practice can also be performed with Piano
Bank tunes. Simply select one of the two-hand tunes in
step 1 of the above procedure, and then press the LEFT
button following step 2.
•3-step lesson does not allow simultaneous practice of
both hands.
•You can also use fast forward and fast reverse operations
with Step 1 play.
•You cannot pause Step 1 play.
•Rhythm does not sound during Step 1 play.
Evaluation 1:  Find out how the
keyboard evaluates your Step 1 play.
Use the SCORING 1 button to check the evaluation of your
play in Step 1.
1Press the SCORING 1 button.
•This causes the SCORING 1 indicator to appear on
the display.
•A count beat sounds and then evaluation mode starts.
642A-E-030A
Step 1 – Master the timing.
1Select the tune you want to use.
2Press the STEP 1 button to start Step 1 play.
•After a count sounds, they keyboard stands by and
waits for you to play the first note of the tune.
•The hand you should use is indicated by arrows
around it.
3Press any keyboard keys to play the notes.
•The key for the next note to be played flashes while
the keyboard waits for you to play it. When you press
any key to play the note, the key remains lit as the
note plays.
•Accompaniment (left-hand part) waits until you press
any key to play a note.
Indicators
Advanced 3-Step Lesson
PIANO BANK
LEFT SONG BANK
SCORING2
PLAY/STOPSTEP1STEP2 SCORING1
Al ohaOe
FingeringIndicator appears Note pitch
Indicator appears
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