Casio Lk90tv Instruction Manual

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Polyphony
The term polyphony refers to the maximum number of notes
you can play at the same time. The keyboard has 32-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 16-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
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.
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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.
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
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PIANO BANK
PLAY/STOP
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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: 65 tunes for one-hand play
The tunes in this group are Auto Accompaniment tunes. 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: 35 tunes for two-hand play
The piano tunes in this group are subdivided between 10
etudes and 25 concert pieces.
To play back a Song Bank tune
PREPARATION
•Adjust the main volume (page E-18).
1Find the tune you want to play in the SONG BANK/
SING ALONG List, and note its number.
•See page A-9 for the Song Bank/Sing Along List.
2Press the SONG BANK button to enter the Song
Bank Mode.
3Use the number buttons to input the tune’s two-
digit number.
Example: To select “58 ALOHA OE”, input 5 and then 8.
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
Fingering Staff display
Chord name
Indicator appears
AlohaOe
Song number Song name
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PIANO BANKREPEATSONG BANK DEMOREW
Number buttons
PLAY/STOPPAUSEFFTEMPO
[+] / [–]
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Playing a Built-in Tune
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-9 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 07 (Ode To Joy), input
0 and then 7.
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
The tempo (beats per minute) can be set to a value in the
range of 30 to 255. The tempo value you set is used for Song
Bank, Piano Bank, sing along, 3-step lesson, and Auto
Accompaniment chord play, as well as playback from Song
Memory, SmartMedia card, and metronome operation.
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.
Od e T oo Jy
Indicator appears
Al ohaOe
Fingering Staff display
Chord name
Flash
Tempo value
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Playing a Built-in Tune
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.
Looping a Musical Phrase
You can select one or more measures and “loop” them, which
means that they play again and again until you stop playback.
1While the tune is playing, press the REPEAT button
while the measure you want to start from is playing.
•This causes the repeat indicator to flash on the display,
and displays the measure number of the start
measure.
2When playback is within the measure you want to
specify as the end of the loop, press the REPEAT
button again.
•This displays the measure number of the end measure,
and starts repeat play of the loop.
•To cancel repeat play of a loop, press the REPEAT
button again so the repeat indicator is not displayed.
Beat number Measure number
Beat number Measure number
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Playing a Built-in Tune
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 264 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.
To play all tunes in succession
1Press the DEMO button.
•Playback starts from Song Bank tune number 00,
followed in sequence by Piano Bank tunes.
2To stop tune play, press the DEMO button again.
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.
Vio l in
Indicator appears
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Lesson Parts
3-Step Lesson lets you practice the right-hand part, left-hand
part, or the parts for both hands.
VIDEO OUT Jack
Connect the keyboard to a TV equipped with a video input
jack and you can view lesson information on your TV screen.
•See “VIDEO OUT Jack” on page E-17 for information.
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.
Advanced 3-Step Lesson
With the 3-Step Lesson System, you can practice built-in tunes
and SMF data from a SmartMedia card, and even plot your
progress according to the evaluation points the keyboard
awards you.
*See “Using a SmartMedia card” on page E-56 for
information about using the SMF data from a SmartMedia
card for playback.
Lesson Progress
Step 1
Targeted Practice
Evaluation 1Evaluation 2Step 2Step 3Evaluation 3
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PIANO BANK
SCORING
PRACTICE PHRASE
SONG BANK
Number buttons
PLAY/STOP
STEP LEFTRIGHT
SPEAKTEMPO
[+] / [–]
METRONOME
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Advanced 3-Step Lesson
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
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-
22 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.
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Indicators
Advanced 3-Step Lesson
Al ohaOe
Fingering
Indicator appears Note pitch
“****” : 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.
Step 1 – Master the timing.
1Select the tune you want to use.
2Press the RIGHT button or the LEFT button to
specify the part you want to practice.
•If you want to practice both hands, press both buttons
at the same time.
•Indicators appear around the hand on the display
whose part is selected for practice.
Display Message Sound Effect
“Bravo!”Applause and 
cheering
“Great!”Applause only Evaluation Ranges
“Not bad!”None
“Again!”None 
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
3Press 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.
•Voice fingering guide will use a simulated human
voice to call out fingering numbers during one-hand
part practice. See “Voice Fingering Guide” on page
E-30 for details.
4Press 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.
•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.
5To stop play at any time, press the PLAY/STOP
button.
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Indicator appears
Advanced 3-Step Lesson
Br av! o
Al ohaOe
Fingering
Indicator appears
Indicator appears
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.
2Play in accordance with the guidance on the
monitor screen and as told by the voice.
•To stop evaluation, press the PLAY/STOP button. This
displays only the points accumulated up to that point.
3After you finished playing, your evaluation result
appears on the display.
•For information about evaluation ranks and sound
effects, see “Evaluation Results” on page E-27.
•The keyboard will tell you where you scored the
lowest during your performance, so you can find out
where you need the most work. See “Using the Phrase
Practice Mode” on page E-29 for more information.
•Pressing the SONG BANK button or PIANO BANK
button returns to the tune selection screen.
Step 2 – Master the notes.
1Select the tune you want to use.
2Press the RIGHT button or the LEFT button to
specify the part you want to practice.
•If you want to practice both hands, press both buttons
at the same time.
3Press the STEP 2 button to start Step 2 play.
•After a count sounds, the keyboard stands by and
waits for you to play the first note of the tune.
•Voice fingering guide will use a simulated human
voice to call out fingering numbers during one-hand
part practice. See “Voice Fingering Guide” on page
E-30 for details.
4Follow the key light system to press the correct
keyboard keys and 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.
•If multiple keys light on the on-screen keyboard guide
when you are using a two-hand tune, it means that
you must press all of the keys that are lit.
5To stop play at any time, press the PLAY/STOP
button.
Evaluation 2:  Find out how the
keyboard evaluates your Step 2 play.
1Press the SCORING 2 button.
•This causes the SCORING 2 indicator to appear on
the display.
•A count beat sounds and then evaluation mode starts.
*The remainder of this procedure is identical to that
for Evaluation 1.
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