Casio Lk 280 User Guide

							English
E-9
Getting Ready to Play
Either an AC adaptor or batteries can be used to power this 
Digital Keyboard. Normally, use of AC adaptor power is 
recommended.
 The AC adaptor does not come with this Digital Keyboard. 
Purchase it separately from your retailer. See page E-3 for 
information about options.
Make sure that you use only the AC adaptor specified for this 
Digital Keyboard. Use of a different type of AC adaptor can 
cause malfunction.
 Be sure to turn off Digital Keyboard power before 
connecting or disconnecting the AC adaptor.
 The AC adaptor will become warm to the touch after 
very long use. This is normal and does not indicate 
malfunction.
 To prevent breaking of the wire, take care to avoid 
putting any type of load on the power cord.
 Never insert metal, pencils, or any other objects into 
the product’s 9.5V DC terminal. Doing so creates the 
risk of accident.
 Be sure to turn off power before loading batteries.
 It is up to you to prepare six commercially available 
AA-size batteries. Do not use oxyride batteries or any 
other nickel based batteries.
1.Open the battery cover on the bottom of the 
Digital Keyboard.
2.Load six AA-size batteries into the battery 
compartment.
Make sure the positive + and negative - ends of the 
batteries are facing as shown in the illustration.
3.Insert the tabs of the battery cover into the 
holes on the side of the battery compartment, 
and close the cover.
■Low Battery Indication
The indicator shown below starts to flash to let you know 
when battery power is low. Replace the batteries with new 
ones.
Preparing the Music Stand
Power Supply
Using the AC Adaptor
Specified AC Adaptor: AD-E95100L 
(JEITA Standard plug)
No bending! No winding!
Music stand
Household power outlet
AC adaptorDC 9.5V terminal
Using Batteries
Tabs
Low battery indicator 
(flashes) 
						

							E-10
Playing the Digital Keyboard
1.Press 1.
This turns on power.
 To turn off the Digital Keyboard, press 
1 again.
2.Try playing something on the keyboard. Use 2 
to adjust volume.
 Turning off the Digital Keyboard causes most current 
settings to be cleared. The Digital Keyboard will revert 
to initial settings the next time you turn it on. 
This is true for all settings except for sample sound 
protection. Once you turn it on it remains on until you 
turn it off again.
 The message “Pls wait” will remain on the display 
while a data save operation is in progress. Do not 
perform any other operation while it is displayed. 
Turning off the Digital Keyboard or removing the 
memory card can cause Digital Keyboard data to be 
deleted or become corrupted.If you do not perform any operation on the Digital Keyboard 
for one of the trigger times noted below, Auto Power Off will 
turn off power.
■Disabling Auto Power Off
You can disable Auto Power Off to ensure that power is not 
turned off automatically during a concert, etc.
1.While holding down bn (TONE), turn on power.
Auto Power Off will be disabled.
While you are using the AC adaptor for power, the keyboard 
keys will light to remind you that power is on if you do not 
perform any operation for about six minutes. Power on alert is 
disabled while batteries are being used for power.
■Disabling Power On Alert
You can disable power on alert to ensure that keyboard keys 
do not light during a concert, etc.
1.Press ct (FUNCTION) and then use the br 
(10-key) [4] (
o) and [6] (p) keys to display 
“OTHER” (page E-7).
2.Press br (10-key) [9] (ENTER) key.
ct ct
5
52
21
1
bm
bm
br
brbn
bn
Turning on Power and PlayingAuto Power Off
During battery operation : 6 minutes
During AC adaptor operation : 30 minutes
Power On Alert (Using the AC Adaptor)
OTHER
Flashes 
						

							English
Playing the Digital Keyboard
E-11
3.Use the br (10-key) [4] (o) and [6] (p) keys to 
display “Demo2”.
4.Press the br (10-key) [–] key to select the OFF 
setting.
Using headphones cuts off output from the built-in speakers, 
which means you can practice playing even late at night 
without disturbing others.
 Be sure to turn down the volume level before connecting 
headphones.
 Headphones do not come with the Digital Keyboard.
 Use commercially available headphones. See page E-3 for 
information about options.
 Do not listen to very high volume output over 
headphones for long period. Doing so creates the risk 
of hearing damage.
 If you are using headphones that require an adaptor 
plug, make sure you do not leave the adaptor plugged 
in when removing the headphones.Touch Response alters tone volume in accordance with 
keyboard pressure (speed). This provides you some of the 
same expressivity you get on an acoustic piano.
Use the procedure below to control how much the volume of 
played notes change in accordance with playing speed. 
Select the setting that best matches your playing style.
1.Press ct (FUNCTION) and then use the br 
(10-key) [4] (o) and [6] (p) keys to display 
“Touch” (page E-7).
2.Use br (10-key) [–] and [+] keys to select one of 
the three Touch Response sensitivity settings.
Using Headphones
D e m o  2
PHONES/OUTPUT jack
Changing Keyboard Response to 
Touch Pressure 
(Touch Response)
Pressing fast produces 
louder notes.
Pressing slowly produces 
softer notes.
Do not try to use too much 
pressure.
Changing Touch Response Sensitivity
Off (oFF)Touch Response is turned off. Sound 
volume is fixed, regardless of key press 
speed.
Type 1 (1)Normal Touch Response
Type 2 (2)More sensitive Touch Response than Type 1
Tou c h 
						

							Playing the Digital Keyboard
E-12
1.Press ct (FUNCTION) and then use the br 
(10-key) [4] (o) and [6] (p) keys to display 
“OTHER” (page E-7).
2.Press br (10-key) [9] (ENTER) key.
3.Use the br (10-key) [4] (o) and [6] (p) keys 
to display “Contrast”.
4.Use the br (10-key) [–] and [+] keys to adjust 
the contrast.
 The contrast setting range is 01 to 17.The metronome lets you play and practice along with a steady 
beat to help keep you on tempo.
1.Press 5.
This starts the metronome.
2.Press 5 again to stop the metronome.
You can configure the metronome to use a bell sound for the 
first beat of each measure of the song you are playing.
 You can specify 0, or a value from 2 to 6 as the number of 
beat per measure.
 When playing a built-in song, the beats per measure setting 
(which determines when the bell sounds) is configured 
automatically for the currently selected song.
1.Hold down 5 until the beats per measure 
setting screen appears on the display.
 If you do not perform any operation for a few seconds 
after the beats per measure setting screen appears, the 
display will return to the screen displayed before you 
pressed 
5.
2.Use br (10-key) to enter the number of beats 
per measure.
 The bell will not sound if you specify 0 for this setting. In 
this case, all beats are indicated by a click sound. This 
setting lets you practice with a steady beat, without 
worrying how many beats there are in each measure.
Adjusting Display Contrast
OTHER
Flashes
Co n t r a s t
Using the Metronome
Start/Stop
Changing the Beats per Measure
This pattern changes with each beat.
Be a t 
						

							English
Playing the Digital Keyboard
E-13
Use the following procedure to change the tempo of the 
metronome.
1.Press bm.
Use y (slower) and t (faster) to change the tempo 
setting. Holding down either button changes the setting at 
high speed.
t and y at the same time will initialize the 
tempo setting in accordance with the currently selected 
song or rhythm.

bm causes the tempo value to flash on the 
display. While the tempo value is flashing, you can use 
br (10-key) to change it.
Note that you must input leading zeros, so 89 is input 
as 089.
 The tempo value will stop flashing if you do not perform 
any operation for a short while.
The metronome volume setting is changed automatically with 
the volume level of the currently selected Auto 
Accompaniment or song. The metronome volume cannot be 
adjusted independently.
 For information about changing the Auto Accompaniment 
volume, see page E-41.
 For information about changing the song volume, see page 
E-28.
 You cannot adjust the balance between the metronome 
and note volume during Auto Accompaniment and built-in 
tune play.
Changing the Metronome Tempo
Changing the Metronome Sound Volume
Tempo value (flashes) 
						

							E-14
Controlling the Keyboard Sounds
Your Digital Keyboard lets you select tones for a wide variety 
of musical instrument sounds, including violin, flute, orchestra, 
and more. Even the same song sound takes on a different feel 
by changing the instrument type.
1.Press bn (TONE).
2.Use br (10-key) to select the tone number you 
want.
The corresponding tone number and tone name will 
appear on the screen.
 Use the number buttons to enter the tone number. 
Specify three digits for the tone number.
 See the separate “Appendix” for a complete list of available 
tones.
 When one of the drum sets is selected, each keyboard key 
is assigned a different percussion sound.
3.Try playing something on the keyboard.
The tone of the instrument you selected will sound.
Pressing 
cr toggles between the piano and organ modes. 
Each press of 
cr toggles the tone setting between a piano 
tone (Tone Number 001) and an organ tone (Tone Number 
079).
In addition to the tone number, you also can configure the 
settings listed below.
br brbn
bn
co
cocp
cpcr
crct
ct
Select from a variety of musical 
instrument sounds
To select an instrument for playing
Example:To select 001, enter 03 03 1.
St .GrPno
Tone name Tone numberPlaying with a Piano or Organ Tone
Reverb : “06”
Transpose : “00”
Touch Response : Off: Returns to initial default
On: No change
Pedal Effect : SUS
Rhythm Number : “161” (When a piano tone is selected)
“094” (When an organ tone is selected)
Accompaniment : Rhythm part only
Local Control : On
Drum Assign : Off
Split : Off
Layer : Off
Chorus : Off
Octave Shift (Upper) : “0”
Auto Harmonize : Off
Arppegiator : Off
Scale : Equal 
						

							English
Controlling the Keyboard Sounds
E-15
You can use the following procedure to layer two different 
tones (such as piano and strings) so they sound 
simultaneously when you press a keyboard key.
1.Select the first tone you want to use.
Press bn (TONE) and then use br (10-key) to select the 
tone you want.
2.Press cp.
3.Use br (10-key) to select the second tone you 
want.
4.Play something on the keyboard.
Both tones sound at the same time.
5.Pressing cp again to unlayer the keyboard (so 
it plays only the tone you selected in step 1).
 Each press of cp toggles between layered (two tones) 
and unlayered (one tone).You can use the procedure below to assign different tones to 
the right range and left range of the keyboard, so it sounds 
like you are playing an ensemble between two instruments.
1.Select the tone for the right side range (page 
E-14).
Press bn (TONE) and then use br (10-key) to select the 
tone you want.
2.Press co.
3.Use br (10-key) to select the left side range 
tone you want.
4.Play something on the keyboard.
This will sound the tones assigned to the left and right 
side ranges of the keyboard.
Layering Two Tones
Example:032 ELEC.PIANO 1
Example:205 STRINGS
E . P i ano1
Lights
St r i ngs
Splitting the Keyboard between 
Two Different Tones
To select the two tones for a split keyboard
Example:303 FLUTE 1
Example:064 VIBRAPHONE 1
Flute 1
Lights
Vi bes 1
F3 VIBRAPHONE 1 FLUTE 1
Split point 
						

							Controlling the Keyboard Sounds
E-16
5.Pressing co again to unsplit the keyboard (so it 
plays only the tone you selected in step 1).
 Each press of co toggles between split (two tones) and 
unsplit (one tone).
 If you turn on both layer and split, layering will be applied to 
the right side range of the keyboard only.
1.While holding down co, press the keyboard key 
where you want the split point to be.
The key you press will become the lowest note of the right 
side range of the split keyboard.
Reverb adds reverberation to notes. You can change the 
duration of the reverb.
1.Press ct (FUNCTION) and then use the br 
(10-key) [4] (o) and [6] (p) keys to display 
“Reverb” (page E-7).
2.Use the br (10-key) [–] and [+] keys to select 
the reverb setting you want.
Chorus is a function that adds depth and breadth to notes. It 
makes you sound as if you are playing multiple instruments.
1.Press ct (FUNCTION) and then use the br 
(10-key) [4] (o) and [6] (p) keys to display 
“Chorus” (page E-7).
2.Use the br (10-key) [–] and [+] keys to select 
the chorus type you want.
There are five chorus types, plus an off setting.
 The actual effect produced by chorus depends on the tone 
you are using.
To change the split point
Example:Setting middle C (C4) as the split point.
Using Reverb
Off (oFF)Turns off reverb.
1 to 10The larger the number selected, the longer 
the reverb duration.
C4
Key name
Re v e r b
Indicator disappears when reverb is turned off.
Using Chorus
Ch o r u s
Indicator disappears when chorus is turned off. 
						

							English
Controlling the Keyboard Sounds
E-17
A pedal can be used to change notes in various ways while 
playing.
 A pedal unit does not come with the Digital Keyboard. 
Purchase one separately from your retailer. See page E-3 
for information about options.
Connect an optional pedal unit.
1.Press ct (FUNCTION) and then use the br 
(10-key) [4] (o) and [6] (p) keys to display 
“OTHER” (page E-7).
2.Press br (10-key) [9] (ENTER) key.
3.Use the br (10-key) [4] (o) and [6] (p) keys 
to display “Jack”.
4.Use the br (10-key) [–] and [+] keys to select 
the pedal effect you want.
 The following shows the available pedal effects.
The transpose feature lets you change the pitch, in semitone 
steps. A simple operation lets you instantly change the pitch 
to match that of a singer.
 The transpose setting range is –12 to +12 semitones.
1.Press ct (FUNCTION).
2.Use the br (10-key) [–] and [+] keys to select 
the transpose setting you want.
Using a Pedal
Connecting a Pedal Unit
Selecting the Pedal Effect
SUSTAIN/ASSIGNABLE JACK
OTHER
Flashes
Jack
Sustain 
(SUS)Sustains notes played while the pedal is 
depressed. Organ and other similar tone 
notes are sustained even if the pedal is not 
pressed.
Sostenuto 
(SoS)Sustains notes that are playing when the 
pedal is depressed before the keyboard keys 
are released.
Soft 
(SFt)Slightly softens notes played while the pedal 
is depressed.
Rhythm 
(rHy)Pressing the pedal starts and stops Auto 
Accompaniment or song playback.
Changing the Pitch 
(Transpose, Tuning, Octave Shift)
Changing the Pitch in Semitone Steps 
(Transpose)
Trans . 
						

							Controlling the Keyboard Sounds
E-18
Use the tuning feature when you need to adjust the pitch 
slightly to play along with another musical instrument. Also, 
some artists perform their music with slightly altered tuning. 
You can use the tuning feature to adjust tuning so it exactly 
matches a performance on a CD.
 The tuning feature specifies the frequency of the A4 note. 
You can set a frequency within the range of 415.5 to 
465.9 Hz. The initial default setting is 440.0 Hz.
1.Press ct (FUNCTION) and then use the br 
(10-key) [4] (o) and [6] (p) keys to display 
“Tune”.
2.Use the br (10-key) [–] and [+] keys to adjust 
the tuning.
 Performing this step causes the display to change from 
“Tune” to a value that indicates the current frequency 
setting as shown below. You can change the frequency 
in 0.1 Hz steps.
 Even if you do not perform a 
br (10-key) operation to 
adjust the tuning, the current frequency setting will 
appear automatically after a few seconds.Octave Shift lets you raise or lower the pitch of the keyboard 
notes in octave units.
 The octave shift setting range is –2 to +2 octaves.
 When using Split (page E-15), you can individually set the 
left and right keyboard ranges to the pitches you want.
1.Keep pressing cp until the screen shown below 
appears on the display.
If you want to use Split, turn on Split before pressing cp.
 If you do not perform any operation for a few seconds 
after this screen appears, the display will return to the 
previous screen automatically.
2.Use the br (10-key) [–] and [+] keys to shift the 
octave.
3.Press cp.
4.Press cp again.
Fine Tuning (Tuning)
Tune
440 . 0Hz
Octave Shift
 Split On : This step affects the right side keyboard 
range only.
 Split Off : This step affects the entire keyboard range.
 Split  On : The screen shown below will appear. Use the 
br (10-key) [–] and [+] keys to shift the 
octave for the left side keyboard range.
 Split Off : The screen shown below will appear. 
Advance to step 4.
Oc t Upper
Oc t L owe r