Casio Lk40 Instruction Manual

							LK40/42-ES-1
P
USER’S GUIDE
GUÍA DEL USUARIO 
						

							478B-E-002A
GUIDELINES LAID DOWN BY FCC RULES FOR USE OF THE UNIT IN
THE U.S.A. (not applicable to other areas).
NOTICE
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
FCC WARNING
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
CASIO ELECTRONICS CO., LTD.
Unit 6, 1000
North Circular Road
London NW2 7JD, U.K.
This mark is valid in the EU countries only.
Please keep all information for future reference. 
						

							E-1478B-E-003A
Welcome...
To the happy family of satisfied CASIO electronic musical instrument owners! To get the most
out of the many features and functions of the keyboard, be sure to carefully read this manual
and keep it on hand for future reference.
Important!
When using batteries, be sure to replace them or shift to one of the alternate power sources
whenever you notice any of the following symptoms.
• Dim power supply indicator
• Instrument does not turn on
• Dim, difficult to read display
• Abnormally low speaker/headphone volume
• Distortion of sound output
• Occasional interruption of sound when playing at high volumes
• Sudden power failure when playing at high volumes
• Dimming of the display when playing at high volume
• Abnormal rhythm pattern and demo tune play
• Dimming of keyboard lights when notes sound
• Loss of power, sound distortion, or low volume when playing from a connected computer
or MIDI device
Main Features
❑100 amazingly realistic tones
❑Enhanced auto-accompaniment function for greater versatility
• 100 built in auto-accompaniment patterns.
❑100 Built-in Song Bank tunes
• A total of 100 built-in Song Bank tunes comes built in for playback enjoyment or play-along
practice.
❑A three-step lesson function lets you develop your musical skills by following
the keys as they light (Three Step Lesson System).
• First you become familiar with the timing of the notes by watching the keys light as you
playback one of the 100 built-in Song Bank tunes. Next, practice playing along at a pace
that’s comfortable for you. Finally, try playing along at the normal tempo for the Song Bank
tune.
❑Auto Accompaniment
• Simply specify a chord and the keyboard automatically produces the matching rhythm,
bass, and chord patterns. One-touch fill-ins make accompaniments sound interesting and
natural.
❑Transpose Function
• An easy operation instantly changes the key of the keyboard.
❑MIDI compatibility
• Connecting to another MIDI device lets you sound notes on both this keyboard and the
connected device by playing on this keyboard. You can even playback commercially avail-
able pre-recorded MIDI data.
E-1 
						

							E-2
Safety Precautions
Symbols
Various symbols are used in this operating manual and on the product itself to ensure that the
product is used safely and correctly, and to prevent injury to the user and other persons as well
as damage to property. Those symbols along with their meanings are shown below.
Symbol Examples
This triangle symbol () means that the user should be careful. (The example at
left indicates electrical shock caution.)
This circle with a line through it (
) means that the indicated action must not be
performed. Indications within or nearby this symbol are specifically prohibited.
(The example at left indicates that disassembly is prohibited.)
The black dot (
) means that the indicated action must be performed. Indications
within this symbol are actions that are specifically instructed to be performed.
(The example at left indicates that the power plug must be unplugged from the
electrical socket.)
WARNING
This indication stipulates matters that have the risk of causing death or serious injury if the
product is operated incorrectly while ignoring this indication.
CAUTION
This indication stipulates matters that have the risk of causing injury as well as matters for
which there is the likelihood of occurrence of physical damage only if the product is
operated incorrectly while ignoring this indication.
 WARNING
Please use caution regarding the handling of the AC adaptor.
• Do not use a voltage other than the indicated power supply voltage. Use of a
voltage other than that indicated may cause fire or electrical shock.
• If the power cord should become damaged (exposed wires, disconnection,
etc.), purchase a new AC adaptor. Use of a damaged power cord may cause
fire or electrical shock.
• Do not cut or damage the power cord. Also do not place heavy objects on top
of it or subject it to excessive heat. Damage to the power cord may cause fire or
electrical shock.
• Do not attempt to shape the power cord or subject it to excessive bending,
twisting or pulling. This may cause fire or electrical shock.
• Please use the adaptor specified for this instrument. Use of another adaptor
may cause fire, electrical shock, or malfunction.
Do not locate the instrument or its stand on an uneven or unstable surface.
• Locating the instrument or its stand on an uneven or unstable surface can
cause it to fall, creating the danger of personal injury.
478B-E-004A 
						

							E-3
Do not place containers containing water or other liquids on the instrument.
• Do not place the following objects on the instrument. Placing such objects on
the instrument may cause fire or electrical shock if they spill and get inside the
instrument.
• Containers filled with water or other liquids (including vases, potted plants,
cups, cosmetics and medicines)
• Small metal objects (including hairpins, sewing needles and coins)
• Flammable objects
In the event a foreign object should happen to get inside the instrument,
please take the following actions:
1. Turn power off.
2. Unplug the AC adaptor from the wall outlet.
3. If there are any batteries loaded in the keyboard, remove them.
• Do not touch the batteries directly with your hands when removing them.
They may be hot or battery fluid may be leaking from them.
4. Consult with the dealer where you purchased the keyboard or with an
authorized CASIO service provider.
Do not disassemble or modify the instrument.
• Never attempt of take apart or modify the instrument, its accessories, or
separately sold options. Doing so may cause fire, electrical shock or malfunc-
tion. Consult your dealer concerning all inspection, adjustment or repair of
internal components.
Do not use if there is an abnormality or malfunction.
• Do not use the instrument if there appear to be abnormalities such as the
presence of smoke or abnormal odor. Also do not use the instrument if there
appear to be malfunctions such as the power not coming on or sound not
being produced. Use under such conditions may cause fire or electrical shock.
In such cases, take the following actions immediately. Never attempt to repair
the instrument yourself.
1. Turn power off.
2. Unplug the AC adaptor from the wall outlet.
3. If there are any batteries loaded in the keyboard, remove them.
• Do not touch the batteries directly with your hands when removing them.
They may be hot or battery fluid may be leaking from them.
4. Consult with the dealer where you purchased the keyboard or with an
authorized CASIO service provider.
When the instrument has been dropped:
• In the case the instrument has been dropped or damaged, take the following
actions. Continued use may cause fire or electrical shock.
1. Turn power off.
2. Unplug the AC adaptor from the wall outlet.
3. If there are any batteries loaded in the keyboard, remove them.
• Do not touch the batteries directly with your hands when removing them.
They may be hot or battery fluid may be leaking from them.
4. Consult with the dealer where you purchased the keyboard or with an
authorized CASIO service provider.
Be careful of the bags around children.
• Never allow anyone to place the plastic bags of the instrument, its accessories,
and its separately sold options over their heads. Doing so may cause suffoca-
tion. Particular caution is required in homes with small children.
478B-E-005A 
						

							E-4
 CAUTION
AC Adaptor
• Do not locate the power cord in close proximity to heaters or other heating
appliances. This may cause the cord to melt leading to possible fire or electrical
shock.
• When unplugging the AC adaptor from an electrical outlet, always make sure to
pull on the adaptor itself and not the cord. Pulling excessively on the cord may
cause it to be damaged or break leading to possible fire or electrical shock.
• Do not touch the AC adaptor with wet hands when it is plugged in. This may
cause electrical shock.
• When not using the instrument for an extended period such as when traveling,
always make sure to unplug the AC adaptor from the electrical outlet for safety
reasons.
• After use turn off the power switch of the instrument and unplug the AC adaptor
from the electrical outlet.
• At least once a year, unplug the AC adaptor from the power outlet and clean the
area around the prongs of the plug. Dust build up around the prongs can create
the danger of fire.
Batteries
• Improper battery use may cause batteries to rupture and leak. This may cause
injury, malfunction of the instrument or discoloration of furniture and other
articles that come into contact with battery fluid. Take care to observe the follow-
ing.
• Install batteries so their polarity (+/–) matches that indicated on the instru-
ment.
• For safety and to prevent possible leakage of battery fluid, always make sure to
remove batteries from the instrument when you do not plan to use it for a long
time.
• Always make sure that the batteries making up a set are all of the same type.
• Never combine new batteries with old ones.
• Never dispose of batteries by incinerating them. Never short or disassemble
batteries, and do not expose them to excessive heat.
• Replace dead batteries as soon as possible.
• Never attempt to recharge batteries.
Transport
• When transporting the instrument, always make sure to unplug the AC adaptor
from the electrical outlet and confirm that all other external connections have
been disconnected. Only then should the instrument be transported. If the above
is not done, the cord may be damaged leading to possible fire or electrical shock.
Care
• Whenever caring, make sure to first unplug the AC adaptor from the electrical
outlet. Also remove the instrument’s batteries if battery power is being used.
Location
• Never locate the instrument in areas subject to high humidity or heavy accumula-
tion of dust. Doing so may cause fire or electrical shock.
• Never locate the instrument in areas subject to grease splatters or steam, such as
in a kitchen or near a humidifier. Doing so may cause fire or electrical shock.
Do not place keyboard on lacquered furniture.
• The instrument’s silicone rubber feet may eventually blacken or scar lacquered
surfaces. Use felt cloth pads to insulate the feet or preferably use a CASIO musical
instrument stand designed for your keyboard.
478B-E-006A 
						

							E-5 • You may not be able to see the keyboard keys light under direct sunlight or in
other brightly lit areas.
Care of Your Keyboard
Avoid heat, humidity or direct sunlight.
Do not overexpose the instrument to direct sunlight, or place it near an air conditioner,
or in any extremely hot place.
Do not use near a TV or radio.
This instrument can cause video or audio interference with TV and radio reception. If
this happens, move the instrument away from the TV or radio.
Do not use lacquer, thinner or similar chemicals for cleaning.
Clean the keyboard with a soft cloth dampened in a weak solution of water and a
neutral detergent. Soak the cloth in the solution and squeeze until it is almost dry.
Note
• You may notice lines in the finish of the case of this keyboard. These lines are a result
of the molding process used to shape the plastic of the case. They are not cracks or
breaks in the plastic, and are no cause for concern.
478B-E-007A
Do not place heavy objects on the instrument.
• Do not place heavy objects on the instrument. This may cause the instrument to
tip over or break resulting in injury.
Volume
• Very high volume levels can damage hearing. Avoid using the instrument at very
high volume settings for long periods. Consult with a physician immediately if
you experience impaired hearing or ringing in the ears.
Do not get onto the instrument or stand.
• Do not crawl on top of the instrument or its optional stand. Particular caution is
required in homes having small children. This may cause the instrument or stand
to tip over and break resulting in injury.
Optional Stand (sold separately)
• Carefully assemble the stand following the assembly instructions that come with
it. Securely tighten all bolts, nuts, and fasteners, and make sure that you mount
the instrument correctly onto the stand. Incorrectly or insufficiently tightening
screws, or incorrectly mounting the instrument onto the stand can cause the stand
to tip over or the instrument to fall off the stand, possibly leading to injury.
Accessories and options
• Use only accessories that come with the instrument or authorized CASIO options
(sold separately). Use of non-specified accessories or options may cause fire,
electrical shock, or malfunction. 
						

							E-6
Contents
478B-E-008B
Welcome... ........................................................................................ E-1
Main Features ................................................................................... E-1
Safety Precautions ........................................................................... E-2
Care of Your Keyboard ................................................................... E-5
Contents ............................................................................................ E-6
Control Locations ............................................................................. E-8
Quick Reference ............................................................................ E-10
Connections ................................................................................... E-12
Phones/Output Jack .......................................................................................... E-12
Accessories and Options ..................................................................................... E-13
Power Supply .................................................................................. E-14
Using batteries ..................................................................................................... E-14
To load batteries ................................................................................................... E-14
Important Battery Information ............................................................................ E-14
Using the AC Adaptor ........................................................................................ E-15
Auto Power Off .................................................................................................... E-16
Power On Alert .................................................................................................... E-16
To disable Auto Power Off and power on alert .............................................. E-16
Basic Operations ............................................................................ E-17
To switch power on and off ............................................................................... E-17
To change tones ................................................................................................. E-17
Keyboard split tones ............................................................................................. E-18
Digital Sampling .................................................................................................... E-19
Polyphony .............................................................................................................. E-19
Other Useful Functions ........................................................................................ E-19
To change the key of the keyboard .................................................................. E-19
To tune the keyboard .......................................................................................... E-20
Playing the demo tunes ..................................................................................... E-21
To start demo tune play ....................................................................................... E-21
To stop demo tune play ....................................................................................... E-21
Playing rhythms ................................................................................................... E-22
To select and play a rhythm ................................................................................ E-22
E-6 
						

							E-7478B-E-009A
Using auto-accompaniment ............................................................................. E-23
About the accompaniment keyboard ............................................................. E-23
Using the CASIO CHORD system ......................................................................... E-24
To play a CASIO CHORD auto-accompaniment ............................................. E-24
Using standard fingerings .................................................................................... E-25
To play a FINGERED auto-accompaniment ...................................................... E-26
Improvising with the preset patterns ................................................................. E-27
Using fill-in rhythm ................................................................................................ E-27
Using Synchro start .............................................................................................. E-27
Three Step Lesson System .............................................................. E-28
Using Three Step Lesson System ........................................................................ E-28
Three Step Lesson System Tempo Setting .......................................................... E-29
To play a built-in Song Bank tune ....................................................................... E-29
Using the Three Step Lesson System with Song Bank Tunes ............................. E-30
How the Three Step Lesson System operates in Steps 1 through 3 ................. E-31
Turning Off Key Lighting ....................................................................................... E-32
Number of Simultaneously Lit Keys ..................................................................... E-32
To change the tone used for the melody of a Song Bank tune ..................... E-32
Step 1: Easy Play .................................................................................................. E-33
Step 2: Slow Play ................................................................................................. E-33
Step 3: Normal Play ............................................................................................. E-34
To practice the left hand part ........................................................................... E-35
To check if the right hand or left hand part is currently selected
(two-hand tunes only) .......................................................................................... E-35
MIDI ................................................................................................. E-36
What is MIDI? ....................................................................................................... E-36
MIDI Connections ................................................................................................. E-36
MIDI Channels ....................................................................................................... E-37
General MIDI ....................................................................................................... E-37
Messages ............................................................................................................... E-37
Technical Reference ...................................................................... E-41
Troubleshooting ................................................................................................... E-41
Specifications ...................................................................................................... E-43
Appendix ......................................................................................... A-1
GM Tone Map List ................................................................................................ A-1
Rhythm List ............................................................................................................ A-3
Fingered Chord Charts ........................................................................................ A-4
MIDI Implementation Chart
E-7 
						

							E-8
POWER/MODE
VOLUMEFILL-IN SYNCHRO/
STOPFINGERED
CASIO CHORD
NORMAL ON
OFF
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
NUMBER3-STEP LESSONDEMOSTEP 2 STEP 1 STEP 3
RHYTHMTONE
TUNE
0 1 4
7
2 5
8
3 6
9:VALUE UP
:VALUE DOWNTRANSPOSESONG BANKTEMPOTEMPO
POWER/MODE
VOLUMEFILL-IN SYNCHRO/
STOP
FINGERED
CASIO CHORD
NORMAL ON
OFF
START/TEMPOKEY LIGHT
ONE KEY PLAY
PHONES/
OUTPUT DC 9VOUT MIDI IN
SR
TU
1326789BC
DEFG
I H A 50 4
JKM
L
*PNQQO
VW
Control Locations
478B-E-010A
Rear Panel