Casio K43 Instruction Manual

							E-29
MIDI
What is MIDI?
The letters MIDI stand for Musical Instrument Digital 
Interface, which is the name of a worldwide standard for 
digital signals and connectors that makes it possible to
exchange musical data between musical instruments and 
computers (machines) produced by different manufacturers. 
MIDI compatible equipment can exchange keyboard key
press, key release, tone change, and other data as messages. 
Though you do not need any special knowledge about MIDI 
to use this keyboard as a stand-alone unit, MIDI operations
require a bit of specialized knowledge. This section provides 
you with an overview of MIDI that will help to get you going.
MIDI Connections
MIDI messages are send out through the MIDI OUT terminal 
of one machine to the MIDI IN terminal of another machine 
over a MIDI cable. To send a message from this keyboard to 
another machine, for example, you must use a MIDI cable to
connect the MIDI OUT terminal of this keyboard to the MIDI 
IN terminal of the other machine. To send MIDI messages 
back to this keyboard, you need to use a MIDI cable to connect
the other machine’s MIDI OUT terminal to the MIDI IN
terminal of this keyboard.
To use a computer or other MIDI device to record and
playback the MIDI data produced by this keyboard, you must 
connect the MIDI IN and MIDI OUT terminals of both 
machines in order to send and receive data.
MIDI Channels
MIDI allows you to send the data for multiple parts at the 
same time, with each part being sent over a separate MIDI 
channel. There are 16 MIDI channels, numbered 1 through
16, and MIDI channel data is always included whenever you 
exchange data (key press etc.). 
Both the sending machine and the receiving machine must
be set to the same channel for the receiving unit to correctly 
receive and play data. If the receiving machine is set to 
Channel 2, for example, it receives only MIDI Channel 2 data,
and all other channels are ignored. 
With this keyboard, messages received over MIDI Channels 
1, 2, 3, 4, and 10 can be used for multi-timbre play of up to
five different instrument parts. The tone and volume settings 
for these five channels must be controlled by messages sent 
from an external device.
Conversely, keyboard operations are sent to external devices 
over MIDI Channel 1.
General MIDI
General MIDI standardizes MIDI data for all sound source
types, regardless of manufacturer. General MIDI specifies 
such factors as tone numbering, drum sounds, and available
MIDI channels for all sound sources. This standard makes it 
possible for all MIDI equipment to reproduce the same 
nuances when playing General MIDI data, regardless of the
manufacturer of the sound source. 
Though the sound source of this keyboard is not General 
MIDI compatible, you can still connect the keyboard to a
computer or other MIDI equipment to playback General MIDI 
data that is widely available in stores, over computer 
networks, and from other sources.
❚ NOTE
• General MIDI data made up of a large number of parts may not 
play correctly on this keyboard.
• You will have most success playing back General MIDI data
that has few parts and is made up of parts on channels 1, 2, 3,
4, and 10.
Messages
There is a wide variety of messages defined under the MIDI 
standard, and this section details the particular messages that 
can be sent and received by this keyboard.
MIDI IN MIDI OUTMIDI IN MIDI OUT
640A-E-031A
Computer etc. 
						

							E-30
NOTE ON/OFF
This message sends data when a key is pressed (NOTE ON) 
or released (NOTE OFF).
A NOTE ON/OFF message includes a note number (to 
indicate note whose key is being pressed or released) and 
velocity (velocity=100 when the volume value of this unit is
9 to 2, and velocity=75 when the volume value is 1 or 0). 
NOTE ON velocity is always used to determine the relative 
volume of the note. This keyboard does not receive NOTE
OFF velocity data. 
Whenever you press or release a key on this keyboard, the 
corresponding NOTE ON or NOTE OFF message is sent by
constant velocity from the MIDI OUT terminal.
PROGRAM CHANGE
This is the tone selection message. PROGRAM CHANGE can
contain tone data within the range of 0 to 127.
A PROGRAM CHANGE message (0 to 99) is sent out through 
this keyboard’s MIDI OUT terminal whenever you manually
change its tone number. Receipt of a PROGRAM CHANGE 
message from an external machine changes the tone setting 
of this keyboard. 
This keyboard can send tone data within the range of 00 to
99 and receive tone data within the range of 0 to 127 *. Each
of the 128 General MIDI tones is automatically assigned to
one of the keyboard ’s 100 built-in tones as shown on page A-
1. Select this setting when you want to listen to General MIDI 
data from a computer or other external equipment. 
* When GM mapping is turned on (page E-31). When turned 
off, tone data is received in the range of 0 to 99.
❚ NOTE
• Channel 10 is for the drum part only, and it does not receive 
Program Change messages.  When receiving MIDI data, it
sounds percussion sounds produced by this keyboard.
PITCH BEND
This message carries pitch bend information for smoothly 
sliding the pitch upwards or downwards during keyboard 
play. This keyboard does not send pitch bend data, but it can
receive such data.
Effect Control Number
VOLUME 7
HOLD1 64
MODULATION 1
LOCAL CONTROL (Default: on) /GM mapping
(Default: of f)
This setting determines whether or not the keyboard and 
sound source of this keyboard are connected internally. When 
recording to a computer or other external device connected 
to this keyboard ’s MIDI IN/OUT terminal, it helps if you
turn LOCAL CONTROL off. 
on: Anything played on the keyboard is sounded by the 
internal sound source and simultaneously output as a 
MIDI message from the MIDI OUT terminal.
oFF: Anything played on the keyboard is output as a MIDI
message from the MIDI OUT terminal, without being 
sounded by the internal sound source. Turn LOCAL
CONTROL off whenever you are using the MIDI THRU 
function of a computer or other external device. Also 
note that no sound is produced by the keyboard if
LOCAL CONTROL is turned off and no external device 
is connected.
❚ NOTE
•When you are using this keyboard in a stand-alone 
configuration, keyboard keys do not light while local control is
turned off.
CONTROL CHANGE
This message adds effects such as vibrato and volume changes 
applied during keyboard play. CONTROL CHANGE data
includes a control number (to identify the effect type) and a 
control value (to specify the on/off status and depth of the 
effect).
The following is a list of data that can be received using 
CONTROL CHANGE.
640A-E-032A
RHYTHM
TEMPOSONG BANK 
						

							E-31
Sound SourceMIDI OUT
Sound Source
MIDI THRU
MIDI OUTMIDI IN
MIDI IN
MIDI OUT
LOCAL CONTROL Off
Notes played on the keyboard are output as MIDI messages 
from the MIDI OUT terminal, but not sounded directly by 
the internal sound source. The MIDI THRU terminal of the 
connected device can be used to return the MIDI message
and sound it on this keyboard ’s sound source.
T o  turn of f LOCAL  CONTROL/T o turn on GM
mapping
1.While in any mode besides the Song Bank Mode 
(indicated when the SONG BANK indicator is
lit), hold down the RHYTHM button and press
the SONG BANK button.
• Perform step 2 within five seconds after performing
step 1.
2.Use the TEMPO button () to turn off local
control.
• This also turns on GM mapping.
Local   
To  turn on LOCAL  CONTROL/To turn off GM
mapping
1.While in any mode besides the Song Bank Mode 
(indicated when the SONG BANK indicator is 
lit), hold down the RHYTHM button and press
the SONG BANK button.
• Perform step 2 within five seconds after performing
step 1.
2.Use the TEMPO button () to turn on local
control.
• This also turns off GM mapping.
Local   
❚ NOTE
• Note that LOCAL CONTROL is also turned on automatically 
whenever you turn on power, or when you press any of the
following buttons.
•START/STOP (to start rhythm or Song Bank tune play)
• ONE-KEY PLAY
• STEP 1
• STEP 2
• STEP 3
• DEMO (to start demo tune play)
• See the GM Tone Map List at the back of this manual for
information about tone assignments while GM mapping is turned
on.
LOCAL CONTROL On
Notes played on the keyboard are sounded by the internal 
sound source and output as MIDI messages from the MIDI 
OUT terminal.
640A-E-033A 
						

							E-32
Technical Reference
Troubleshooting
Be sure to check the following table whenever you experience problems with keyboard operation.
CauseSymptom Action
• No sound when keyboard keys 
are pressed.
•Any of the following symptoms 
while using battery power.
•Key light stays on. 1. Power supply problem. 
2. Volume setting is too low. 
3. Headphones are plugged into
the keyboard.
4. The POWER/MODE selector is
in the CASIO CHORD or 
FINGERED position.
5. Tone  “99 PERCUSSION ” is
selected and you are pressing
keys that are not assigned tones.
6. LOCAL CONTROL is off.
• Low battery power
•Keyboard is waiting for play of 
the correct note during Step 1
or Step 2 play. 1. Correctly attach the AC
adaptor, make sure that 
batteries (+/ –) are facing
correctly, and check to make 
sure that batteries are not dead.
2. Use the VOLUME buttons (VOLUME slider on the LK-45/
46) to increase volume.
3. Unplug the headphones from the PHONES/OUTPUT jack.
4. Normal play is not possible on
the accompaniment keyboard
while the POWER/MODE
selector is set to CASIO 
CHORD or FINGERED. 
Change the POWER/MODE
selector setting to NORMAL.
5. While  “99 PERCUSSION ” is
selected, you can use only keys
that are marked on the console 
with illustrations of percussion 
instruments.
6. Turn on LOCAL CONTROL.
• Replace the batteries with a set 
of new ones or use the AC
adaptor.
1. Press the lit key to continue with
Step 1 or Step 2 play.
2. Press the START/STOP button
to quit Step 1 or Step 2 play.
640A-E-034C
See Page
Page E-12 
Page E-15 
Page E-14 
Page E-18 
Page E-16 
Page E-31
Page E-12
Pages 
E-26, 27
Pages 
E-26, 27
•Dim power indicator
• Instrument does not turn on
• Display that is flickering, dim, or difficult to read
• Abnormally low speaker/headphone volume
• Distortion of sound output
• Occasional interruption of sound when playing at high volume
• Sudden power failure when playing at high volume
• Flickering or dimming of the display when playing at high volume
• Continued sound output even after you release a key
• A tone that is totally different from the one that is selected
• Abnormal rhythm pattern and Song Bank play
• Loss of power, sound distortion, or low volume when playing from a conne\
cted computer or MIDI 
device

• Abnormally low microphone volume
• Distortion of microphone input
• Dim power supply indicator when a microphone is used 
						

							E-33
CauseSymptom Action
•Power on alert is telling you that 
power is left on.
•Keyboard is in the Song Bank 
Mode.
•Keyboard is in the Song Bank 
Mode.
• Demo tune play is in progress.
•MIDI cables are not connected 
properly.
•The computer ’s MIDI THRU
function is turned on.
1. Use of a microphone that is a
different from the type that is 
recommended.
2. Use of the microphone in the
vicinity of fluorescent lighting.
1. Microphone volume setting istoo low.
2. Microphone on/off switch is set to OFF. •
Press any button or keyboard 
key to resume normal 
operation with the keyboard in 
its initial power on setting.
•Press the SONG BANK button 
to return to the normal mode.
•Press the SONG BANK button 
to return to the normal mode.
• Stop demo tune play.
•Connect MIDI cables properly.
•Turn off the MIDI THRU 
function on the computer or 
turn off LOCAL CONTROL on 
the keyboard.
1. Use a full metal shielded
Cannon type microphone.
2. Move the microphone away from source of the static.
1. Increase the microphonevolume setting.
2. Change the microphone on/off switch setting to ON.
640A-E-035C
Page E-13
Page E-23
Page E-23 
Page E-18
Page E-29
Page E-31
Page E-14 
Page E-14
Page E-14 
Page E-14See Page
•
Keyboard keys light but no 
sound is produced.
•RHYTHM button does not 
work.
•Cannot change TRANSPOSE/ 
TUNE/LOCAL CONTROL 
settings.
•No sound is produced when 
playing MIDI data from a 
computer.
•Playing on the keyboard 
produces an unnatural sound 
when connected to a computer.
•Static noise when a microphone 
is connected (LK-45/46 only).
•No microphone sound (LK-45/ 
46 only) 
						

							E-34
Model:LK-43/LK-44/LK-45/LK-46
Keyboard:61 standard-size keys; 5 octaves
Key Light System:Can be turned on and off (up to 4 keys can be lit at the same time)
Tones:100 presets
Polyphony:12 notes maximum
3-Step Lesson System:Number of simultaneosly lit keys; 4 
3-Steps
Playback: 1 tune repeat playback 
Voice Fingering Guide: On/Off
Auto-accompaniment Rhythm patterns: 50 presets 
Tempo: Adjustable, (216 steps, 
 = 40 to 255), initial value; 120
Chords: Two systems; CASIO CHORD, FINGERED 
Other: Fill-in pattern, Synchro start
Song Bank tunes: 100 tunes
Musical Information Function:Tone, Auto Accompaniment, Song Bank numbers and names; tempo, 3 step lesson 
display, chord name, fingering, timing indicator, key lighting, voice fingering
Other Functions:
Transpose: F# to C to F: half-note
Tuning: Adjustable A4 = Approx. 440 Hz ±50 cents, Initial value: A4 = Approx. 440 Hz
MIDI: 5 multi-timbre receive
Speakers:10 cm diameter x 2   (Output: 2W+2W)
Digital Volume Control 
(LK-43/44 only):Main volume; 10 steps (0 to 9), initial value: 7
I/O Terminals
MIDI Terminals: IN, OUT 
Sustain: Standard jack 
Power Supply: DC 9V jack 
Headphones/Output: Stereo standard jack (Output is monaural.) LK-43/44: [output impedance: 78
, output voltage: 4V (RMS) MAX]
LK-45/46: [output impedance: 94 
, output voltage: 3V (RMS) MAX]
Microphone In (LK-45/46 only):Standard jack (with microphone volume knob)
Input impedance: 3K 

Input sensitivity: 10mV
Power Supply: 2-way
Batteries: 6 AA-size 
Battery life: Approximately 1 hour on R6P (SUM3) manganese batteries/ 4 hours on LR6 (AM3) alkaline batteries
AC adaptor : AD-5
Auto Power Off: Approximately 6 minutes after the last operation (Operates during battery use only)
Power Consumption: 9 V  7.7 W
Dimensions:LK-43/44: 94.4 x 36.3 x 11.8 cm (37 3/16 x 14 5/16 x 4 5/8)
LK-45/46: 94.4 x 37.3 x 13.0 cm (37 3/16 x 14 11/16 x 5 1/8)
Weight: LK-43/44: Approximately 4.5 kg (9.9 lbs) (without batteries) 
LK-45/46: Approximately 4.6 kg (10.1 lbs) (without batteries)
* Designs and specifications are subject to change without notice.
Specifications
640A-E-036C 
						

							E-35640A-E-037A
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.
Care of Your Keyboard 
						

							Appendix/Apéndice
GM T one Map List
Lista de asignaciones de sonido GM
00 GRAND PIANO01 BRIGHT PIANO02 HONKY-TONK
03 E GRAND PIANO04 ELEC PIANO 105 ELEC PIANO 2
06 ELEC PIANO 307 ELEC PIANO 408 HARPSICHORD
09 CLAVI10 ELEC ORGAN 111 ELEC ORGAN 2
12 ELEC ORGAN 313 ELEC ORGAN 414 CHURCH ORGAN
15 PIPE ORGAN16 REED ORGAN17 ACCORDION
18 BANDONEON19 HARMONICA20 NYLON STR GT
21 STEEL STR GT22 JAZZ GUITAR23 CLEAN GUITAR
24 MUTE GUITAR25 DIST GUITAR26 ACOUSTIC BASS
27 ELEC BASS28 SLAP BASS29 BANJO
30 VIOLIN31 CELLO32 HARP
33 STRINGS 134 STRINGS 235 STRINGS 3
36 SYNTH-STR 137 SYNTH-STR 238 CHOIR AAHS
39 SYNTH-VOICE40 TRUMPET41 TUBA
42 BRASS SECTION43 FRENCH HORN 144 FRENCH HORN 2
45 BRASS 146 BRASS 247 SYNTH-BRASS 1
48 SYNTH-BRASS 249 SYNTH-BRASS 3 Tone No./Tone Name
Nº de sonido/Nombre de sonidoGM No.
N º GM
013
245
896
71617
181519
1042021
232224
252627
2829 30 31 8432
33 34 3536 37105
40 4142 4345 46 47
48 554944
505152 91
53 855658
576059
616962
63 8370
Tone No./Tone NameNº de sonido/Nombre de sonidoGM No.
N º GM
50 SOPRANO SAX51 ALTO SAX52 TENOR SAX
53 OBOE54 CLARINET55 PICCOLO
56 FLUTE57 RECORDER58 FLUTE ENSEMBLE
59 WHISTLE60 SYNTH-LEAD 161 SYNTH-LEAD 2
62 SYNTH-LEAD 363 CALLIOPE64 SYNTH-PAD 1
65 SYNTH-PAD 266 SYNTH-PAD 367 BOWED GLASS
68 HALO PAD69 SYNTH-BASS70 RAIN DROP
71 SF72 SOUNDTRACK73 SPACE PAD
74 SYNTH-SFX75 VEHICLE76 TELEPHONE
77 SPACE78 INVADER79 FUNNY
80 STRINGS PIANO81 STRINGS EP82 CHOIR EP
83 CHOIR ORGAN84 STRINGS GUITAR85 STRINGS HARP
86 BRASS STRINGS87 VIB PAD88 12STR GUITAR
89 CHOIR STRINGS90 BASS/PIANO91 BASS/E PIANO
92 BASS/VIB93 BASS/NYLON STR GT94 BASS/DIST GUITAR
95 STRINGS/PIANO96 STRINGS/TRUMPET97 VIBRAPHONE
98 MARIMBA99 PERCUSSION
646566 67
687172
7374 7975 76 77
788781 86
808289
909592 93 98
54 9438 3996
10397101
102125124
126127123
10688 107108
10999 110111
112113114
115100 116117
118119120
12112210 11 14
12 13
640A-E-074AA-1 
						

							Rhythm ListLista de ritmos
POPS
00 CLUB POP 
01 FUNKY POP
02 SOUL BALLAD
03 POP BALLAD
04 LITE POP
05 16 BEAT FUNK
06 8 BEAT POP
07 POP ROCK
08 DANCE POP
09 POP FUSION
10 FOLKIE POP
ROCK
11 ROCK WALTZ 
12 SLOW ROCK
13 SOFT ROCK
14 50 ’S ROCK
15 60 ’S SOUL
16 4 BEAT ROCK
17 ROCK
18 TWIST
19 NEW ORLNS R&R
20 R&B
JAZZ/FUSION
21 BIG BAND 
22 SWING
23 FOX TROT
24 JAZZ WALTZ
25 LATIN FUSION
DANCE/FUNK
26 TECHNO 
27 TRANCE
28 DISCO
29 FUNK
30 RAP
EUROPEAN
31 POLKA 
32 MARCH
33 WALTZ
34 SLOW WALTZ
35 TANGO
LATIN/VARIOUS I
36 BOSSA NOVA 
37 SAMBA
38 MAMBO
39 REGGAE
40 SKA
41 SALSA
42 FOLKLORE
43
RUMBA CATALANA
VARIOUS II
44 COUNTRY 
45 TOWNSHIP
46 SLOW GOSPEL
47 BALADI
48 BAROQUE
49 NEW AGE
640A-E-075AA-2 
						

							Fingered Chord ChartsCuadros de acordes digitados
This table shows the left-hand fingerings (including inverted forms) f\
or a number of 
often-used chords. 
Esta tabla muestra las digitaciones (incluyendo las formas invertidas)\
 para varios de 
los acordes m ás a menudo usados.
640A-E-076AA-3
1
2
3
4
5
: Left hand finger
numbers
:N úmeros de los
dedos de la mano 
izquierda