CTK-230
SEP. 2003
CTK-230
HIGH-GRADE KEYBOARD
INDEX
Ver.1 : Jan. 2004
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SPECIFICATIONS
GENERAL
Keyboard:
Tones:
49 standard-size keys, 4 octaves
100
Polyphony:
Auto Accompaniment
Rhythm Patterns:
Tempo:
12 notes maximum (6 for certain tones)
100
Variable (236 steps, = 20 to 255)
2 fingering methods (CASIO CHORD, FINGERED)
START/STOP, SYNCHRO/FILL-IN
0 to 9 (10 steps)
Chords:
Rhythm Controller:
Accomp Volume:
Song Bank
Tunes:
50
Controllers:
Display
PLAY/PAUSE, STOP, MELODY ON/OFF
Name display:
TONE, RHYTHM, SONG BANK name/number, keyboard setting names/
values
Tempo:
Tempo value, metronome, synchro standby, beat indicator, volume set-
ting
Chord:
Song Bank Status:
Other Functions
Transpose:
Chord name
PLAY, PAUSE, MELODY ON/OFF
12 steps (–6 semitones to +5 semitones)
Variable (A4 = approximately 440Hz ±50 cents)
0 to 9 (10 steps)
Tuning:
Volume:
Terminals
Phones/Output Terminal:
Stereo standard jack (Output is monaural.)
Output Impedance: 78Ω
Output Voltage: 3V (RMS) MAX
Power Supply Terminal:
Power Supply:
Batteries:
9V DC
Dual power supply system
6 AA-size batteries
Battery Life:
Approximately 6 hours continuous operation on alkaline batteries
Approximately 3 hours continuous operation on manganese batteries
AD-5
AC Adaptor:
Auto Power Off:
Turns power off approximately 6 minutes after last operation.
Enabled under battery power only, can be disabled manually.
ø 10cm × 2 (1.6W + 1.6W)
Speaker Output:
Power Consumption:
Dimensions:
9V
6.5W
1
13
15
87.5 × 30.0 × 10.0 cm (34 /2 × 11 /16 × 3 /16 inch)
Weight:
Approximately 3.2 kg (7.1 lbs) (without batteries)
ELECTRICAL
Current drain with 9 V DC:
No sound output
79 mA ±20 %
426 mA ±20 %
Maximum volume
with 12 keys C3 to G4 pressed in Synth-Lead 1
Volume: 9 (Max.)
Phone output level (Vrms with 32 Ω load each channel):
with key C5 pressed in Synth-Lead 1
200 mV ±20 %
640 mV ±20 %
675 mV ±20 %
Speaker output level (Vrms with 4 Ω load each channel):
with key E2 pressed in Synth-Lead 1
Output level (Vrms with 47 KΩ load each channel):
with key C5 pressed in Synth-Lead 1
— 1 —
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BLOCK DIAGRAM
— 2 —
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CIRCUIT DESCRIPTION
KEY MATRIX
KID0
KID1
KID2
KID3
KID4
KID5
KID6
TEMPO
TEMPO
VOLUME
VOLUME
KOD8
KOD9
—
+
0
▼
▼
▼
▼
START/
STOP
SYNCRO/
FILL IN
ACCOMP
VOLUME
3
6
2
5
8
1
4
7
F5
TRANSPOSE/
SONG
BANK
KOD10
KOD11
KOD12
RHYTHM
NORMAL
TONE
OFF
TUNE
CASIO
CHORD
9
FINGERED
STOP
MELODY
ON/OFF
PLAY/
PAUSE
E2
NOMENCLATURE OF KEYS
C#2 D#2
F#2 G#2 A#2
C#3 D#3
F#3 G#3 A#3
C#4 D#4
F#4 G#4 A#4
C#5 D#5
F#5 G#5 A#5
C2 D2 E2
F2
G2 A2 B2
C3 D3 E3 F3
G3
A3 B3 C4
D4 E4 F4 G4
A4
B4 C5 D5
E5 F5 G5 A5
B5
C6
— 3 —
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PRINTED CIRCUIT BOARDS
Main PCB CMW277-MAIN
Top View
Bottom View
JACK PCB CMW277-MA2M
— 4 —
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DISASSEMBLY
1. Remove the battery cover and then take out the battery.
2. Remove 7 screws and then the console panel.
JACK PCB
Speaker
Speaker
Main PCB
3. Remove 12 screws and then the Main PCB.
4. Remove 2 screws and then the JACK PCB.
5. Remove 8 screws and then the Speaker.
— 5 —
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DIAGNOSTIC PROGRAM
Message on LCD
AD-5
■Initial Setting
1. Connect an AC adaptor.
■ How to start diagnostic program
1. Press the “POWER” button while pressing the “0 Up” and “START/STOP” buttons.
SONG BANK
TEST
■ Diagnostic program
1. MODE Swtich check
1 Press “CASIO CHORD” button.
RHYTH
TONE
TEST
TEST
TEST
2 Press “FINGERED” button.
3 Press “NORMAL” button.
SONG BANK
2. SWITCH check
1 Press “0” button.
SWITCH
2 Press the buttons in the following order.
15 18 21 24
16 19 22 25
17 20 23 26
7
8
11
12
14
3
5
4
6
1
2
9
10
13
3 OK sound must be audible with the display as Message on LCD
3. ROM check
SWIT OK
1 Press “2” button.
ROM TEST
↓
ROM 0000
↓
ROM OK
OK sound must ne audible.
4. ROM Ver. check
1 Press “1” button.
277Vr170
Pip sound must be audible.
5. D/A check
1 Press “4” button.
MIN
MID
Minimum sine wave sound must be audible at center position.
2 Press “5” button.
Middle sine wave sound must be audible at center position.
3 Press “6” button.
MAX
Maximum sine wave sound must be audible at center position.
— 6 —
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Message on LCD
6. LCD check
1 Press “TONE” button.
LCD
2 Press “TONE” button.
*Pip sound must be audible.
The display must be changed to turn on all dots.
3 Press “TONE” button.
The display must be changed to no display.
4 Press “TONE” button.
The display must be changed to pattern 1 dot matrix.
5 Press “TONE” button.
The display must be changed to pattern 2 dot matrix.
6 Press “TONE” button.
The display must be changed to pattern 1 characters.
7 Press “TONE” button.
The display must be changed to pattern 2 characters.
8 Press “TONE” button.
TEST
The display must be changed to as remark.
7. AC Adaptor check
1 Press “SONG BANK” button.
OK sound must be audible.
P=AC ADP
8. APO check
1 Press “STOP” button.
* Go out from TEST mode (Power off).
* The LCD turns off.
DIAGNOSTIC PROGRAM IS FINISHED.
— 7 —
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— 8 —
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— 9 —
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EXPLODED VIEW
2
1
11
10
3
7
9
8
6
5
15
16
12
17
13
14
18
— 10 —
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PARTS LIST
CTK-230
Notes: This parts list does not include the cosmetic parts, which
parts are marked with item No. "R-X" in the exploded
view.
Contact our spare parts department if you need these
parts for refurbish.
1. Prices and specifications are subject to change with-
out prior notice.
2. As for spare parts order and supply, refer to the
"GUIDEBOOK for Spare parts Supply", published
seperately.
3. The numbers in item column correspond to the same
numbers in drawing.
— 11 —
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Price
Code
N
Item
Parts code
Parts name
Specification
CTK-230-1
Q
R
Remarks
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
3
2
1
BG
AA
AD
BE
AA
AB
AB
AA
AA
AC
AD
BG
CF
C
C
C
B
C
C
C
C
C
C
C
C
A
C
C
C
C
C
N
N
N
-
1
2
9481 2403
1014 9232
ASSY/PANEL/SPEAKER
KNOB
##073-49104000
SWITCH/SLIDE KNOB
SPEAKER
##051-40000080
3
1014 9231
3831 1043
4
S10JA13B
##072-49105000
RUBBER/BUTTON
RUBBER/BUTTON
RUBBER/BUTTON
RUBBER/BUTTON
RUBBER/BUTTON
RUBBER/BUTTON
RUBBER/BUTTON
LCD ASSY
N
N
N
N
N
N
N
N
N
N
N
N
N
N
5
1014 9219
1014 9229
1014 9226
1014 9224
1014 9218
1014 9222
1014 9216
1014 9178
1014 9174
1014 9188
1014 9258
1014 9234
1014 9259
9481 2404
##072-49109000
##072-49108000
##072-49107000
##072-49104000
##072-49106000
##072-49103000
8CA-120-49102000
8CA-120-49101000
8CA-120-49103000
##150-49102000
##150-49101000
##150-49103000
6
7
8
9
10
11
12
13
14
15
16
17
18
PCB ASSY/MAIN
PCB ASSY/JACK
SET KEY/WHITE
SET KEY/WHITE
SET KEY/BLACK
AO
AO
AN
AK
BR
ASSY/CASE/PCB
CTK-230-2
ACCESSORY
STAND/NOTE
##040-49104000
1
AI
C
N
-
1014 9205
Notes : Q- Quantity per unit
R- Rank
— 12 —
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Ver.1 : Jan. 2004
Replacement of the EXPLODED VIEW and PARTS LIST
CASIO TECHNO CO.,LTD.
Overseas Service Division
6-2, Hon-machi 1-Chome
Shibuya-ku, Tokyo 151-8543, Japan
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