R
(with price)
CTK-100
CTK-100
ELECTRONIC KEYBOARD
INDEX
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SPECIFICATIONS
General
Number of Keys:
Polyphonic:
Preset Tones:
Auto-Rhythms:
Auto-Accompaniment:
Demonstration Tune:
Built-In Speakers:
Terminals:
49
8-note
100
100
CASIO Chord/Fingered
Classical Medley
10 cm dia. 1.0W Input Rating: 2 pcs.
Output Jack [Output Impedance: 120 Ω, Output Voltage: 3 V (rms)MAX],
AC Adapter Jack (DC 9 V)
Power Source:
3-way AC or DC source
AC: AC adapter AD-5
DC: 6 AA size dry batteries
Battery life: Approx. 3 hours (SUM-3/R6P)
Approx. 6 hours (AM-3/LR6)
5.0 W
86 x 857 x 285 mm (HWD)
(3-3/8 x 33-3/4 x 11-1/4 inches) (HWD)
3.2 kg (7.0 lbs) excluding batteries
Music stand
Power Consumption:
Dimentions:
Weight:
Standard Accessory:
Electrical
Current Drain with 9V DC:
No Sound Output
47 mA ± 20%
413 mA ± 20%
Maximum Volume
with keys C2, D2, E2 and F2 pressed in
Car-Horn tone, Volume; Maximum
Output Level (Vrms with 8 Ω load each channel):
with key G2 pressed in Street Organ tone
Speaker Input Level:
76 mV ± 20%
935 mV ± 20%
6.0 V
with key G2 pressed in Street Organ tone
Minimum Operating Voltage:
— 1 —
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BLOCK DIAGRAM
KO0~KO9
Output Jack
CPU
MSM6387-13
Amplifier
LA4598
Filter
KI0~KI7
T3/T4
Main Volume
Speakers
Keyboard
Switches
VDD +5V
VC +9V
Power supply circuit
T2
Oscillator
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CIRCUIT DESCRIPTION
Key and Switch Matrix
KI0
KI1
KI2
C2
KI3
C#2
G2
KI4
D2
KI5
D#2
A2
KI6
E2
KI7
F2
B2
F3
B3
F4
B4
F5
B5
KO0
0
1
(KC1)
KO1
2
3
F#2
C3
G#2
D3
A#2
E3
(KC2)
KO2
4
5
C#3
G3
D#3
A3
(KC3)
KO3
6
7
9
F#3
C4
G#3
D4
A#3
E4
(KC4)
KO4
8
C#4
G4
D#4
A4
(KC5)
KO5
Tone
(KC6)
Rhythm
F#4
C5
G#4
D5
A#4
E5
KO6
(KC7)
Tempo
Up
Tempo
Down
C#5
G5
D#5
A5
KO7
(KC8)
Start/
Stop
Fill-In
F#5
G#5
A#5
Accomp.
Volume 1
(Min)
Accomp.
Volume 4
(Max)
KO8
(KC9)
Accomp. Accomp.
Volume 2 Volume 3
Demo
C6
Power
OFF
CASIO
Chord
KO9
Normal
Fingered
Nomenclature of Keys
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
C#2
F#2 G#2 A#2
C#3
D#3
D#2
D2
F2
B2 C3 D3 E3 F3 G3 A3 B3 C4 D4 E4 F4 G4 A4 B4
C5 D5 E5 F5 G5 A5 B5
C6
E2
G2
C2
A2
— 3 —
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CPU (MSM6387-13)
The CPU contains a sound data ROM and a DAC (Digital to Analog Convertor), and it provides a sound
waveform in accordance with the pressed key and the selected tone.
The following table shows the pin functions of the CPU.
Pin No.
Terminal
In/ Out
Function
1, 2
TEST1, TEST2
Not used. Connected to ground.
Power ON reset terminal. When the power switch is
turned on, the terminal receives a low level signal and
the internal circuits of the LSI are initialized.
3
RESET
In
4
5
AVDD
OUT
In
Out
In
+5 V sorce for the built-in DAC
Sound waveform output
6
AGND
Ground (0 V) source for the built-in DAC
Ground (0 V) source
7
GND
In
8, 9
10
COSI, COSO
VDD
In/Out
In
21.725 MHz clock pulse input/output
+5 V source
11 ~ 18
19, 20
21 ~ 30
KI0 ~ KI7
KO11, KO10
KO9 ~ KO0
In
Input terminal from keys and switches
Not used.
Out
Key and switch scan signal output
Filter Block
Since the sound signal from the CPU is a stepped waveform, the filter block is added to smooth the
waveform.
VDD
T3
C273(H) C473(H)
T4
2.2K
1K
3.3K
From CPU
AG
AG
C333(H)
To main volume
AG
AG
AG
— 4 —
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Power Amplifier (LA4598)
The power amplifier is a 2-channel power amplifier with a standby switch.
The following table shows the pin functions of the power amplifier.
Pin No.
Terminal
Power GND
Ch1 B.S.
Ch1 OUT
VCC
In/Out
Functiion
1
2
Ground (0 V) source
Out
In
Terminal for a bootstrap capacitor
Channel1 output
3
4
In
+9 V source. Connected to the power source directly.
Negative feedback input
Channel1 input
5
Ch1 N.F.
Ch1 IN
In
6
In
7
D.C.
Terminal for a decoupling capacitor
Ground (0 V) source
8
Pre GND
Standby
Ch2 IN
In
In
9
Power control signal input. 0 V: OFF, +9 V: ON
Channel2 input
10
11
12
13
14
In
Ch2 N.F.
Ch2 OUT
Ch2 B.S.
NC
In
Negative feedback input
Channel2 output
Out
Terminal for a bootstrap capacitor
Not used.
TROUBLESHOOTING
Nature of Trouble
No power
Faulty Block
Checkpoint
Power Supply Circuit
Emitter of T2 should provide +5.5 V.
Base of T2 should receive +6 V.
Jack contact.
Power Jack
No sound at all
Power Amp. (LA4598)
Pin 9 should receive +9 V when the
power switch is turned on.
Check output signals of pins 3 and 12.
Pins 21 ~ 30 should provide pulses.
CPU (MSM6387-13)
Pin 5 should have a sound signal when
keys are pressed.
Oscillator
Pins 8 and 9 of the CPU should receive
an ocsillation signal.
A certain key or switch
does not function
Key and Switch Matrix
Key and Switch Matrix
Dust on the contact.
Certain keys or switches
do not function
Open circuit on KC or KI line.
— 5 —
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IC AND TRANSISTOR LEAD IDENTIFICATION
MSM6387-13
LA4598
T3, T4: 2SC1740SQ
T2: 2SD2008Q,R
E
C
B
C
E
B
— 6 —
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SCHEMATIC DIAGRAMS
Keyboard PCBs M496K-KY1M, KY2M
— 7 —
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PCB VIEW and MAJOR WAVEFORMS
1
4
3
2
5
6
7
— 8 —
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Main PCB M4502-MA1M
4.6
4
2.0
1.4
4.6
7
2.4
0.0
7.5
1.7
1
1
4.3
8.7
1.2
0.0
8.4
0.0
8.4
0.0
1.2
4.3
7.5
5.5
8.7 6.1
6
2
5
3
— 9 —
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EXPLODED VIEW
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PARTS LIST
CTK-100
Notes: 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
separately.
3. The numbers in item column correspond to the same
numbers in drawing.
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FOB Japan
N.R.Yen
N
Item Code No.
Parts Name
Specification
Q
M
R
*
Unit Price
PCB Ass'y M5505-MA1M
2011 2961 LSI
2114 2891 IC
2220 1387 Transistor
2253 0357 Transistor
2310 7848 Zener diode
2360 0035 Zener diode
2370 0343 LED
2390 1323 Diode
MSM6387-13
LA4598
1
1
1
1
580
140
13
30
12
10
16
29
3
64
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
27
26
14
36
15
18
12
12
6
A
A
A
A
A
B
C
B
C
B
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
A
B
C
C
C
C
C
B
B
C
B
F
B
A
A
A
A
A
A
A
B
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
B
A
A
A
B
A
A
A
A
C
A
A
A
P
2SC1740SQ-TP-T
2SD2008Q,R-T105-T
RD4.3ESB2-T1-T
RD6.2ESB2-T1-T
LN28RPX-(TT)
2 10
1 10
1 20
1 10
1 20
1 20
15 20
RB100A-T32-T
1SS133T-77-T
2390 1344 Diode
2590 0742 Ceramic oscillator
2606 1141 Carbon film resistor
2606 1155 Carbon film resistor
2606 1169 Carbon film resistor
2606 1183 Carbon film resistor
2606 1204 Carbon film resistor
2606 1274 Carbon film resistor
2606 1288 Carbon film resistor
2606 1295 Carbon film resistor
2606 1309 Carbon film resistor
2606 1358 Carbon film resistor
2606 1449 Carbon film resistor
2606 1484 Carbon film resistor
2606 1498 Carbon film resistor
2606 1554 Carbon film resistor
2606 1617 Carbon film resistor
2606 1708 Carbon film resistor
2801 7910 Electrolytic capacitor
2805 3061 Electrolytic capacitor
2805 3142 Electrolytic capacitor
2807 0926 Electrolytic capacitor
2807 1023 Electrolytic capacitor
2807 1091 Electrolytic capacitor
2807 1112 Electrolytic capacitor
2807 1139 Electrolytic capacitor
2813 0658 Semiconductive capacitor
2813 1925 Semiconductive capacitor
2813 1939 Semiconductive capacitor
2813 1953 Semiconductive capacitor
2813 3101 Semiconductive capacitor
2813 3283 Ceramic capacitor
2819 5443 Module capacitor
2830 6229 Mylar capacitor
2845 3220 Ferrite beads
EFO-GC2175C3
R-20-1K-J-T23-T
R-20-330-J-T23-T
R-20-100-J-T23-T
R-20-10K-J-T23-T
R-20-3.3-J-T23-T
R-20-1.5K-J-T23-T
R-20-2.2K-J-T23-T
R-20-2.7K-J-T23-T
R-20-470-J-T23-T
R-20-3.3K-J-T23-T
R-20-150K-J-T23-T
R-20-820-J-T23-T
R-20-1.8K-J-T23-T
R-20-120K-J-T23-T
R-20-120-J-T23-T
R-20-47-J-T23-T
16RE3-470-T2-T
6.3RE2-220-T2-T
16RE2-10-T2-T
10RE2-470-T2-T
50RE2-1-T2-T
6.3RE2-100-T2-T
10RE2-100-T2-T
50RE2-R47-T2-T
RT-C50TKYR822K-T
RT-B70TKYR333K-T
RT-B70TKYR473K-T
RT-B90TKYR823K-T
RT-B70TKYR273K-T
UP050F104Z-A-B
CNB8X471M
1
5
25 20
2 20
3 20
1 20
2 20
2 20
1 20
1 20
1 20
1 20
1 20
1 20
1 20
1 20
2 20
1 20
2 10
1 10
1 20
3 10
1 20
3 20
3 20
1 20
1 20
1 20
1 20
2 20
1 20
2 20
N
8
9
8
6
8
1
5
51
13
12
29
90
26
26
39
25
230
17
12
26
1700
AMZV-104K50-T
EXC-ELDR35V-T
HEC2305-01-330
YKB21-5101
CT-00160D
ELE-V100KR-T
FL5R1R0PNA
ELE-R100KR-T
M111795A-1
M412124-1
M412171A-1
M412199-1
2 10
5 20
1 10
3501 7049 DC jack
3612 0711 Miniature jack
3665 0217 Terminal B
3841 0539 Inductor
3841 0910 Coil
3841 0959 Inductor
4317 4271 Blank PCB M4502-MA1M
6921 6200 Battery spring 700 (+)
6921 6211 Battery spring 700B (-)
6921 8570 Felt 280X18
6922 4700 PCB ass'y M4502-MA1M
Notes: N – New parts
1
5
1 10
4 20
2 10
4 10
N
N
1
1
1 20
1 20
1 10
N
M111796*1
1
1
M – Minimum order/supply quantity
R – Rank
— 11 —
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FOB Japan
N.R.Yen
N
Item Code No.
Parts Name
Specification
Q
M
R
*
Unit Price
PCB Ass'y Keyboard
2301 0101 Diode
1S2473-T-77-T
49 20
1 10
8
34
91
120
53
950
C
C
C
C
C
C
A
A
B
B
B
J
JX
JA
3725 2030 PC joiner MASKX
3725 2401 PC joiner M283A
4317 1610 Blank PCB M496K-KY1M
4317 1621 Blank PCB M496K-KY2M
6918 5500 Keyboard PCB ass'y
Mechanical Parts
JSF50-9-140
JSF50-15-240M
M110799-1
M210939A-1
M110798*2
1
1
1
1
5
1
5
1
N
N
1
2
3
4
5
6920 5572 SL knob 238
6922 4780 Panel 502
6909 5890 SL contact 12D
6922 3980 Rubber button 700
6922 5750 Felt 502A
M311360B-1
M111763-1
CSB-12D
M211536-2
M412333-1
M43073-1
10G42AFA
M110589D-1
M110590D-1
M110591D-1
M110594F-1
M211760*1
M411202B-1
M411303-1
M412235-1
M411280-2
M110603C-1
M110605C-1
M4630-1
3 10
14
810
35
140
10
B
C
B
B
C
C
B
A
A
A
A
C
C
C
C
C
B
B
C
C
C
B
A
I
1
1
3 10
A
B
A
A
C
B
B
B
B
O
A
B
B
A
C
B
A
A
C
A
N
N
N
N
1
1
1 20
1 20
6908 6160 Felt 156G
3831 0665 Speaker
7
6
7
8
9
10
11
2
4
1
3
2
1
1
1
1
1
1
1
1
1
1
5
5
5
200
120
110
170
130
1500
33
58
56
13
190
110
14
24
200
37
6917 4474 White key set CEGB
6917 4484 White key set DFAS
6917 4494 White key set DFA
6917 4506 Black key set 10P
6922 4790 Case sub ass'y
N
11-1 6917 8462 Key damper 49
11-2 6918 2020 key stopper 4500
11-3 6921 9990 Key stopper M700
6921 9470 Felt 10X225
12
13
14
15
16
17
N
N
3 20
6917 4453 TAC31
6917 4463 TAC18
6910 1130 Sponge A
6921 6231 Joiner cover
6921 6220 Bottom plate
6906 7092 Battery cover sub ass'y
Screws
1
1
1
1
1 20
1 10
N
N
M412126A-1
M311898-1
M311200B*12
1
1
1
5
18
19
20
21
22
23
0009 2682 Screw
0009 4589 Screw
0009 4588 Screw
0008 6417 Screw
6918 1992 Screw
0009 2680 Screw
Accessory
2.6 x 8
2.6 x 8
2.6 x 18
4 x 10
M411279B-1
4 x 8
10 50
8 50
14 50
14 50
18 50
12 50
2
2
2
2
2
2
C
C
C
C
C
C
A
A
A
A
A
A
6916 7880 Music stand
M310827-1
1
1
120
C
B
Notes: N – New parts
M – Minimum order/supply quantity
R – Rank
— 12 —
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MA0300941A
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