(with price)
CTK-100
ELECTRONIC KEYBOARD
R
CTK-100
INDEX
CONTENTS
SPECIFICATIONS .......................................................................................................... 1
BLOCK DIAGRAM ......................................................................................................... 2
CIRCUIT DESCRIPTION ................................................................................................ 3
TROUBLESHOOTING.................................................................................................... 5
IC AND TRANSISTOR LEAD IDENTIFICATIONS ........................................................ 6
SCHEMATIC DIAGRAMS .............................................................................................. 7
PCB VIEW & MAJOR WAVEFORMS ............................................................................ 8
EXPLODED VIEW ........................................................................................................ 10
PARTS LIST ................................................................................................................. 11
-- 1 --
SPECIFICATIONS
Electrical
Current Drain with 9V DC:
No Sound Output
47 mA
± 20%
Maximum Volume
413 mA
± 20%
with keys C2, D2, E2 and F2 pressed in
Car-Horn tone, Volume; Maximum
Output Level (Vrms with 8
load each channel):
76 mV
± 20%
with key G2 pressed in Street Organ tone
Speaker Input Level:
935 mV
± 20%
with key G2 pressed in Street Organ tone
Minimum Operating Voltage:
6.0 V
General
Number of Keys:
49
Polyphonic:
8-note
Preset Tones:
100
Auto-Rhythms:
100
Auto-Accompaniment:
CASIO Chord/Fingered
Demonstration Tune:
Classical Medley
Built-In Speakers:
10 cm dia. 1.0W Input Rating: 2 pcs.
Terminals:
Output Jack [Output Impedance: 120
, 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)
Power Consumption:
5.0 W
Dimentions:
86 x 857 x 285 mm (HWD)
(3-3/8 x 33-3/4 x 11-1/4 inches) (HWD)
Weight:
3.2 kg (7.0 lbs) excluding batteries
Standard Accessory:
Music stand
--
2
--
BLOCK DIAGRAM
KO0~KO9
KI0~KI7
Keyboard
Switches
Oscillator
VDD +5V
Power supply circuit
VC +9V
Amplifier
Speakers
Output Jack
LA4598
Filter
T3/T4
CPU
MSM6387-13
Main Volume
T2
-- 3 --
0
I
K1
I
K2
I
K3
I
K4
I
K5
I
K6
I
K7
I
K
0
O
K
)
1
C
K
(
01
2
C2
#
C2
D2
#
D2
E2
F
1
O
K
)
2
C
K
(
23
2
#
F2
G2
#
G2
A2
#
A2
B
2
O
K
)
3
C
K
(
45
3
C3
#
C3
D3
#
D3
E3
F
3
O
K
)
4
C
K
(
67
3
#
F3
G3
#
G3
A3
#
A3
B
4
O
K
)
5
C
K
(
89
4
C4
#
C4
D4
#
D4
E4
F
5
O
K
)
6
C
K
(
e
n
o
Tm
h
t
y
h
R4
#
F4
G4
#
G4
A4
#
A4
B
6
O
K
)
7
C
K
(
o
p
m
e
T
p
U
o
p
m
e
T
n
w
o
D
5
C5
#
C5
D5
#
D5
E5
F
7
O
K
)
8
C
K
(
/
t
r
a
t
S
p
o
t
S
n
I
-
ll
i
F5
#
F5
G5
#
G5
A5
#
A5
B
8
O
K
)
9
C
K
(
o
m
e
D6
C
.
p
m
o
c
c
A
1
e
m
u
l
o
V
)
n
i
M
(
.
p
m
o
c
c
A
2
e
m
u
l
o
V
.
p
m
o
c
c
A
3
e
m
u
l
o
V
.
p
m
o
c
c
A
4
e
m
u
l
o
V
)
x
a
M
(
9
O
K
r
e
w
o
P
F
F
O
l
a
m
r
o
Nd
e
r
e
g
n
i
F
O
I
S
A
C
d
r
o
h
C
CIRCUIT DESCRIPTION
Key and Switch Matrix
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
F3
G3
A3
B3
C4
D4
E4
F4
G4
A4
B4
C5
D5
E5
F5
G5
A5
B5
C6
D#3
C#3
A#2
G#2
F#2
D#2
C#2
C2
D2
E2
F2
G2
A2
B2
C3
D3
E3