Casio_CTK-100_Service_Manual.pdf

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CTK-100
CTK-100
ELECTRONIC KEYBOARD
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
SPECIFICATIONS
General
Number of Keys:
Polyphonic:
Preset Tones:
Auto-Rhythms:
Auto-Accompaniment:
Demonstration Tune:
Built-In Speakers:
Terminals:
Power Source:
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)
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
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:
with key G2 pressed in Street Organ tone
Minimum Operating Voltage:
47 mA
±
20%
413 mA
±
20%
76 mV
±
20%
935 mV
±
20%
6.0 V
—1—
BLOCK DIAGRAM
KO0~KO9
Output Jack
CPU
—2—
MSM6387-13
Amplifier
LA4598
Speakers
Keyboard
Main Volume
Filter
T3/T4
KI0~KI7
VC +9V
VDD +5V
Power supply circuit
T2
Oscillator
Switches
CIRCUIT DESCRIPTION
Key and Switch Matrix
KI0
KO0
(KC1)
KO1
(KC2)
KO2
(KC3)
KO3
(KC4)
KO4
(KC5)
KO5
(KC6)
KO6
(KC7)
KO7
(KC8)
KO8
(KC9)
KO9
0
2
4
6
8
Tone
Tempo
Up
Start/
Stop
Demo
KI1
1
3
5
7
9
Rhythm
Tempo
Down
Fill-In
KI2
C2
F#2
C3
F#3
C4
F#4
C5
F#5
C6
KI3
C#2
G2
C#3
G3
C#4
G4
C#5
G5
Accomp.
Volume 1
(Min)
KI4
D2
G#2
D3
G#3
D4
G#4
D5
G#5
KI5
D#2
A2
D#3
A3
D#4
A4
D#5
A5
Accomp.
Volume 2
KI6
E2
A#2
E3
A#3
E4
A#4
E5
A#5
Accomp.
Volume 3
Fingered
KI7
F2
B2
F3
B3
F4
B4
F5
B5
Accomp.
Volume 4
(Max)
CASIO
Chord
Power
OFF
Normal
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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