Casio CTK-100 User Manual

R

INDEX

CTK-100

(with price)

CTK-100

ELECTRONIC KEYBOARD

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: 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 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)
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

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 Ω 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

— 1 —

— 2 —

Speakers

Output Jack

Amplifier

LA4598

Main Volume

BLOCK DIAGRAM

Filter

T3/T4

KO0~KO9

CPU

MSM6387-13

KI0~KI7

VC +9V

VDD +5V

Power supply circuit

T2

Keyboard

Switches

Oscillator

Key and Switch Matrix

0IK1IK2IK3IK4IK5IK6IK7IK

CIRCUIT DESCRIPTION

0OK

)1CK(

1OK

)2CK(

2OK

)3CK(

3OK

)4CK(

4OK

)5CK(

5OK

)6CK(

6OK

)7CK(

7OK

)8CK(

8OK

)9CK(

01 2C2#C2D2#D2E2F

23 2#F2G2#G2A2#A2B

45 3C3#C3D3#D3E3F

67 3#F3G3#G3A3#A3B

89 4C4#C4D4#D4E4F

enoTmhtyhR4#F4G4#G4A4#A4B

opmeT

pU

/tratS

potS

omeD6C

9OK

opmeT

nwoD

5C5#C5D5#D5E5F

nI-lliF5#F5G5#G5A5#A5B

.pmoccA

1emuloV

)niM(

rewoP

FFO

.pmoccA

2emuloV

.pmoccA

3emuloV

lamroNderegniF

.pmoccA

4emuloV

)xaM(

OISAC
drohC

Nomenclature of Keys

C#2

D#2

C2

D2

E2

F2

G2

A2

C#3A#2G#2F#2

D#3

B2 C3 D3 E3

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

— 3 —

C5 D5 E5 F5 G5 A5 B5

C6