Casio CTK-330 User manual

POWER/MODE

FINGERED

CASIO CHORD

NORMAL

OFF

VOLUME SYNCHRO/

FILL-IN START/

STOP TEMPO

TRANSPOSE/

TUNE

PIANO

PIANO 1

PIANO 2

HONKY-TONK

STUDIO PIANO

ELEC PIANO 1

ELEC PIANO 2

ELEC PIANO 3

ELEC PIANO 4

HARPSICHORD

CLAVELECTRO

100 TONES

ORGAN

ELEC ORGAN 1

ELEC ORGAN 2

ELEC ORGAN 3

ELEC ORGAN 4

CHURCH ORGAN

PIPE ORGAN

REED ORGAN

ACCORDION

BANDONEON

HARMONICA

GUITAR/BASS

GUT GUITAR

ACOUS GUITAR

JAZZ GUITAR

ELEC GUITAR

MUTE GUITAR

DIST GUITAR

WOOD BASS

ELEC BASS

SLAP BASS

BANJO

STRINGS/ENSEMBLE

VIOLIN

CELLO

HARP

STRINGS 1

STRINGS 2

STRINGS 3

SYNTH-STR 1

SYNTH-STR 2

CHIOR

VOICE

BRASS

TRUMPET

TUBA

BRASS SECTION

FRENCH HORN 1

FRENCH HORN 2

BRASS 1

BRASS 2

SYNTH-BRASS 1

SYNTH-BRASS 2

SYNTH-BRASS 3

REED/PIPE

SOPRANO SAX

ALTO SAX

TENOR SAX

OBOE

CLARINET

PICCORO

FLUTE

RECORDER

FLUTE ENSEMBLE

WHISTLE

SYNTH-SOUND 1

SYNTH-LEAD 1

SYNTH-LEAD 2

SYNTH-LEAD 3

SYNTH-CALLIOPE

SYNTH-PAD 1

SYNTH-PAD 2

SYNTH-PAD 3

GRASS HARMONICA

COUNTRY FARM

SYNTH-BASS

SYNTH-SOUND 2

PEAL DROP

COSMIC SOUND

SOUNDTRACK

SPACE PAD

SYNTH-SFX

SE 1 (VEHICLE)

SE 2 (TELEPHONE)

SE 3 (SPACE)

SE 4 (INVADER)

SE 5 (FUNNY)

LAYER

STRINGS PIANO

STRINGS EP

CHOIR EP

CHOIR ORGAN

STRINGS GUITAR

STRINGS HARP

BRASS STRINGS

VIB PAD

12 STR GUITAR

CHOIR STRINGS

SPLIT/PERCUSSION

BRASS/PIANO

BRASS/E.PIANO

BRASS/VIB

BRASS/G.GUITAR

BRASS/D.GUITAR

STRINGS/PIANO

STRINGS/TRUMPET

VIBRAPHONE

MARIMBA

PERCUSSION

POPS

POP FUSION

BALLAD

POP BALLAD

RAP POP

SOUL BALLAD

FUNKY POP

16 BEAT

8 BEAT 1

8 BEAT 2

POPS

50 RHYTHMS 20 SONG BANK

ROCK

ROCK WALTZ

SLOW ROCK

SOFT ROCK 1

SOFT ROCK 2

FOLKIE POP

60' S SOUL

ROCK

HEAVY METAL

50'S ROCK

CHICAGO BLUES

JAZZ/DANCE

BIG BAND

SLOW SWING

FOX TROT

JAZZ WALTZ

ACID JAZZ

LATIM FUSION

TRANCE

DISCO

RAP

FUNK

EUROPEAN/LATIN

POLKA

MARCH

SLOW WALTZ

WALTZ

TANGO

BOSSA NOVA

SAMBA

MAMBO

RHUMBA

CHA-CHA-CHA

VARIOUS

MERENGUE

RAGGAE

SKA

TEX-MEX

FOLKLORE

COUNTRY

SLOW GOSPEL

ADANI

BAROQUE

ENKA

SERENADE "EINE KLEINE NACHTMUSIK"

TWINKLE TWINKLE LITTLE STAR

ACH DU LIEBER AUGUSTIN

AMAZING GRACE

ODE TO JOY

LONDON BRIDGE

LONDONDERRY AIR

GREENSLEEVES

AULD LANG SYNE

JOY TO THE WORLD

JINGLE BELLS

YANKEE DOODLE

SANTA LUCIA

WHEN THE SAINTS GO MARCHING IN

ALOHA OE

SPRING FROM "THE FOUR SEASONS"

LITTLE BROWN JUG

MARCH FROM "THE NUTCRACKER"

THE ENTERTAINER

O CHRISTMAS TREE

TONE

RHYTHM

SONG

BANK

MELODY

ON/OFF

MULTI FUNCTION DISPLAY

ELECTRIONIC KEYBOARD

CTK-330

— 2 —

CONTENTS

Specifications .......................................................................................................................... 2

Block Diagram......................................................................................................................... 3

Circuit Description ...................................................................................................................4

Major Waveforms .................................................................................................................... 7

Schematic Diagrams ............................................................................................................... 8

Printed Circuit Board .............................................................................................................10

Exploded View ...................................................................................................................... 11

Parts List ............................................................................................................................... 13

SPECIFICATIONS

GENERAL

Number of keys: 49

Polyphonic: 12-note

Preset tones: 100

Auto-rhythms: 50, Tempo control: 40 to 255

Accompaniment: Casio Chord, Fingered

Song bank: 20-tune

Tuning control: 440 Hz ±50 cents

Built-in speakers: 4 inch dia. 2 W input rating: 2 pcs

Terminals: Stereo standard Jack (Output impedance: 100 ohm, Output voltage: 3 V (rms)

MAX

Power source: 2-way AC or DC source

AC: AC adapter

DC: 6 AA size dry batteries

Power consumption: 7.2 W

Dimensions(HWD): 988 ×311 ×125 mm (38-15/16 ×12-1/4 ×4-15/16 inches)

Weight: 3.5 kg (7.7 lbs) excluding batteries

ELECTRICAL

Current drain with 9 V DC:

No sound output 120 mA ±30%

Maximum volume 650 mA ±30%

with white keys C1 to G2 pressed in Synth-Lead 1

Volume: 9

Phone output Level (Vrms with 8 ohm load each channel):

with key E3 pressed in Synth-Lead 1 80 mV ±30%

Sound Pressure (at 10 cm away from speaker):

with key E3 pressed in Synth-Lead 1 100 dB ±10 dB

Minimum operating voltage: 6.0 V

— 3 —

CPU

MSM 6755B-08

LSI101

Keyboard

Buttons

LED

Reset IC

IC102 Oscillator

X101, Q107

Q111

Power Supply Circuit

Q101 ~ Q104, D106

Power Amp.

LA4598

IC101

Filter (L)

Q105

Filter (R)

Q106

Output

DC+9V IN

VC  AVDD DVDD LVDD

APO

CC1 ~ CC3

La ~ Lg,

Lp KO8 ~

KO11 KI0 ~ KI7

KO0 ~ KO7

BLOCK DIAGRAM

— 2 —

KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7

KO0 C2 G#2 E3 C4 G#4 E5 C6

KO1 C#2 A2 F3 C#4 A4 F5

KO2 D2 A#2 F#3 D4 A#4 F#5

KO3 D#2 B2 G3 D#4 B4 G5

KO4 E2 C3 G#3 E4 C5 G#5

KO5 F2 C#3 A3 F4 C#5 A5

KO6 F#2 D3 A#3 F#4 D5 A#5

KO7 G2 D#3 B3 G4 D#5 B5

KO8 0 1 2 3 4 Start/Stop Tempo

Up Volume

KO9 56789

Tempo

Down Volume

Down Synchro/

Fill-In

KO10 Tone Rhythm Song

Bank Melody

On/Off

KO11 Fingered CASIO

Chord Normal Power Off

CIRCUIT DESCRIPTION

KEY MATRIX

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

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 —

Amp.

LA4598 Filter

Block CPU

MSM6755B-08

Pin No. Terminal In/Out Function

1 ~ 29 MA14 ~ NC2 — Not used.

30 DGND In Ground (0 V) source

31 DVCC In +5 V source

32, 33 XTLO, XTLI In/Out 20 MHz clock input/output

34 NC3 — Not used. Connected to ground.

35 RSTB In Reset signal input

36 P24/RXD — Not used. Connected to +5 V.

37 P25/TXD — Not used.

38 NMI In Power on signal input. Connected to +5 V.

39 APO Out APO (Auto Power Off) signal output

40 NC4 — Not used.

41 REFH Out Terminal for the built-in DAC

42, 43 NC5, NC6 — Not used.

44 DAOR Out Right channel sound waveform output

45 NC7 — Not used.

46 AVdac In +5 V source for the built-in DAC and ADC

47 DAOL Out Left channel sound waveform output

48 REFL Out Terminal for the built-in DAC and ADC

49 AGdac In Ground source for the built-in DAC

50 AGadc In Ground source for the built-in ADC

51 ANI — Not used. Connected to ground.

52 AVadc In +5 V source for the internal ADC

53 NC8 — Not used. Connected to +5 V.

54 MOD0 In Mode selection terminal

55, 56 MOD1, MOD2 In Mode selection terminal

57 KO9/P40 In APO cancelation signal input

58 ~ 65 KI0/P30 ~ KI7/P37 In Terminals for key/button input signal

66 ~ 73 KO1/P50 ~ KO8/P57 Out Terminals for key scan signal

74 ~ 77 P20 ~ P23 Out Terminals for button scan signal

78 NC9 — Not used.

79 LVCC In +5 V source

80 ~ 82 CC1 ~ CC3 Out LED common signal output

83 ~ 87 — — Not used.

88 ~ 95 La ~ Lg, Lp Out LED segment signal output

96 LGND In Ground (0 V) source

97 ~ 100 — — Not used.

CPU (LSI101: MSM6755B-06)

The CPU contains a sound data ROM and a DAC (Digital to Analog Convertor), and it provides left and right

channel sound waveforms in accordance with the pressed key and the selected tone.

The following table shows the pin functions of LSI101.

FILTER BLOCK

Since the sound signal from the CPU is a stepped waveform, the filter block is added to smooth the waveform.

— 4 —

CPU

LSI101

MSM6755B

La~Lg, Lp

CC1~CC3

LVDD

Q106~Q108

LED Driver

POWER AMPLIFIER (IC101: LA4598)

The power amplifier is a two-channel amplifier with standby switch.

The following table shows the pin function of IC101.

Pin No. Terminal In/Out Function

1 Power GND In Ground (0 V) source

2 Ch1 B.S. — Terminal for a bootstrap capacitor

3 Ch1 OUT Out Channel 1 output

4 VCC In +9 V source

5 Ch1 N.F. In Negative feedback input

6 Ch1 IN In Channel 1 input

7 D.C. — Terminal for a decoupling capacitor

8 Pre GND In Ground (0 V) source

9 Stand by In Power control signal input. 0 V: Off, +9 V: On

10 Ch2 IN In Channel 2 input

11 Ch2 N.F. In Negative feedback input

12 Ch2 OUT Out Channel 2 output

13 Ch2 B.S. — Terminal for a bootstrap capacitor

14 NC — Not used

LED DRIVING

— 5 —

Amp.

LA4598 Filter

Block CPU

MSM6755B-08

Pin No. Terminal In/Out Function

1 ~ 29 MA14 ~ NC2 — Not used.

30 DGND In Ground (0 V) source

31 DVCC In +5 V source

32, 33 XTLO, XTLI In/Out 20 MHz clock input/output

34 NC3 — Not used. Connected to ground.

35 RSTB In Reset signal input

36 P24/RXD — Not used. Connected to +5 V.

37 P25/TXD — Not used.

38 NMI In Power on signal input. Connected to +5 V.

39 APO Out APO (Auto Power Off) signal output

40 NC4 — Not used.

41 REFH Out Terminal for the built-in DAC

42, 43 NC5, NC6 — Not used.

44 DAOR Out Right channel sound waveform output

45 NC7 — Not used.

46 AVdac In +5 V source for the built-in DAC and ADC

47 DAOL Out Left channel sound waveform output

48 REFL Out Terminal for the built-in DAC and ADC

49 AGdac In Ground source for the built-in DAC

50 AGadc In Ground source for the built-in ADC

51 ANI — Not used. Connected to ground.

52 AVadc In +5 V source for the internal ADC

53 NC8 — Not used. Connected to +5 V.

54 MOD0 In Mode selection terminal

55, 56 MOD1, MOD2 In Mode selection terminal

57 KO9/P40 In APO cancelation signal input

58 ~ 65 KI0/P30 ~ KI7/P37 In Terminals for key/button input signal

66 ~ 73 KO1/P50 ~ KO8/P57 Out Terminals for key scan signal

74 ~ 77 P20 ~ P23 Out Terminals for button scan signal

78 NC9 — Not used.

79 LVCC In +5 V source

80 ~ 82 CC1 ~ CC3 Out LED common signal output

83 ~ 87 — — Not used.

88 ~ 95 La ~ Lg, Lp Out LED segment signal output

96 LGND In Ground (0 V) source

97 ~ 100 — — Not used.

CPU (LSI101: MSM6755B-06)

The CPU contains a sound data ROM and a DAC (Digital to Analog Convertor), and it provides left and right

channel sound waveforms in accordance with the pressed key and the selected tone.

The following table shows the pin functions of LSI101.

FILTER BLOCK

Since the sound signal from the CPU is a stepped waveform, the filter block is added to smooth the waveform.

— 6 —

CPU

LSI101

MSM6755B

La~Lg, Lp

CC1~CC3

LVDD

Q106~Q108

LED Driver

POWER AMPLIFIER (IC101: LA4598)

The power amplifier is a two-channel amplifier with standby switch.

The following table shows the pin function of IC101.

Pin No. Terminal In/Out Function

1 Power GND In Ground (0 V) source

2 Ch1 B.S. — Terminal for a bootstrap capacitor

3 Ch1 OUT Out Channel 1 output

4 VCC In +9 V source

5 Ch1 N.F. In Negative feedback input

6 Ch1 IN In Channel 1 input

7 D.C. — Terminal for a decoupling capacitor

8 Pre GND In Ground (0 V) source

9 Stand by In Power control signal input. 0 V: Off, +9 V: On

10 Ch2 IN In Channel 2 input

11 Ch2 N.F. In Negative feedback input

12 Ch2 OUT Out Channel 2 output

13 Ch2 B.S. — Terminal for a bootstrap capacitor

14 NC — Not used

LED DRIVING

— 7 —

MAJOR WAVEFORMS

1Clock pulse

MSM6755B-08 pin 32 2Reset signal

MSM6755B-08 pin 35

3APO signal

MSM6755B-08 pin 39

4Sound waveform (R-ch)

MSM6755B-08 pin 44

5Sound waveform (L-ch)

MSM6755B-08 pin 47

6Button scan signal KO10

MSM6755B-08 pin 76

7Button scan signal KO11

MSM6755B-08 pin 77

Tone: whistle

Key: A4

Volume:

8LED common signal CC2

MSM6755B-08 pin 81

9LED common signal CC3

MSM6755B-08 pin 82

— 8 —

SCHEMATIC DIAGRAMS

Main PCB KDM441-MA1M/MA2M

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