Casio CTK-731 Bedienungsanleitung

BACK LIGHT LCD

INTRO

RECORD SONG PATTERN

DSP

CONTRAST

FREE SESSION

ONE TOUCH PRESET

TONE

RHYTHM

LAYER/AUTO HARMONIZE

SPLIT

MIN

MAX

FULL RANGE

CHORD

000-009

010-019

020-029

030-039

040-049

050-059

060-069

070-079

080-089

090-099

100-109

8 BEAT

REVERB 1 LAYER

AUTO

HARMONIZE

TOUCH

RESPONSE

SPLIT

REVERB 2

REVERB 3

CHORUS

TREMOLO

PHASE SHIFTER

ORGAN SPEAKER

ENHANCER

FLANGER

EQ LOUDNESS

000-007

PIANO

008-015

CHROMATICPERC

016-023

ORGAN

024-031

GUITAR

032-039

BASS

040-047

STR/ORCHESTRA

048-055

ENSEMBLE

056-063

BRASS

064-071

REED

072-079

PIPE

080-087

SYNTH-LEAD

088-095

SYNTH-PAD

096-103

SYNTH-SFX

104-111

ETHNIC

112-119

PERCUSSIVE

120-127

SOUND EFFECTS

128-191

VARIATION TONE

192-199

DRUM SET

200-231

USER TONE

16 BEAT

ROCK

POPS I

POPS II

JAZZ

EUROPEAN

LATINI

LATINII/VARIOUS I

VARIOUS II

USER RHYTHM

FINGERED

CASIO CHORD

FILL-IN

NORMAL/

FILL-IN

VARIATION/ ENDING

SYNCHRO/

MUSICAL INFOMATION SYSTEM

10 DSP

2HD/DD FLOPPY DISK DRIVE

2HD/2DD FLOPPY DISK DRIVE

BASS REFLEX SPEAKER SYSTEM

789

456

123

SYNTH

DELETE

/NO

TRANSPOSE/TUNE/MIDI

TOUCH RESPONSE

DISK

/YES

GENERAL

EXTERNAL

INTERNAL

GM SOUND KEYBOARD

CTK-731

JULY.1999

CTK-731

Ver.3: Dec. 2007

INDEX

CONTENTS

Specifications ---------------------------------------------------------------------------------------------- 2

Block Diagram --------------------------------------------------------------------------------------------- 4

Circuit Description --------------------------------------------------------------------------------------- 5

Diagnostic Program------------------------------------------------------------------------------------ 20

Major Waveforms --------------------------------------------------------------------------------------- 26

Printed Circuit Board ---------------------------------------------------------------------------------- 27

Exploded View ------------------------------------------------------------------------------------------- 31

Parts List--------------------------------------------------------------------------------------------------- 32

Schematic Diagrams----------------------------------------------------------------------------------- 35

— 2 —

SPECIFICATIONS

GENERAL

Keyboard: 61 standard-size keys, 5 octaves (with touch response on/off; ExLight/

Light/Normal/Heavy touch)

Tones: 232 (128 General MIDI, 64 variation, 8 drum, 32 user); with layer and

split

Rhythm instrument tones: 53

Polyphony: 32 notes maximum (16 for certain tones)

Digital effects: 10 (REVERB 1, 2, 3; CHORUS; TREMOLO; PHASE SHIFTER; OR-

GAN SPEAKER; ENHANCER; FLANGER; EQ LOUDNESS)

Auto accompaniment

Rhythm patterns: 110 (100 + 10 user rhythms)

Tempo: Variable (226 steps, = 30 to 255)

Chords: 3 fingering methods (CASIO CHORD, FINGERED, FULL RANGE

CHORD)

Rhythm controller: Start/Stop, Intro, Normal/Normal Fill-In, Variation/Variation Fill-In,

Synchro/Ending

Accomp volume: 0 to 127 (128 steps)

One touch presets: Recalls settings for tone, tempo, layer, and Auto Harmonize in accor-

dance with rhythm.

Auto harmonize: Automatic addition of notes that harmonize with melody note in ac-

cordance with specified Auto Accompaniment chords.

Free session

Number of patterns: 100 (Auto Accompaniment function based on preset chord progres-

sions.)

Song sequencer

Songs: 2

Recording tracks: 6 (2 through 6 are melody tracks)

Recording method: Real-time

Memory capacity

(total for two songs): Approximately 4,900 notes

Punch in: Supported

Pattern sequencer

Number of patterns: 10 (Rhythm numbers 100 to 109)

Memory capacity: Approximately 7,000 notes

Elements: Intro, Normal, Variation, Normal Fill-In, Variation Fill-In, Ending

Parts: Chord 1, 2, 3; Bass; Rhythm

Recording method: Real-time

Registration memory

Number of setups: 20 (5 setups ×4 banks)

Memory contents: Tone, Rhythm, Tempo, Split on/off, Split point, Layer on/off,Auto Har-

monize on/off, Mixer settings, Keyboard channel on/off, DSP (digital

effect) on/off, DSP (digital effect) settings, Accompaniment mode,

Touch Response settings, Assignable jack setting, Transpose, Tun-

ing, Pitch Bend range, Sound range shift on/off

Demo tunes: 2

Synthesizer

Parameters: PCM set, amp envelope set, attack rate, release rate, pitch envelope

set, pitch, level, touch sensitivity, pan, filter sensitivity, filter level, trans-

pose

Mixer Channels: 16

Modes: Internal, External, External/Solo, External/Play

Parameters: Program change number, volume, expression, pan, coarse tuning,

fine tuning, Effect Send

MIDI: 16-channel multi-timbre receive, General MIDI Level 1

— 3 —

Other functions

Pitch bend range: Adjustable (12 semitones upwards and downwards)

Modulation: Equipped

Transpose: 25 steps (–12 semitones to +12 semitones)

Tuning: Adjustable (A4 = approximately 440Hz ±50 cents)

Terminals

MIDI terminal: IN, OUT

Sustain/Assignable jack: Standard jack (sustain, sostenuto, soft, rhythm start/stop)

Headphones/Output: Stereo standard jack

Output Impedance: 250 Ω

Output Voltage: 6 V (RMS) MAX

12 V DC

Floppy disk drive

Type: 3.5" FDD

Formats: 2DD (720KB MS-DOS format)

2HD (1.44MB MS-DOS format)

Functions: Save and load of user tones, user rhythms, sequencer, and registration

data; playback of SMF; disk formatting; file delete; accompaniment pat-

tern style conversion

Power supply: Dual power supply system

Batteries Six D-size batteries

Battery life Approximately 3 hours continuous operation on alkaline batteries

AC adapter: AD-12

Auto power off: Turns power off approximately six minutes after last key operation. En-

abled under battery power only, can be disabled manually.

Speaker output: 5 W + 5 W

Power consumption: 12 V 18 W

Dimensions: 96.0 ×37.5 ×14.8 cm (37 13/16 ×14 3/4 ×5 7/8 inch)

Weight (without batteries): Approximately 7.0 kg (15.5 lbs)

Standard accessories: Music Stand; Pattern Conversion Disk; Data Disk; Disk User’s Guide;

Keyboard User’s Guide, Rhythm Tone Plate

ELECTRICAL

Current drain with 12 V DC:

No sound output 400 mA ±20 %

Maximum volume 2330 mA ±20 %

with 10 keys from C1 to E2 pressed in whistle tone

Volume: MAX., Velocity: MAX.

DSP0: Reverb1, FDD: Replay

Phone output level (Vrms with 8 Ωload each channel):

with tone Synth-Bass 4 tone L-ch (Key C4) 77 mV ±20 %

Volume: MAX., Velocity: MAX. R-ch (Key F3) 75 mV ±20 %

DSP0: Reverb1

Speaker output level (Vrms with 8 Ωload each channel):

with tone Synth-Bass 4 tone L-ch (Key C2) 5.7 mV ±20 %

Volume: MAX., Velocity: MAX. R-ch (Key E1) 5.6 mV ±20 %

DSP0: Reverb1

Output level (Vrms with 47 kΩload each channel):

with tone Synth-Bass 4 tone L-ch (Key D3) 2400 mV ±20 %

Volume: MAX., Velocity: MAX. R-ch (Key F3) 2150 mV ±20 %

DSP0: Reverb1

— 4 —

BLOCK DIAGRAM

Back Light Driver

T501

Q501, Q502

ROM2

MX23C3210MC-12CA89

LSI3 (32Mbit)

ROM1

MX23C8100MC-12CA99

LSI2 (8Mbit)

RAM2

TC551001BFL-70L

LSI8 (1Mbit)

VBR VBR

VBR

AVDDDVDDFVDDCVDDVCCVDDVC

VDD

APO

NMI

SWCK

LSDT

IC1

LWR, RD S1 HWR, RD HWR

RD, HWR,

LWR

RD, HWR,

LWR

1RD, 1HWR, 1LWR

TEND, DREQ, CS2, CS3, B1-5

A0 ~ A15

KI0 ~ KI7

KC0 ~ KC8

SEG1 ~ SEG40

OUT

MIDI

COM1 ~ COM16

LEDA ~ LEDF

LEDCK, LEDCL

D0 ~ D15

D15

Chip Selector

TC74VHCO8F

IC4

S-Register

TC74HC164

IC302

S-Register

TC74HC164

IC301

LCD

FDD Controller

HD63266F

LSI6

3.5" FDD Unit

DF354H064A

Back up

Power

CR2032

Power Supply Circuit

IC204, Q203

Q204, Q208, Q210

Q205,

Q206

CPU

HD6433042SB51F

LSI9

Working

RAM

TC55257

DFL-70L

LSI5

(256Kbit)

LPF

(L) LPF

(R)

D8 ~ D15 RESET

RESET

RD,

HWR

ECEB, EOEB

EWEB

RESB

PBO

LCD Driver

SED1278F2A

LSI501

DB4

~DB7

CONT,

LRS,

LR/W

Keyboard

SI0 ~

SI7

FI0 ~

FI7

KC0

KC7

WOK1

SOLP

BOK RAM1

TC551001BFL-70L

LSI7 (1Mbit)

Key Controller

TC190C020AF-001

LSI10

Reset IC

RN5VD40AA

IC3

Out put

(L) (R)

Speakers

LEDs

VDD

Buttons

A1 ~ A4

D0 ~ D15

RA0 ~ RA20

ED0 ~ ED8

EA0 ~ EA14

RD0 ~ RD15

Main

Volume

D/A Converter

µPD6376GS

LSI1

Power Amp.

LA4620

IC201

DSP

HG51B155FD

LSI4

A0 ~ A3

Back Light

— 5 —

KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7

FI0 C2 1C#2 1D2 1D#2 1E2 1F2 1F#2 1G2 1

SI0 C2 2C#2 2D2 2D#2 2E2 2F2 2F#2 2G2 2

FI1 G#2 1A2 1A#2 1B2 1C3 1C#3 1D3 1D#3 1

SI1 G#2 2A2 2A#2 2B2 2C3 2C#3 2D3 2D#3 2

FI2 E3 1F3 1F#3 1G3 1G#3 1A3 1A#3 1B3 1

SI2 E3 2F3 2F#3 2G3 2G#3 2A3 2A#3 2B3 2

FI3 C4 1C#4 1D4 1D#4 1E4 1F4 1F#4 1G4 1

SI3 C4 2C#4 2D4 2D#4 2E4 2F4 2F#4 2G4 2

FI4 G#4 1A4 1A#4 1B4 1C5 1C#5 1D5 1D#5 1

SI4 G#4 2A4 2A#4 2B4 2C5 2C#5 2D5 2D#5 2

FI5 E5 1F5 1F#5 1G5 1G#5 1A5 1A#5 1B5 1

SI5 E5 2F5 2F#5 2G5 2G#5 2A5 2A#5 2B5 2

FI6 C6 1C#6 1D6 1D#6 1E6 1F6 1F#6 1G6 1

SI6 C6 2C#6 2D6 2D#6 2E6 2F6 2F#6 2G6 2

FI7 G#6 1A6 1A#6 1B6 1C7 1

SI7 G#6 2A6 2A#6 2B6 2C7 2

CIRCUIT DESCRIPTION

KEY MATRIX

Note: Each key has two contacts, the first conatct 1and second contact 2.

Key

Second contact 2 First contact 1 FI

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

C2 D2 E2 F2 G2 A2 B2 C3 D3 E3 B6A6G6F6E6D6 C7

C#3A#2G#2

F#2D#2

C#2 A#6

G#6F#6D#6

C#6

— 6 —

KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7

KC0 MODE INTRO A SPLIT

KC1 RECORD B ▲2

KC2 SONG C RHYTHM 5

KC3 PATTERN D ENTER TONE 8

KC4 DSP E DISK 0

KC5 STORE 1 3

KC6 46

KC7 BANK ▼SYNTH 7 9

BUTTON MATRIX

LED-B

FINGERD

LED-A

FULL RANGE

CHORD

LED MATRIX

LED-C

CASIO CHORD

LED-E

DEMO

LED-D

FREE

SESSION

LED-F

DISK

CON-

TRAST

FREE

SESSION

ONE TOUCH

PRESET

NORMAL/

FILL-IN

VARIATION/

FILL-IN

SYNCHRO/

ENDING

START/

STOP

TEMPO

▼

TEMPO

▲

TR6

CH16

TOUCH

RESPONSE

TRANS-

POSE

LAYER/

AUTO HARMO

▼/NO

—

▲/YES

DMSW DEMO

▲

MIXER

SELECT

UPPER1

CH1

LOWER1

CH3

UPPER2

CH2

LOWER2

CH4

ACC VOL.

CH5

CHORD1

CH6

CHORD2

CH7

CHORD3

CH8

BASS

CH9

TR1

CH11

RHYTHM

CH10

TR2

CH12

TR3

CH13

TR4

CH14

TR5

CH15

— 7 —

MEMORY DEVICES

Each memory device has the following data.

1RAM1 :

S-RAM for operation program, Register, Pattern, Song

and SMF data from FDD. (Lower part of data bus)

2RAM2 :

S-RAM for operation program, Register, Pattern, Song

and SMF data from FDD. (Upper part of data bus)

3Internal ROM of CPU :

Main program data for system operation

4Internal RAM of CPU :

Work area for system operation

5ROM1 :

Demo,Accompaniment data, Song, Pattern, Synth, Disk

mode

6ROM2 :

Sound Waveforms/Tone data Digital sound effect

7Working RAM :

Work area for DSP

CPU

RAM1

1 Mbit

LSI7

ROM

RAM

512 kbit

16 kbit

DSP

LSI9

LSI4

Working RAM

256 kbit

LSI5

Internal Memory

ROM1

8 Mbit

LSI2

RAM2

1 Mbit

LSI8

ROM2

32 Mbit

LSI3

VDD Battery set

RESET

CPU

HD6433042SB51F

LSI9

FDD Controller

HD63266F

LSI6

RESET

Power Supply

Circuit

DSP

HG51B155FD

LSI4

RESB

Key Controller

TC190C020AF-001

LSI10

DVDD

VDD

DVDD

RESET

APO

PWSW

From power switch

RES

NMI

PB0

PA7

RESET

PW/SW ON

APO

DVDD

(5V)

Initial reset

When batteries are set or an AC adapter is connected, the reset IC provides a low pulse to the CPU.

When the power switch is pressed, the CPU receives a low pulse of POWER signal. The CPU first raises

APO signal to +5 V to generate DVDD voltage, then raises RESET signal to +5 V. During this period the

DSP, the key controller and FDD controller LSIs initialize their internal circuits.

RESET CIRCUIT

— 8 —

POWER SUPPLY CIRCUIT

The power supply circuit provides various voltages as shown below.

The voltage VDD (+5 V) is provided as long as batteries or AC adaptor is set.

Other voltages are controlled by APO (Auto Power Off) signal from CPU.

The regulator IC BA9700A generates square waveform from pin 5 as PWM (Pulse Wide Modulation).

The LC filter makes stable output voltage (+5 V) for each circuit as shown above.

LC Filter

Switching

Transistors

Regulator IC

From

Batteries or

AC Adaptor (To back light)

(To LCD)

(To FDD)

(To digital)

(To analog)

+9V ~ +12 V

LC Filter

CPU

HD6433042SB51F

LSI9

PA7

NMI

PW/SW

APO

NMI

PW/ON

APO

— 9 —

DSP and DAC CIRCUIT

The DSP (Digital Signal Processor) and DAC (Digital Analog Converter) consists of the following circuits.

RA22

Working RAM (256K-bit)

TC55257DFL-70L

LSI5

ROM2

MX23C3210MC-12CA89

LSI3 (32Mbit)

ROM1

MX23C8100MC-12CA99-465

LSI2 (8Mbit)

SOLP

BOK

WOK1

EA0 ~

EA14

D0 ~

D15

ED0 ~

ED15

KC0 ~

KC7

SI0 ~ SI7

FI0 ~ FI7

RA0 ~

RA18

RA0 ~ RA20

RA23

CE A0 ~ A18 Q0 ~ Q15 CE A0 ~ A20 Q0 ~ Q15

D0 ~ D15 A0 ~ A14

24.576 MHz

DAC

UPD6376GS

LOUT

ROUT

SOLP: Sound data

BOK: Bit clock

WOK1: Word clock

CLK

LRCK

DSP

HG51B155FD

LSI4

CPU

HD6433042SB51F

LSI9

Key Controller

TC190C020AF-001

LSI10

RD0 ~ RD15

RA0 ~

RA20

D8 ~

D15 Control

data

key

data

key

data

Key-

board

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