Casio CTK-611 Manuale utente

ELECTRONIC KEYBOARD

CTK-611

,,,,,,,,,,,,,,,,,,,,,,,,,,,

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POWER

FULL RANGE

CHORD

FINGERED

MAX START

TEMPO

REVERB

SYNTH

MIXER

MEMORY

STEP

ACCOMP

VOLUME

STOP

MIN

CASIO CHORD

NORMAL

FREE

SESSION

TOUCH

RESPONSE

LAYER

SPLIT

CURSOR

PITCH BEND MODE VOLUME INTRO SYNCHRO

ENDING

NORMAL

FILL-IN VAR

FILL-IN

REVERB

FREE

SESSION

LAYER

SPLIT

TOUCH

RESPONSE

HALL

STAGE

ROOM

SYNTH

MIXER

MEMORY

STEP

CHORD/1 23456

MEMORY TRACK/DRUM PAD

DEMO

TRANSPOSE/

TUNE/MIDI

RHYTHM TONE

ENTER

AMP

ENVELOPE

000-048 DECAY 00 FLAT

049-137 SUSTAIN 01-19 VIBRATO

20-49 OTHERS

PITCH

ENVELOPE

200 TONES

100 RHYTHMS

INDEX

MC-Service

CONTENTS

Specifications................................................................................................................................... 1

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

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

Adjustment ..................................................................................................................................... 11

Major Waveforms ........................................................................................................................... 12

Printed Circuit Boards .................................................................................................................... 13

Schematic Diagrams ...................................................................................................................... 14

Exploded View ............................................................................................................................... 19

Parts List ........................................................................................................................................ 20

— 1 —

SPECIFICATIONS

GENERAL

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

Drum pads: 6

Tones: 200 (128 General MIDI, 32 synthesized, 8 drum, 32 user); with layer and

split

Rhythm instrument tones: 51

Polyphony: 24 notes maximum (12 for certain tones)

Digital effects: 3 reverb types (HALL, STAGE, ROOM)

Auto accompaniment

Rhythm patterns: 100

Tempo: Variable (216 steps, = 40 to 255)

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

CHORD)

Rhythm controller: START/STOP, INTRO, NORMAL/NORMAL FILL-IN, VARIATION/VARI-

ATION FILL-IN, SYNCHRO/ENDING

Accomp volume: 0 to 127 (128 steps)

Free session

Number of patterns: 100 (auto-accompaniment in accordance with selected chord progres-

sion)

Memory function

Songs: 2

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

Recording methods: Real-time, step

Memory capacity: Approximately 5,200 notes (total for two songs)

Edit function: Equipped

Demo tunes: 2

Synthesizer function

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

pitch, level, touch sense, pan

Mixer function

Channels: 16

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

tuning, on/off/solo

MIDI: 16 multi-timbre receive, GM Level 1 standard

Other functions

Pitch bend range: 12 semitones upwards and downwards

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

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

Terminals

MIDI terminals: IN, OUT

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

Headphone/Output terminal: Stereo standard jack

Output Impedance: 120 Ω

Output Voltage: 4.5 V (RMS) MAX

Power supply terminal: 9 V DC

Power supply: Dual power supply system

Batteries: 6 D-size batteries

Battery life: Approximately 5 hours continuous operation on manganese batteries

AC adaptor: AD-5

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: 2.5 W + 2.5 W

Power consumption: 9 V --- 7.7 W

Dimensions (HWD): 93.1 ×37.3 ×12.0 cm (36 11/16 ×14 11/16 ×4 3/4 inches)

Weight: Approximately 5.0 kg (11.0 lbs) (without batteries)

MC-Service

— 2 —

ELECTRICAL

Current drain with 9 V DC:

No sound output 340 mA ±20 %

Maximum volume 1012 mA ±20 %

with 12 keys from C3 to B3 pressed in Square wave tone

Volume: maximum, Touch response: maximum

Reverb: Hall

Phone output level (Vrms with 8 Ωload each channel): L-ch 90 mV ±20 %

with key C6 pressed in Bassoon tone R-ch 100 mV ±20 %

Volume: maximum, Touch response: maximum

Reverb: Hall

Speaker output level (Vrms with 4 Ωload each channel): L-ch 1150 mV ±20 %

with key F5 pressed in Bassoon tone R-ch 1000 mV ±20 %

Volume: maximum, Touch response: maximum

Reverb: Hall

Output level (Vrms with 47k Ωload each channel): L-ch 1200 mV ±20 %

with key F5 pressed in Bassoon tone R-ch 1000 mV ±20 %

Volume: maximum, Touch response: maximum

Reverb: Hall

Minimum operating voltage: 6.3 V

About General MIDI

General MIDI standardizes MIDI data for all sound source types, regardless of manufacturer. General MIDI

specifies such factors as tone numbering, drum sounds, and available MIDI channels for all sound sources.

This standard makes it possible for all MIDI equipment to reproduce the same nuances when playing

General MIDI data, regardless of the manufacturer of the sound source.

This keyboard supports General MIDI, so it can be used to play commercially available pre-recorded

General MIDI data and General MIDI data send to it from a personal computer.

— 3 —

KC0 ~ KC7

FI0 ~ FI9

SI0 ~ SI9

KI0 ~ KI2

PB0 ~ PB3

P10, P13

P14, P17

Working Storage

RAM (256K-bit)

LSI4

TC55257DFL-70L(EL)

MIDI

EA0 ~

EA14

EIO0 ~

EIO7

Sound Source ROM

(16M-bit)

LSI3

UPD23C16000WGX-

C51

LRCK

BCK

D/A Converter

LSI6

UPD6379GR

Filter

Q107 ~ Q110

Main

Volume

Power Amplifier

IC101

TA8248K

Keyboard

MA0 ~ MA19

Power Supply Circuit

Q101 ~ Q105,

D106/107, D190

VCC AVDD VDD

DVDDLVDD VC

APO

Effect RAM

(256K-bit)

LSI5

TC55257DFL-

70L(EL)

MD0

MD7

Speakers

Output

MA0

MA14

MA0, MA1 LRCK, SO

BCK, SINK

LCD

LCD Driver

LSI401

SED1278F2A

SEG1 ~ SEG40

INOUT

Reset IC

IC1

RN5VD40AA

RESET

COM1 ~ COM16

DSP

LSI2

HG51B277FB-1

MD0 ~ MD15 CPU

LSI1

UPD913GF-3BA

Buttons

Assingnable Jack

PB4

VDD Power Switch

NMI

FI10

P23

PA0 ~ PA5

PB0 ~ PB3

BLOCK DIAGRAM

MC-Service

— 4 —

KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7

FI10 Drum Pad Drum Pad Pitch Bend H9 6 + Tone

31HEnter

KI0 Drum Pad Drum Pad Pitch Bend Start/ 8 3 — Rhythm

42GStop

KI1 Drum Pad Step Tempo E7 2 0 Demo

KI2 Drum Pad Memory Tempo F45 1

Transpose/

6GTune/MIDI

KC0 KC1 KC2 KC3 KC4 KC KC6 KC7

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

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

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

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

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

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

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

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

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

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

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

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

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

SI6 C6 (2) C6# (2) D6 (2) D#6 (2) E6 (2) F6 (2) F#6 (2) G6 (2)

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

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

CIRCUIT DESCRIPTION

KEY MATRIX

BUTTON MATRIX

PA0 PA1 PA2 PA3

PB0 Full Range Intro Touch Reverb

Chord Response

PB1 Fingered Normal/ Free Session Accomp

Fill-In Volume

PB2 Casio Chord Synchro/ Layer Synth

Ending

PB3 Normal Variation/ Split Mixer

Fill-In

— 5 —

Reset IC

IC1

RN5VD40AA

DSP

LSI2

HG51B277FB-1

VDD

Reset signal

To power supply circuit

VDD Battery set

RESET

VDD

POWER

From power switch NMI

APO

PLE

CPU

LSI1

UPD913GF-3BA

SCKO

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

Key

Second contact (2) First contact (1) FI

Note: Each key has two contacts,

the first conatct (1) and second contact (2).

POWER SUPPLY CIRCUIT

The power supply circuit generates five voltages as shown in the following table. VDD voltage is always

generated. The others are controlled by APO signal from the CPU.

NOMENCLATURE OF KEYS

RESET CIRCUIT

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

CPU then initializes its internal circuit, and clears the working storage RAM.

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

signal to the power supply circuit, also sends a reset signal to the DSP.

Name Voltage For operation of

VDD +5 V CPU, Reset IC, DSP, Sound source ROM, Working storage RAM, Effect RAM

DVDD +5 V LCD driver, Power jack, Sustain jack, MIDI jack

AVDD +5 V DAC, Filter

LVDD +5.6 V LCD dirver

VCC +9 V Power amplifier, Pilot lamp

MC-Service

— 6 —

CPU (LSI1: UPD913GF-3BA)

The 16-bit CPU contains a 1k-byte RAM, three 8-bit I/O ports, two timers, a key controller and serial interfaces.

The CPU detects key velocity by counting the time between first-key input signal FI and second-key SI from

the keyboard. The CPU reads sound data and velocity data from the sound source ROM in accordance with

the selected tone; the CPU can read rhythm data simultaneously when a rhythm pattern is selected. Then the

CPU provides 16-bit serial sound data to the DSP. The CPU also controls MIDI input/output and stores

sequencer data into the working storage RAM.

The following table shows the pin functions of LSI1.

Pin No. Terminal In/Out Function

1 TXD0 Out MIDI signal output

2 RXD0 In MIDI signal input

3 SCK0 Out APO (Auto Power Off) signal output

4, 5 TXD1, RXD2 In/Out Data bus for the LCD driver

6 SCK1 Out 1 MHZ synchronizing pulse output

7 AVCC In DVDD (+5 V) source

8 AN0 In AC adaptor detection terminal.

+5 V when the keyboard is powered by batteries and becomes

0 V to cancel the APO function when AC adaptor is connected.

9 AN1 — Not used. Connected to ground.

10 AGND In Ground (0 V) source

11 BCK Out Bit clock output

12 SO Out Serial sound data output

13 LRCK Out Word clock output

14 GND In Ground (0 V) source

15, 16 XLT0, XLT1 In/Out 20 MHz clock input/output

17 VCC In +5 V source

18, 19 MD0, MD1 In Mode selection terminal

20 RSTB In Reset signal input

21 NMI In Power ON signal input

22 INT/P10 In/Out Data bus for the LCD driver

23 ~ 30 FI0 ~ FI3 In Terminal for key input signal

SI0 ~ SI3

31 ~ 38 KC0 ~ KC7 Out Terminal for key scan signal

39 ~ 46 FI4 ~ FI7 In Terminal for key input signal

SI4 ~ SI7

47 ~ 50 FI8, FI9 — Not used

SI8, SI9

51 FI10 In Terminal for button input signal

52 SI10/P23 Out Chip enable signal for the LCD driver

53 ~ 55 KI0 ~ KI2 In Terminal for button input signal

56 MWNB Out Write enable signal for the DSP

57 ~ 76 MA0 ~ MA17 Out Address bus

77 MCSB0 Out Chip enable signal output for the sound source ROM

78 MCSB1 Out Not used

79 MCSB2 Out Chip enable signal output for the DSP

— 7 —

DIGITAL SIGNAL PROCESSOR (LSI2: HG51B227FB-1)

The DSP receives 16-bit serial sound data output from the CPU and adds the selected effect to the sound data

using the effect RAM. Then the DSP provides the sound data to the DAC. The DSP also controls button input/

output.

The following table shows the pin functions of LSI2.

Pin No. Terminal In/Out Function

80 VCC In +5 V source

81 GND In Ground (0 V) source

82 MRDB Out Read enable signal output for the sound source ROM

83 ~ 98 MD0 ~ MD15 In/Out Data bus

99 PLE Out Reset signal output for the DSP

100 P17 In/Out Data bus for the LCD driver

Pin No. Terminal In/Out Function

1 ~ 3, 80 PB0 ~ PB3 In Button input terminals

4 PB4 In ASSIGNABLE Jack input

5 SO Out Serial sound data output for the DAC

6 WCKO Out Word clock output for the DAC

7 VDD3 In +5 V source

8 TEST — Not used

9 RESB In Reset signal input

10 VSS2 In Ground (0 V) source

11, 12 XIN, XOUT In/Out 20 MHz clock input/output

13 WCKI In Word clock input from the CPU

14 SI In Serial sound data input from the CPU

15 BCKI In Bit clock input from the CPU

16 SINC In 1 MHz synchronizing pulse input

17 VDD2 In +5 V source

18 ~ 25 IO0 ~ IO7 In/Out Data bus

26 RCEB Out Chip enable signal output for the working storage RAM

27 VSS3 In Ground (0 V) source

28 AD1 In Address bus

29 OEB Out Output enable signal for working storage RAM

30 WEB In Write enable signal

31 VDD3 In +5 V source

32 CE2 In Chip enable signal input. High active.

33 AD0 In Address bus

34 CE1B In Chip enable signal input. Low active.

35 ~ 41, 43 EIO0 ~ EIO7 In/Out Data bus for the effect RAM

MC-Service

— 8 —

LCD DRIVER (LSI401: SED1278F2A)

The LCD driver can drive a dot matrix LCD having 40 segment and 16 common lines. The LSI contains 240

graphic symbols in the built-in character generator ROM, and stores 80 characters in the built-in display data

RAM. In accordance with command from the CPU, the LSI is capable of displaying up to 16 characters

simultaneously. The following table shows the pin functions of LSI 401.

Pin No. Terminal In/Out Function

42 , 44, 46 ~ 48, EA0 ~ EA12 Out Address bus for the effect RAM

51 ~ 59, 61

45 ECEB Out Chip enable signal output for the effect RAM

49 EOEB Out Read enable signal output for the effect RAM

50 VSS3 In Ground (0 V) source

60 EWEB Out Write enable signal output for the effect RAM

62, 66, 70, 74, 78 VSS2 In Ground source

63, 67, 71, 75, 79 VDD2 In +5 V source

64, 65, 68, 69, PA0 ~ PA5 Out Button scan signal output

72, 73

76, 77 PA6/7 Out Not used

Pin No. Terminal In/Out Function

1 ~ 22, SEG1 ~ SEG40 Out Segment signal output

63 ~ 80

23 VSS — GND (0 V) source

24, 25 OSC1, OSC2 In/Out Terminals for the built-in clock pulse generator. The external

resistor connected determines the oscillation frequency.

26 ~ 30 V1 ~ V5 In LCD drive voltage input.

Those voltages are used for generating the stepped pulse of

the LCD drive signals.

31, 32 LP, XCLS — Not used

33 VDD In DVDD (+5 V) source

34, 35 FR, DO — Not used

36 RS In Data/command determination terminal.

High: data, Low: command

37 R/W In Read/write terminal. High: read, Low: write

38 E In Chip enable signal.

High: enable, the writing is done at fall edge.

Low: disenable

39 ~ 42 DB0 ~ DB3 — Not used. Connected to GND (0 V)

43 ~ 46 DB4 ~ DB7 In/Out Data bus

47 ~ 62 COM1 ~ COM16 Out Common signal/output

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