Casio CTK-691 User Manual

CTK-691

INDEX

JUN. 2003

CTK-691

ELECTRONIC KEYBOARD

Ver.2 : Sep. 2006

Page

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

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

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

Printed Circuit Boards ............................................................................................................................... 5

Disassembly .............................................................................................................................................. 8

Diagnostic Program................................................................................................................................. 14

Schematic Diagrams ............................................................................................................................... 17

Exploded View ........................................................................................................................................ 22

Parts List ................................................................................................................................................. 23

SPECIFICATIONS

GENERAL

Keyboard: 61 standard-size keys, 5 octaves with touch response (Off / 1 / 2 / 3) Tones: 300 Advanced Tones + 200 Preset Tones + 16 Drum Sets + 100 standard

user tones + 20 user tones with waves*: + 4 drum sets with waves* + 50 drawbar organ tones + 100 user drawbar organ tones (790 tones total);

layer/split Rhythm Instrument Tones: 61 Polyphony: 32 notes maximum (10 for certain tones) Effects: DSP (200 types: internal, 100 user areas) + Reverb (16 types) + Chorus (16

types) + Equalizer (10 types, 4 bands) Auto Accompaniment

Rhythm Patterns: 156 (internal, 16 user areas*) Tempo: Variable (226 steps, = 30 to 255) Chords: 3 fingering methods (CASIO CHORD, FINGERED, FULL RANGE CHORD) Rhythm Controller: START/STOP, INTRO/ENDING 1 and 2, VARIATION/FILL-IN 1 and 2,

SYNCHRO/FILL-IN NEXT

Accomp Volume: 0 to 127 (128 steps) One Touch Presets: Recalls settings for tone, tempo, layer on/off, and harmonize on/off in

accordance with rhythm.

Auto Harmonize: 10 types: Automatic addition of notes that harmonize with melody note in

accordance with specified Auto Accompaniment chords. Memory Function

Songs: 5 Recording Tracks: 6 (2 through 6 are melody tracks) Recording Methods: Real-time, step Memory Capacity: Approximately 10,000 notes (total for 5 songs) Edit Function: Equipped

Demo Tunes: 3

Tune Number

0 1 2

Synthesizer Function

Parameters: Attack time; release time; resonance; cutoff frequency; vibrato type; vibrato

delay; vibrato depth; vibrato rate; octave shift; level; touch sense; reverb

send; chorus send; DSP line; DSP type and DSP parameter, DSP level. Registration Memory

Number of Setups: 32 (4 setups × 8 banks) Memory Contents: Tone, Rhythm, Tempo, Layer on/off, Split on/off, Split point, Harmonize on/

off, Mixer settings (Channels 1 to 10), Effect settings, Touch Response

settings, Assignable jack setting, Transpose, Tuning, Accompaniment

volume setting, Auto Harmonize type, MODE button setting, Synchro

standby state, Mixer Hold, DSP Hold, Synthesizer Mode parameters Mixer Function

Channels: 16 Parameters: Tone; part on/off; volume; pan pot; octave shift; coarse tune; fine tune;

reverb send; chorus send; DSP line; DSP level; DSP pan; DSP system

reverb send; DSP system chorus send

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

Name

Nora Park

Garage Flava

Strut With Beauty

Composer

TECH-NOTE INTERNATIONAL LTD.

Steave Turner

Edward Alstrom

Play time

2:06 2:15 1:52

— 1 —

Other Functions

Transpose: 49 steps (–24 semitones to +24 semitones) Tuning: Variable (A4 = approximately 440Hz ±100 cents) LCD: Adjustable contrast

SMF Player Flash memory storage for up to 200 files*

• Supported Format: SMF0

Flash Memory Capacity: 2MB

Shared Area: Approximately 1.5MB (waveform data, accompaniment data,

SMF data)

• Further storage of waveform, accompaniment, and SMF data becomes impossible after the total of such data reaches approximately 1.5MB.

Terminals

MIDI Terminals: IN, OUT Sustain/Assignable Terminal:Standard jack (sustain, sostenuto, soft, rhythm start/stop) Headphone/Output Terminal: Stereo standard jack

Output Impedance: 140Ω Output Voltage: 4.5V (RMS) MAX

Power Supply Terminal: 9V DC

Power Supply: Dual power supply system

Batteries: 6 D-size batteries Battery Life: Approximately 4 hours continuous operation on manganese batteries AC Adaptor: AD-5 Auto Power Off: Turns power off approximately six minutes after last key operation. Enabled

under battery power only, can be disabled manually. Speaker Output: 3W + 3W Power consumption: 9V Dimensions: 96.0 × 37.5 × 14.6 cm (37 13/16 × 14 3/4 × 5 3/4 inch) Weight: Approximately 5.6 kg (12.3lbs) (without batteries)

7.7W

* The same memory area is used to store waveform data, accompaniment data, and SMF data.

ELECTRICAL

Current drain with 9 V DC: No sound output 1200 mA ± 20 % Maximum volume 260 mA ± 20 %

with 16 keys from C1 to D#2 pressed in 193 BREATHY ALTO SAX (R channel) Volume: maximum, Velocity: maximum

Speaker output level (Vrms with 4 Ω load each channel):

with key G1 in 193 BREATHY ALTO SAX (R channel) Volume: maximun, Velocity: maximum L/R: 3700 mV ± 20 %

Phone output level (Vrms with 32 Ω load each channel):

with key, E1 in 193 BREATHY ALTO SAX (R channel) Volume: maximun, Velocity: maximum L/R: 320 mV ± 20 %

Output level (Vrms with 47 Ω load each channel):

with key E1 in 193 BREATHY ALTO SAX (R channel) Volume: maximun, Velocity: maximum L/R: 1750 mV ± 20 %

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.

— 2 —

BLOCK DIAGRAM

MIDI

RAM (1Mbit)

IC2

CY62128VLL-70AZI

PEDAL

Assingnable Jack

Reset IC

IC4

R1151N001C-TR

RESET

16.384MHz

EA0 ~ EA19

ED12 ~ ED19

MA0 ~ MA20

MD0 ~ MD15

Q207

D209

Filter

IC202, IC203

DAC IC3

µPD6379LGR-E1

Main

Volume

Power Amplifier

IC201

LA4636

Power Supply Circuit

Q201 ~ Q206, D201,

D204, D205, D207, D208

(9V)

(5V)

VD5

(5V)

VA5

(9V)

VCP

APO

ADIN

Battery

APO Cancellation

Speakers

(L)

(R)

Phones/Output

LOUT

CONT

ROUT

AC Adaptor

DC 9V

Keyboard

Buttons

FLASH ROM (16MBit)

IC5

LH28F160BJHE-BTL90

RAM (1Mbit)

IC12

CY62128VLL-70AZI

ROM (64Mbit)

IC8

MR27V6402G01BTNZ04

MA0 ~ MA21

MD0 ~ MD15

MA0 ~ MA15, MA25

MA0 ~ MA23, MA25

MD0 ~ MD7

MA1 ~ MA3

MD0 ~ MD15

CPU

IC10

uPD914AGM-3ED

KEY/BOTTON

CONTROLLER

IC13

TC190C020AF-001

KC0 ~ KC7

SI0 ~ SI7

FI0 ~ FI7

FI8 ~ FI10, FI0 ~ FI7, KI0 ~ KI2,

LD14 ~ LD16, LD20 ~ LD22

LCD Controller

ML9040-B02GA (IC501)

OUT

D203

MA0 ~ MA20

— 3 —

KEY MATRIX

KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7-

CIRCUIT DESCRIPTION

FI0 SI0 FI1 SI1 FI2 SI2 FI3 SI3 FI4 SI4 FI5 SI5 FI6 SI6 FI7 SI7

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

C2 (2) C#2 (2) D2 (2) D#2 (2) E2 (2) F2 (2) F#2 (2) G2 (2) G#2 (1) A2 (1) A#2 (1) B2 (1) C3 (1) C#3 (1) D3 (1) D#3 (1) G#2 (2) A2 (2) A#2 (2) B2 (2) C3 (2) C#3 (2) D3 (2) D#3 (2)

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

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

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

C4 (2) C#4 (2) D4 (2) D#4 (2) E4 (2) F4 (2) F#4 (2) G4 (2) G#4 (1) A4 (1) A#4 (1) B4 (1) C5 (1) C#5 (1) D5 (1) D#5 (1) G#4 (2) A4 (2) A#4 (2) B4 (2) C5 (2) C#5 (2) D5 (2) D#5 (2)

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

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

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

C6 (2) C#6 (2) D6 (2) D#6 (2) E6 (2) F6 (2) F#6 (2) G6 (2) G#6 (1) A6 (1) A#6 (1) B6 (1) C7 (1) G#6 (2) A6 (2) A#6 (2) B6 (2) C7 (2)

BUTTON MATRIX

KI0

KI1

KI2

FI8

FI9

FI10

KC0

LAYER

DEMO

KC1

—

KC2

DSP ON/OFF

PIANO SETTING

RHYTHM

CURSOR⇐

CURSOR⇑

TONE

CURSOR⇓

CURSOR⇒

DRAWBAR

KC3

EXIT

KC4

PART EDIT

TONE EDIT

SETTING

TEMPO UP

BANK

EFFECT EDIT

KC5

SEQ

ACCOMP VOLUME

ONE TOUCH PRESET

REGISTRATION 1

TEMPO DOWN

SMF PLAY

INTRO/ENDING 2

INTRO/ENDING 1

AUTO HARMONIZE

START/STOP

KC6

STORE

SPLIT

KC7

SYNCRO/FILL-IN NEXT

VARIATION/FILL-IN 2

VARIATION/FILL-IN 1

REGISTRATION 4

REGISTRATION 3

REGISTRATION 2

— 4 —

Main PCB M705-MA1M

PRINTED CIRCUIT BOARDS

Top View

Bottom View

— 5 —

Sub PCB M705-MA2M

LCD PCB M705-LCD1M

Top View

— 6 —

CONSOLE PCB M705-CN1M

CONSOLE PCB M705-CN2M

Top View

CONSOLE PCB M705-CN4MCONSOLE PCB M705-CN3M

Top View

— 7 —

+ 19 hidden pages

Casio CTK-691 User Manual

CTK-691

CONTENTS

SPECIFICATIONS

BLOCK DIAGRAM

CIRCUIT DESCRIPTION

PRINTED CIRCUIT BOARDS