Casio CTK-811 User Manual

CTK-811EX

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INDEX

JUL.1998

MODULATION

PITCH BEND

110 RHYTHMS

DSP

USER RHYTHM
100

‘

109

2-WAY

BASS REFLEX SPEAKER

POWER MODE

RECORD

NORMAL/

INTRO

FILL-IN

SEQUENCER

FULL RANGE
CHORD

FINGERED

CASIO CHORD

SONG

VARIATION/

FILL-IN

CONTRAST

VOLUME

FREE

MAX

SESSION

ONE TOUCH

PRESET

MIN

EXTERNAL CH1

CH2

CH3

CH4

PATTERN

INTERNAL

MIXER SELECT TONE EXPANDER ACCOMP SEQUENCER TRACK

TEMPO

SYNCHRO/

START/

ENDING

STOP

CH5

UPPER1

UPPER2

LOWER1

LOWER2

ACC VOL.

BANK A B C D E STORE

CH6

CHORD1

16 CHANNEL MIXER

CH7

CHORD2

CH8

CHORD3

REGISTRATION

CH9

CH10

BASS

RHYTHN

GM SOUND KEYBOARD

232 TONES

TONE

RHYTHM

LAYER/

AUTO HARMONIZE

SPLIT

CH11

CH12

CH13

CH14

CH15

CH16

TR6

TR1

TR2

TR3

TR4

TR5

DEMO

ENVELOPE

PITCH

7

8

4

5

1

2

/NO /YES

0

DELETE

CURSOR

ENVELOPE

9

00 FLAT

SYNTH

TRANSPOSE/

6

TUNE/MIDI

01-17 VIBRATO

TOUCH

RESPONSE

3

18-45 OTHERS

DISK

MAIN MENU/

:
CHANNEL VOLUME
SUB MENU/

:
CHANNEL SELECT

ENTER

2-WAY

BASS REFLEX SPEAKER

10DSP

PARAMETER RESET

ENTER
AMP
ENVELOPE

DECAY

SUSTAIN

CTK-811

CONTENTS

Safety Notice ----------------------------------------------------------------------------------------------- 2
Specifications ---------------------------------------------------------------------------------------------- 3
Important Operation ------------------------------------------------------------------------------------- 5
Block Diagram --------------------------------------------------------------------------------------------- 6
Circuit Description --------------------------------------------------------------------------------------- 7
Diagnostic Program------------------------------------------------------------------------------------ 22
Major Waveformes-------------------------------------------------------------------------------------- 28
Printed Circuit Board ---------------------------------------------------------------------------------- 29
Exploded View ------------------------------------------------------------------------------------------- 31
Parts List--------------------------------------------------------------------------------------------------- 32
Schematic Diagrams----------------------------------------------------------------------------------- 35

— 1 —

DENMARK:

SAFETY NOTICE

CAUTION!
Danger of explosion if battery is incorrectly replaced. Replace
only with the same or equivalent type.

ADVARSE!
Lithiumbatteri. Eksplosionsfare ved fejlagtig handtering.
Udskiftning ma kun ske med batteri af samme fabrikat og type.
Lever det brugte batteri tilbage tili leverandoren.

FINLAND:

SWEDEN:

VAROITUS
Paristo voiäjähtää, jos se on virheellisesti asennettu. Vaihda
paristo ainoastaan valmistajan suosittelemaan tyyppiin. Hävitä
käytetty paristo valmistajan ohjeiden mukaisesti.

VARNING
Felaktigt batteribyte kan medf fara för explosion. Använd där­för endast samma typ eller likvärdig typ enligt apparat­tillverkarens rekommendation.
Kassera förbrukade batterier enligt tillverkarens anvisning.

— 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: 5 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: 109.2 × 42.7 × 15.7 cm (43 1/16 × 16 13/16 × 6 3/16 inch)
Weight (without batteries): Approximately 9.2 kg (20.3 lbs)
Standard accessories: Music Stand; Pattern Conversion Disk; Data Disk; Disk User’s Guide;

Keyboard User’s Guide

ELECTRICAL

Current drain with 12 V DC:

No sound output 440 mA ± 20 %
Maximum volume 2000 mA ± 20 %

with 10 keys from C3 to E4 pressed in whistle tone
Volume: MAX., Velocity: MAX.
DSP0: Reverb1, FDD: Replay

Phone output level (Vrms with 8 Ω load each channel):

with tone Synth-Bass 4 tone L-ch (Key C4) 100 mV ± 20 %
Volume: MAX., Velocity: MAX. R-ch (Key F3) 92 mV ± 20 %
DSP0: Reverb1

Speaker output level (Vrms with 8 Ω load each channel):

with tone Synth-Bass 4 tone L-ch (Key D3) 7.1 mV ± 20 %
Volume: MAX., Velocity: MAX. R-ch (Key F3) 6.2 mV ± 20 %
DSP0: Reverb1

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

with tone Synth-Bass 4 tone L-ch (Key C4) 3200 mV ± 20 %
Volume: MAX., Velocity: MAX. R-ch (Key F3) 3100 mV ± 20 %
DSP0: Reverb1

Minimum operating voltage: 6.1 V

— 4 —

IMPORTANT OPERATION

Full Initialization

Use this procedure to return all keyboard settings to what they were when you purchased it. Note that this
procedure clears all data from memory.

• While holding down the ENTER button, turn on keyboard power.

Res

• Press YES to initialize the keyboard or NO to turn on power without changing any settings.

Parameter Initialization

Use this procedure to return all keyboard settings to what they were when you purchased it. Note that this
procedure does not affect user tones, user rhythms, registration memory contents, and display contrast
settings.

• While keyboard power is on, press the [+], [–], and ENTER buttons at the same time.

Adjusting Display Contrast

• Display contrast can be adjust to one of 100 levels for easy viewing.

• Adjusting display contrast helps to make figures easier to read from any viewing angle.

• Within five seconds after pressing the CONTRAST button, press [+] to increase the contrast value (mak­ing the display darker) or [–] to decrease it (making the display lighter).

• After you release CONTRAST, the message “Contrast” remains on the display for a few moments, during
which you can change the contrast setting further using [+] and [–] or by inputting a contrast value with the
number keys.
The contrast can be set to a value from 0 to 99. The initial default setting is 50.

et?

GM (General MIDI):

General MIDI standardizes MIDI data to play music with same nuance between different MIDI instruments.
Among GM conformed MIDI instruments, or commercially available musical data, music can be played with
similar tones.

SMF (Standard MIDI File):

SMF is a standard file format for MIDI instruments and computer music software. SMF formatted data can
be played and transported easily among SMF complied instruments or musical data of different manufac­turers.

— 5 —

BLOCK DIAGRAM

ROM1

MSM27C802CZ-465

LSI2 (8Mbit)

MSM23C3210MC

-12CA89
LSI3 (32Mbit)

RA0 ~ RA20

RD0 ~ RD15

Working

RAM

TC55257

GFL-70L

LSI5

(256Kbit)

ROM2

EA0 ~ EA14

ED0 ~ ED8

ECEB, EOEB
EWEB

Key Board

SI0 ~
SI7
FI0 ~
FI7

KC0

~

KC7

Key Controller

TC190C020AF-001

LSI10

RD, HWR,

LWR

DSP

HG51B155FD

LSI4

WOK1

SOLP

BOK

D/A Converter

µPD6376GS

LSI1

RESB

A1 ~ A4

D0 ~ D15

RESB

A0 ~ A3

D8 ~ D15 RESET

RD,
HWR

IN

MIDI

LCD Driver

OUT

SED1278F2A

PBO

HD6473042F16-465

D0

~

D7

RAM1

TC551001BFL-70L

LSI7 (1Mbit)

S1

SEG1 ~ SEG40

LSI501

COM1 ~ COM16

DB4

~DB7

CONT,

LEDCK, LEDCL

LRS,

LR/W

LE

CPU

LSDT
SWCK

LSI9

NMI

1RD, 1HWR, 1LWR

A0 ~ A15

D0 ~ D15

D8

VBR VBR

~

D15

RAM2

TC551001BFL-70L

LSI8 (1Mbit)

LWR, RD S1 HWR, RD

LCD

Back Light

S-Register

TC74HC164

LEDA ~ LEDF

IC301

S-Register

TC74HC164

KC0 ~ KC8

IC302

KI0 ~ KI7

TEND, DREQ, CS2, CS3, B1-5

Chip Selector

TC74HC08

IC4

LWR

HWR
RD

RD, HWR,

Back Light Driver

NT-07

Q501, Q502

LEDs

Buttons

VDD

D8

~

D15

FDD Controller

HD63266F

Out put

LPF

(L)

LPF

(R)

Main

Volume

Power Amp.

LA4620

IC201

(L) (R)

Speakers

Reset IC

RN5VD40A

— 6 —

IC3

IC1

Power Supply Circuit

Q205,

Q206

IC204, Q203
Q204, Q208, Q210

LSI6

RESET

AVDDDVDDFVDDCVDDVCCVDDVC

VDD

VBR

Back up

Power

3.5" FDD Unit

DF354HO64A

CR2032

APO

CIRCUIT DESCRIPTION

KEY MATRIX

KC0 KC1 KC2 KC3 KC4 KC5 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 A#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 C#6 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

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

Key

Second contact 2

First contact 1

NOMENCLATURE OF KEYS

C#2

C2 D2E2F2G2A2 B2 C3 D3

F#2D#2

C#3A#2G#2

F#3 G#3

D#3

E3

F3 G3 A3 B3 C4 D4 E4 F4 G4 A4 B4 C5 D5 E5 F5 G5 A5 B5

A#3 C#4 D#4

F#4 G#4

A#4

C#5

D#5

F#5 G#5

FI

KC

SI

A#5

G#6F#6D#6

C#6

C6

A#6

B6A6G6F6E6D6

C7

— 7 —

BUTTON MATRIX

KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7

KC0 MODE INTRO CH8 A CH16 SPLIT

KC1 RECORD CH1 CH9 B E 2

KC2 SONG CH2 CH10 C H RHYTHM 5

KC3 PATTERN CH3 CH11 D ENTER TONE 8

KC4 DSP CH4 CH12 E DISK 0

KC5 CH5 CH13 STORE 1 3

KC6 CH6 CH14 G 4 6

KC7 BANK CH7 CH15 F SYNTH 7 9

DMSW DEMO

CON-

TRAST

FREE

SESSION

ONE TOUCH

PRESET

NORMAL/

FILL-IN

V ARIATION/

FILL-IN

SYNCHRO/

ENDING
ST AR T/

STOP

TEMPO

G

TEMPO

H

MIXER

SELECT

LA YER/

AUTO HARMO

TOUCH

RESPONSE

TRANS-

POSE

H/NO

—

G/YES

+

LED MATRIX

LED-A

FULL RANGE

CHORD

LED-B

FINGERD

LED-C

CASIO CHORD

LED-D

FREE

SESSION

LED-E

SYNTH

LED-F

DISK

— 8 —

MEMORY DEVICES

Each memory device has the following data.

CPU

Internal Memory

3

ROM

512 kbit

4

RAM

16 kbit

LSI9

DSP

LSI4

Working RAM

7

256 kbit

LSI5

RAM1

1

1 Mbit

LSI7

RAM2

2

1 Mbit

LSI8

ROM1

5

8 Mbit

LSI2

ROM2

6

32 Mbit

LSI3

1 RAM1 :

S-RAM for operation program, Register, Pattern, Song
and SMF data from FDD. (Lower part of data bus)

2 RAM2 :

S-RAM for operation program, Register, Pattern, Song
and SMF data from FDD. (Upper part of data bus)

3 Internal ROM of CPU :

Main program data for system operation

4 Internal RAM of CPU :

Work area for system operation

5 ROM1 :

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

6 ROM2 :

Sound Waveforms/Tone data Digital sound effect

7 Working RAM :

Work area for DSP

RESET CIRCUIT

VDD

From power switch

Battery set

RESET

PWSW

VDD

RES

CPU

HD6473042F16-465

LSI9

NMI

PB0

PA7

RESET

APO

FDD Controller

HD63266F

LSI6

RESET

PW/SW ON

RESET

APO
DVDD

(5V)

Power Supply

Circuit

DVDD

HG51B155FD

Key Controller

TC190C020AF-001

DVDD

DVDD
DSP
LSI4

RESB

DVDD

RESB

LSI10

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.

— 9 —

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.

PW/ON

NMI

From
Batteries or
AC Adaptor

+9V ~ +12 V

Switching

Transistors

APO

(To back light)

LC Filter

HD6473042F16-465

APO

PA7

LC Filter

CPU

LSI9

NMI

PW/SW

(To LCD)
(To FDD)
(To digital)
(To analog)

Regulator IC

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.

— 10 —

DSP and DAC CIRCUIT

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

ROM1

MSM27CB02CZ-465

MX23C3210MC-12CA89

LSI2 (8Mbit)

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

RA23

RA0 ~

RA22

RA18

ROM2

LSI3 (32Mbit)

RA0 ~
RA20

RD0 ~ RD15

RA0 ~ RA20

DSP

HG51B155FD

LSI4

ED0 ~
ED15

D0 ~ D15

LSI5

key
data

D8 ~
D15

PG

24.576 MHz

Control
data

WE

OE

CS

Working RAM (256K-bit)

TC55257DFL-70L

EA0 ~
EA14

A0 ~ A14

SOLP: Sound data
BOK: Bit clock
WOK1: Word clock

DAC

SOLP

BOK

WOK1

SI

CLK

LRCK

UPD6376GS

ROUT

LOUT

CPU

HD6473042F16-465

LSI9

— 11 —

D0 ~
D15

key
data

Key Controller

TC190C020AF-001

LSI10

KC0 ~
KC7

SI0 ~ SI7
FI0 ~ FI7

Key
board

FDD UNIT (DF354H064A)

FDD Specifications:

1 Memory Capacity (under un-format) : 1.6 MByte
2 Density of track : 5.33 track/mm (135 TPI)
3 Number of track : 77 track/side
4 Number of head : 2
5 Rate of data transfer : 500 kbps
6 Access time (between two tracks) : 3 m seconds
7 Compensation of writing data : 125 n second (all tracks)
8 Rotation speed : 360 Min-1 (rpm) ± 1.5 %

FDD Interface:

Host system Drive

CN2 connector

Drive Select 1 12

Density Select4

Index8

Motor ON 16
Direction 18
Step 20
Write Data 22
Write Gate 24

Side 1 Select 32

DC.GND

+5 V

N.C 4

System Frame GND.

Track 0026

Write Protect28

Read Data30

Disk Change34

GND Pin Numbers of CN2:
1, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33

Non connected Pin Numbers of CN2:
2, 6, 10, 14 (Pin #3 is removed to prevent erroneous insertion)

CN1 connector

1

+5 V Return2
+5 V Return3

0 Ω

Signal GND

— 12 —

Drive Frame GND.