Casio CTK-620L Manuel utilisateur

ELECTRONIC KEYBOARD

CTK-620L

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

TEMPO

SYNCHRO/ENDINGINTROVOLUMEMODE

POWER MAX

FULL RANGE

CHORD

FINGERED

CASIO CHORD

NOMAL

MIN NORMAL/FILL-IN VARIATION/FILL-IN

START/STOP

REVERB

TOUCH

RESPONSE

METRONOME

BEAT

ACCOMP

VOLUME

RHYTHMS

TONE

SONG

BANK

DEMO

SONG BANK

TONE

789

456

123

RHYTHM

TRACK 1

LEFT

STEP 1

STEP

MEMORY

SPLIT

LAYER

TRANSPOSE/

TUNE/MIDI

STEP 2 STEP 3

TRACK 2

RIGHT

3-STEP LESSON

REST

(TIE)

REVERB MUSICAL INFORMATION SYSTEM

SONG BANK CONTROLLER

KEY LIGHT

HALL

STAGE

ROOM

TOUCH

RESPONSE

KEY LIGHT

STOP PLAY/PAUSE REW FF

LAYER

SPLIT

MEMORY

STEP

100 SONG BANK

137 TONES

100 RHYTHMS

— 1 —

SPECIFICATIONS

GENERAL

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

Key light system: Can be turned on and off (up to 10 keys can be lit at the same time)

Tones: 137 (128 General MIDI tones + 9 drum tones); with layer and split

Rhythm instrument tones: 61

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/NORMARL FILL-IN, VARIATION/

VARIATION FILL-IN, SYNCHRO/ENDING

Accomp volume: 0 to 127 (128 steps)

3-step lesson: 3 lessons (step 1, 2, 3)

Playback: Repeat play of a single tune

Song bank

Number of tunes: 100

Controllers: PLAY/PAUSE, STOP, FF, REW, LEFT, RIGHT

Musical information function: Tone, AutoAccompaniment, Song Bank numbers and names; staff nota-

tion, tempo, metronome, measure and beat number, step lesson display,

chord name, dynamic mark, fingering, pedal operation

Metronome: On/Off

Beat specification: 1 to 6

Memory

Songs: 2

Recording tracks: 2

Recording methods: Real-time, step

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

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

Other functions

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

Tuning: 101 steps (A4 = approximately 440 Hz ±50 cents)

Terminals

MIDI terminals: IN, OUT

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

Headphone/output terminal: Stereo standard jack

Output Impedance: 100 Ω

Output voltage: 4.5 V (RMS) MAX

CONTENTS Page

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

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

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

Adjustment .............................................................................................................................................. 12

Major Waveforms .................................................................................................................................... 13

Printed Circuit Boards ............................................................................................................................. 14

Schematic Diagrams ............................................................................................................................... 15

Exploded View ........................................................................................................................................ 28

Parts List ................................................................................................................................................. 29

— 2 —

ELECTRICAL

Current drain with 9 V DC:

No sound output 200 mA ±20 %

Maximum volume 1090 mA ±20 %

with 10 keys from F1 to A2 pressed in French Horn

Volume: maximum, Touch response: maximum

Reverb: stage

Speaker output level (Vrms with 4 Ωload each channel):

with key C1 for R-ch, F1 for L-ch in French Horn

Volume: maximun, Touch response: maximum 2300 mV ±20 %

Reverb: stage

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

with key C1 for R-ch, F1 for L-ch in French Horn

Volume: maximun, Touch response: maximum 180 mV ±20 %

Reverb: stage

Output level (Vrms with 47 Ωload each channel):

with key C1 for R-ch, F1 for L-ch in French Horn

Volume: maximun, Touch response: maximum 2600 mV ±20 %

Reverb: stage

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.

Power jack 9 V DC

Power supply: 2-way

Batteries: Six 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): 96.1 ×39.1 ×14.4 cm (37 7/8 ×15 3/8 ×5 11/16 inches)

Weight: Approximately 6.0 kg (13.25 lbs) (without batteries)

— 3 —

BLOCK DIAGRAM

KC0 ~ KC7

FI0 ~ FI7

SI0 ~ SI7

KI0 ~ KI2

MD0 ~ 3

~ L20

L21

~ L23

MA0 ~ 2

PO10, PO17

PO22, PO23

PA4 ~ PA6

Working Storage

RAM (256K-bit)

LSI4

TC55257DFL-70L(EL)

MIDI

EA0 ~

EA14

EIO0 ~

EIO7

Sound Source ROM

(24M-bit)

LSI3

LH536PNV

LRCK

BCK

D/A Converter

LSI6

UPD6379GR-E1

Filter

Q213 ~ Q216

Main

Volume

Power Amplifier

IC201

TA8229K

Keyboard

LED

Illuminant

MA0 ~ MA19

MCSB0

MCSB0, 1

MA19

Power Supply Circuit

Q201 ~ Q208,

D206 ~ 208, D210

VCC AVDD VDD VC

DVDD VLCCLVDDLCDD

APO

L OUTR OUT

Effect RAM

(256K-bit)

LSI5

TC55257DFL-

70L(EL)

MD0

MD7

Speakers

(L)

(R)

Phones/

Output

MA0

MA14

MA0,

MA1

LRCK, SO

BCK, SINK

LCD

LCD Driver

LSI401

SED1278F0A

SEG1 ~ SEG40

INOUT

Reset IC IC1

RN5VD40AA

Chip Selector

IC2,3

RESET

COM1 ~ COM16

DSP

LSI2

HG51B277FB-1

MD0 ~ MD15

Buttons

Assingnable Jack

PB4

VDD Power Switch

NMI

LCBE

FI9

FI10

PA0, PA1

PB0 ~ PB3

LED

Driver

Q1 ~ Q11

LED

Driver

Q12 ~ Q14

CPU

LSI1

GT913F(T)

LSI7

UPD65005

GF-419

ECEB

CE1B

RACEB

RDCEB

— 4 —

CIRCUIT DESCRIPTION

KEY MATRIX

BUTTON 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) 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)

PA0 PA1

PB0 INTRO

PB1 FINGERED

PB2

PB3 NORMAL

FULL RANGE

CHORD

NORMAL

FILL-IN

VARIATION

FILL-IN CASIO

CHORD

START/

STOP

KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7

KI0 MEMORY STEP 2 3 TONE 5

KI1 STEP STEP 3 — 7 6 ACC. VOL. TIME METRO

KI2 STEP 1 0 + 4 DEMO TOUCH REVERB

FI9 2 RHYTHM 9 KEYLIGHT

FI10 SPLIT 1 SONG 8

SYNCHRO/

ENDING

LAYER TRACK 1/

RIGHT TRANSPOSE/

TUNE/MIDI

TRACK 1/

LEFT

TEMPO TEMPO

PLAY/PAUSE

FF REWIND

STOP

— 5 —

LED MATRIX

Key

Second contact (2) First contact (1) FI

Note: Each key has two contacts,

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

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

NOMENCLATURE OF KEYS

0L1L2L3L4L5L6L7L8L9L01L

12L#2A4F4B5E5A6D6G7C#6A#6G#6F

22L#2G4E4A5D5G6C6F6B#5A#6C#6D

32L2C4D4G5C5F5B6E6A#5G#5F#5D

11L21L31L41L51L61L71L81L91L02L

12L#3C#3D#3F2G3C3F#4D#4C#3A#3G

22L#2F#2D#2C2F2B3E#4F#4G#4A#5C

32L 2D2E2A3D3G3A3B4C

— 6 —

emaNegatloVfonoitareporoF

DDVV5+ ,MARtceffE,MARegarotsgnikroW,MORecruosdnuoS,PSD,CIteseR,UPC

revirdDEL

DDVDV5+UPCkcajIDIM,kcajniatsuS,

DDVAV5+retliF,CAD

DDVLV5+AG

CCVV9+reifilpmarewoP

CCLVV2+pmaltoliP

DDCLV6.5+revirdDCL

POWER SUPPLY CIRCUIT

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

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

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.

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

RSTB RESB

APO

PLE

CPU

LSI1

GT913F

SCK0

— 7 —

CPU (LSI1: GT913F)

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.

.oNniPlanimreTtuO/nInoitcnuF

10DXTtuOdesutoN

20DXRnIdesutoN

30KCStuOtuptuolangis)ffOrewoPotuA(OPA

41DXTtuOtuptuolangisIDIM

51DXRnItupnilangisIDIM

61KCStuOtuptuoeslupgnizinorhcnysZHM1

7CCVAnIecruos)V5+(DDVD

80NAnI

.lanimretnoitcetedrotpadaCA dnaseirettabybderewopsidraobyekehtnehwV5+ CAnehwnoitcnufOPAehtlecnacotV0semoceb .detcennocsirotpada

91NA— .dnuorgotdetcennoC.desutoN

01DNGAnIecruos)V0(dnuorG

11KCBtuOtuptuokcolctiB

21OStuOtuptuoataddnuoslaireS

31KCRLtuOtuptuokcolcdroW

41DNGnIecruos)V0(dnuorG

61,511TLX,0TLXtuO/nItuptuo/tupnikcolczHM03

71CCVnIecruosV5+

91,811DM,0DMnIlanimretnoitcelesedoM

02BTSRnItupnilangisteseR

12IMNnItupnilangisNOrewoP

2201P/TNItuO/nIrevirdDCLehtrofsubataD

03~32

3IF~0IF

3IS~0IS

nIlangistupniyekroflanimreT

83~137CK~0CKtuOlangisnacsyekroflanimreT

64~93

7IF~4IF

7IS~4IS

nIlangistupniyekroflanimreT

84,748IS,8IF—desutoN

949IFnIlangistupninottubroflanimreT

059ISnIrevirdDCLrofsubataD

1501IFnIlangistupninottubroflanimreT

2532P/01IStuOrevirdDCLehtrofsubataD

55~352IK~0IKnIlangistupninottubroflanimreT

65BNWMtuOPSDehtroflangiselbaneetirW

— 8 —

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 and GA.

The following table shows the pin functions of LSI2.

.oNniPlanimreTtuO/nInoitcnuF

67~7591AM~0AMtuOsubsserddA

87,771BSCM,0BSCMtuO ,MORecruosdnuosehtroftuptuolangiselbanepihC

PSDdnaMARgnikrow

972BSCMtuOdesutoN

08CCVnIecruosV5+

18DNGnIecruos)V0(dnuorG

28BDRMtuOMORecruosdnuosehtroftuptuolangiselbanedaeR

89~3851DM~0DMtuO/nIsubataD

99ELPtuOPSDehtroftuptuolangisteseR

00171PtuO/nIrevirdDCLehtrofsubataD

.oNniPlanimreTtuO/nI noitcnuF

08,3~13BP~0BPnIslanimrettupninottuB

44BPnItupnikcaJELBANGISSA

5OStuOCADehtroftuptuoataddnuoslaireS

6OKCWtuOCADehtroftuptuokcolcdroW

73DDVnIecruosV5+

8TSET—desutoN

9BSERnItupnilangisteseR

012SSVnIecruos)V0(dnuorG

21,11TUOX,NIXtuO/nItuptuo/tupnikcolczHM02

31IKCWnIUPCehtmorftupnikcolcdroW

41ISnIUPCehtmorftupniataddnuoslaireS

51IKCBnIUPCehtmorftupnikcolctiB

61CNISnItupnieslupgnizinorhcnyszHM1

712DDVnIecruosV5+

52~817OI~0OItuO/nIsubataD

62BECRtuOAGehtroftuptuolangiselbanepihC

723SSVnIecruos)V0(dnuorG

821DAnIsubsserddA

92BEOtuOMARegarotsgnikrowroflangiselbanetuptuO

03BEWnIMARegartsgnikrowroflangiselbaneetirW

133DDVnIecruosV5+

232ECnI.evitcahgiH.tupnilangiselbanepihC

330DAnIsubsserddA

— 9 —

LCD DRIVER (LSI401: SED1278F0A)

The LCD driver can drive a dot matrix LCD having 40 segment and 15 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

1 ~ 22,

63 ~ 80

23 VSS — GND (0 V) source

Terminals for the built-in clock pulse generator.The external

resistor connected determines the oscillation requency.

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

Data/command determination terminal.

High: data, Low: command

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

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 ~ 53, COM1 ~ COM7

55 ~ 62 COM9 ~ COM16

54 COM8 — Not used

SEG1 ~ SEG40 Out Segment signal output

24, 25 OSC1, OSC2 In/Out

26 ~ 30 V1 ~ V5 In

36 RS In

Out Common signal/output

38 E In

Pin No. Terminal In/Out Function

34 CE1B In Chip enable signal input. Low active.

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

EA0 ~ EA14 Out Address bus for the effect RAM

45 ECEB Out Chip enable signal output for the effect RAM

49 EOEB Out Output enable signal for the effect RAM

50 VSS3 In Ground (0 V) source

60 BWEB 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 PA0, PA1 Out Button scan signal output

68, 69, 77 PA2, PA3, PA7 — Not used

72 PA4 Out Data/command signal for LCD driver

73 PA5 Out Read/write signal for LCD driver

76 PA6 Out Chip enable signal for LCD driver

42 , 44, 46 ~ 48,

51 ~ 59, 61

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