Casio CTK-511 User Manual

CTK-511

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INDEX

CTK-511

ELECTRONIC KEYBOARD

CONTENTS

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

Block Diagram.................................................................................................................................. 2

Circuit Description............................................................................................................................ 3

Adjustment ....................................................................................................................................... 7

Major Waveforms ............................................................................................................................. 8

Printed Circuit Boards ...................................................................................................................... 9

Schematic Diagrams ...................................................................................................................... 10

Exploded View ............................................................................................................................... 15

Parts List ........................................................................................................................................ 16

SPECIFICATIONS

GENERAL

Keyboard: 61 standard-size keys, 5 octaves Tones: 100 Polyphony: 12 notes maximum (6 for certain tones) Auto accompaniment

Rhythm patterns: 100 Tempo: Variable (236 steps, = 20 to 255) Chords: 2 fingering methods (CASIO CHORD, FINGERED) Rhythm controller: START/STOP, SYNCHRO/FILL-IN Accomp volume: 0 to 9 (10 steps)

Song bank

Tunes: 100 Controllers: PLAY/PAUSE, STOP, REW, FF, LEFT ON/OFF (ACCOMP), RIGHT ON/

OFF (MELODY)

Display

Name display: TONE, RHYTHM, SONG BANK name/number, keyboard settings name/value Tempo: Tempo value, metronome, synchro standby, beat indicator Chord: Chord name, Chord form Fingering: Fingering indicators, parts, pedal Song bank status: PLAY, PAUSE, REW, FF Staff: 5 octaves with sharp and flat indications

Keyboard: 5 octaves MIDI: 5 multi-timbre receive Other functions

Transpose: 12 steps (–6 semitones to +5 semitones)

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

Volume: 0 to 9 (10 steps) Terminals

MIDI terminals: IN, OUT

Sustain terminal: Standard jack

Phones/Output terminal: Stereo standard jack

Output Impedance: 78 Ω Output Voltage: 4 V (RMS) MAX

Power supply terminal: 9 V DC Power supply Dual power supply system

Batteries: 6 D-size batteries

Battery life: Approximately 8 hours 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: 2.0 W + 2.0 W Power consumption: 9 V --- 7.7 W Dimensions (HWD): 961 × 381 × 139 mm (37-7/8 × 15-1/16 × 5-1/2 inches) Weight: Approximately 5.4 kg (11.91 lbs) (without batteries)

ELECTRICAL

Current drain with 9 V DC:

No sound output 250 mA ± 20% Maximum volume 830 mA ± 20%

with 12 keys C1 to B1 pressed in Synth-Lead 1 Volume: Maximum

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

with key G2 pressed in Synth-Lead 1 78 mV ± 20%

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

with key G1 pressed in Synth-Lead 1 1250 mV ± 20%

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

with key B1 pressed in Synth-Lead 1 1050 mV ± 20%

Minimum operating voltage: 6.0 V

— 1 —

— 2 —

CPU

MSM 6755B-17

LSI2

Keyboard

Buttons

LCD

LCD Driver

SED1278F2A

LSI3

Reset IC

RN5VD40A

IC1

Oscillator

X1, Q1

Power Supply Circuit

Q201 ~ Q203, Q207, Q208, D205

Power Amp.

TA8248K

IC201

Filter (L)

Q206

Filter (R)

Q205

Phone/Output

VC VCC DVDD

AVDD

APO

DC + 9V IN

DB4 ~ DB7

MIDI IN MIDI OUT

COM1 ~ COM16

SEG1 ~ SEG40

RS R/W E

KO8 ~ KO12

KI0 ~ KI6

KO0 ~ KO7

MD0 ~ MD7

MA0 ~ MA18

ROM(2M-bit)

LC372100PM-

G48

LSI1

Power Switch

BLOCK DIAGRAM

CIRCUIT DESCRIPTION

KEY MATRIX

KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7

KO0 C2 G#2 E3 C4 G#4 E5 C6 G#6

KO1 C#2 A2 F3 C#4 A4 F5 C#6 A6

KO2 D2 A#2 F#3 D4 A#4 F#5 D6 A#6

KO3 D#2 B2 G3 D#4 B4 G5 D#6 B6

KO4 E2 C3 G#3 E4 C5 G#5 E6 C7

KO5 F2 C#3 A3 F4 C#5 A5 F6

KO6 F#2 D3 A#3 F#4 D5 A#5 F#6

KO7 G2 D#3 B3 G4 D#5 B5 G6

KO8 —+0

KO9 321

KO10 6 5 4 Rhythm Tone

Tempo

Down

Start/

Stop

Transpose/

Tune/MIDI

KO11 9 8 7 Fingered Normal Off

KO12 FF Right Stop Left REW

Play/

Pause

Tempo

Up

Synchro/

Fill-In

Song Bank

CASIO

Chord

Volume

Down

Chord

Book

Volume

Accomp

Volume

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

A#5

C#6

C6

Up

G#6F#6D#6

A#6

B6A6G6F6E6D6

C7

— 3 —

CPU (LSI2: MSM6755B-17)

The CPU reads sound data from the ROM in accordance with the pressed key and the selected tone; the CPU can read rhythm data simultaneously when a rhythm pattern is selected. Then it provides the left and the right channels’ waveforms separately, by converting the data into the waveforms with two built-in DACs. The CPU also controls key and button input. The following table shows the pin functions of LSI2.

Pin No. Terminal In/Out Function

1 MA14 Out Address bus

2, 3 NCO — Not used

4 ~ 19 MA0 ~ MA13 Out Address bus

13 MRDB Out Read enable signal 17 MCSB — Not used

20 ~ 27 MD0 ~ MD7 In/Out Data bus

28, 29 NC1, NC2 — Not used

30 DGND In Ground (0 V) source 31 DVCC In +5 V source

32, 33 XTLO, XTLI In/Out 20 MHz clock input/output

34 NC3 — Not used 35 RSTB In Reset signal input 36 P24/RXD In MIDI signal input 37 P25/TXD Out MIDI signal output 38 NMI In Power ON signal input. Connected to +5 V. 39 APO Out APO (Auto Power Off) signal output 40 NC4 — Not used 41 REFH Out Terminal for the internal DAC

42, 43 NC5, NC6 — Not used

44 DAOR Out Right channel sound waveform output 45 NC7 — Not used 46 AVdac In +5 V source for the internal DAC 47 DAOL Out Left channel sound waveform output 48 REFL Out Terminal for the internal DAC and ADC 49 AGdac In Ground source for internal DAC 50 AGadc In Ground source for internal ADC 51 ANI In APO cancellation signal 52 AVadc In +5 V source for the internal ADC 53 NC8 — Not used 54 MOD0 In Mode selection terminal. Connected to +5 V.

55, 56 MOD1, MOD2 In Mode selection terminal. Connected to ground.

57 P40 In Pedal signal input

58 ~ 64 KI0/P30 ~ KI7/P36 In Terminals for key/button input signal

65 KI7/P37 — Not used

66 ~ 73 KO0/P50 ~ KO7/P57 Out Terminals for key scan signal

— 4 —

Pin No. Terminal In/Out Function

74 ~ 77 DB4 ~ DB7 Out Data bus for the LCD driver

78 NC9 — Not used

79 LVCC In +5 V source 80 ~ 84 KO8 ~ KO12 Out Terminals for button scan signal 85 ~ 87 P65 ~ P67 — Not used

88 RS Out Control signal for the LCD driver

89 R/W Out Read/Write signal for the LCD driver

90 E Out Chip enable signal for the LCD driver 91 ~ 95 P73 ~ P77 — Not used

96 LGND In Ground source 97, 100 MA18, MA15 Out Address bus

LCD DRIVER (LSI3: 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 LSI3.

Pin No. Terminal In/Out Function

1 ~ 22,

63 ~ 80

23 VSS — GND (0 V) source

24, 25 OSC1, OSC2 In/Out

26 ~ 30 V1 ~ V5 In Those voltages are used for generating the stepped pulse of

31, 32 LP, XCLS — Not used

33 VDD In DVDD (+5 V) source

34, 35 FR, DO — Not used

36 RS In

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

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

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

SEG1 ~ SEG40 Out Segment signal output

Terminals for the built-in clock pulse generator. The external resistor connected determines the oscillation frequency.

LCD drive voltage input.

the LCD drive signals.

Data/command determination terminal.

High: data, Low: command

Chip enable signal.

Low: disenable

— 5 —

FILTER BLOCK

Since the sound signals from the CPU is stepped waveforms, the filter block is added to smooth the waveforms.

Amp.

TA8248K

Filter

Block

POWER AMPLIFIER (IC201: TA8248K)

The power amplifier is a two-channel amplifier with standby switch. The following table shows the pin function of IC201.

Pin No. Terminal In/Out Function

1 NC — Not used 2 B.S.2 — Terminal for a bootstrap capacitor 3 OUT2 Out Channel 2 output 4 VCC In +9 V source 5 OUT1 Out Channel 1 output 6 B.S.1 — Terminal for a bootstrap capacitor 7 Power GND In Ground (0 V) source 8 Stand by In Power control signal input. 0 V: Off, +9 V: On

9 DC — Terminal for a decoupling capacitor 10 NF1 In Negative feedback input 11 IN1 In Channel 1 input 12 IN2 In Channel 2 input 13 NF2 In Negative feedback input

14, 15 Pre GND In Ground (0 V) source

CPU

MSM6755B-17

— 6 —

MAIN PCB

1) Items to be adjusted:

ADJUSTMENT

Item

Vop voltage setting Voltmeter

2) Adjustment and Test Point Locations

(TOP VIEW)

Test point

Measuring Instrument

(BOTTOM VIEW)

VR1

3) Equipment connection/Procedure

Input Connection

Input Point

Input Signal

Eye

37°

Vop voltage setting

Set Voltmeter

Output R62

Adjust

VR1 Voltmeter R62 Adjust for 4.40 ~ 4.46 V read-

Watching the LCD at a 37° angle to the horizontal, adjust Vop voltage so that unenergized segments are seen dimly.

Output Connection

Output Point

Adjust for

ing on voltmeter under the temparature 20 ~ 25 °C. Make fine adjustment according to the following instruction.

LCD

— 7 —

1

MAJOR WAVEFORMS

2

3

1 Clock pulse

MSM6755B-17 pin 32

4

5

4 Sound waveform (R-ch) Tone: Whistle (59)

JC connector pin 5 Key: A4

5 Sound waveform (L-ch) Volume: Max.

JC connector pin 4

2 Power source DVDD

JC connector pin 8

3 APO signal

JC connector pin 2

6

7

6 Button scan signal KO0

MSM6755B-17 pin 66

7 Button scan signal KO1

MSM6755B-17 pin 67

8

9

8 LCD common signal COM6

SED1278F2A pin 52

9 LCD common signal COM7

SED1278F2A pin 53

— 8 —

Main PCB JCM443-MA1M

PRINTED CIRCUIT BOARDS

5

384

69 7

Top View

21

Bottom View

— 9 —

Main PCB JCM443-MA1M

SCHEMATIC DIAGRAMS

150

1.2 K

2

3

4

5

9

1

SED1278F2A

8

6

7

— 10 —

Sub PCBs JCM451-MA2M/MA3M

— 11 —

Console PCBs JCM443-CN1M/CN2M

— 12 —

Keyboard PCBs JCM6112K-KY1M/KY2M

— 13 —

LCD Common

COM7

COM6

COM5

COM4

COM3

COM2

COM1

SEG1

SEG2

SEG3

SEG4

SEG5

SEG6

SEG7

SEG8

SEG9

SEG10

SEG21

SEG22

SEG23

SEG24

SEG25

SEG26

SEG27

SEG28

SEG29

SEG30

SEG31

SEG32

SEG33

SEG34

SEG35

SEG36

SEG37

SEG38

SEG39

SEG40

Segment

COM11

COM12

SEG39

COM7

COM6

SEG40

COM10

COM5

COM4

COM9

COM14

COM3

COM2

COM15

COM16

COM1

SEG1

SEG11

SEG2

SEG3

SEG12

SEG13

SEG14

SEG4

SEG5

SEG15

SEG6

SEG7

SEG16

SEG17

SEG18

SEG8

SEG9

SEG19

SEG20

SEG10

SEG21

SEG22

SEG21

SEG22

SEG23

SEG24

SEG25

SEG26

SEG27

SEG6

COM16

SEG28

SEG29

COM15

COM14

COM13

SEG30

SEG31

COM12

COM11

SEG32

SEG33

SEG34

COM10

COM9

COM16

SEG35

SEG36

COM15

COM14

SEG37

SEG38

SEG39

COM13

SEG40

COM11

COM12

SEG39

SEG40

COM10

COM9

COM14

COM15

COM16

SEG11

SEG12

SEG13

SEG14

SEG15

SEG16

SEG17

SEG18

— 14 —

SEG19

SEG20

SEG21

SEG22

SEG23

SEG24

SEG25

SEG6

COM16

COM15

COM14

COM13

COM12

COM11

COM10

COM9

COM16

COM15

COM14

COM13

23

EXPLODED VIEW

15

R-1

15

22

21

26

17

18

13

2

3

19

27

16

4

1

20

14

25

9

R-2

7

8

10

24

12

11

6

R-3

5

— 15 —

PARTS LIST

CTK-511

Notes: This parts list does not include the cosmetic parts, which

parts are marked with item No. "R-X" in the exploded view. Contact our spare parts department if you need these parts for refurbish.

1. Prices and specifications are subject to change without prior notice.

2. As for spare parts order and supply, refer to the "GUIDEBOOK for Spare parts Supply", published seperately.

3. The numbers in item column correspond to the same numbers in drawing.

Item Code No. Parts Name Specification Q R

Main PCB

1 6926 0460 PCB/ASS'Y (MA1M) M240626*1 1 B LSI1 2012 5638 LSI/MASK-ROM LC372100PM-G48TE-L 1 A LSI2 2012 5603 LSI/MC MSM6755B-17 1 A LSI3 2012 5569 LSI/LCD DRIVER SED1278F0A 1 A

IC1 2012 1883 IC/MOS RN5VD40AA-TR 1 B

Q1 2252 1239 TRANSISTOR/CHIP 2SC4081T106Q 1 B

VR1 2775 3286 POTENTIOMETER EVM3SSX50B53 1 B

X1 2590 2100

Sub PCB ass'y

2

IC201 2114 5775 IC202

Q201 2250 1594

Q202, 2220 1409

Q204 - Q208

Q203 2251 0921 TRANSISTOR 2SB1240R-TV2-T 1 B D201 2390 1323 DIODE/SHOTTKY RB100A-T32-T 1 B

D202,D203, 2390 1344 DIODE 1SS133T-77-T 5 C

D207 - D209

D204,D210

D205 2360 1939

J201 3501 7049 JACK (POWER) HEC2305-01-330 1 C J202 3612 0665 JACK (PHONE) YKB21-5006 1 C J203 3612 0789 JACK YKB21-5010 1 C J204 3501 4816 JACK/DIN YKF51-5051 1 C

3 6926 0440 PCB/ASS'Y (CN1M) M240623*1 1 C

D302 -D306

LED301 2370 1383 LED TLR124(TPJ56,KT) 1 C

4 6926 0450 PCB/ASS'Y (CN2M) M240624*1 1 C

D310 - D316

5 6926 0490 PCB/ASS'Y (KY1M) M240628*1 1

D701 - D732 2390 1344

6 6926 0500 PCB/ASS'Y (KY2M) M240629*1 1

D733 - D761 2390 1344

7 6922 2720 KEY SET/LT WHITE M312118*1 4 B

8 6922 2730 KEY SET/LT WHITE M312118*2 1 B

9 6906 8481 KEY SET/LT BLACK 10P M140369A-3 2

10 6906 8591 KEY SET/LT BLACK 5P M140369A-4 1 B 11 6906 9191 RUBBER/CONTACT M240549A-2 4 C 12 6906 9201 RUBBER/CONTACT M240550A-2 1 C

13 3122 3545 14 3335 6723 15 3831 0833 16 6926 0270 17 6921 5031 18 6909 5890 19 6926 8030 20 6926 8040

6926 7640 PCB/ASS'Y (MA2M) M140765*1 1 B

2114 1421 IC/PHOTOCOUPLER PC900V 1 B

2390 3018 DIODE 1T2

Console PCBs

2390 1344

Keyboard PCBs

Keyboard unit

Panel unit

Notes: Q – Quantity per unit

OSCILLATOR/CERAMIC

IC/LINEAR (POWER AMP)

TRANSISTOR TRANSISTOR

DIODE/ZENER

DIODE

EL-MODULE LCD SPEAKER RUBBER/INTERCONNECTOR KNOB SWITCH/SLIDE RUBBER/BUTTON RUBBER/BUTTON

R – Rank

— 16 —

CSACS20.00MX040-TC 1 B

TA8248K 1 A

2SA1585STPR 2SC1740SR-TP-T 6 B

MTZJ5.1C-T77-T 1 C

1SS133T-77-T 5 C

1SS133T-77-T 7 C

1SS133T-77-T 32

1SS133T-77-T 29

YML-101 1 B LD-B10114E S12J49A 2 C M440435-2 2 C M311859A-1 1 C CSB-12D 1 C M140524-2 1 C M240560-2 1 C

1B

2C

1B

B C B C

B

Item Code No. Parts Name Specification Q R

21 6926 8050 22 6926 8060 23 24 25 6926 8071 26 6926 8140 27 6926 8160 FILM

6926 8090 6918 1630

Accessory

6906 9043 STAND/NOTE M340701C*2 1

RUBBER/BUTTON RUBBER/BUTTON PANEL/DISPLAY COVER/BATTERY M311164*1 1 SPACER SPACER

M240561-2 1 C M140525-2 1 C M240574-2 1 C

M440667A-1 M440668-1 M440675-1

1X 1X 1X

C

Notes: Q – Quantity per unit

R – Rank

— 17 —

CASIO TECHNO CO.,LTD.

Overseas Service Division

8-11-10, Nishi-Shinjuku Shinjuku-ku, Tokyo 160-0023, Japan

Casio CTK-511 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual