Casio Electronic Keyboard Ctk 220L Users Manual S/M

ctk220l 46b1f8d9-743f-48e5-b9b7-9d8200eebad5 Casio Electronic Keyboard CTK-220L User Guide |

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ELECTRONIC KEYBOARD

CTK-220L

CTK-220L

25 RHYTHMS

POWER/MODE

FINGERED

CASIO CHORD

NORMAL

VOLUME SYNCHRO/

FILL-IN

START/

STOP

TEMPO TONE SONG

BANK STEP 1 STEP 2 STEP 3

MULTI FUNCTION DISPLAY

DEMO

RHYTHMTONE SONG BANK

PART

SELECT

RHYTHM

0

5

1

6

2

7

3

8

4

9

TRANSPOSE/TUNE

¢

¢

¢

¢

ON

OFF





20 SONG BANK KEYBOARD

100 TONES 20 SONG BANK

CONTENTS

Page

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

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

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

Major Waveforms ............................................................................................................................. 6

Printed Circuit Boards ...................................................................................................................... 7

Schematic Diagrams ........................................................................................................................ 8

Exploded View................................................................................................................................ 14

Parts List ........................................................................................................................................ 15

— 1 —

SPECIFICATIONS

GENERAL

Number of keys: 49

Polyphonic: 12-note

Preset tones: 100

Transpose: F# ~ C ~ F: half-note

Auto-rhythms: 25, Tempo: Adjustable, 216 steps (40 ~ 255), initial value: 120

Accompaniment: CASIO Chord, Fingered, Fill-in pattern, Synchro start

Song bank: 20-tune

Digital volume control: 10 steps (0 ~ 9), initial value: 7

Tuning control: 440 Hz ± 50 cents

Built-in speakers: 10 cm dia. × 1 (Output: 2 W)

Terminals: Headphone Jack, Stereo mini Jack [Output impedance: 70 q, Output voltage:

3.6 V (rms) MAX]

Auto power off: Approximately 6 minutes after the last operation

Power source: 2-way AC or DC source

AC: Required optional AD-5 AC adaptor

DC: 6 AA size batteries

Power consumption: 7.7 W

Dimensions (HWD): 85 × 771 × 324 mm (3-3/8 × 30-3/8 × 12-3/4 inches)

Weight: 3.4 kg (7.5 lbs) excluding batteries

ELECTRICAL

Current drain with 9 V DC:

No sound output 160 mA ± 20 %

Maximum volume 840 mA ± 20 %

with white keys C1 to G2 pressed in Synth-Lead 1

Volume: Maximum

Phone output level (Vrms with 8 ohm load):

with key C2 pressed in Synth-Lead 1 98 mV ± 20 %

Speaker output level (Vrms with 4 ohm load):

with key F4 pressed in Synth-Lead 1 2000 mV ± 20 %

Minimum operating voltage: 6.3 V

— 2 —

BLOCK DIAGRAM

Buttons

Illuminant

Keyboard

7 seg. LED

LED Latch IC2, IC3

Q5 ~ Q8

Q1 ~ Q4

PG

X1, Q11

Reset IC

IC1

Power Supply Circuit

Q301 ~ Q304

D334, D336

Amp.

IC301

LA4598 Filter

Q305

Phone/Output

DC+9 V IN APO

MD0 ~ MD7

KO8 ~ KO11

LY1 ~

LY7

KO0 ~ KO7

LX0 ~

LX7

KI0 ~ KI7

CPU

LSI1

MSM 6755B-13

LED Driver

LED Driver

— 3 —

LX0 LX1 LX2 LX3 LX4 LX5 LX6 LX7

LY1 D4 D3 C3 C2 G#2 F#2 D#2 C#2

LY2 C4 E3 B2 D2 A#2 C#3 D#3 F#3

LY3 B3 F3 A2 E2 D#4 C#4 A#3 G#3

LY4 A3 G3 G2 F2 C#5 A#4 G#4 F#4

LY5 E4 C5 D5 B5 D#5 F#5 G#5 A#5

LY6 F4 B4 E5 A5 C6

LY7 G4 A4 F5 G5

CIRCUIT DESCRIPTION

KEY MATRIX

LED MATRIX

KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7

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

KO1 C#2 A2 F3 C#4 A4 F5

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

KO3 D#2 B2 G3 D#4 B4 G5

KO4 E2 C3 G#3 E4 C5 G#5

KO5 F2 C#3 A3 F4 C#5 A5

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

KO7 G2 D#3 B3 G4 D#5 B5

KO8 01234

Start/

Stop Up Volume

Down

KO9 56789Down Volume

Down Synchro/

Fill-In

K10 Tone Rhythm Song

Bank Part

Select One Key One Key Demo

K11 Step-1 Step-2 Step-3 Fingered Casio

Chord Normal Off

NOMENCLATURE OF KEYS

C2

C#2 D#2 F#2 G#2 A#2 C#3 D#3 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

D2 E2 F2 G2 A2 B2 C3 D3 E3 F3 G3 A3 B3 C4 D4 E4 F4 G4 A4 B4 C5 D5 E5 F5 G5 A5 B5 C6

— 4 —

Pin No. Terminal In/Out Function

1 MA14 — Not used.

2 MWEB Out Clock for LED latches

3 ~ 5 — — Not used.

6 MA0 Out 7-seg. LED drive signal

7 ~ 19 MA1 ~ MA11 — Not used.

20 ~ 27 MD0 ~ MD7 Out 7-seg. LED drive signal

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 — Not used. Connected to +5 V.

37 P25/TXD — Not used.

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 and ADC

47 DAOL Out Left channel sound waveform output

48 REFL Out Terminal for the internal DAC and ADC

49 AGdac In Ground source for the internal DAC

50 AGadc In Ground source for the internal ADC

51 ANI — Not used. Connected to ground.

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 APO cancellation signal

58 ~ 65 KI0/P30 ~ KI7/P37 In Terminals for key/button input signal

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

74 ~ 77 KO8/P20 ~ KO11/P23 Out Terminals for button input signal

78 NC9 — Not used.

79 LVCC In +5 V source

80 ~ 95 LX0 ~ LX7, LY0 ~ LY7 Out LED drive signal

96 LGND In Ground source

97 ~ 100 MA18 ~ MA15 — Not used.

CPU (LSI1: MSM6755B-13)

The CPU contains a sound data ROM and a DAC (Digital to Analog Convertor), and it provides a sound

waveform in accordance with the pressed key and the selected tone. The CPU also controls key input, button

input and LED driving. The following table shows the pin functions of LSI1.

— 5 —

LG

LVDD

CPU



LSI1



MSM6755B-13

LX0 ~ LX7

LY1 ~ LY7 Q1 ~ Q4

Q5 ~ Q8

Q2 ~ Q4

La ~ Lg

(Common)

(Segment) MWEB

LED

Latch

IC3

7-segment LED Keyboard LEDs

LED

Latch

IC2

MD0 ~ MD3

MD4 ~ MD7

MA0

Amp.

IC301 Filter Block

Q305 CPU

LSI1

FILTER BLOCK

Since the sound signal from the CPU is a stepped waveform, the filter block is added to smooth the waveform.

POWER AMPLIFIER (IC301: LA4598)

The power amplifier is a two-channel amplifier with standby switch.

The following table shows the pin function of IC301.

Pin No. Terminal In/Out Function

1 Power GND In Ground (0V) source

2 Ch1 B.S. — Terminal for a bootstrap capacitor

3 Ch1 OUT Out Channel 1 output

4 VCC In +9V source

5 Ch1 N.F. In Negative feedback input

6 Ch1 IN In Channel 1 input

7 D.C. — Terminal for a decoupling capacitor

8 Pre GND In Ground (0V) source

9 Stand by In Power control signal input. 0 V: Off, +9 V: On

10 Ch2 IN In Channel 2 input

11 Ch2 N.F. In Negative feedback input

12 Ch2 OUT Out Channel 2 output

13 Ch2 B.S. — Terminal for a bootstrap capacitor

14 NC — Not used

LED DRIVING

— 6 —

1

2

4

3

5

6

1 APO signal

MSM6755B-13 pin 39

2 Reset signal

RH5VL40AA pin 1

4 Sound signal

JH connector pin 2

5 LED drive signal LX0

MSM6755B-13 pin 88

3 Clock

MSM6755B-13 pin 32

6 LED drive signal LY1

MSM6755B-13 pin 81

Tone: Whistle (59)

Key : A4 Key: D4

MAJOR WAVEFORMS

— 7 —

24

1

3

5

6

PRINTED CIRCUIT BOARDS

Sub PCB KDM445-MA2M

Top view

Main PCB JCM446-MA1M

Bottom view Top view

GR

0

R

5

5

E

R309

R324

VC

JA3

5

5

D329 R354

Q305

C363

R353

R352

R342

55

125

5

5

75 125

125

225

C348

C342

C374

R326

R325

C341

C344 C350

IC301

C347

C345

C346

C349

R365

R339

C361

225

200

100

5

R310

R348

R343

C339

B

5

E

5

5

5

AVDD

DVDD

LVDD

VCC

R320

R318

R302

JA5

JA4 125

D331

J301

J302

C368

D333

5

GR

PS

D332 0

100

100

75

75

75

D320

D319

D318

D317

D316

D315

D310

D308

D306

D307

D305

D309

D323

D322

D321

12 JJ 1 10 JH 1

D301

D330

D325

D326

D324

175

250 R373

R370

R368

R369

C332

D302

C371

R338

C306

C307

R311

100

JA2

JA1

125

Q301

Q302

C336

Q303

D334

C330

R321

R323

R322

D336 D308

C334

C331

C335 R388

Q304

R317

R316

D304

R303

R301

C301

C328 L301

L302

445B

UJW5

L305

R335

R333

R331

C352

L303

L304

LED301

D335

C333

R319

EB

150

150

75

B

B

E

100

5

5

5

5

5

BE 5

75

D328

D327

D314

D312

D311

D313

R327

C337

5

C373

Q310

C355

C372

B

E

R374

R371

R372

C359

R366

C356

R

Q312

BE

C364

— 8 —

Connected to KDM4910K-KY2M

Connected to KDM445-LD2M

Note: KI signals are renamed. (e.g. KI0 on the keyboard PCB ⇒ KI1 on the main PCB)

NO USE FOR CTK-330

NO USE FOR CTK-330

NO USE FOR CTK-330

54

3

21

6

7

SCHEMATIC DIAGRAMS

Main PCB JCM446-MA1M

— 9 —

Sub PCBs KDM445-MA2M/MA3M

— 10 —

Keyboard PCBs KDM4910K-KY1M/KY2M

— 11 —

LED PCB KDM446-LD1M

— 12 —

PCB NAME

LED PCB KDM445-LD2M

— 13 —

PCB NAME

PCB NAME

LED PCB KDM446-LD3M

LED PCB KDM445-LD4M

11

10

34

R-3

R-4

1

14

13

12

2

18

19

15

16

5

6

17 9

7

8

R-2

R-1

EXPLODED VIEW

— 14 —

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 with-

out 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.

PARTS LIST

CTK-220L

Item Code No. Parts Name Specification Q R

Main PCB

1 6925 6160 Main PCB ass'y (MA1M) M240438*3 1 B

LSI1 2012 4690 LSI, CPU MSM6755B-13 1 A

IC1 2105 5922 IC RH5VL40AA-T1 1 A

IC2 2105 4452 IC HD74HC174FPTR 1 A

IC3 2105 5796 IC HD74HC4511FPTR 1 A

Q1 - Q4 2259 2555 Transistor, Chip, Digital UMW1NTL 4 A

Q5 - Q8 2259 2562 Transistor, Chip, Digital UMS1NTL 4 A

Q9 2259 2646 Transistor, Chip, Digital UMH3NTN 1 A

Q10 2259 2548 Transistor, Chip, Digital DTC143EUAT106 1A

Q11 2252 1239 Transistor, Chip 2SC4081-T106Q 1A

D1 2390 2576 Diode, Chip, Schottky RB501V-40TE-17 1B

D3 2390 1820 Diode, Chip 1SS355TE-17 1 B

X1 2590 1526 Oscillator, Ceramic EFO-EN2005C4 1 B

LED1 2370 1141 LED, 7-seg. SL-9352-60 1B

Sub PCB ass'y

26925 6173 Sub PCB ass'y M140476*2 1B

IC301 2114 2891 IC LA4598 1A

Q301 2250 0742 Transistor 2SA1703S,T-AN-T 1A

Q302, Q305 2220 1409 Transistor 2SC1740SR-TP-T 2A

Q303 2253 0581 Transistor 2SD1858R,S-TV6-T 1 A

Q304 2253 0455 Transistor 2SD1762E.F 1 A

2390 1344 Diode 1SS133T-77-T 31 B

D304 2360 1729 Diode, Zener MTZJ5.1A-T77-T 1 B

D331 2390 0378 Diode 1SR139-100T-32-T 1 B

D333 2390 1323 Diode RB100A-T32-T 1 B

D334, D336 2360 2002 Diode, Zener MTZJ5.6B-T77-T 2 B

LED301 2370 1106 LED MPR3338S-B99 1 B

J301 3501 7049 Jack, Power HEC2305-01-330 1 B

J302 3501 4382 Jack, Phone HSJ2000-01-010 1 B

Keyboard PCBs

2301 0101 Diode 1S2473T-77-T 49 B

3 6925 6180 Keyboard PCB ass'y M140449*2 1B

LED PCBs

2370 1323 LED (for white key) KR3301X-J344K 29 B

4 6925 6183 LED PCB ass'y LD1,2M M140473*1 1 C

2370 1330 LED (for black key) KR3302X-J345K 20 B

5 6925 1340 LED PCB ass'y LD3M M240428*1 1 C

6 6925 6184 LED PCB ass'y LD4M M240500*1 1 C

Mechanical Parts

7 6925 2160 Battery cover M340490*1 1B

8 6925 6261 Slide knob M311859A-6 1B

9 6925 5380 Display plate M340534-2 1C

10 6909 5890 Slide contact CSB-12D 1B

11 3831 1072 Speaker S10JA49A 1B

12 6925 6370 Rubber button M240374-3 1B

13 6906 8371 Rubber button M240414-2 1B

14 6925 6300 Rubber button M240413-2 1B

15 6925 1700 White key set, LSK-CB M340489*1 3 A

16 6925 1710 White key set, LSK-CS M340489*2 1A

17 6925 1720 Black key set, LSK-10P M140369-1 2A

18 6923 2390 Key contact rubber, 18 M240025-1 1A

19 6922 4000 Key contact rubber, 31 M111765-1 1A

Other

6916 7880 Music stand M310827-1 1C

— 15 —

MA1100761A

Nov, 1996