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ELECTRONIC KEYBOARD

CTK-401

CTK-401

POWER/MODE

FINGERED

MAIN

VOLUME

SYNCHRO/

FILL-IN

START/

STOP

TEMPO

CHORD BOOK

M

0

1

2

3

4

5

6

7

8

9

m

7

M7

dim

aug

sus4

-5

add9

CLEAR

ACCOMP VOLUME

CASIO
CHORD

ON

OFF

NORMAL

100 RHYTHMS

100 SONG BANK (00-49)

TONE

SONG BANK

REW

STOP

FF

100 SONG BANK KEYBOARD
MUSICAL INFORMATION SYSTEM
SONG BANK CONTROLLER

LEFT

ON/OFF

RIGHT

ON/OFF

PLAY/

PAUSE

TRANSPOSE/
TUNE

RHYTHM

SO

NG BA

NK CONTRO

LLE

R

100 TONES

100 SONG BANK (50-99)

TONE

RHYTHM

SONG BANK

MUSICAL INFORMATION SYSTEM

STATUS

TEMPO

VOLUME

Summary of Contents for CTK-401

Page 1: ...dd9 CLEAR ACCOMP VOLUME CASIO CHORD ON OFF NORMAL 100 RHYTHMS 100 SONG BANK 00 49 TONE SONG BANK REW STOP FF 100 SONG BANK KEYBOARD MUSICAL INFORMATION SYSTEM SONG BANK CONTROLLER LEFT ON OFF RIGHT ON...

Page 2: ...CONTENTS Specifications 1 Block Diagram 2 Circuit Description 3 Adjustment 7 Major Waveforms 8 Printed Circuit Boards 9 Schematic Diagrams 11 Exploded View 15 Parts List 17...

Page 3: ...y 440 Hz 50 cents Volume 0 to 9 10 steps Terminals Phones Output terminal Stereo standard jack Output Impedance 100 Output Voltage 3 0 V RMS MAX Power supply terminal 9 V DC Power supply Dual power su...

Page 4: ...78F0A LSI3 Reset IC IC1 Oscillator X1 Q1 Power Supply Circuit Q101 Q103 D104 Power Amp TA8248K IC101 Filter L Q104 Filter R Q105 Output VC VCC DVDD APO MD0 MD7 MA0 MA17 DC 9 V IN DB4 DB7 COM1 COM16 SE...

Page 5: ...4 D5 A 5 KO7 G2 D 3 B3 G4 D 5 B5 KO8 0 Tempo Down Tempo Up Volume Down Volume Up KO9 3 2 1 Start Stop Synchro Fill in Chord Book Accomp Volume KO10 6 5 4 Transpose Tune Song Bank Rhythm Tone KO11 9 8...

Page 6: ...4 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 NC...

Page 7: ...ver 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 Pin No Terminal In Out Function 1 22 63 80 23 VSS GND 0 V source Ter...

Page 8: ...n 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...

Page 9: ...reading on voltmeter Makefineadjustment accord ing to the next instruction 53 5 LCD Eye Watching the LCD at a 53 5 angle to the horizontal adjust Vop voltage so that unenergized segments are seen dim...

Page 10: ...ctor pin 5 2 3 4 Sound waveform R ch Tone Whistle JC connector pin 4 Key A4 5 Sound waveform L ch Volume JC connector pin 3 4 5 6 Button scan signal KO6 JA connector pin 14 7 Button scan signal KO7 JA...

Page 11: ...9 PRINTED CIRCUIT BOARDS Main PCB JCM442 MA1M Top View Bottom View 1 2 3 4 5 8 9 6 7...

Page 12: ...11 SCHEMATIC DIAGRAMS Main PCB JCM442 MA1M 6 7 1 9 8 5 4 3 2...

Page 13: ...12 Sub PCB JCM442 MA2M...

Page 14: ...13 Keyboard PCBs KDM4910K KY1M KY2M...

Page 15: ...G17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 COM15 COM14 COM13 COM12 COM11 COM10 COM9 COM16 COM15 COM14 COM13 COM7 COM6 COM5 COM4 COM3 COM2 COM1 SEG2 COM11 COM12 SEG39 SEG40 COM10 COM9 COM14 COM15 COM16 SE...

Page 16: ...15 EXPLODED VIEW 18 14 13 15 12 11 19 17 16 10 R 1 R 2 R 3 5 6 8 7 9 4 R 4 R 6 R 5 4 3 1 2...

Page 17: ...r 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...

Page 18: ...A D105 2360 1799 DIODE ZENER MTZJ5 1A T77 T 1 A LED101 2370 0112 LED LN28RPX TT8 1 C J101 3501 7049 JACK POWER HEC2305 01 330 1 B J102 3612 0665 JACK PHONE YKB21 5006 1 B Keyboard PCBs 3 6926 0180 PCB...

Page 19: ...MA0600571A...

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