Casio CTK-501, Service Manual

Page 1: ...ERING PART LEFT ACCOMP RIGHT MELODY 1 OCTAVE UP PEDAL SUSTAIN 100 SONG BANNK KEYBOARD MUSICAL INFORMATION SYSTEM ON OFF FINGERED SYNCHRO FILL IN CHORD BOOK TONE M m M7 dim aug 7 sus4 5 add9 CLEAR 0 1...

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 16 Parts List 17...

Page 3: ...umber Tempo Tempo value metronome synchro standby beat indicator Chord Chord name Chord form Fingering Fingering indcators parts pedal Song bank status PLAY PAUSE REW FF Staff 5 octaves with sharp and...

Page 4: ...3 Reset IC IC1 Oscillator X1 Q1 Power Supply Circuit Q201 Q203 Q208 D205 Power Amp TA8248K IC201 Filter L Q206 Filter R Q205 Output VC VCC DVDD APO DC 9V IN DB4 DB7 MIDI IN MIDI OUT COM1 COM16 SEG1 SE...

Page 5: ...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...

Page 6: ...sed 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...

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: ...er R62 Adjust for 4 4 0 1 V reading on voltmeter Makefineadjustment accord ing to the next instruction Watching the LCD at a 37 angle to the horizontal adjust Vop voltage so that unenergized segments...

Page 10: ...or pin 2 2 3 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 4 5 6 Button scan signal KO0 MSM6755B 17 pin 66 7 Button scan signal KO...

Page 11: ...9 PRINTED CIRCUIT BOARDS Main PCB JCM443 MA1M Top View Bottom View 5 2 1 3 4 8 9 6 7...

Page 12: ...11 SCHEMATIC DIAGRAMS Main PCB JCM443 MA1M 1 7 6 2 3 4 5 9 8...

Page 13: ...12 Sub PCB JCM443 MA2M...

Page 14: ...13 Console PCBs JCM443 CN1M CN2M...

Page 15: ...14 Keyboard PCBs JCM6112K KY1M KY2M...

Page 16: ...SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG6 COM16 COM15 COM14 COM13 COM12 COM11 COM10 COM9 COM16 COM15 COM14 COM13 COM7 COM6 COM5 COM4 COM3 COM2 COM1 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SE...

Page 17: ...16 EXPLODED VIEW 13 13 16 17 18 19 20 21 15 22 23 R 1 R 2 2 4 3 1 6 5 8 7 9 14 10 12 11 R 3...

Page 18: ...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 19: ...5051 1 B Console PCBs 3 6926 0440 PCB ASS Y CN1M M240623 1 1 C D302 D306 2390 1344 DIODE 1SS133T 77 T 5 B LED301 2370 1383 LED TLR124 TPJ56 KT 1 B 4 6926 0450 PCB ASS Y CN2M M240624 1 1 C D310 D316 2...

Page 20: ...Item Code No Parts Name Specification Q R Accessory 6926 1541 STAND NOTE M340701A 1 1 B Notes Q Quantity per unit R Rank 18...

Page 21: ...MA0600571A...