Casio CTK-220L Service Manual Download Page 12 | Manualshive

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Keyboard PCBs KDM4910K-KY1M/KY2M

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Summary of Contents for CTK-220L

Page 1: ...FINGERED CASIO CHORD NORMAL VOLUME SYNCHRO FILL IN START STOP TEMPO TONE SONG BANK STEP 1 STEP 2 STEP 3 MULTI FUNCTION DISPLAY DEMO RHYTHM TONE SONG BANK PART SELECT RHYTHM 0 5 1 6 2 7 3 8 4 9 TRANSPO...

Page 2: ...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...

Page 3: ...age 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...

Page 4: ...g 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...

Page 5: ...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 0 1 2 3 4 Start Stop Up Volume Down KO9...

Page 6: ...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...

Page 7: ...er 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 Ch...

Page 8: ...5B 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 Whistl...

Page 9: ...302 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...

Page 10: ...10K 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 5 4 3 2 1 6 7 SCHEMATIC DIAGRAMS...

Page 11: ...9 Sub PCBs KDM445 MA2M MA3M...

Page 12: ...10 Keyboard PCBs KDM4910K KY1M KY2M...

Page 13: ...11 LED PCB KDM446 LD1M...

Page 14: ...12 PCB NAME LED PCB KDM445 LD2M...

Page 15: ...13 PCB NAME PCB NAME LED PCB KDM446 LD3M LED PCB KDM445 LD4M...

Page 16: ...11 10 3 4 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...

Page 17: ...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 S...

Page 18: ...7 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 Pow...

Page 19: ...MA1100761A Nov 1996...

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