Casio CTK-220L manual LED PCB KDM446-LD3M, LED PCB KDM445-LD4M, Pcb Name

Models: CTK-220L

1 19

Page 15

PCB NAME

— 13 —

Image 15

Contents

MULTI FUNCTION DISPLAY CTK-220LELECTRONIC KEYBOARD 20 SONG BANK KEYBOARDSchematic Diagrams CONTENTSSpecifications Block DiagramSPECIFICATIONS GENERALELECTRICAL IC301 BLOCK DIAGRAMReset IC IC1 Power Supply CircuitNOMENCLATURE OF KEYS CIRCUIT DESCRIPTIONKEY MATRIX LED MATRIXFunction CPU LSI1 MSM6755B-13Pin No In/OutMWEB POWER AMPLIFIER IC301 LA4598FILTER BLOCK LED DRIVINGMAJOR WAVEFORMS Top view PRINTED CIRCUIT BOARDSSub PCB KDM445-MA2M Main PCB JCM446-MA1MNO USE FOR CTK-330 SCHEMATIC DIAGRAMSMain PCB JCM446-MA1M NO USE FOR CTK-330Sub PCBs KDM445-MA2M/MA3M Keyboard PCBs KDM4910K-KY1M/KY2M LED PCB KDM446-LD1M PCB NAME LED PCB KDM445-LD2MPCB NAME LED PCB KDM446-LD3MLED PCB KDM445-LD4M PCB NAMEEXPLODED VIEW R-1 R-2R-3 R-4 CTK-220L PARTS LISTMain PCB SpecificationCode No Parts NameNov MA1100761A