Casio CTK-401 manual Printed Circuit Boards

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PRINTED CIRCUIT BOARDS

Main PCB JCM442-MA1M

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5

4

3

6

2 7

Top View

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Bottom View

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Contents CTK-401 Contents Electrical SpecificationsGeneral Block Diagram Nomenclature of Keys Circuit DescriptionKEY Matrix CPU LSI1 MSM6755B-17 Lvcc LCD Driver LSI3 SED1278F0AFilter Block Power Amplifier IC101 TA8248KMain PCB AdjustmentMajor Waveforms Printed Circuit Boards Schematic Diagrams Sub PCB JCM442-MA2M Keyboard PCBs KDM4910K-KY1M/KY2M Segment LCDExploded View Parts List Keyboard PCBs MA0600571A