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Casio
CTK-220L manual Keyboard PCBs KDM4910K-KY1M/KY2M
Models:
CTK-220L
1
12
19
19
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19 pages
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Specification
Parts list
Block Diagram
POWER AMPLIFIER IC301 LA4598
Page 12
Image 12
Keyboard PCBs
KDM4910K-KY1M/KY2M
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Page 11
Page 13
Page 12
Image 12
Page 11
Page 13
Contents
CTK-220L
ELECTRONIC KEYBOARD
20 SONG BANK KEYBOARD
MULTI FUNCTION DISPLAY
CONTENTS
Specifications
Block Diagram
Schematic Diagrams
SPECIFICATIONS
GENERAL
ELECTRICAL
BLOCK DIAGRAM
Reset IC IC1
Power Supply Circuit
IC301
CIRCUIT DESCRIPTION
KEY MATRIX
LED MATRIX
NOMENCLATURE OF KEYS
CPU LSI1 MSM6755B-13
Pin No
In/Out
Function
POWER AMPLIFIER IC301 LA4598
FILTER BLOCK
LED DRIVING
MWEB
MAJOR WAVEFORMS
PRINTED CIRCUIT BOARDS
Sub PCB KDM445-MA2M
Main PCB JCM446-MA1M
Top view
SCHEMATIC DIAGRAMS
Main PCB JCM446-MA1M
NO USE FOR CTK-330
NO USE FOR CTK-330
Sub PCBs KDM445-MA2M/MA3M
Keyboard PCBs KDM4910K-KY1M/KY2M
LED PCB KDM446-LD1M
LED PCB KDM445-LD2M
PCB NAME
LED PCB KDM446-LD3M
LED PCB KDM445-LD4M
PCB NAME
PCB NAME
EXPLODED VIEW
R-1 R-2
R-3 R-4
PARTS LIST
CTK-220L
Specification
Code No
Parts Name
Main PCB
Nov MA1100761A
