— 2 —
Buttons
Illuminant
Keyboard
7 seg. LED
LED Latch
IC2, IC3
Q5 ~Q8
Q1 ~Q4
PG
X1, Q11
Reset IC
IC1
Q307
Power Supply Circuit
Q301 ~Q304
D334, D335
Amp.
IC301
LA4598
Filter (L)
Q306
Filter (R)
Q305
Phone/Output
DC+9V IN
APO Cancellation
Signal
APO
MA0
~
MA16
MD0 ~MD7
Sound Source ROM
LSI2
MX23C1010MC-12CA45
KO8 ~KO11
LY0 ~
LY7
KO0 ~KO7
LX0 ~
LX7
KI0 ~KI7
CPU
LSI1
MSM 6755B-07
LED Driver
LED Driver
BLOCK DIAGRAM
Summary of Contents for CTK-520L
Page 11: ...8 SCHEMATIC DIAGRAMS Main PCB JCM446 MA1M 5 1 6 7 2 3 4...
Page 12: ...9 Sub PCB KDM446 MA2M...
Page 13: ...10 Keyboard PCBs KDM6111K KY1M KY2M...
Page 14: ...11 LED PCB KDM446 LD1M...
Page 15: ...12 LED PCB KDM446 LD2M...
Page 16: ...13 LED PCBs KDM446 LD3M LD4M LD5M KDM446 LD5M KDM446 LD4M KDM446 LD3M...
Page 21: ...MA0800761A Aug 1996...
