Casio CTK-750 Electronic Keyboard User Manual


 
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IC LEAD IDENTIFICATION AND INTERNAL DIAGRAM
TIMING
GENERATOR
SHIFT REGISTER
LATCH
MAIN DAC
SUB DAC
SUB DAC
MAIN DAC
LRCK
LRSEL/RSI
SI/LSI
CLK
4/8 fs SEL
D.GND
N.C.
D.VDD
A.GND
A.VDD
R.OUT
R.REF
L.REF
L.OUT
11
10
9
6
8
712
54
3
13
14
15
16
1
2
3
2
1
OUT
VDD
VSS
12
3
45
6
VCC
GND
NC
+
-
+
-
12
34
5
67
8
VCC
GND
1A
1
1Y
2
2A 3
2Y
4
3A
5
3Y
6
GND
7
8
9
10
11
5Y
12
6A13
6Y
14
VCC
4A
4Y
5A
UPD6376CX
TC74HC04AP
M5218APR PC900V
S8053ANO
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