Casio CTK-750 manual IC Lead Identification and Internal Diagram, S8053ANO, M5218APR, PC900V

Page 23

IC LEAD IDENTIFICATION AND INTERNAL DIAGRAM

 

 

 

UPD6376CX

 

 

 

 

 

 

 

 

MAIN DAC

 

11 L.OUT

LRCK 13

 

SHIFT REGISTER LATCH

 

 

 

 

 

LRSEL/RSI 14

TIMING GENERATOR

 

SUB DAC

 

10 L.REF

SI/LSI 15

 

 

 

 

 

CLK

16

 

SUB DAC

 

9

R.REF

4/8 fs SEL

1

 

 

 

MAIN DAC

 

6

R.OUT

 

 

 

 

 

 

D.GND

2

 

 

 

 

 

 

 

 

 

3

4

5

12

7

8

 

 

 

N.C.

D.VDD

A.GND

 

A.VDD

 

1A 1

1Y 2

2A 3

2Y 4

3A 5

3Y 6

GND 7

 

S8053ANO

 

 

 

 

VDD 2

 

 

 

 

 

 

 

 

1

OUT

 

 

 

 

VSS 3

 

 

 

 

 

 

 

 

 

 

 

 

1

2

3

TC74HC04AP

 

 

M5218APR

 

 

 

 

 

 

 

 

 

 

 

8

7

6

5

 

 

14

VCC

 

 

 

 

 

VCC

 

 

-

 

 

 

 

 

 

 

 

 

 

13 6A

 

 

+

 

 

 

 

 

 

 

 

 

12

6Y

 

 

 

 

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

11

5A

1

2

3

4

105Y

9 4A

8 4Y

PC900V

VCC GND

6 5 4

NC

1 2 3

— 21 —

Image 23
Contents CTK-750 Contents General SpecificationsElectrical Replacing the DSP HG51A115A01FDUPD6376CX Block DiagramKey Matrix Circuit DescriptionMidi Reset CircuitNomenclature of Keys Button MatrixPin No Terminal In/Out Function CPU HD6433298A18PGate Array UPD65005C-578 Digital Signal Processor HG51A115A01FD Block diagram of DSP and DAC circuit Key Touch LSI HG52E35P Filter Block Avdd Power Amplifier LA4620Power Supply Circuit Name Voltage For operationM5712-CN1M Wiring DiagramMajor Waveforms Page PCB View and Major Check Points Schematic Diagrams Console PCB M5712-CN1M Keyboard PCBs M615T-KY1M, KY2M Exploded View PC900V IC Lead Identification and Internal DiagramS8053ANO M5218APRBe C B Q2 2SD1762E,F Q4 2SB1274EB C E Parts List N N FOB Japan Code No Parts Name Specification Yen Unit Price Lower Case Screws MA0300941A