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Electronic Keyboard
Casio
CTK-750
- page 24
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24
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30 pages, 1.71 Mb
— 22 —
B C E
B C E
E C B
E C B
Q2: 2SD1762E,F
Q4: 2SB1274
Q3, Q5, Q7, Q11/12: 2SC1740SQ
Q13: 2SA933SQ
Q14~21: DTA114TS
Q1/6: 2SB1240Q,R
Contents
Main
CONTENTS
SPECIFICATIONS
General
Electrical
REPLACING THE DSP (HG51A115A01FD)
3
BLOCK DIAGRAM
CIRCUIT DESCRIPTION
Page
Page
Page
Page
Page
~
Page
12
13
WIRING DIAGRAM
Red Blue
PR
M615T-KY2M
M615T-KY1M
Page
Page
Page
SCHEMATIC DIAGRAMS
Main PCB M5712-MA1M
Page
Page
Page
21
IC LEAD IDENTIFICATION AND INTERNAL DIAGRAM
UPD6376CX
1 2 3
TC74HC04AP M5218APR PC900V
S8053ANO