Sony STR-KM2 Service Manual page 45

• IC Block Diagrams
IC2007 TC74VHC393FT (ELK) (DIGITAL AUDIO BOARD (3/4))
14 13 12 11 10 9
VCC
Q Q Q
A B C
A
CLEAR
CLEAR
A
Q Q Q Q
A B C D
1 2 3 4 5 6
IC2019 74AHC1G08GW-125 (DIGITAL AUDIO BOARD (2/4))
IN VCC
1 5
IN 2
3 4 OUT
GND
IC2020 S-80929CNMC-G8ZT2G (DIGITAL AUDIO BOARD (2/4))
IC2034 S-80929CNMC-G8ZT2G (DIGITAL AUDIO BOARD (1/4))
OUT 1
VDD 2
–
+
VREF
VSS 3
IC2032 TC74VHC157FT (EKJ) (DIGITAL AUDIO BOARD (2/4))
IC2804 TC74VHC157FT (EKJ) (DIGITAL AUDIO BOARD (3/4))
16
SELECT 11 1 V
CC
S
1A 2 1A G 15 STROBE
INPUT
1B 3 1B 4A 14 4A
4 13 4B
OUTPUT 1Y 1Y 4B
5 11 12 4Y
2A 2A 4Y
INPUT
3A
2B 6 2B 3A 11
3B
OUTPUT 2Y 7 2Y 3B 10
3Y
3Y
GND 8 9
IC2033 TC7SH126FU (DIGITAL AUDIO BOARD (2/4))
5 4
1 2 3
8
Q
D
GND
7
5 CD
DELAY
CIRCUIT
4 NC
INPUT
OUTPUT
INPUT
OUTPUT
STR-KM2/KM3
Ver. 1.2
45