Sony STR-KS2000 Service Manual - Page 41
IC1003, 1017, TC7WH157FK TE85R, IC1008, 1900, TC74VHC157FT EKJ, IC1012, SI-3050KM-TL, IC1014,
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• IC Block Diagrams - MAIN Board - IC1003, 1017 TC7WH157FK (TE85R) A1 B2 Y3 GND 4 EN G A Y B Y 8 VCC 171 ST 161 SELECT 5Y STR-KS2000 IC1008, 1900 TC74VHC157FT (EKJ) SELECT 111 1A 2 INPUT 1B 3 OUTPUT 1Y 4 2A 5 INPUT 2B 6 OUTPUT 2Y 7 GND 8 S 1A G 1B 4A 1Y 4B 2A 4Y 2B 3A 2Y 3B 3Y 16 VCC 15 STROBE 14 4A INPUT 13 4B 112 4Y OUTPUT 11 3A INPUT 10 3B 9 3Y OUTPUT IC1012 SI-3050KM-TL VC 1 VIN 2 GND 3 VOUT 4 ADJ 5 TSD - + REF CK VCC D PR Q CLR IC1014 TC7WH74FU (TE12R) 8765 SRQ CDQ 1234 GND Q IC1016 TC74VHC393FT (EL) 14 13 12 11 10 9 8 VCC QA QB QC QD CLEAR A CLEAR A QA QB QC QD GND 1234567 41
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STR-KS2000
41
IC Block Diagrams
– MAIN Board –
IC1003, 1017
TC7WH157FK (TE85R)
SELECT
11
6
ST
11
7
A
1
2
3
A
B
Y
5
Y
B
GND
4
VCC
8
Y
EN
G
Y
IC1008, 1900
TC74VHC157FT (EKJ)
SELECT
11
1
1A
2
3
4
5
6
7
INPUT
INPUT
OUTPUT
OUTPUT
1A
1B
1Y
2A
2B
2Y
1B
1Y
2A
2B
2Y
GND
8
V
CC
STROBE
16
4A
15
14
13
11
12
11
10
INPUT
INPUT
OUTPUT
OUTPUT
G
4B
4Y
3A
4A
4B
4Y
3A
3B
9
3B
3Y
3Y
S
IC1012
SI-3050KM-TL
1
VC
TSD
2
VIN
3
GND
4
VOUT
5
ADJ
+
–
REF
IC1014
TC7WH74FU (TE12R)
6
CLR
7
PR
8
VCC
5
Q
R
S
Q
3
Q
2
D
4
GND
1
CK
Q
D
C
IC1016
TC74VHC393FT (EL)
14
13
12
11
10
9
8
1
2
3
4
5
6
7
Q
A
Q
B
Q
C
Q
D
A
CLEAR
VCC
Q
A
Q
B
Q
C
Q
D
A
CLEAR
GND