Sony HCD-GTX88 Service Manual page 66

HCD-GTX88
IC563 BU4052BCF-E2 (MAIN Board (2/4))
IC564 BU4052BCF-E2 (MAIN Board (2/4))
1 2
Y0 Y2
IC566 TC74HC4066AFT(EL) (MAIN Board (2/4))
IC567 TC74HC4066AFT(EL) (MAIN Board (2/4))
1I/O 1
1O/I 2
2O/I 3
2I/O 4
2C 5
3C 6
GND 7
IC568 TC74VHC157FT(EKJ) (MAIN Board (2/4))
SELECT 11 1
S
1A 2 1A G
INPUT
1B 3 1B 4A
4
OUTPUT 1Y 1Y 4B
2A 5 2A 4Y
INPUT
6
2B 2B 3A
OUTPUT 2Y 7 2Y 3B
3Y
GND 8
66
VDD X2 X1 X
16 15 14 13
3 4 5
Y Y3 Y1
14 VCC
13 1C
12 4C
11 4I/O
10 4O/I
9 3O/I
8 3I/O
16
V
CC
15 STROBE
4A
14
INPUT
4B
13
11 12 4Y OUTPUT
3A
11
INPUT
10 3B
3Y
9 OUTPUT
X0 X3
12 11
BINARY TO 1 OF 4
DECODER WITH INHIBIT
A B
10 9
LEVEL
CONVERTER
6 7 8
INH VEE VSS