Sony HCD-GTX777 Service Manual page 68

HCD-GTX777/GTX787/GTX888
QQ
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TE
L 13942296513
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68
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IC502 TC74VHC157FT(EKJ) (BD93 Board)
IC200 TC74VHC157FT(EKJ) (MAIN Board)
SELECT 11 1
1A 2
1A
INPUT
3
1B 1B
1Y 4 1Y
OUTPUT
2A 5 2A
INPUT
6
2B 2B
OUTPUT 2Y 7 2Y
GND 8
IC201 TK63115SCL-G@GT (BD93 Board)
VIN 1
GND 2
V REF
ON/OFF
CONTROL
VCONT 3
IC701 BA6956AN (DRIVER Board)
IC712 BA6956AN (DRIVER Board)
TSD
1 2 3 4
x ao u163
y
i
http://www.xiaoyu163.com
2 9
8
16 V
CC
S
15 STROBE
G
14 4A
4A
INPUT
4B
4B 13
4Y 11 12 4Y OUTPUT
3A
3A 11
INPUT
3B 10 3B
3Y
9 3Y OUTPUT
5
VOUT
Q Q
3 6 7 1 3 1 5
THERMAL &
OVER CURRENT
PROTECTION
4 NC
CONTROL LOGIC
5 6 7 8 9
co
.
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9