Sony STR-K660P Service Manual page 27

QQ
3 7 63 1515 0
LED1
1
LED2
2
3
LED3
LED4
4
OSC
5
DOUT 6
DIN 7
TE
L 13942296513
CLK
8
STB
9
KEY1 10
KEY2 11
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http://www.xiaoyu163.com
IC100 PT6315 (DISPLAY BOARD)
44 43 42 41
Grid driver
Command decoder
Display memory
24 bits x 12 words
OSC
Timing generator
key scan
Key data memory
Serial
(2 x 16 bits)
interface
12 13
IC101 TC74ACT08P (DISPLAY BOARD)
x ao
y
i
GND
http://www.xiaoyu163.com
8
40 39 38 37
Q Q
3 6 7 1 3
14 15 16 17 18
1A VCC
1 14
13 4B
1B
2
4A
12
1Y 3
11
4 4Y
2A
10 3B
2B
5
u163
9 3A
6
2Y
.
3Y
7 8
2 9 9 4 2 8
36 35 34
Multiplexed driver
SEG19/GRID10
33
32 SEG18/GRID11
31 SEG17/GRID12
30 VEE
SEG16/KS16
29
28 SEG15/KS15
1 5 0 5 8 2 9 9 4
27 SEG14/KS14
26 SEG13/KS13
25 SEG12/KS12
SEG11/KS11
24
segment driver
SEG10/KS10
23
19 20 21 22
m
co
STR-K660P
9 9
2 8 9 9
27