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Sony STR-K670P Service Manual page 30

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STR-K670P
QQ
3 7 63 1515 0
– DISPLAY Board –
IC100 PT6315
LED1
1
LED2
2
3
LED3
LED4
4
OSC
OSC
5
DOUT
6
TE
L 13942296513
DIN
7
Serial
interface
CLK
8
STB
9
KEY1
10
KEY2
11
12
13
www
.
30
http://www.xiaoyu163.com
44
43
42
41
40
39
Grid driver
Command decoder
Display memory
24 bits x 12 words
Timing generator
key scan
Key data memory
(2 x 16 bits)
IC101 TC74ACT08P
1A
1
1B
2
1Y
3
2A
4
2B
5
x
ao
2Y
6
y
GND
7
i
http://www.xiaoyu163.com
8
38
37
36
35
Multiplexed driver
Q Q
3
6 7
1 3
segment driver
14
15
16
17
18
19
20
VCC
14
13
4B
4A
12
11
4Y
10
3B
u163
9
3A
8
3Y
.
2 9
9 4
2 8
34
SEG19/GRID10
33
32
SEG18/GRID11
31
SEG17/GRID12
30
VEE
1 5
0 5
8
SEG16/KS16
2 9
9 4
29
28
SEG15/KS15
27
SEG14/KS14
26
SEG13/KS13
25
SEG12/KS12
SEG11/KS11
24
SEG10/KS10
23
21
22
m
co
9 9
2 8
9 9

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