Sony STR-K890 Service Manual page 39

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– DISPLAY Board –
IC100 PT6315
LED1
1
LED2 2
LED3 3
LED4
4
OSC
5
DOUT 6
TE
L 13942296513
DIN
7
CLK
8
STB
9
KEY1
10
KEY2 11
– HDMI SW Board –
IC5005 SN74LVC1G3157DCKR
1
B2
GND 2
B1
3
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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
6
S
5 VCC
A
4
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2 9
8
40 39 38 37
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3 6 7 1 3 1 5
14 15 16 17 18
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9 4 2 8
36 35 34
Multiplexed driver
SEG19/GRID10
33
32 SEG18/GRID11
SEG17/GRID12
31
30 VEE
SEG16/KS16
29
0 5 8 2 9 9 4 2 8
SEG15/KS15
28
27 SEG14/KS14
SEG13/KS13
26
SEG12/KS12
25
SEG11/KS11
24
segment driver
SEG10/KS10
23
19 20 21 22
m
STR-K890
9 9
9 9
39