Sony STR-KM2 Service Manual page 48

STR-KM2/KM3
IC100 PT6315 (DISPLAY BOARD)
44 43
1
SW1
SW2 2
3
SW3
SW4 4
OSC OSC
5
DOUT 6
DIN 7
Serial
interface
CLK 8
STB 9
10
KEY1
11
KEY2
12 13
IC3507 TC74LCX541FT (EKJ) (HDMI RE BOARD (2/2)) (KM3)
Y8 11
10 GND
9 A8
Y7 12
Y6 13
8 A7
Y5 14 7 A6
Y4 15 6 A5
Y3 16 5 A4
Y2 17 4 A3
Y1 18
3 A2
G2 19 2 A1
Vcc 20 1 G
48
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)
14 15 16
38 37 36 35 34
Multiplexed driver
segment driver
17 18 19 20 21 22
GRID10
33
32 GRID11
SEG17
31
30 VEE
SEG16
29
SEG15
28
27 SEG14
26 SEG13
25 SEG12
24 SEG11
23 SEG10