Mitsubishi HS-U748 Service Manual page 76

S812 S811 S810
R801
N
4
HS-U748
V8A0
STBY5
L8A0
C8A0
IC8A0
R8A5
R8A4
DATAI
DATAO
SUBCLK
FLDCS
S8A7 S8A6 S8A5
R8E9 R8E8 R8E7 R8E6 R8E5 R8E4 R8E3
R8A0 R8A1 R8A2
R8A3
S8A4 S8A3 S8A2 S8A1 S8A0
D8A4
IC8A0 PT6958
3
DIN CONTROL
2
DOUT SERIAL
4 DATA
CLK
INTERFACE
DISPLAY
5
STB MEMORY
1
TIMING
OSC OSC
GENERATOR
KEY MATRIX
MEMORY
DIMMING
CIRCUIT
6 7 8 9 10,21 22,28
K1 K2 K3 K4 VDD GND
R8E2 R8E1 R8E0
TP5Y
D8B0
D8B1
JP8A0 JP8A1 JP8A2 JP8A3 JP8A4 JP8A5
TP2T
TP5X TP5T
D8A5 D8A6
11
SG1 / KS1
12
SG2 / KS2
13
SG3 / KS3
14
SG4 / KS4
SEGMENT
15
SG5 / KS5
DRIVER
16
SG6 / KS6
KEY SCAN
17
SG7
OUTPUT
18
SG8
19
SG9
20
SG10
27
GR1
26
GR2
COM 25
GR3
DRIVER
24
GR4
23
GR5