Mitsubishi Electric HS-U449 Service Manual page 73

S812 S811 S810
R801
C801
C802
C803
C804
STBY5V
V8A0
SW5V
L8A0
C8A0
IC8A0
R8A5
R8A4
DATAI
DATAO
SUBCLK
FLDCS
S8A7 S8A6 S8A5 S8A4
R8E1 R8E2 R8E3 R8E4 R8E5 R8E6 R8E7 R8E8 R8E9
R8A1 R8A0 R8A2
R8A3
S8A3 S8A2 S8A1 S8A0
D8A4 D8A5 D8A6
R8E0
IC8A0 PT6958
TP5Y
D8B0
3
DIN CONTROL
2
D8B1 SERIAL
DOUT
4 DATA
CLK
INTERFACE
DISPLAY
5
STB MEMORY
1
TIMING
OSC OSC
GENERATOR
JPPOM
KEY MATRIX
MEMORY
DIMMING
CIRCUIT
6 7 8 9 10,21 22,28
K1 K2 K3 K4 VDD
TP5X TP5T
11
SG1 / KS1
12
SG2 / KS2
13
SG3 / KS3
14
SG4 / KS4
SEGMENT
15
DRIVER SG5 / KS5
16
SG6 / KS6
KEY SCAN
17
OUTPUT
SG7
18
SG8
19
SG9
20
SG10
27
GR1
26
GR2
25
COM
GR3
DRIVER
24
GR4
23
GR5
GND
CONTENTS
PCB-INTERCONNECT ···················· C-1
(POWER) PCB-MAIN ························ C-2
(HIFI) PCB-MAIN ······························ C-3
(TIMER/OPEKEY) PCB-MAIN ·········· C-4
PCB-OPE ·········································· C-4
(Y/C/A) PCB-MAIN ···························· C-5
(CONT) PCB-MAIN ··························· C-6
C-4
HS-U449