A
B
C
D
E
F
G
H
I
J
K
L
RX-V530/RX-V530RDS/HTR-5550/HTR-5550RDS/DSP-AX530
RX-V430/RX-V430RDS/HTR-5540/HTR-5540RDS/DSP-AX430
69
SCHEMATIC DIAGRAM (OPERATION)
1
2
3
4
5
6
7
8
9
★
All voltages are measured with a 10M
Ω
/V DC electric volt meter.
★
Components having special characteristics are marked
s
and must be replaced
with parts having specifications equal to those originally installed.
★
Schematic diagram is subject to change without notice.
IR REMOTE
FL DISPLAY
x: NOT USED
O: USED / APPLICABLE
IC701: LC75712E FLD
FL Display Driver
DI
SHIFT REGISTER
CG
ROM
DC
RAM
C
O
N
T
R
O
L
L
A
T
C
H
64
CL
63
CE
L
A
T
C
H
A
N
O
D
E
D
R
I
V
E
R
62
TEST
56
VFL
55
VDD
60
VSS
57
RES
61
OSCI
59
OSCO
58
CG
RAM
AD
RAM
ADDRESS
COUNTER
ADDRESS
REGISTER
GRID
CONTROL
GRID
REGISTER
AM1
AM2
AM35
D
E
C
O
D
E
R
G
R
I
D
D
R
I
V
E
R
G1
G2
G10
G11
AA1
AA2
AA3
AA4/G16
AA5/G15
AA6/G14
AA7/G13
AA8/G12
BLINK
GENERATOR
DUTY
GENERATOR
BLINKCYCLE
REGISTER
DISPLAY
CONTROL
DISPLAY
REGISTER
DUTYCYCLE
REGISTER
CONTROL
INSTRUCTION
DECODER
DIVIDER
TIMING
GENERATOR
OSC
1
2
35
36
37
38
39
40
41
42
43
44
45
53
54
IC741, 742:
µ
PC4570G2
Dual OP-Amp
–
+
OUT
1
–IN
1
–V
CC
+V
CC
OUT
2
1
2
3
4
5
+IN
1
–IN
2
+IN
2
–
+
6
7
8
P
age 67
to FUNCTION (1)
F1
Page 67
to FUNCTION (1)
I5
Page 67
to FUNCTION (1)
I5
5
6
2
3
6
5
2
3
L
0
0
0
0
0
0
0
0
0
0
0
0
11.9
-12.0
-12.0
11.9
4.9
4.9
0
4.9
4.9
0.1
4.9
0
4.9
4.9
-28.1
2.5
2.5
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
-27.4
~
-27.4
~
~
~
~
~
~
~
~
~
~
~
~
0
0
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
-20.4
-20.4
-20.4
-20.4
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
-27.4
~
-29.4
~
~
~
~
~
-27.8
~
~
~
~
~
~
~
~
~
~
~
~
~
0
AC
5.8
-20.4
-28.1
4.9
~
~
4.9
~
~
4.9
~
~
4.9
~
~
4.9
~
~
4.9
~
~
4.9
~
~
4.9
~
~
4.9
~
~