A
1
2
3
4
5
6
7
8
9
10
B
C
D
E
F
G
H
I
J
K
L
M
N
RX-V550/HTR-5750/RX-V450/HTR-5740/DSP-AX450
80
SCHEMATIC DIAGRAM (OPERATION)
RX-V550
★
All voltages are measured with a 10M
Ω
/V DC electronic 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.
★ 電圧は、内部抵抗10MΩの電圧計で測定したものです。
★
s
印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、パーツリス
トに記載されている部品を使用してください。
★ 本回路図は標準回路図です。改良のため予告なく変更することがございます。
52
Display
controller
Segment
digit
select/
output
circuit
Serial
receive
circuit
Digit
output
circuit
Clock
generator
DIG11/
SEG42
51 DIG12/
SEG41
50 DIG13/
SEG40
49 DIG14/
SEG39
48 DIG15/
SEG38
47 DIG16/
SEG37
46 DIG17/
SEG36
45
SEG35
XOUT 6
Vcc1 8
Vcc2 18
Vss 5
Vp 64
XIN 7
CS
SCK 3
SDATA 4
RESET 1
SEG00
44
9
SEG34
SEG26
17
19
SEG25
Segment
output
circuit
Display code
RAM
(8-bit x 60)
CGROM
(35 bit x 166)
CGROM
(35 bit x 16)
code
select
Code
write
Code/
command
control
circuit
DIG00
63
53
DIG10
IC801: M66003-0101FP
FL Display Driver
2
data
timing
clock
dot data
write
scan pulse
-22.0
-22.0
-20.1
-22.1
-26.1
-26.1
-26.1
-26.1
-26.1
-26.1
-26.1
-22.1
-20.5
-20.5
-26.0
-26.1
-26.1
-26.1
-26.1
-26.1
-26.1
-26.1
-26.1
-26.1
-26.1
-26.1
-26.1
-26.0
-26.0
-25.8
-22.1
-22.0
-22.0
-22.0
-20.1
-24.1
-24.1
-24.1
-20.1
-20.3
-20.2
-22.0
-22.1
-20.5
-20.5
-22.1
-22.1
-22.1
-24.0
-20.2
-16.0
-22.1
-18.1
-24.0
-18.1
-18.1
-18.2
-16.3
-16.3
-14.4
-16.2
-26.0
-26.0
~
~
-18.2
-18.2
-18.2
-20.1
-24.1
-22.1
-22.0
4.8
-20.1
-20.1
-20.2
-18.1
-18.1
-14.4
-24.0
-24.1
-16.2
-16.3
-16.3
~
-26.1
-26.1
-26.1
-26.1
-26.1
-26.0
-26.0
-24.0
~
4.8
4.8
4.8
4.8
4.8
4.8
~
~
-18.2
-20.3
4.8
4.8
~
~
-18.1
-16.0
-24.0
-22.5
0
0
0
0
0
0
0
0
0
0
0
4.7
0
0
-22.5
-20.8
4.8
2.1
2.1
4.8
~
0
-25.8
0
0
0
5.1
5.1
-26.0
4.8
-22.0
-24.1
-24.1
-24.1
-22.1
-22.1
-22.1
~
-26.0
-18.2
-18.2
-18.2
~
~
~
~
~
~
-26.0
FL DRIVER
FL DISPLAY
Page 76
to Power Transformer
to FUNCTION (1)
I2
Page 77
to FUNCTION (2)
J9
Page 76
to FUNCTION (1)
L3
x: NOT USED
O: USED / APPLICABLE