A
B
C
D
E
F
G
H
1
2
3
4
5
6
I
J
K
L
M
N
7
8
9
10
83
RX-V750/DSP-AX750/DSP-AX750SE
RX-V650/HTR-5760
■
SCHEMATIC DIAGRAM (OPERATION)
* All voltages are measured with a 10M
Ω
/V DC electronic volt meter.
* Components having special characteristics are marked
Z
and
must be replaced with parts having specifications equal to
those originally installed.
* Schematic diagram is subject to change without notice.
DISPLAY DRIVER
OPTIMIZER MIC AMP
0.1
2.9
–
11.8
–10.4
–10.4
11.8
0
0
0
0
0
5.0
0
0
0
0
0
0
4.8
0
0
0
0
0
0
0
0
0
3.7
4.9
4.9
4.1
4.1
4.1
0
5.1
5.1
4.8
4.8
0
0
0
0
4.8
4.8
–
26.4
–
26.4
–26.4
–26.4
–26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
28.6
–
23.1
–
23.1
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
26.4
–
22.5
–
20.6
–
24.4
–
24.4
–
28.4
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
–
26.3
–
23.1
–
21.7
–
25.1
–
25.1
–
28.6
4.8
4.8
~
~
~
~
4.8
4.8
–
23.1
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
4.8
4.8
4.9
4.9
4.9
4.9
2.2
0.1
0
–
28.4
–26.3
~
~
~
~
~
~
~
~
~
~
~
–26.3
–24.4
–20.6
–22.5
TO POWER TRANSFORMER
TO FUNCTION (2) CB505
Page 81 I-10
TO FUNCTION (1) CB309
Page 80 I-4
TO DSP CB7
Page 79 K-1
TO FUNCTION (1) CB306
Page 80 G-1
TO DSP CB3
Page 79 F-1
X: NOT USED
O: USED / APPLICABLE
IC901 :
µ
PC4570G2
Dual OP-Amp
–
+
OUT1
–IN1
–VCC
+VCC
OUT2
1
2
3
4
5
+IN1
–IN2
+IN2
–
+
6
7
8
IC801 : M66003-0101FP
FL Display Driver
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
2
data
timing
clock
dot data
write
scan pulse
RX-V750/DSP-AX750/DSP-AX750SE/RX-V650
* 電圧は、内部抵抗10MΩの電圧計で測定したものです。
*
Z
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。