A
B
C
D
E
F
G
H
I
J
K
L
RX-V540/RX-V540RDS/HTR-5650/HTR-5650RDS/DSP-AX540
RX-V440/RX-V440RDS/HTR-5640/HTR-5640RDS/DSP-AX440
83
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.
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
IC501: M66003-0101FP
FL Display Driver
2
data
timing
clock
dot data
write
scan pulse
IC551: NJM4556AL
Dual OP-Amp
8
2, 6
3, 5
1, 7
4
V+
–INPUT
+INPUT
V–
OUTPUT
FL DRIVER
FL DISPLAY
IR REMOTE
HEADPHONE AMP
HEADPHONE MUTE
RX-440/RX-V440RDS/HTR-5640/HTR-5640RDS/DSP-AX440:
P
age 81
to FUNCTION (1)
I2
RX-540/RX-V540RDS/HTR-5650/HTR-5650RDS/DSP-AX540:
P
age 79
I2
x: NOT USED
O: USED / APPLICABLE
RX-440/RX-V440RDS/HTR-5640/HTR-5640RDS/DSP-AX440: Page 82
to FUNCTION (4)
B8
RX-540/RX-V540RDS/HTR-5650/HTR-5650RDS/DSP-AX540: Page 80
B8
RX-440/RX-V440RDS/HTR-5640/HTR-5640RDS/DSP-AX440:
P
age 81
to FUNCTION (1)
J2
RX-540/RX-V540RDS/HTR-5650/HTR-5650RDS/DSP-AX540:
P
age 79
J2
7
1
8
4
5
6
2
3
to P
o
w
er
T
ransf
or
mer
-27.8
-23.9
-24.0
-25.8
-25.8
-23.9
-20.1
-18.2
-16.3
-12.5
-18.2
-18.1
-16.3
-10.5
-16.2
-25.9
-25.9
4.9
-25.7
-25.9
4.9
-25.7
-16.2
-23.9
-22.1
-23.9
-24.0
-22.0
-24.0
-18.2
4.9
2.2
0
4.9
2.2
0
4.9
4.0
-24.0
-23.7
-16.1
-23.6
-21.9
-22.0
-22.0
-14.3
-22.0
-22.0
-20.0
-20.1
-20.2
-23.9
4.9
-21.9
-28.0
-26.0
-25.9
-25.9
-25.9
-25.9
-25.9
-25.9
-25.9
-25.9
-25.9
-25.9
-25.9
-25.9
-25.9
-25.9
-25.9
-25.7
-25.7
-25.9
-25.9
-25.9
-25.9
-25.9
-25.9
-25.9
-25.9
-25.9
-25.9
-25.9
-25.9
-26.0
-24.0
-23.9
-24.0
-23.7
-16.1
-23.8
-16.0
-25.8
-25.8
-23.9
-20.1
-18.2
-16.3
-12.5
-18.2
-18.1
-16.3
-10.5
-16.2
-27.8
-21.9
-23.9
-20.2
-20.1
-20.0
-24.0
-22.0
-20.3
-20.3
-24.0
-23.9
-21.7
-18.2
-23.9
-22.0
-22.0
-14.3
-22.0
-22.0
-21.9
-20.3
-20.3
-22.0
-28.0
4.9
-18.2
-18.2
4.9
-21.7
-22.1
4.9
-23.6
-23.9
4.9
-16.0
-16.2
0
0
0
0
0
0
0
0
3.6
3.6
4.2
4.2
11.6
11.6
0
0
0
0
0
4.9
0
4.9
4.8
0
0.8
0.8
9.2
-9.5
9.2
-9.5
0
0
0
0
0
0
11.7
-10.2
0
0
0