Yamaha RX-V540 Service Manual page 77

A B
SCHEMATIC DIAGRAM (OPERATION)
1
2
4.9 4.9
3
-25.9
-25.7 -25.7
4
5
6
HEADPHONE MUTE
0
0.8
0
0
0.8
7
0
8
9
C D E
FL DISPLAY
-23.9 -27.8
-24.0 -23.9
-16.2 -22.1
-25.8 -23.9
FL DRIVER
-25.8 -24.0
-23.9 -22.0
-20.1 -24.0
-18.2 -18.2
-16.3 4.9
-12.5 2.2
2.2
-18.2
0
-18.1
-25.9
-16.3 0
-10.5 4.9
-16.2 4.9
-25.9 4.0
IR REMOTE
4.9 0 4.8
HEADPHONE AMP
11.7
9.2
9.2
8
5
0 7
6 0
0
2
0 1
3
0
0
4
-9.5
-9.5
-10.2
RX-540/RX-V540RDS/HTR-5650/HTR-5650RDS/DSP-AX540: Page 80
RX-440/RX-V440RDS/HTR-5640/HTR-5640RDS/DSP-AX440: Page 82
F G
4.9 4.9
-18.2 -22.1
-18.2 -21.7
-22.0
4.9 4.9
-28.0
-23.9
-16.2
-23.6 -16.0
B8
B8
to FUNCTION (4)
# All voltages are measured with a 10MΩ/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.
H I
RX-V540/RX-V540RDS/HTR-5650/HTR-5650RDS/DSP-AX540
RX-V440/RX-V440RDS/HTR-5640/HTR-5640RDS/DSP-AX440
x: NOT USED
O: USED / APPLICABLE
0 0
0 0
0 0
0 0
11.6
4.2
3.6
3.6
4.2
11.6
IC501: M66003-0101FP
FL Display Driver
0
0
4.9
0
0
0
CS 2 Serial
receive
SCK 3
circuit
SDATA 4
XIN 7
Clock
generator
XOUT 6
RESET 1
Vcc1 8
Vcc2 18
Vss 5
Vp 64
IC551: NJM4556AL
Dual OP-Amp
V+
8
2, 6
–INPUT
+INPUT
3, 5
V–
4
J K L
Display code
RAM CGROM
44 SEG00
(8-bit x 60) (35 bit x 166)
Segment 19 SEG25
Code
write output
17 SEG26
circuit
CGROM
dot data 9 SEG34
data (35 bit x 16)
write
Code/
command
45 SEG35
control
circuit
DIG11/
52
SEG42
DIG12/
51
SEG41
code
Segment DIG13/
50
select SEG40
digit
select/ DIG14/
49
SEG39
Display output
timing
clock controller scan pulse circuit DIG15/
48
SEG38
DIG16/
47
SEG37
DIG17/
46
SEG36
63 DIG00
Digit
output
circuit
53 DIG10
OUTPUT
1, 7
83