Yamaha RX-V459 Service Manual page 73

A B C
OPERATION
1
2
to POWER CABLE
RX-V459/DSP-AX459 models
RX-V459/DSP-AX459 models
220K
3
4
Page 74
to MAIN (1)_W1029
5
6
FL DRIVER
7
8
RX-V459/HTR-5940/
DSP-AX459 models
Page 69
9 to DSP_CB5
OPERATION (6)
10
D E F
U, C, T, K, A, G, J models
to POWER TRANSFORMER
Page 72 J9
R, L models
to FUNCTION (3)_W3005A,W3005B
D3015 VU99500 VU99500 VU99470
s13 MA8091-M9.1V MA8091-M9.1V MA8082-H8.5V
OPERATION (4)
H7
OPERATION (1)
OPERATION (3)
100K
HTR-5935 models
B5 Page 72 E7
to FUNCTION (1)_CB205
G H
VU99500 VU99500 VU99500 VU99500 VU99500
MA8091-M9.1V MA8091-M9.1V MA8091-M9.1V MA8091-M9.1V MA8091-M9.1V
OPERATION (5)
HTR-5935 model
I J K
Page 74 J8 Page 72 H3 Page 72
to MAIN (2)_W1006 to FUNCTION (2)_CB290 to FUNCTION (1)_CB201
no_use (HTR-5935 model)
RX-V459/HTR-5940/DSP-AX459 models
OPERATION (2)
# All voltages are measured with a 10MΩ/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.
L M N
RX-V459/HTR-5940/HTR-5935/DSP-AX459
IC251 : LA73050-TLM-E
Analog amplifier
N.C. 1 36 N.C.
N.C. 2 35 N.C.
VIN1 3 34 +VCC1
+Vcc
DCCNT1 4 6dB DR 33 VOUT1
C9
GND 5 32 GND
VIN2 6 31 VOUT2
6dB DR
MUTE1 7 30 N.C.
VIN3 8 29 VOUT3
6dB DR
N.C. 9 28 -VCC1
N.C. 10 27 -VCC2
N.C. 11 26 N.C.
VIN4 12 25 +VCC2
+Vcc
DCCNT2 13 24 VOUT4
6dB DR
GND 14 23 GND
15
VIN5 22 VOUT5
6dB DR
MUTE2 16 21 N.C.
VIN6 17 20 VOUT6
6dB DR
-VCC4 18 19 -VCC3
IC253~255 : TC74HC4051AF
Analog multiplexers/demultiplexers
16 V
4 1 CC
6 2 15 2
COM 3 14 1
7 4 13 0
5 5 12 3
INH 6 11 A
V 7 10 B
EE
9 C
GND 8
IC301 : M66003-0131FP
FL display driver
Display code
RAM CGROM
(35 bit x 166) 44 SEG00
(8-bit x 60)
Segment 19 SEG25
Code
write output
17 SEG26
circuit
CGROM SEG34
CS 2 Serial dot data 9
data (35 bit x 16)
receive write
SCK 3
Code/
SDATA 4 circuit
command
SEG35
control 45
circuit
DIG11/
52
SEG42
DIG12/
51
SEG41
code
Segment DIG13/
select 50
digit SEG40
DIG14/
select/
XIN 7 49
Clock Display output SEG39
timing
generator circuit DIG15/
clock controller scan pulse 48
XOUT 6
SEG38
DIG16/
47
SEG37
DIG17/
46
SEG36
63 DIG00
Digit
RESET 1 output
circuit
Vcc1 8 53 DIG10
Vcc2 18
Vss 5
Vp 64
IC302 : TC4013BP
Dual D-type flip flop
4
RESET1
SET1 6
1 Q1
DATA1 5
2 Q1
CL CL
CL
CL
3
CLOCK1 CL
CL
RESET2 10
8
SET2 13 Q2
DATA2 9
12
Q2
CL
CL
CL
CL
CLOCK2 11 CL
CL
7
VSS
VDD 14
73