Schematic Diagram (Video) - Yamaha RX-V550 Service Manual

A B C

SCHEMATIC DIAGRAM (VIDEO)

DSP-AX450
1
2
3
4
5
4.4 4.4
0 0
4.4 4.4
6
0 0
4.4 4.4
0 0
7
8
9
10
# All voltages are measured with a 10MΩ/V DC electronic volt meter.
# Components having special characteristics are marked s and must be replaced
s
with parts having specifications equal to those originally installed.
# Schematic diagram is subject to change without notice.
D E F
Page 79 I4
to FUNCTION (2)
0.1
0.7
0
0
-4.8 0
0 0 0 4.9
-4.8 0
0
0 4.9
0
-4.8
0 4.9
0 0
0
0 0
0
4.9
0.1
4.9
0 4.9
0 4.9
4.9
4.9
4.4 0.1
4.9
0.1 4.9
0
4.9
0 0
0
0 0
0
0 0
0
G H I
IC851, 852: TC74HC4053AF
Analog Multiplexer/Demultiplexer
INHIBIT VDD
6 16
A 11
LEVEL BINARY TO 1-OF-8
B 10
CONVERTER DECODER WITH INHIBIT
C 9
VSS 8
VEE
7
0X SW
12
1X
13 SW
0Y 2 SW
1Y 1 SW
0Z 5
1Z
3
IC853: NJM2581M
Video Amp
75Ω
6dB
VIN1 1 14 V+1
AMP Driver
BIAS
NEE1 2 VOUT1
13
6dB 75Ω
VIN2 3 12 V+2
AMP Driver
BIAS
VEE2 4 11 VOUT2
6dB 75Ω
VIN3 5 10 V+3
Driver
AMP
BIAS
6
VEE3 9 VOUT3
PowerSave 7 REF 8 GND
J K L
INPUT STATES
"ON" CHANNNEL (S)
INHIBIT C B A
0 0 0 0 0X, 0Y, 0Z
0 0 0 1 1X, 0Y, 0Z
0 0 1 0 0X, 1Y, 0Z
0 0 1 1 1X, 1Y, 0Z
X-COM 0 1 0 0 0X, 0Y, 1Z
14
0 1 0 1 1X, 0Y, 1Z
0 1 1 0 0X, 1Y, 1Z
15 Y-COM
0 1 1 1 1X, 1Y, 1Z
1 X X X NONE
SW
4 Z-COM
SW
M N
RX-V550/HTR-5750/RX-V450/HTR-5740/DSP-AX450
85